Company lists · Data refreshed November 2026
Top 25 Quality engineering firms based in the United States
RevenueBase identified 3,654 company matches for quality engineering firms associated with the United States as of November 2026 and tracks 125,656 professional contacts across them, including 54,537 with verified work emails. New York is the largest hub.
This list covers company matches for quality engineering firms associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest quality engineering firms based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 6,576 contacts → | ||||
Exact match “Terracon is a 100 percent employee-owned consulting engineering firm providing quality services to clients.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 2 | 2,363 contacts → | ||||
Exact match “ECS Group of Companies is a Chantilly, VA-based consulting engineering firm.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 3 | 2,116 contacts → | ||||
Exact match “Leaders in Engineering and Innovation.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 4 | 1,827 contacts → | ||||
Exact match “Headquartered in Reston, Virginia, Bowman is a national engineering services firm delivering infrastructure solutions to customers who own, develop and maintain the built…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 5 | 1,749 contacts → | ||||
Exact match “Cigniti Technologies Limited is the world’s leading AI & IP-led Digital Assurance and Digital Engineering services company that helps global companies across industries…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 6 | 1,694 contacts → | ||||
Exact match “UES provides professional engineering, environmental, testing and inspection services to clients across the United States.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 7 | 1,631 contacts → | ||||
Exact match “KPFF is a multi-office, multi-discipline engineering firm.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 8 | 1,575 contacts → | ||||
Exact match “Atlas Technical Consultants (Atlas) provides professional testing, inspection, engineering, environmental and consulting services nationwide.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 9 | 1,463 contacts → | ||||
Exact match “Applause is the global leader in managed software testing services and digital quality.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 10 | 1,446 contacts → | ||||
Exact match “Welcome to Walter P Moore!” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 11 | 1,125 contacts → | ||||
Exact match “At RGBSI, we deliver engineering and quality solutions that close the gap between strategy and execution for global organizations of all sizes.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 12 | 969 contacts → | ||||
Exact match “Simpson Gumpertz & Heger (SGH) is a national engineering firm committed to delivering holistic advice for our clients’ most complex challenges.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 13 | 919 contacts → | ||||
Exact match “The right team is more than an advantage.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 14 | 885 contacts → | ||||
Exact match “QASource is a leading provider of outsourced software quality engineering services, offering scalable and customizable QA solutions to clients worldwide.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 15 | 840 contacts → | ||||
Exact match “Tam Consulting Services LLC (TCS) provides engineering and quality services which includes construction engineering and inspection (CE & I), materials testing, program management…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 16 | 803 contacts → | ||||
Exact match “QualiZeal is the world’s fastest-growing independent, AI-native Digital Quality Engineering services provider, redefining how organizations achieve quality at scale through our…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 17 | 795 contacts → | ||||
Exact match “Intertek, a leading provider of quality solutions to industries around the world, has completed the acquisition of Professional Service Industries, Inc.(PSI), a leading…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 18 | 784 contacts → | ||||
Exact match “HBK Engineering, LLC a Quanta Services Company is a fully licensed, professional engineering design firm headquartered in downtown Chicago providing civil, environmental…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 19 | 722 contacts → | ||||
Exact match “BJIT is a global leader in offshore software development and IT outsourcing services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 20 | 690 contacts → | ||||
Exact match “Established in 1915, WRA is a nationally-recognized engineering, architectural and environmental planning firm with a reputation for delivering exceptional work on time and within…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 21 | 687 contacts → | ||||
Exact match “Farnsworth Group is a leading employee-owned full-service design firm, with 650-plus professionals across the United States.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 22 | 612 contacts → | ||||
Exact match “Founded in 1968, Raba Kistner Inc.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 23 | 584 contacts → | ||||
Exact match “For more than 60 years, it has been the quality of our people that defines the DOWL difference.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 24 | 574 contacts → | ||||
Exact match “BL Companies is committed to providing quality, individualized service to clients.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 25 | 546 contacts → | ||||
Exact match “We Build People Who Build the Future KSA is an industry leader, providing a broad range of engineering, architecture, planning, surveying, and construction management services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “quality engineering firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 3,654 quality engineering firms based in the United States
See the full list, filter by size, metro and specialty, and access 54,537 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Quality engineering firms based in the United States at a glance
As of Nov 6, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 3,654 companies.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with the United States whose business descriptions match “quality engineering firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 54,537 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on November 6, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Quality engineering firms by metro
- Quality engineering firms in New York109
- Quality engineering firms in Houston65
- Quality engineering firms in Austin43
- Quality engineering firms in Dallas41
- Quality engineering firms in Miami38
- Quality engineering firms in Tampa38
- Quality engineering firms in San Francisco34
- Quality engineering firms in Chicago32
- Quality engineering firms in San Antonio30
- Quality engineering firms in Los Angeles28
- Quality engineering firms in Charlotte26
- Quality engineering firms in Orlando26
- Quality engineering firms in Atlanta25
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “quality engineering firms”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many quality engineering firms are there based in the United States?
RevenueBase identified 3,654 company matches for quality engineering firms associated with the United States as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
Terracon tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most quality engineering firms?
New York leads with 109 company records, followed by Houston (65) and Austin (43).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 54,537 professional contacts with verified work emails tracked across these 3,654 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 2026.
Ready to reach these companies? Verified emails and direct dials for all 3,654 quality engineering firms based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Quality engineering firms by geography
- Quality engineering firms based in Melbourne, Australia
- Quality engineering firms based in Sydney, Australia
- Quality engineering firms based in Curitiba, Brazil
- Quality engineering firms based in Rio De Janeiro, Brazil
- Quality engineering firms based in Sao Paulo, Brazil
- Quality engineering firms based in Calgary, Canada
- Quality engineering firms based in Montreal, Canada
- Quality engineering firms based in Toronto, Canada
- Quality engineering firms based in Santiago, Chile
- Quality engineering firms based in Bogota, Colombia
- Quality engineering firms based in Cairo, Egypt
- Quality engineering firms based in Paris, France
About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Quality engineering firms based in Melbourne, Australia
- Quality engineering firms based in Sydney, Australia
- Quality engineering firms based in Curitiba, Brazil
- Quality engineering firms based in Rio De Janeiro, Brazil
- Quality engineering firms based in Sao Paulo, Brazil
- Quality engineering firms based in Calgary, Canada
Company intelligence · public preview
Top 25 quality engineering firms based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 3,654 matching company records for quality engineering firms based in the United States, with 125,656 tracked contacts and 54,537 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 quality engineering firms based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Terraconterracon.comHQ: Olathe, NE, United StatesReported employees: 5,001-10,000 | Olathe, NE, United States | 5,001-10,000 | Exact match | 6,576 contacts → |
“Terracon is a 100 percent employee-owned consulting engineering firm providing quality services to clients.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  ECS Group Of Companiesecslimited.comHQ: Chantilly, VA, United StatesReported employees: 1,001-5,000 | Chantilly, VA, United States | 1,001-5,000 | Exact match | 2,363 contacts → |
“ECS Group of Companies is a Chantilly, VA-based consulting engineering firm.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  IMEGimegcorp.comHQ: Rock Island, IL, United StatesReported employees: 1,001-5,000 | Rock Island, IL, United States | 1,001-5,000 | Exact match | 2,116 contacts → |
“Leaders in Engineering and Innovation.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Bowman Consultingbowman.comHQ: Reston, VA, United StatesReported employees: 1,001-5,000 | Reston, VA, United States | 1,001-5,000 | Exact match | 1,827 contacts → |
“Headquartered in Reston, Virginia, Bowman is a national engineering services firm delivering infrastructure solutions to customers who own, develop and maintain the built…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Cigniti Technologiescigniti.com HQ: Irving, TX, United StatesReported employees: 1,001-5,000 | Irving, TX, United States | 1,001-5,000 | Exact match | 1,749 contacts → |
“Cigniti Technologies Limited is the world’s leading AI & IP-led Digital Assurance and Digital Engineering services company that helps global companies across industries…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  UESteamues.comHQ: Orlando, FL, United StatesReported employees: 1,001-5,000 | Orlando, FL, United States | 1,001-5,000 | Exact match | 1,694 contacts → |
“UES provides professional engineering, environmental, testing and inspection services to clients across the United States.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Kpff Consulting Engineerskpff.comHQ: Seattle, ID, United StatesReported employees: 1,001-5,000 | Seattle, ID, United States | 1,001-5,000 | Exact match | 1,631 contacts → |
“KPFF is a multi-office, multi-discipline engineering firm.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  ATLASoneatlas.comHQ: Denver, CO, United StatesReported employees: 1,001-5,000 | Denver, CO, United States | 1,001-5,000 | Exact match | 1,575 contacts → |
“Atlas Technical Consultants (Atlas) provides professional testing, inspection, engineering, environmental and consulting services nationwide.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Applauseapplause.comHQ: Framingham, MA, United StatesReported employees: 201-500 | Framingham, MA, United States | 201-500 | Exact match | 1,463 contacts → |
“Applause is the global leader in managed software testing services and digital quality.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Walter P Moorewalterpmoore.comHQ: Houston, TX, United StatesReported employees: 1,001-5,000 | Houston, TX, United States | 1,001-5,000 | Exact match | 1,446 contacts → |
“Welcome to Walter P Moore!” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  RGBSIrgbsi.comHQ: Troy, MI, United StatesReported employees: 1,001-5,000 | Troy, MI, United States | 1,001-5,000 | Exact match | 1,125 contacts → |
“At RGBSI, we deliver engineering and quality solutions that close the gap between strategy and execution for global organizations of all sizes.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Simpson Gumpertz & Heger SGHsgh.comHQ: Waltham, CA, United StatesReported employees: 501-1,000 | Waltham, CA, United States | 501-1,000 | Exact match | 969 contacts → |
“Simpson Gumpertz & Heger (SGH) is a national engineering firm committed to delivering holistic advice for our clients’ most complex challenges.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Coffman Engineerscoffman.comHQ: Seattle, CO, United StatesReported employees: 501-1,000 | Seattle, CO, United States | 501-1,000 | Exact match | 919 contacts → |
“The right team is more than an advantage.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Qasourceqasource.comHQ: Pleasanton, CA, United StatesReported employees: 1,001-5,000 | Pleasanton, CA, United States | 1,001-5,000 | Exact match | 885 contacts → |
“QASource is a leading provider of outsourced software quality engineering services, offering scalable and customizable QA solutions to clients worldwide.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  TCStcsengineering.comHQ: Plano, TX, United StatesReported employees: Not recorded | Plano, TX, United States | Not recorded | Exact match | 840 contacts → |
“Tam Consulting Services LLC (TCS) provides engineering and quality services which includes construction engineering and inspection (CE & I), materials testing, program management…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Qualizealqualizeal.comHQ: Irving, TX, United StatesReported employees: 1,001-5,000 | Irving, TX, United States | 1,001-5,000 | Exact match | 803 contacts → |
“QualiZeal is the world’s fastest-growing independent, AI-native Digital Quality Engineering services provider, redefining how organizations achieve quality at scale through our…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Professional Service Industries, Inc. PSIintertek.comHQ: Arlington Heights, NY, United StatesReported employees: 1,001-5,000 | Arlington Heights, NY, United States | 1,001-5,000 | Exact match | 795 contacts → |
“Intertek, a leading provider of quality solutions to industries around the world, has completed the acquisition of Professional Service Industries, Inc.(PSI), a leading…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  HBK Engineering, LLChbkengineering.comHQ: Chicago, TX, United StatesReported employees: 501-1,000 | Chicago, TX, United States | 501-1,000 | Exact match | 784 contacts → |
“HBK Engineering, LLC a Quanta Services Company is a fully licensed, professional engineering design firm headquartered in downtown Chicago providing civil, environmental…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  BJITbjitgroup.comHQ: Dhaka, CA, United StatesReported employees: 501-1,000 | Dhaka, CA, United States | 501-1,000 | Exact match | 722 contacts → |
“BJIT is a global leader in offshore software development and IT outsourcing services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Whitman, Requardt And Associates, LLPwrallp.comHQ: Baltimore, FL, United StatesReported employees: 501-1,000 | Baltimore, FL, United States | 501-1,000 | Exact match | 690 contacts → |
“Established in 1915, WRA is a nationally-recognized engineering, architectural and environmental planning firm with a reputation for delivering exceptional work on time and within…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Farnsworth Group, INCf-w.comHQ: Normal, IL, United StatesReported employees: 501-1,000 | Normal, IL, United States | 501-1,000 | Exact match | 687 contacts → |
“Farnsworth Group is a leading employee-owned full-service design firm, with 650-plus professionals across the United States.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Raba Kistner, INCrkci.comHQ: San Antonio, UT, United StatesReported employees: 501-1,000 | San Antonio, UT, United States | 501-1,000 | Exact match | 612 contacts → |
“Founded in 1968, Raba Kistner Inc.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  DOWLdowl.comHQ: Bellevue, WY, United StatesReported employees: 501-1,000 | Bellevue, WY, United States | 501-1,000 | Exact match | 584 contacts → |
“For more than 60 years, it has been the quality of our people that defines the DOWL difference.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  BL Companiesblcompanies.comHQ: Meriden, CT, United StatesReported employees: 201-500 | Meriden, CT, United States | 201-500 | Exact match | 574 contacts → |
“BL Companies is committed to providing quality, individualized service to clients.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  KSAksaeng.comHQ: Longview, TX, United StatesReported employees: 51-200 | Longview, TX, United States | 51-200 | Exact match | 546 contacts → |
“We Build People Who Build the Future KSA is an industry leader, providing a broad range of engineering, architecture, planning, surveying, and construction management services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 3,654 company matches
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Quality engineering firms: dataset insights
November 6, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
3,649 records in the displayed employee bands.
5 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 3,654 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 6, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Quality engineering firms by metro
- Quality engineering firms in New York109
- Quality engineering firms in Houston65
- Quality engineering firms in Austin43
- Quality engineering firms in Dallas41
- Quality engineering firms in Miami38
- Quality engineering firms in Tampa38
- Quality engineering firms in San Francisco34
- Quality engineering firms in Chicago32
- Quality engineering firms in San Antonio30
- Quality engineering firms in Los Angeles28
- Quality engineering firms in Charlotte26
- Quality engineering firms in Orlando26
- Quality engineering firms in Atlanta25
Questions about this company list
What does Exact match mean for quality engineering firms?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many quality engineering firms did RevenueBase find based in the United States?
The saved snapshot records 3,654 matching company records, 125,656 tracked contacts and 54,537 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 6, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Quality engineering firms by geography
- Quality engineering firms based in Melbourne, Australia
- Quality engineering firms based in Sydney, Australia
- Quality engineering firms based in Curitiba, Brazil
- Quality engineering firms based in Rio De Janeiro, Brazil
- Quality engineering firms based in Sao Paulo, Brazil
- Quality engineering firms based in Calgary, Canada
- Quality engineering firms based in Montreal, Canada
- Quality engineering firms based in Toronto, Canada
- Quality engineering firms based in Santiago, Chile
- Quality engineering firms based in Bogota, Colombia
- Quality engineering firms based in Cairo, Egypt
- Quality engineering firms based in Paris, France
Cite this list
RevenueBase Data Team. Top 25 quality engineering firms based in the United States. Snapshot: November 6, 2026. https://revenuebase.ai/companies/quality-engineering-firms/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Quality engineering firms based in Melbourne, Australia
- Quality engineering firms based in Sydney, Australia
- Quality engineering firms based in Curitiba, Brazil
- Quality engineering firms based in Rio De Janeiro, Brazil
- Quality engineering firms based in Sao Paulo, Brazil
- Quality engineering firms based in Calgary, Canada
Company intelligence · public preview
Top 25 quality engineering firms based in the United States
RevenueBase records 3,654 matching company records for quality engineering firms based in the United States, with 125,656 tracked contacts and 54,537 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 quality engineering firms based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Terraconterracon.com HQ: Olathe, NE, United StatesReported employees: 5,001-10,000 | Olathe, NE, United States | 5,001-10,000 | Exact match | 6,576 contacts → |
“Terracon is a 100 percent employee-owned consulting engineering firm providing quality services to clients.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | ECS Group Of Companiesecslimited.com HQ: Chantilly, VA, United StatesReported employees: 1,001-5,000 | Chantilly, VA, United States | 1,001-5,000 | Exact match | 2,363 contacts → |
“ECS Group of Companies is a Chantilly, VA-based consulting engineering firm.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | IMEGimegcorp.com HQ: Rock Island, IL, United StatesReported employees: 1,001-5,000 | Rock Island, IL, United States | 1,001-5,000 | Exact match | 2,116 contacts → |
“Leaders in Engineering and Innovation.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Bowman Consultingbowman.com HQ: Reston, VA, United StatesReported employees: 1,001-5,000 | Reston, VA, United States | 1,001-5,000 | Exact match | 1,827 contacts → |
“Headquartered in Reston, Virginia, Bowman is a national engineering services firm delivering infrastructure solutions to customers who own, develop and maintain the built…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Cigniti Technologiescigniti.com HQ: Irving, TX, United StatesReported employees: 1,001-5,000 | Irving, TX, United States | 1,001-5,000 | Exact match | 1,749 contacts → |
“Cigniti Technologies Limited is the world’s leading AI & IP-led Digital Assurance and Digital Engineering services company that helps global companies across industries…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | UESteamues.com HQ: Orlando, FL, United StatesReported employees: 1,001-5,000 | Orlando, FL, United States | 1,001-5,000 | Exact match | 1,694 contacts → |
“UES provides professional engineering, environmental, testing and inspection services to clients across the United States.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Kpff Consulting Engineerskpff.com HQ: Seattle, ID, United StatesReported employees: 1,001-5,000 | Seattle, ID, United States | 1,001-5,000 | Exact match | 1,631 contacts → |
“KPFF is a multi-office, multi-discipline engineering firm.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | ATLASoneatlas.com HQ: Denver, CO, United StatesReported employees: 1,001-5,000 | Denver, CO, United States | 1,001-5,000 | Exact match | 1,575 contacts → |
“Atlas Technical Consultants (Atlas) provides professional testing, inspection, engineering, environmental and consulting services nationwide.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Applauseapplause.com HQ: Framingham, MA, United StatesReported employees: 201-500 | Framingham, MA, United States | 201-500 | Exact match | 1,463 contacts → |
“Applause is the global leader in managed software testing services and digital quality.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Walter P Moorewalterpmoore.com HQ: Houston, TX, United StatesReported employees: 1,001-5,000 | Houston, TX, United States | 1,001-5,000 | Exact match | 1,446 contacts → |
“Welcome to Walter P Moore!” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | RGBSIrgbsi.com HQ: Troy, MI, United StatesReported employees: 1,001-5,000 | Troy, MI, United States | 1,001-5,000 | Exact match | 1,125 contacts → |
“At RGBSI, we deliver engineering and quality solutions that close the gap between strategy and execution for global organizations of all sizes.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Simpson Gumpertz & Heger SGHsgh.com HQ: Waltham, CA, United StatesReported employees: 501-1,000 | Waltham, CA, United States | 501-1,000 | Exact match | 969 contacts → |
“Simpson Gumpertz & Heger (SGH) is a national engineering firm committed to delivering holistic advice for our clients’ most complex challenges.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Coffman Engineerscoffman.com HQ: Seattle, CO, United StatesReported employees: 501-1,000 | Seattle, CO, United States | 501-1,000 | Exact match | 919 contacts → |
“The right team is more than an advantage.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Qasourceqasource.com HQ: Pleasanton, CA, United StatesReported employees: 1,001-5,000 | Pleasanton, CA, United States | 1,001-5,000 | Exact match | 885 contacts → |
“QASource is a leading provider of outsourced software quality engineering services, offering scalable and customizable QA solutions to clients worldwide.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | TCStcsengineering.com HQ: Plano, TX, United StatesReported employees: Not recorded | Plano, TX, United States | Not recorded | Exact match | 840 contacts → |
“Tam Consulting Services LLC (TCS) provides engineering and quality services which includes construction engineering and inspection (CE & I), materials testing, program management…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Qualizealqualizeal.com HQ: Irving, TX, United StatesReported employees: 1,001-5,000 | Irving, TX, United States | 1,001-5,000 | Exact match | 803 contacts → |
“QualiZeal is the world’s fastest-growing independent, AI-native Digital Quality Engineering services provider, redefining how organizations achieve quality at scale through our…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Professional Service Industries, Inc. PSIintertek.com HQ: Arlington Heights, NY, United StatesReported employees: 1,001-5,000 | Arlington Heights, NY, United States | 1,001-5,000 | Exact match | 795 contacts → |
“Intertek, a leading provider of quality solutions to industries around the world, has completed the acquisition of Professional Service Industries, Inc.(PSI), a leading…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | HBK Engineering, LLChbkengineering.com HQ: Chicago, TX, United StatesReported employees: 501-1,000 | Chicago, TX, United States | 501-1,000 | Exact match | 784 contacts → |
“HBK Engineering, LLC a Quanta Services Company is a fully licensed, professional engineering design firm headquartered in downtown Chicago providing civil, environmental…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | BJITbjitgroup.com HQ: Dhaka, CA, United StatesReported employees: 501-1,000 | Dhaka, CA, United States | 501-1,000 | Exact match | 722 contacts → |
“BJIT is a global leader in offshore software development and IT outsourcing services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Whitman, Requardt And Associates, LLPwrallp.com HQ: Baltimore, FL, United StatesReported employees: 501-1,000 | Baltimore, FL, United States | 501-1,000 | Exact match | 690 contacts → |
“Established in 1915, WRA is a nationally-recognized engineering, architectural and environmental planning firm with a reputation for delivering exceptional work on time and within…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Farnsworth Group, INCf-w.com HQ: Normal, IL, United StatesReported employees: 501-1,000 | Normal, IL, United States | 501-1,000 | Exact match | 687 contacts → |
“Farnsworth Group is a leading employee-owned full-service design firm, with 650-plus professionals across the United States.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Raba Kistner, INCrkci.com HQ: San Antonio, UT, United StatesReported employees: 501-1,000 | San Antonio, UT, United States | 501-1,000 | Exact match | 612 contacts → |
“Founded in 1968, Raba Kistner Inc.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | DOWLdowl.com HQ: Bellevue, WY, United StatesReported employees: 501-1,000 | Bellevue, WY, United States | 501-1,000 | Exact match | 584 contacts → |
“For more than 60 years, it has been the quality of our people that defines the DOWL difference.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | BL Companiesblcompanies.com HQ: Meriden, CT, United StatesReported employees: 201-500 | Meriden, CT, United States | 201-500 | Exact match | 574 contacts → |
“BL Companies is committed to providing quality, individualized service to clients.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | KSAksaeng.com HQ: Longview, TX, United StatesReported employees: 51-200 | Longview, TX, United States | 51-200 | Exact match | 546 contacts → |
“We Build People Who Build the Future KSA is an industry leader, providing a broad range of engineering, architecture, planning, surveying, and construction management services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 3,654 company matches
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Quality engineering firms: dataset insights
November 6, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
3,649 records in the displayed employee bands.
5 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 3,654 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 6, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Quality engineering firms by metro
- Quality engineering firms in New York109
- Quality engineering firms in Houston65
- Quality engineering firms in Austin43
- Quality engineering firms in Dallas41
- Quality engineering firms in Miami38
- Quality engineering firms in Tampa38
- Quality engineering firms in San Francisco34
- Quality engineering firms in Chicago32
- Quality engineering firms in San Antonio30
- Quality engineering firms in Los Angeles28
- Quality engineering firms in Charlotte26
- Quality engineering firms in Orlando26
- Quality engineering firms in Atlanta25
Questions about this company list
What does Exact match mean for quality engineering firms?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many quality engineering firms did RevenueBase find based in the United States?
The saved snapshot records 3,654 matching company records, 125,656 tracked contacts and 54,537 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 6, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Quality engineering firms by geography
- Quality engineering firms based in Melbourne, Australia
- Quality engineering firms based in Sydney, Australia
- Quality engineering firms based in Curitiba, Brazil
- Quality engineering firms based in Rio De Janeiro, Brazil
- Quality engineering firms based in Sao Paulo, Brazil
- Quality engineering firms based in Calgary, Canada
- Quality engineering firms based in Montreal, Canada
- Quality engineering firms based in Toronto, Canada
- Quality engineering firms based in Santiago, Chile
- Quality engineering firms based in Bogota, Colombia
- Quality engineering firms based in Cairo, Egypt
- Quality engineering firms based in Paris, France
Cite this list
RevenueBase Data Team. Top 25 quality engineering firms based in the United States. Snapshot: November 6, 2026. https://revenuebase.ai/companies/quality-engineering-firms/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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