Company lists · Data refreshed September 2026

Top 25 Qa engineer staffing companies based in the United States

Name: Qa engineer staffing companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 312 companies tracked

RevenueBase identified 312 qa engineer staffing companies headquartered in the United States as of September 2026 and tracks 8,754 professional contacts across them, including 1,575 with verified work emails. New York is the largest hub.

This list covers qa engineer staffing companies headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 29, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 29, 2026 86% judged on-target in blind review

312Companies

8,754Contacts tracked

1,575Verified emails

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The 25 largest qa engineer staffing companies based in the United States

Ranked by team size

Top 25 of 312 qa engineer staffing companies based in the United States, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to qa engineer staffing companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	A1qa	Partial evidence	Decatur, GA, United StatesHQ checked Sep 29, 2026	1,001-5,000	980 contacts →
	Partial evidence “a1qa is a global software testing and QA outsourcing company trusted by IT firms and Fortune 500 enterprises to deliver software quality that holds under real-world pressure.” Source: RevenueBase Database · checked Sep 29, 2026
2	Qasource	Strong evidence	Pleasanton, CA, United StatesHQ checked Sep 29, 2026	1,001-5,000	906 contacts →
	Strong evidence “QASource is a leading provider of outsourced software quality engineering services, offering scalable and customizable QA solutions to clients worldwide.” Source: RevenueBase Database · checked Sep 29, 2026
3	Thinksys INC	Strong evidence	Sunnyvale, CA, United StatesHQ checked Sep 29, 2026	201-500	461 contacts →
	Strong evidence “ThinkSys is a QA outsourcing and software testing company for SaaS, FinTech, and Healthcare engineering teams that need reliable quality at scale.” Source: RevenueBase Database · checked Sep 29, 2026
4	ILAB	Indirect evidence	Indianapolis, IN, United StatesHQ checked Sep 29, 2026	501-1,000	417 contacts →
	Indirect evidence “iLAB specializes in Software Quality Assurance services, providing global solutions to our customers.” Source: RevenueBase Database · checked Sep 29, 2026
5	Astegic	Partial evidence	Falls Church, VA, United StatesHQ checked Sep 29, 2026	51-200	415 contacts →
	Partial evidence “For 15 years, Astegic has been helping Fortune 500 through startup companies with their Testing & QA needs.” Source: RevenueBase Database · checked Sep 29, 2026
6	Logigear Corporation	Indirect evidence	San Mateo, CA, United StatesHQ checked Sep 29, 2026	501-1,000	403 contacts →
	Indirect evidence “We are celebrating 30 years of testing excellence and innovation at LogiGear, we're proud to be a cornerstone in our clients' journeys, delivering confidence not just in our…” Source: RevenueBase Database · checked Sep 29, 2026
7	Quality Professionals Q-Pros	Indirect evidence	TX, United StatesHQ checked Sep 29, 2026	501-1,000	347 contacts →
	Indirect evidence “Quality Professionals (Q-Pros) is a global independent software Quality Assurance and Testing services provider supporting enterprise and government organizations.” Source: RevenueBase Database · checked Sep 29, 2026
8	Impactqa	Partial evidence	Plano, United StatesHQ checked Sep 29, 2026	201-500	181 contacts →
	Partial evidence “Welcome to ImpactQA – Where Excellence Meets Innovation in Software Testing and QA Consulting About Us ImpactQA is a premier Software Testing and QA consultancy delivering…” Source: RevenueBase Database · checked Sep 29, 2026
9	Flexasoft	Indirect evidence	Redmond, WA, United StatesHQ checked Sep 29, 2026	51-200	128 contacts →
	Indirect evidence “FleXasoft is a Redmond, Washington based software consulting firm specializing in Software Development and Quality Assurance Testing.” Source: RevenueBase Database · checked Sep 29, 2026
10	Lenora Systems INC	Indirect evidence	Redmond, WA, United StatesHQ checked Sep 29, 2026	501-1,000	125 contacts →
	Indirect evidence “Lenora Systems brand represents a dedication to providing high-quality IT professionals who can get job done.” Source: RevenueBase Database · checked Sep 29, 2026
11	RTTS	Partial evidence	NY, United StatesHQ checked Sep 29, 2026	51-200	120 contacts →
	Partial evidence “RTTS is the premier pure-play QA & Testing organization that specializes in Test Automation.” Source: RevenueBase Database · checked Sep 29, 2026
12	Aspiritech	Indirect evidence	Evanston, IL, United StatesHQ checked Sep 29, 2026	51-200	114 contacts →
	Indirect evidence “Aspiritech is a premier quality assurance and testing services company located in metropolitan Chicago.” Source: RevenueBase Database · checked Sep 29, 2026
13	Mumba Technologies, INC	Indirect evidence	San Jose, CA, United StatesHQ checked Sep 29, 2026	11-50	95 contacts →
	Indirect evidence “WHO WE ARE?” Source: RevenueBase Database · checked Sep 29, 2026
14	Trillium Professional	Strong evidence	Rochester Hills, MI, United StatesHQ checked Sep 29, 2026	201-500	87 contacts →
	Strong evidence “Since 1984, Trillium Technical and its affiliates have been staffing professional IT and Engineering candidates in positions around the country.” Source: RevenueBase Database · checked Sep 29, 2026
15	DXE Staffing And Quality Inspection	Partial evidence	Princeton, IN, United StatesHQ checked Sep 29, 2026	501-1,000	84 contacts →
	Partial evidence “Since 2004, DX Enterprises has been your trusted partner for top-tier staffing solutions and quality inspections for our hundreds of clients.” Source: RevenueBase Database · checked Sep 29, 2026
16	Bentley Global Resources And Staffing Services	Partial evidence	Oldsmar, FL, United StatesHQ checked Sep 29, 2026	201-500	83 contacts →
	Partial evidence “Bentley Global Resources provides high-end critically skilled contractors specializing in Hardware and Software Product Engineering to clients in need of such specialized skills.” Source: RevenueBase Database · checked Sep 29, 2026
17	Softensity INC	Indirect evidence	Marietta, GA, United StatesHQ checked Sep 29, 2026	1,001-5,000	82 contacts →
	Indirect evidence “Committed to Your Success At Softensity, we’re passionate about building better software by starting with better teams.” Source: RevenueBase Database · checked Sep 29, 2026
18	Swat Solutions, INC	Partial evidence	St. Louis Park, United StatesHQ checked Sep 29, 2026	51-200	82 contacts →
	Partial evidence “SWAT is a leading QA company in the technology industry.” Source: RevenueBase Database · checked Sep 29, 2026
19	The FDA Group	Indirect evidence	Boston, MA, United StatesHQ checked Sep 29, 2026	51-200	75 contacts →
	Indirect evidence “Finding top talent in the hyper-competitive life science industries gets harder each day.” Source: RevenueBase Database · checked Sep 29, 2026
20	Shasta QA	Partial evidence	Redding, CA, United StatesHQ checked Sep 29, 2026	51-200	74 contacts →
	Partial evidence “Shasta QA is an American OurSourcing software-testing company with offices located in Northern California and the Midwest.” Source: RevenueBase Database · checked Sep 29, 2026
21	Comtech Global, INC	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 29, 2026	51-200	71 contacts →
	Indirect evidence “Comtech Global Inc is a provider of Information Technology services.” Source: RevenueBase Database · checked Sep 29, 2026
22	Carlton National Resources	Partial evidence	Wakefield, MA, United StatesHQ checked Sep 29, 2026	51-200	62 contacts →
	Partial evidence “At Carlton National Resources, we operate through two specialized divisions: Software/Hardware Engineering and Life Sciences.” Source: RevenueBase Database · checked Sep 29, 2026
23	Forceone Solutions	Indirect evidence	Greer, SC, United StatesHQ checked Sep 29, 2026	201-500	60 contacts →
	Indirect evidence “ForceOne Solutions is a company dedicated to quality services and high skilled associates.” Source: RevenueBase Database · checked Sep 29, 2026
24	Etcon Employment Solutions	Indirect evidence	Gainesville, GA, United StatesHQ checked Sep 29, 2026	1,001-5,000	59 contacts →
	Indirect evidence “ETCON Employment Solutions was founded in 1985 to serve employers seeking higher-quality candidates.” Source: RevenueBase Database · checked Sep 29, 2026
25	Tekbiz Solutions LLC	Partial evidence	Boca Raton, FL, United StatesHQ checked Sep 29, 2026	51-200	58 contacts →
	Partial evidence “Tekbiz Solutions is a Florida Consulting Company and leader in providing IT Contingent Staffing and Technical Resource Services for the Fortune 500 and leading Mid-market…” Source: RevenueBase Database · checked Sep 29, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: qa engineer staffing companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names qa engineer staffing companies.
Partial evidence: Its own public description names part of qa engineer staffing companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name qa engineer staffing companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 312 qa engineer staffing companies based in the United States

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Qa engineer staffing companies based in the United States at a glance

As of Sep 29, 2026

18.0%Verified-email coverage

28.1Average contacts per company

11-50Median size (employees)

2.6%Largest-city concentration · New York

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

122

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 312 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among qa engineer staffing companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “qa engineer staffing companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names qa engineer staffing companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among qa engineer staffing companies, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 1,575 across the full list. 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 September 29, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names qa engineer staffing companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many qa engineer staffing companies are there based in the United States?

RevenueBase identified 312 qa engineer staffing companies headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

A1qa, headquartered in Decatur, tops this list with the largest team on record.

Which city has the most qa engineer staffing companies?

New York leads with 8 headquartered companies, followed by San Francisco (8) and San Jose (8).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,575 verified decision-maker contacts tracked across these 312 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 29, 2026.

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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 Smart Search, 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.