Company lists · Data refreshed September 2026
Top 25 Engineering recruitment firms based in Chicago, United States
RevenueBase identified 384 engineering recruitment firms headquartered in Chicago, United States as of September 2026 and tracks 12,591 professional contacts across them, including 3,814 with verified work emails and 4,123 with mobile numbers. Houston is the largest hub.
This list covers engineering recruitment firms headquartered in Chicago, 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 12, 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.
The 25 largest engineering recruitment firms based in Chicago, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,840 contacts → | ||||
Indirect evidence “Addison Group provides comprehensive talent solutions and consulting services across diverse practice areas, including Non-Clinical Healthcare, Information Technology (IT), Human…” Source: RevenueBase Database · checked Sep 12, 2026Thanks. The Data Team will review it. | |||||
| 2 | 1,753 contacts → | ||||
Partial evidence “Medix provides workforce solutions to clients and creates opportunity for talent in the Healthcare, Life Sciences, Engineering and Technology fields.” Source: RevenueBase Database · checked Sep 12, 2026Thanks. The Data Team will review it. | |||||
| 3 | 674 contacts → | ||||
Partial evidence “HBK Engineering, LLC a Quanta Services Company is a fully licensed, professional engineering design firm headquartered in downtown Chicago providing civil, environmental…” Source: RevenueBase Database · checked Sep 12, 2026Thanks. The Data Team will review it. | |||||
| 4 | 605 contacts → | ||||
Indirect evidence “Keeping business transformations on track is essential to maintaining market advantage.” Source: RevenueBase Database · checked Sep 12, 2026Thanks. The Data Team will review it. | |||||
| 5 | 569 contacts → | ||||
Partial evidence “Enventure is a trusted provider of Building Engineering, Plant Design, and Compliance solutions with offices in the Chicago and delivery centres in Bangalore, Shivamogga, Hubli…” Source: RevenueBase Database · checked Sep 12, 2026Thanks. The Data Team will review it. | |||||
| 6 | 432 contacts → | ||||
Indirect evidence “In 1979, Collins Engineers, Inc.” Source: RevenueBase Database · checked Sep 12, 2026Thanks. The Data Team will review it. | |||||
| 7 | 374 contacts → | ||||
Indirect evidence “We're a digital, creative, and marketing staffing agency doing things a little differently.” Source: RevenueBase Database · checked Sep 12, 2026Thanks. The Data Team will review it. | |||||
| 8 | 362 contacts → | ||||
Partial evidence “Primera Engineers is a mid-size, full-service, woman-owned (WBE) engineering design and consulting firm specializing in four areas of expertise: buildings, transportation…” Source: RevenueBase Database · checked Sep 12, 2026Thanks. The Data Team will review it. | |||||
| 9 | 310 contacts → | ||||
Indirect evidence “Connect Search, LLC is a boutique staffing firm founded by a group of partners who share the same vision and are all recruiters at heart.” Source: RevenueBase Database · checked Sep 12, 2026Thanks. The Data Team will review it. | |||||
| 10 | 262 contacts → | ||||
Indirect evidence “Crystal Equation (CE) is a certified Women-Owned Business that empowers people and advances technology initiatives by building trust.” Source: RevenueBase Database · checked Sep 12, 2026Thanks. The Data Team will review it. | |||||
| 11 | 248 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 12, 2026Thanks. The Data Team will review it. | |||||
| 12 | 225 contacts → | ||||
Indirect evidence “A bold vision can only take you so far.” Source: RevenueBase Database · checked Sep 12, 2026Thanks. The Data Team will review it. | |||||
| 13 | 224 contacts → | ||||
Partial evidence “Infrastructure Engineering Inc.(IEI) is a majority African American-owned, multi-disciplinary consulting firm with offices in eight states that delivers design engineering…” Source: RevenueBase Database · checked Sep 12, 2026Thanks. The Data Team will review it. | |||||
| 14 | 208 contacts → | ||||
Indirect evidence “A global company, ESD is a leader in Improving Society Through the Built Environment.” Source: RevenueBase Database · checked Sep 12, 2026Thanks. The Data Team will review it. | |||||
| 15 | 162 contacts → | ||||
Indirect evidence “About Brilliant® Brilliant is an award-winning staffing and recruiting firm that provides direct-hire and contract staffing services in accounting, finance, technology, and…” Source: RevenueBase Database · checked Sep 12, 2026Thanks. The Data Team will review it. | |||||
| 16 | 148 contacts → | ||||
Indirect evidence “City Staffing partners with organizations that need talent fast and at scale-without sacrificing quality.” Source: RevenueBase Database · checked Sep 12, 2026Thanks. The Data Team will review it. | |||||
| 17 | 134 contacts → | ||||
Indirect evidence “Hirewell is a global talent solutions provider that combines domain expert recruiters with modern hiring strategy to deliver people who make a difference.” Source: RevenueBase Database · checked Sep 12, 2026Thanks. The Data Team will review it. | |||||
| 18 | 114 contacts → | ||||
Partial evidence “Founded upon a vision of challenging and changing the energy infrastructure to help light up the world, KDM specializes in engineering consulting and design, program and project…” Source: RevenueBase Database · checked Sep 12, 2026Thanks. The Data Team will review it. | |||||
| 19 | 112 contacts → | ||||
Indirect evidence “Proficient Now Inc is a nationwide talent firm located in Lisle, IL.” Source: RevenueBase Database · checked Sep 12, 2026Thanks. The Data Team will review it. | |||||
| 20 | 111 contacts → | ||||
Indirect evidence “Scale Virtually is a world-class staffing agency that finds brilliant talent and fully integrates them into your business.” Source: RevenueBase Database · checked Sep 12, 2026Thanks. The Data Team will review it. | |||||
| 21 | 110 contacts → | ||||
Partial evidence “For more than 30 years, SINGH + Associates has been meeting and exceeding our clients’ expectations for high quality planning, design and engineering services delivered with care…” Source: RevenueBase Database · checked Sep 12, 2026Thanks. The Data Team will review it. | |||||
| 22 | 104 contacts → | ||||
Indirect evidence “MMD Services Inc.” Source: RevenueBase Database · checked Sep 12, 2026Thanks. The Data Team will review it. | |||||
| 23 | 91 contacts → | ||||
Indirect evidence “FactoryFix helps employers and staffing firms hire industrial talent more efficiently.” Source: RevenueBase Database · checked Sep 12, 2026Thanks. The Data Team will review it. | |||||
| 24 | 89 contacts → | ||||
Indirect evidence “Founded in 1986, Harmer is a trusted recruiting partner specializing in Accounting, Finance, and Information Technology.” Source: RevenueBase Database · checked Sep 12, 2026Thanks. The Data Team will review it. | |||||
| 25 | 86 contacts → | ||||
Partial evidence “Elara Engineering is a full-service Mechanical, Electrical, Plumbing, Fire Protection, and Information Technology (MEPFPIT) consulting engineering firm specializing in the…” Source: RevenueBase Database · checked Sep 12, 2026Thanks. The Data Team will review it. | |||||
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: engineering recruitment firms. 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 engineering recruitment firms.
- Partial evidence
- Its own public description names part of engineering recruitment firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name engineering recruitment firms. 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 384 engineering recruitment firms based in Chicago, United States
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Engineering recruitment firms based in Chicago, United States at a glance
As of Sep 12, 2026Companies by employee count
Freshness & accuracy
How recently the business emails were verified and the company information checked
Email last verified
Median 15.0dCompany record updated
Median 75.0dHow 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 engineering recruitment firms, 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 Chicago, United States whose own description of what they do matches “engineering recruitment firms”. 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 engineering recruitment firms), 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 engineering recruitment firms, and records with no verified work email. Companies headquartered outside Chicago 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, 3,814 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 12, 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.
Engineering recruitment firms by metro in the United States
- Engineering recruitment firms in Houston259
- Engineering recruitment firms in New York164
- Engineering recruitment firms in Austin111
- Engineering recruitment firms in Dallas79
- Engineering recruitment firms in Miami79
- Engineering recruitment firms in Chicago79
- Engineering recruitment firms in Tampa76
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 engineering recruitment firms, 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 engineering recruitment firms are there based in Chicago, United States?
RevenueBase identified 384 engineering recruitment firms headquartered in Chicago, 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?
Addison Group, headquartered in Chicago, tops this list with the largest team on record.
Which city has the most engineering recruitment firms?
Houston leads with 259 headquartered companies, followed by New York (164) and Austin (111).
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 3,814 verified decision-maker contacts tracked across these 384 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 12, 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.
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