Company lists · Data refreshed September 2026

Top 25 Ad tech recruitment firms based in the United States

Name: Ad tech recruitment firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 6,068 companies tracked

RevenueBase identified 6,068 ad tech recruitment firms headquartered in the United States as of September 2026 and tracks 111,275 professional contacts across them, including 26,983 with verified work emails. New York is the largest hub.

This list covers ad tech recruitment firms 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 27, 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 27, 2026 86% judged on-target in blind review

6,068Companies

111,275Contacts tracked

26,983Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest ad tech recruitment firms based in the United States

Ranked by team size

Top 25 of 6,068 ad tech recruitment firms based in the United States, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to ad tech recruitment firms: 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	Robert Half	Indirect evidence	Menlo Park, CA, United StatesHQ checked Sep 27, 2026	10001+	25,574 contacts →
	Indirect evidence “At Robert Half, we prioritize your security-if you believe you've encountered a scam or fraudulent recruiter, please report it immediately to All Robert Half recruiters…” Source: RevenueBase Database · checked Sep 27, 2026
2	24 Seven Talent	Indirect evidence	NY, United StatesHQ checked Sep 27, 2026	n/a	2,554 contacts →
	Indirect evidence “24 Seven partners with companies to get marketing, creative, and digital work done by providing the right talent, innovation, and insights.” Source: RevenueBase Database · checked Sep 27, 2026
3	Taboola	Indirect evidence	New York, NY, United StatesHQ checked Sep 27, 2026	1,001-5,000	1,979 contacts →
	Indirect evidence “Taboola empowers businesses to grow through performance advertising technology that goes beyond search and social and delivers measurable outcomes at scale.” Source: RevenueBase Database · checked Sep 27, 2026
4	TEADS	Indirect evidence	New York, NY, United StatesHQ checked Sep 27, 2026	1,001-5,000	1,789 contacts →
	Indirect evidence “Teads Holding Co.(“Teads”)(Nasdaq: TEAD) is a leading omnichannel advertising platform focused on driving outcomes for brand and performance advertisers across screens.” Source: RevenueBase Database · checked Sep 27, 2026
5	GPAC	Partial evidence	Sioux Falls, SD, United StatesHQ checked Sep 27, 2026	501-1,000	1,742 contacts →
	Partial evidence “gpac is the #1 digital recruitment platform, built on the belief that staffing is fundamentally a people business.” Source: RevenueBase Database · checked Sep 27, 2026
6	Pubmatic	Strong evidence	Redwood City, CA, United StatesHQ checked Sep 27, 2026	501-1,000	1,297 contacts →
	Strong evidence “PubMatic is the leading AI-powered ad tech company delivering digital advertising performance.” Source: RevenueBase Database · checked Sep 27, 2026
7	Mediaocean	Indirect evidence	New York, NY, United StatesHQ checked Sep 27, 2026	1,001-5,000	1,050 contacts →
	Indirect evidence “Mediaocean is powering the future of the advertising ecosystem with technology that empowers brands and agencies to deliver impactful omnichannel marketing experiences.” Source: RevenueBase Database · checked Sep 27, 2026
8	Self Opportunity, INC	Indirect evidence	Lewisville, TX, United StatesHQ checked Sep 27, 2026	n/a	969 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 27, 2026
9	XR Extreme Reach	Indirect evidence	Hudson Yards, NY, United StatesHQ checked Sep 27, 2026	1,001-5,000	940 contacts →
	Indirect evidence “XR Extreme Reach is the leading platform for managing advertising operations.” Source: RevenueBase Database · checked Sep 27, 2026
10	CMI Career Management INC	Indirect evidence	Vienna, VA, United StatesHQ checked Sep 27, 2026	n/a	818 contacts →
	Indirect evidence “CMI (Career Management Inc.) is the premier provider of Sales & Marketing search / recruiting for small to mid sized software & technology companies.” Source: RevenueBase Database · checked Sep 27, 2026
11	Primary Services	Indirect evidence	Houston, TX, United StatesHQ checked Sep 27, 2026	n/a	766 contacts →
	Indirect evidence “Primary Services provides job opportunities for Accounting/Financial, Information Technology, HR, Recruiting, Marketing, Procurement, Call Center and Administrative professionals.” Source: RevenueBase Database · checked Sep 27, 2026
12	Cybercoders	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 27, 2026	201-500	531 contacts →
	Indirect evidence “CyberCoders, a division of ASGN Incorporated, is a leading permanent placement recruiting firm.” Source: RevenueBase Database · checked Sep 27, 2026
13	Okaya Infocom	Indirect evidence	Albany, NY, United StatesHQ checked Sep 27, 2026	201-500	526 contacts →
	Indirect evidence “OKAYA was established in 2006 with the mission to enable success for our partners through trust and commitment.” Source: RevenueBase Database · checked Sep 27, 2026
14	Appcast, INC	Indirect evidence	Lebanon, NH, United StatesHQ checked Sep 27, 2026	501-1,000	511 contacts →
	Indirect evidence “Appcast is the award-winning, global leader in programmatic job advertising technology.” Source: RevenueBase Database · checked Sep 27, 2026
15	Tombras	Indirect evidence	Knoxville, TN, United StatesHQ checked Sep 27, 2026	201-500	496 contacts →
	Indirect evidence “Tombras is a 450+ person, full-service agency with a digital mindset.” Source: RevenueBase Database · checked Sep 27, 2026
16	MONDO	Partial evidence	New York, NY, United StatesHQ checked Sep 27, 2026	51-200	484 contacts →
	Partial evidence “As the largest, national staffing agency specializing exclusively in high-end, niche IT, Tech, and Digital Marketing talent, staffing is more than just our job.” Source: RevenueBase Database · checked Sep 27, 2026
17	Affinity Global	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	201-500	446 contacts →
	Indirect evidence “Affinity is a leading global AdTech company, empowering publishers to maximize revenue and enabling advertisers to reach their ideal audiences.” Source: RevenueBase Database · checked Sep 27, 2026
18	VERVE	Partial evidence	New York, NY, United StatesHQ checked Sep 27, 2026	501-1,000	436 contacts →
	Partial evidence “Verve is a global leading advertising technology company, connecting advertisers seeking to buy digital ad space with publishers monetizing their content.” Source: RevenueBase Database · checked Sep 27, 2026
19	JOB News USA	Partial evidence	Louisville, KY, United StatesHQ checked Sep 27, 2026	n/a	421 contacts →
	Partial evidence “Job News is your trusted local source for multimedia recruitment advertising across the U.S.” Source: RevenueBase Database · checked Sep 27, 2026
20	Viant Technology	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 27, 2026	201-500	418 contacts →
	Indirect evidence “Viant Technology Inc.(NASDAQ: DSP) is a leader in AI-powered programmatic advertising, dedicated to driving innovation in digital marketing.” Source: RevenueBase Database · checked Sep 27, 2026
21	Cps, INC	Indirect evidence	Westchester, IL, United StatesHQ checked Sep 27, 2026	51-200	410 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 27, 2026
22	Unified	Indirect evidence	NY, United StatesHQ checked Sep 27, 2026	201-500	399 contacts →
	Indirect evidence “A best in class team of digital experts leveraging purpose built technology to deliver operational excellence and insights across paid social, programmatic, OTT and digital audio.” Source: RevenueBase Database · checked Sep 27, 2026
23	Randall Reilly	Indirect evidence	Tuscaloosa, AL, United StatesHQ checked Sep 27, 2026	51-200	389 contacts →
	Indirect evidence “Randall Reilly delivers full scale talent acquisition, turning talent challenges into growth opportunities.” Source: RevenueBase Database · checked Sep 27, 2026
24	Artisan Talent	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	n/a	374 contacts →
	Indirect evidence “We're a digital, creative, and marketing staffing agency doing things a little differently.” Source: RevenueBase Database · checked Sep 27, 2026
25	Stevendouglas	Indirect evidence	Sunrise, FL, United StatesHQ checked Sep 27, 2026	201-500	372 contacts →
	Indirect evidence “Since 1983, StevenDouglas has established itself as a recognized leader in providing access to top talent, driven by highly tenured and experienced professionals committed to…” Source: RevenueBase Database · checked Sep 27, 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: ad tech 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 ad tech recruitment firms.
Partial evidence: Its own public description names part of ad tech recruitment firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name ad tech 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 6,068 ad tech recruitment firms based in the United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 26,983 reachable decision-makers.

Free signup · no credit card

View the full list →

Ad tech recruitment firms based in the United States at a glance

As of Sep 27, 2026

24.2%Verified-email coverage

18.3Average contacts per company

1-10Median size (employees)

9.1%Largest-city concentration · New York

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

3,665

11-50

1,662

51-200

538

201-500

134

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 6,068 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 ad tech 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 the United States whose own description of what they do matches “ad tech 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 ad tech 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 ad tech recruitment firms, 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, 26,983 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 27, 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.

Ad tech recruitment firms by metro

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 ad tech 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 ad tech recruitment firms are there based in the United States?

RevenueBase identified 6,068 ad tech recruitment firms 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?

Robert Half, headquartered in Menlo Park, tops this list with the largest team on record.

Which city has the most ad tech recruitment firms?

New York leads with 552 headquartered companies, followed by Los Angeles (215) and San Francisco (164).

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 26,983 verified decision-maker contacts tracked across these 6,068 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 27, 2026.

Ready to reach these companies? Verified emails and direct dials for all 6,068 ad tech recruitment firms based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

Ad tech recruitment firms by geography

Browse the directory

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.