Company lists · Data refreshed September 2026

Top 25 Ad tech recruitment firms worldwide

Name: Ad tech recruitment firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 33,334 companies tracked

RevenueBase identified 33,334 company matches for ad tech recruitment firms worldwide as of September 2026 and tracks 357,037 professional contacts across them, including 75,876 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for ad tech recruitment firms worldwide, 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 September 27, 2026. Country and city lists for ad tech recruitment firms follow the table.

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.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 27, 2026 How this list was built

33,334Companies

357,037Contacts tracked

75,876Verified emails

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

The 25 largest ad tech recruitment firms worldwide

Ranked by team size

Top 25 of 33,334 company matches for ad tech recruitment firms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 27, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Robert Half	Exact match	Menlo Park, CA, United StatesHQ recorded Sep 27, 2026	10001+	25,574 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
2	PHD	Exact match	Bankside, GermanyHQ recorded Sep 27, 2026	1,001-5,000	4,068 contacts →
	Exact match “Welcome to PHD.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
3	24 Seven Talent	Exact match	NY, United StatesHQ recorded Sep 27, 2026	n/a	2,554 contacts →
	Exact match “24 Seven partners with companies to get marketing, creative, and digital work done by providing the right talent, innovation, and insights.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
4	media.net	Exact match	Dubai, United Arab EmiratesHQ recorded Sep 27, 2026	1,001-5,000	2,011 contacts →
	Exact match “Media.net is an independent advertising technology platform that helps publishers, advertisers, and agencies achieve measurable outcomes across all formats and mediums.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
5	Taboola	Exact match	New York, NY, United StatesHQ recorded Sep 27, 2026	1,001-5,000	1,979 contacts →
	Exact match “Taboola empowers businesses to grow through performance advertising technology that goes beyond search and social and delivers measurable outcomes at scale.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
6	TEADS	Exact match	New York, NY, United StatesHQ recorded Sep 27, 2026	1,001-5,000	1,789 contacts →
	Exact match “Teads Holding Co.(“Teads”)(Nasdaq: TEAD) is a leading omnichannel advertising platform focused on driving outcomes for brand and performance advertisers across screens.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
7	GPAC	Exact match	Sioux Falls, SD, United StatesHQ recorded Sep 27, 2026	501-1,000	1,742 contacts →
	Exact match “gpac is the #1 digital recruitment platform, built on the belief that staffing is fundamentally a people business.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
8	Magna Infotech	Exact match	Bangalore, IndiaHQ recorded Sep 27, 2026	10001+	1,702 contacts →
	Exact match “We are the largest IT staff augmentation provider in India, with employees spread across 500+ skill sets.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
9	Accent Jobs	Exact match	Roeselare, BelgiumHQ recorded Sep 27, 2026	1,001-5,000	1,469 contacts →
	Exact match “Accent is the recruitment partner for every company and every job seeker.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
10	Live Connections	Exact match	Chennai, IndiaHQ recorded Sep 27, 2026	501-1,000	1,421 contacts →
	Exact match “LIVE CONNECTIONS is a Search & Recruitment Organization that specializes in finding and placing professionals across all sectors.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
11	Pubmatic	Exact match	Redwood City, CA, United StatesHQ recorded Sep 27, 2026	501-1,000	1,297 contacts →
	Exact match “PubMatic is the leading AI-powered ad tech company delivering digital advertising performance.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
12	Harvey Nash	Exact match	London, United KingdomHQ recorded Sep 27, 2026	5,001-10,000	1,248 contacts →
	Exact match “We’re Harvey Nash, and we build amazing technology and digital teams.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
13	Brook Street	Exact match	Uxbridge, United KingdomHQ recorded Sep 27, 2026	501-1,000	1,214 contacts →
	Exact match “For 75 years, the middle is where we've worked best.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
14	Mediaocean	Exact match	New York, NY, United StatesHQ recorded Sep 27, 2026	1,001-5,000	1,050 contacts →
	Exact match “Mediaocean is powering the future of the advertising ecosystem with technology that empowers brands and agencies to deliver impactful omnichannel marketing experiences.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
15	Covenant Consultants	Exact match	Chennai, IndiaHQ recorded Sep 27, 2026	501-1,000	1,022 contacts →
	Exact match “Covenant Consultants is a premier recruitment firm with over 22 years of excellence in talent acquisition, placing candidates across 71+ industries.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
16	Studentconsulting	Exact match	Luleå, SwedenHQ recorded Sep 27, 2026	10001+	969 contacts →
	Exact match “We are one of the leading recruitment and staffing companies in Scandinavia, specialized in students, academics and young professionals.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
17	Self Opportunity, INC	Exact match	Lewisville, TX, United StatesHQ recorded Sep 27, 2026	n/a	969 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
18	XR Extreme Reach	Exact match	Hudson Yards, NY, United StatesHQ recorded Sep 27, 2026	1,001-5,000	940 contacts →
	Exact match “XR Extreme Reach is the leading platform for managing advertising operations.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
19	Adform	Exact match	Copenhagen, DenmarkHQ recorded Sep 27, 2026	501-1,000	847 contacts →
	Exact match “Adform is the most powerful and safe media buying platform in the world.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
20	Smartly	Exact match	Helsinki, FinlandHQ recorded Sep 27, 2026	501-1,000	827 contacts →
	Exact match “Smartly is the AI-powered advertising technology company transforming ad experiences for brands and their consumers.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
21	CMI Career Management INC	Exact match	Vienna, VA, United StatesHQ recorded Sep 27, 2026	n/a	818 contacts →
	Exact match “CMI (Career Management Inc.) is the premier provider of Sales & Marketing search / recruiting for small to mid sized software & technology companies.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
22	Randstad Nederland	Exact match	Diemen, NetherlandsHQ recorded Sep 27, 2026	1,001-5,000	794 contacts →
	Exact match “Wij zijn jouw partner voor talent.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
23	Primary Services	Exact match	Houston, TX, United StatesHQ recorded Sep 27, 2026	n/a	766 contacts →
	Exact match “Primary Services provides job opportunities for Accounting/Financial, Information Technology, HR, Recruiting, Marketing, Procurement, Call Center and Administrative professionals.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
24	Halian Managed Services, Recruitment Agency & Contract Staffing	Exact match	St. Albans, United KingdomHQ recorded Sep 27, 2026	501-1,000	744 contacts →
	Exact match “Halian, with nearly 30 years of experience across the Middle East, Europe, and the US, is dedicated to shaping the future of Workforce Management and Managed Services.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
25	Equativ	Exact match	Paris, FranceHQ recorded Sep 27, 2026	501-1,000	705 contacts →
	Exact match “Equativ is a leading independent media platform that empowers advertisers and publishers to achieve real outcomes across the entire digital ecosystem.” Recorded in the RevenueBase company graph · Sep 27, 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 “ad tech recruitment 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 33,334 ad tech recruitment firms worldwide

See the full list, filter by size, metro and specialty, and access 75,876 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Ad tech recruitment firms worldwide at a glance

As of Sep 27, 2026

21.3%Verified-email coverage

10.7Average contacts per company

1-10Median size (employees)

6.0%Largest-city concentration · London

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

21,490

11-50

8,937

51-200

2,090

201-500

493

501-1,000

141

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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.
Coverage: Every country. Country and city lists for ad tech recruitment firms are linked below.
What qualifies: Company records worldwide whose business descriptions match “ad tech recruitment 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. 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 75,876 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 September 27, 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.

Ad tech recruitment firms by location

128 lists · largest first

Every Ad tech recruitment firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 “ad tech recruitment firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many ad tech recruitment firms are there worldwide?

RevenueBase identified 33,334 company matches for ad tech recruitment firms worldwide as of September 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?

Robert Half tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most ad tech recruitment firms?

The United States leads with 6,068 companies, followed by the United Kingdom (4,710) and India (2,996). Every ad tech recruitment firms list by country and city is linked on this page.

Which city has the most ad tech recruitment firms?

London leads with 1994 company records, followed by New York (554) and Paris (383).

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 75,876 professional contacts with verified work emails tracked across these 33,334 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 September 27, 2026.

Ready to reach these companies? Verified emails and direct dials for all 33,334 ad tech recruitment firms worldwide. Start with a free account, no credit card.

Download this list →

Related lists

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 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.