Company lists · Data refreshed September 2026

Top 25 Software testing staffing agencies based in the United States

Name: Software testing staffing agencies 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 2,231 companies tracked

RevenueBase identified 2,231 software testing staffing agencies headquartered in the United States as of September 2026 and tracks 48,402 professional contacts across them, including 7,598 with verified work emails. New York is the largest hub.

This list covers software testing staffing agencies 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

2,231Companies

48,402Contacts tracked

7,598Verified emails

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The 25 largest software testing staffing agencies based in the United States

Ranked by team size

Top 25 of 2,231 software testing staffing agencies 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 software testing staffing agencies: 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	Applause	Strong evidence	Framingham, MA, United StatesHQ checked Sep 29, 2026	201-500	1,396 contacts →
	Strong evidence “Applause is the global leader in managed software testing services and digital quality.” Source: RevenueBase Database · checked Sep 29, 2026
2	TRS Staffing Solutions	Partial evidence	Greenville, United StatesHQ checked Sep 29, 2026	201-500	1,187 contacts →
	Partial evidence “TRS Staffing Solutions is a world leading engineering recruitment agency specialising in the recruitment and supply of professional, engineering, technical and field talent.” Source: RevenueBase Database · checked Sep 29, 2026
3	A1qa	Strong evidence	Decatur, GA, United StatesHQ checked Sep 29, 2026	1,001-5,000	980 contacts →
	Strong 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
4	Qasource	Partial evidence	Pleasanton, CA, United StatesHQ checked Sep 29, 2026	1,001-5,000	906 contacts →
	Partial 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
5	Remx The Workforce Experts	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 29, 2026	1,001-5,000	901 contacts →
	Partial evidence “RemX is the professional staffing division of EmployBridge, a $3 billion staffing organization with more than 600 offices in the U.S.” Source: RevenueBase Database · checked Sep 29, 2026
6	Integrated Resources, INC IRI	Partial evidence	Edison, NJ, United StatesHQ checked Sep 29, 2026	501-1,000	762 contacts →
	Partial evidence “Integrated Resources Inc.(IRI) is a professional staffing firm specializing in contract, consulting & full time positions in the area of Information Technology, Life Science and…” Source: RevenueBase Database · checked Sep 29, 2026
7	Consultadd INC	Partial evidence	New York, NY, United StatesHQ checked Sep 29, 2026	201-500	685 contacts →
	Partial evidence “Consultadd is a leading IT staffing and workforce solutions partner, helping U.S.” Source: RevenueBase Database · checked Sep 29, 2026
8	Trillium Staffing Solutions	Strong evidence	Kalamazoo, MI, United StatesHQ checked Sep 29, 2026	1,001-5,000	653 contacts →
	Strong evidence “Trillium Staffing Solutions is an employment service specializing in staffing, training, testing, on-site services, human resources and safety consulting.” Source: RevenueBase Database · checked Sep 29, 2026
9	Mitchell Martin INC	Partial evidence	New York, NY, United StatesHQ checked Sep 29, 2026	501-1,000	614 contacts →
	Partial evidence “Mitchell Martin Inc.(MMI) is one of the largest employee-owned staffing firms in the U.S, specializing in IT, healthcare, healthcare IT, accounting and finance, and professional…” Source: RevenueBase Database · checked Sep 29, 2026
10	Codeforce 360	Partial evidence	Alpharetta, GA, United StatesHQ checked Sep 29, 2026	501-1,000	591 contacts →
	Partial evidence “CodeForce 360 is a growing IT staffing company which thrives on a seasoned team of IT experts, a palpable international presence, and the ability to leverage the best of…” Source: RevenueBase Database · checked Sep 29, 2026
11	Entegee	Indirect evidence	Burlington, MA, United StatesHQ checked Sep 29, 2026	201-500	468 contacts →
	Indirect evidence “For the last sixty years Entegee has provided Fortune 500 and other companies with highly qualified engineering and technical personnel.” Source: RevenueBase Database · checked Sep 29, 2026
12	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
13	Bartech Staffing	Indirect evidence	Southfield, MI, United StatesHQ checked Sep 29, 2026	1,001-5,000	447 contacts →
	Indirect evidence “Trusted for Talent.” Source: RevenueBase Database · checked Sep 29, 2026
14	ILAB	Partial evidence	Indianapolis, IN, United StatesHQ checked Sep 29, 2026	501-1,000	417 contacts →
	Partial evidence “iLAB specializes in Software Quality Assurance services, providing global solutions to our customers.” Source: RevenueBase Database · checked Sep 29, 2026
15	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
16	Logigear Corporation	Partial evidence	San Mateo, CA, United StatesHQ checked Sep 29, 2026	501-1,000	403 contacts →
	Partial 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
17	Vyze INC	Partial evidence	Aldie, VA, United StatesHQ checked Sep 29, 2026	51-200	356 contacts →
	Partial evidence “Vyze Inc is a leading IT staffing company that helps small and big organizations acquire, engage and retain the right talents, when and how you need them, such as contract-hire…” Source: RevenueBase Database · checked Sep 29, 2026
18	Quality Professionals Q-Pros	Strong evidence	TX, United StatesHQ checked Sep 29, 2026	501-1,000	347 contacts →
	Strong 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
19	Labour Ready Temporary Service	Partial evidence	Tacoma, WA, United StatesHQ checked Sep 29, 2026	51-200	336 contacts →
	Partial evidence “We offer powered staffing solutions for your business.” Source: RevenueBase Database · checked Sep 29, 2026
20	Connect Search, LLC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	51-200	310 contacts →
	Partial 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 29, 2026
21	Itech Solutions	Partial evidence	Farmington, CT, United StatesHQ checked Sep 29, 2026	51-200	302 contacts →
	Partial evidence “iTech is a national IT staffing and recruiting firm.” Source: RevenueBase Database · checked Sep 29, 2026
22	Flexstaff Careers	Partial evidence	New Hyde Park, NY, United StatesHQ checked Sep 29, 2026	1,001-5,000	288 contacts →
	Partial evidence “FlexStaff is a staffing agency created to meet the needs of both job seekers and employers.” Source: RevenueBase Database · checked Sep 29, 2026
23	Crystal Equation Corporation	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	201-500	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 29, 2026
24	IT Associates	Partial evidence	Warrenville, IL, United StatesHQ checked Sep 29, 2026	51-200	257 contacts →
	Partial evidence “IT Associates is a boutique IT staffing and recruiting firm that provides full service contract, contract for hire, direct placement, pay rolling, and co-managed services…” Source: RevenueBase Database · checked Sep 29, 2026
25	Kett Engineering Corporation	Strong evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	501-1,000	250 contacts →
	Strong evidence “Kett Engineering Corporation has been operating for over 60 years and has spent the past 28 years dedicating its services to supporting the automotive testing and staffing needs…” 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: software testing staffing agencies. 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 software testing staffing agencies.
Partial evidence: Its own public description names part of software testing staffing agencies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name software testing staffing agencies. 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 2,231 software testing staffing agencies based in the United States

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Software testing staffing agencies based in the United States at a glance

As of Sep 29, 2026

15.7%Verified-email coverage

21.7Average contacts per company

11-50Median size (employees)

4.1%Largest-city concentration · New York

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

783

11-50

779

51-200

472

201-500

126

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 2,231 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 software testing staffing agencies, 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 “software testing staffing agencies”. 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 software testing staffing agencies), 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 software testing staffing agencies, 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, 7,598 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.

Software testing staffing agencies 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 software testing staffing agencies, 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 software testing staffing agencies are there based in the United States?

RevenueBase identified 2,231 software testing staffing agencies 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?

Applause, headquartered in Framingham, tops this list with the largest team on record.

Which city has the most software testing staffing agencies?

New York leads with 91 headquartered companies, followed by Houston (53) and Dallas (49).

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 7,598 verified decision-maker contacts tracked across these 2,231 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.