Company lists · Data refreshed September 2026

Top 25 Software developer staffing based in the United States

Name: Software developer staffing based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 6, 2026 10,482 companies tracked

RevenueBase identified 10,482 software developer staffing headquartered in the United States as of September 2026 and tracks 327,843 professional contacts across them, including 60,860 with verified work emails and 85,302 with mobile numbers. New York is the largest hub.

This list covers software developer staffing 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 6, 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 6, 2026 86% judged on-target in blind review

10,482Companies

327,843Contacts tracked

60,860Verified emails

85,302Mobile numbers

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The 25 largest software developer staffing based in the United States

Ranked by team size

Top 25 of 10,482 software developer staffing based in the United States, ranked by team size, largest first. Data refreshed Sep 6, 2026. RevenueBase Smart Search rates how each company's information relates to software developer staffing: 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 6, 2026	10001+	25,574 contacts →
	“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: company website · checked Sep 6, 2026
2	Insight Global	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 6, 2026	n/a	15,553 contacts →
	“Insight Global is an international talent and consulting company that delivers business outcomes in an ever-changing world.” Source: company website · checked Sep 6, 2026
3	Kforce INC	Partial evidence	Tampa, FL, United StatesHQ checked Sep 6, 2026	1,001-5,000	6,147 contacts →
	“Kforce is a solutions firm specializing in technology, finance and accounting, and professional staffing services.” Source: company website · checked Sep 6, 2026
4	Appleone Employment Services	Indirect evidence	Glendale, CA, United StatesHQ checked Sep 6, 2026	1,001-5,000	4,627 contacts →
	“AppleOne Employment Services is a full-service employment company.” Source: company website · checked Sep 6, 2026
5	Spherion	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 6, 2026	10001+	4,263 contacts →
	“We’re Spherion-a staffing and recruiting pioneer that’s been driving careers and helping businesses grow for over 75 years.” Source: company website · checked Sep 6, 2026
6	Artech L.L.C	Partial evidence	Morristown, NJ, United StatesHQ checked Sep 6, 2026	5,001-10,000	3,674 contacts →
	“Artech is the largest Women-Owned IT Staffing Firm in the U.S, with 34+ years of experience powering workforce transformation for Fortune 500 companies and public-sector…” Source: company website · checked Sep 6, 2026
7	Elwood Staffing Services, INC	Indirect evidence	Columbus, IN, United StatesHQ checked Sep 6, 2026	n/a	3,481 contacts →
	“Whether you're looking to find your next great employee, make your next career move, or help a friend find a new job, you can trust that Elwood puts its passion and expertise into…” Source: company website · checked Sep 6, 2026
8	Beacon Hill	Partial evidence	Boston, MA, United StatesHQ checked Sep 6, 2026	1,001-5,000	3,238 contacts →
	“Beacon Hill was founded to set a new standard in search, career placement and flexible staffing.” Source: company website · checked Sep 6, 2026
9	Dexian	Partial evidence	Mclean, VA, United StatesHQ checked Sep 6, 2026	1,001-5,000	2,852 contacts →
	“Dexian is a leading provider of staffing, IT, and workforce solutions with nearly employees and 70 locations worldwide.” Source: company website · checked Sep 6, 2026
10	24 Seven Talent	Indirect evidence	NY, United StatesHQ checked Sep 6, 2026	n/a	2,554 contacts →
	“24 Seven partners with companies to get marketing, creative, and digital work done by providing the right talent, innovation, and insights.” Source: company website · checked Sep 6, 2026
11	Airswift	Indirect evidence	Houston, TX, United StatesHQ checked Sep 6, 2026	501-1,000	2,128 contacts →
	“We support STEM professionals looking for jobs with exceptional firms in the technology and engineering sectors.” Source: company website · checked Sep 6, 2026
12	NLB Services	Indirect evidence	Alpharetta, GA, United StatesHQ checked Sep 6, 2026	5,001-10,000	1,958 contacts →
	“Founded in 2007, NLB Services is a global AI-led technology and business transformation organization that helps enterprises accelerate growth, enhance operational resilience, and…” Source: company website · checked Sep 6, 2026
13	Exadel	Strong evidence	Walnut Creek, CA, United StatesHQ checked Sep 6, 2026	1,001-5,000	1,874 contacts →
	“Exadel is a leading global software consulting and development company that looks beyond the code to maximize the technology-driven business impact our partners want to make.” Source: company website · checked Sep 6, 2026
14	Spectraforce	Partial evidence	Raleigh, NC, United StatesHQ checked Sep 6, 2026	1,001-5,000	1,845 contacts →
	“Founded in 2004, SPECTRAFORCE® is a global staffing and workforce solutions company that helps organizations build high-performing teams across healthcare, technology, financial…” Source: company website · checked Sep 6, 2026
15	Addison Group	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	1,001-5,000	1,840 contacts →
	“Addison Group provides comprehensive talent solutions and consulting services across diverse practice areas, including Non-Clinical Healthcare, Information Technology (IT), Human…” Source: company website · checked Sep 6, 2026
16	Labormax Staffing	Partial evidence	Kearney, MO, United StatesHQ checked Sep 6, 2026	n/a	1,755 contacts →
	“LaborMAX Staffing is your reliable provider of quality pre-screened contingent workers.” Source: company website · checked Sep 6, 2026
17	GPAC	Partial evidence	Sioux Falls, SD, United StatesHQ checked Sep 6, 2026	501-1,000	1,742 contacts →
	“gpac is the #1 digital recruitment platform, built on the belief that staffing is fundamentally a people business.” Source: company website · checked Sep 6, 2026
18	Nesco Resource	Indirect evidence	Mayfield Heights, OH, United StatesHQ checked Sep 6, 2026	501-1,000	1,599 contacts →
	“Companies need talent.” Source: company website · checked Sep 6, 2026
19	Infotree Global Solutions	Indirect evidence	Plymouth, MI, United StatesHQ checked Sep 6, 2026	1,001-5,000	1,545 contacts →
	“Infotree Global was founded in 2002 in a small office in Canton, MI, Infotree Global had a clear mission; To bring the world’s best talent together with the greatest companies…” Source: company website · checked Sep 6, 2026
20	Brooksource	Indirect evidence	Indianapolis, IN, United StatesHQ checked Sep 6, 2026	1,001-5,000	1,480 contacts →
	“At Brooksource, relationships are at the center of everything we do.” Source: company website · checked Sep 6, 2026
21	SELF	Indirect evidence	Houston, TX, United StatesHQ checked Sep 6, 2026	n/a	1,431 contacts →
	“We are a Full Service Solutions Company specializing in placements of professionals in Information Technology, Finance/Accounting, Energy (front, mid and back office)…” Source: company website · checked Sep 6, 2026
22	ASK Consulting	Indirect evidence	Alpharetta, GA, United StatesHQ checked Sep 6, 2026	501-1,000	1,296 contacts →
	“ASK Consulting is an award-winning technology and professional services recruiting firm servicing Fortune 500 organizations nationally.” Source: company website · checked Sep 6, 2026
23	Iconma	Partial evidence	Troy, MI, United StatesHQ checked Sep 6, 2026	1,001-5,000	1,289 contacts →
	“ICONMA: Your Partner in Global Staffing Solutions and Digital Transformation ICONMA is a globally recognized, Woman-Owned staff augmentation and technology consulting firm.” Source: company website · checked Sep 6, 2026
24	Coworx Staffing Services	Partial evidence	Morristown, NJ, United StatesHQ checked Sep 6, 2026	201-500	1,286 contacts →
	“CoWorx Staffing Services is one of the largest staffing firms in the U.S.” Source: company website · checked Sep 6, 2026
25	Snelling Staffing	Indirect evidence	Goose Creek, SC, United StatesHQ checked Sep 6, 2026	n/a	1,226 contacts →
	“Since 1951, Snelling has helped businesses grow and people find meaningful work.” Source: company website · checked Sep 6, 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 developer staffing. 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 developer staffing.
Partial evidence: Its own public description names part of software developer staffing, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name software developer staffing. 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 10,482 software developer staffing based in the United States

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Software developer staffing based in the United States at a glance

As of Sep 6, 2026

18.6%Verified-email coverage

26.0%Mobile-number coverage

31.3Average contacts per company

11-50Median size (employees)

4.3%Largest-city concentration · New York

Sep 6, 2026Page data refreshed

Companies by employee count

1-10

4,092

11-50

3,482

51-200

1,973

201-500

546

501-1,000

190

1,001-5,000

137

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

56,0960–30

4,15531–60

5861–90

3190–180

520180+

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 developer staffing, 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 developer staffing”. 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 developer staffing), 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 developer staffing, 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, 60,860 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 6, 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 developer staffing 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 developer staffing, 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 developer staffing are there based in the United States?

RevenueBase identified 10,482 software developer staffing 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 software developer staffing?

New York leads with 453 headquartered companies, followed by Houston (275) and Austin (230).

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 60,860 verified decision-maker contacts tracked across these 10,482 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 6, 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.