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Company lists · Data refreshed September 2026

Top 25 IT staffing agencies based in Seattle, United States

Compiled by the RevenueBase Data Team Data refreshed Sep 4, 2026 101 companies tracked

RevenueBase identified 101 IT staffing agencies headquartered in Seattle, United States as of September 2026 and tracks 2,157 professional contacts across them, including 388 with verified work emails. New York is the largest hub.

This list covers IT staffing agencies headquartered in Seattle, 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, how directly it supports the match, and when it was last checked. Data refreshed September 4, 2026.

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 HQ checked on every row Match evidence on every row Refreshed Sep 4, 2026 86% judged on-target in blind review
101Companies
2,157Contacts tracked
388Verified emails
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The 25 largest IT staffing agencies based in Seattle, United States

Ranked by team size
Top 25 of 101 IT staffing agencies based in Seattle, United States, ranked by team size, largest first. Data refreshed Sep 4, 2026. Evidence rates how directly each company's own description names IT staffing agencies: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#CompanyHeadquartersEmployeesContacts
1
H10 CapitalIndirect evidence
Seattle, WA, United StatesHQ checked Sep 4, 2026201-50082

“H10 is a Consulting and Project Resources firm headquartered in Seattle, WA.”

Source: company website · checked Sep 4, 2026
2
Rylem StaffingPartial evidence
Seattle, WA, United StatesHQ checked Sep 4, 202651-20075

“Since 2007, Rylem Staffing has partnered with organizations to solve one of the most important challenges in business: finding the right people.”

Source: company website · checked Sep 4, 2026
3
Prime Team PartnersIndirect evidence
Seattle, WA, United StatesHQ checked Sep 4, 202651-20065

“At Prime Team Partners, we leverage our deep industry experience and proprietary AI-powered portal to connect skilled technology professionals with top employers across the United…”

Source: company website · checked Sep 4, 2026
4
SiimplIndirect evidence
Seattle, WA, United StatesHQ checked Sep 4, 202611-5035

“At Siimpl, we are connecting tenacious and humble talent with the right teams all over the world.”

Source: company website · checked Sep 4, 2026
5
FlawlessIndirect evidence
Seattle, WA, United StatesHQ checked Sep 4, 202651-20031

“Seattle-based, recruiting nationally and represented in 30 states.”

Source: company website · checked Sep 4, 2026
6
Molly Brown TempsIndirect evidence
Seattle, WA, United StatesHQ checked Sep 4, 2026n/a31

“Offering temporary, temp-to-hire, and direct hire services for candidates and companies in the Greater Seattle area.”

Source: company website · checked Sep 4, 2026
7
Redcley PartnersPartial evidence
Seattle, United StatesHQ checked Sep 4, 202651-20029

“We partner with our Clients to support them across their business with staffing and consulting services, full-time employees, and project based solutions.”

Source: company website · checked Sep 4, 2026
8
South GeeksIndirect evidence
Seattle, WA, United StatesHQ checked Sep 4, 202651-20023

“Our mission is to power the evolution of leading companies in Fintech and Life Sciences by curating elite engineers from Latin America.”

Source: company website · checked Sep 4, 2026
9
Ontarget Staffing INCIndirect evidence
Seattle, WA, United StatesHQ checked Sep 4, 20261-1022
Source: company website · checked Sep 4, 2026
10
Myriad Consulting, INCIndirect evidence
Seattle, WA, United StatesHQ checked Sep 4, 202611-5018

“Myriad Consulting is a leader in providing global workforce solutions.”

Source: company website · checked Sep 4, 2026
11
Concordis LLCPartial evidence
Seattle, WA, United StatesHQ checked Sep 4, 20261-1016

“The Leader in Transparent Consulting, Managed Services, and Staffing for Your Business and Technology Needs Concordis is a business and technology consulting and staffing company…”

Source: company website · checked Sep 4, 2026
12
Xumerz INCIndirect evidence
Seattle, WA, United StatesHQ checked Sep 4, 202611-5014

“At Xumerz, our success as a business is down to the quality of our people.”

Source: company website · checked Sep 4, 2026
13
Quardev, INCIndirect evidence
Seattle, WA, United StatesHQ checked Sep 4, 202611-5014

“At Quardev, we're in the business of fostering relationships.”

Source: company website · checked Sep 4, 2026
14
Express Employment Professionals Seattle, WAIndirect evidence
Seattle, WA, United StatesHQ checked Sep 4, 20261-1012

“Welcome to Express Seattle!”

Source: company website · checked Sep 4, 2026
15
InventsoftPartial evidence
Seattle, WA, United StatesHQ checked Sep 4, 202651-20011

“InventSoft is a Technology Solutions and Consulting services firm that specializes in Product Development, Consulting Services, and Staffing Services.”

Source: company website · checked Sep 4, 2026
16
Eworld SolutionsIndirect evidence
Seattle, United StatesHQ checked Sep 4, 202611-508

“Eworld Solutions specializes in providing companies with expert engineers for design and verification.”

Source: company website · checked Sep 4, 2026
17
RecruytIndirect evidence
Seattle, WA, United StatesHQ checked Sep 4, 20261-108

“We find niche talent for some of the most innovative, and mission driven companies in the world.”

Source: company website · checked Sep 4, 2026
18
Devselect, LLCPartial evidence
Seattle, WA, United StatesHQ checked Sep 4, 202611-507

“DevSelect is a Managerial and Technical consultancy with a long history of process-driven consulting and staffing.”

Source: company website · checked Sep 4, 2026
19
Gols INCIndirect evidence
Seattle, WA, United StatesHQ checked Sep 4, 202611-507
Source: company website · checked Sep 4, 2026
20
Domer Recruiting GroupIndirect evidence
Seattle, WA, United StatesHQ checked Sep 4, 20261-107

“Every day at Domer Recruiting Group, we help our clients locate and place Impact Players, that 20% of the available workforce that make 80% of the impact on your business.”

Source: company website · checked Sep 4, 2026
21
Upper OctavePartial evidence
Seattle, WA, United StatesHQ checked Sep 4, 202611-506

“Upper Octave is a blockchain & web developer staffing firm.”

Source: company website · checked Sep 4, 2026
22
Emerald TalentIndirect evidence
Seattle, WA, United StatesHQ checked Sep 4, 202611-505

“Emerald Talent is a Tech Recruiting firm specializing in On-Demand, RPO (recruitment process outsourcing), and customized recruiting services.”

Source: company website · checked Sep 4, 2026
23
Dynexus Recruiting & StaffingPartial evidence
Seattle, WA, United StatesHQ checked Sep 4, 20261-105

“DyNexus Recruiting & Staffing connects top ERP talent with companies across the U.S.”

Source: company website · checked Sep 4, 2026
24
Lincoln BAYPartial evidence
Seattle, WA, United StatesHQ checked Sep 4, 202651-2005

“Lincoln Bay is a Seattle based professional staffing company that specializes in contract and permanent placement of Informational Technology Professionals.”

Source: company website · checked Sep 4, 2026
25
West500 PartnersIndirect evidence
Seattle, WA, United StatesHQ checked Sep 4, 20261-104

“West500 Partners has been serving emerging startups to Enterprise companies since 2007, delivering consistent results for clients throughout the United States.”

Source: company website · checked Sep 4, 2026

Showing 25 of 101 IT staffing agencies based in Seattle, United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 388 reachable decision-makers.

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IT staffing agencies based in Seattle, United States at a glance

As of Sep 4, 2026
1-10Median size (employees)
New YorkLargest hub · 774 HQs
Contacts with mobile numbers
Sep 4, 2026Data refreshed

Companies by employee count

1-10
58
11-50
23
51-200
14
201-500
3
501-1,000
1
1,001-5,000
2

Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Seattle, over 101 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 IT staffing agencies, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in Seattle, United States whose own description of what they do matches “IT staffing agencies”. Matching reads each company's description, not its industry code or its name.
What we exclude
Companies whose own description does not clearly place them among IT staffing agencies, and records with no verified work email. Companies headquartered outside Seattle 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 an evidence 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, 388 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 4, 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.

IT staffing agencies by metro in the United States

Frequently asked

How many IT staffing agencies are there based in Seattle, United States?

RevenueBase identified 101 IT staffing agencies headquartered in Seattle, 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?

H10 Capital, headquartered in Seattle, tops this list with the largest team on record.

Which city has the most IT staffing agencies?

New York leads with 774 headquartered companies, followed by Houston (547) and Dallas (411).

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 388 verified decision-maker contacts tracked across these 101 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 4, 2026.

Ready to reach these companies? Verified emails and direct dials for all 101 IT staffing agencies based in Seattle, United States. Start with a free account, no credit card.

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Browse: Companies home · IT staffing agencies in United States · All United States lists · All IT staffing agencies lists · New lists

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.

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