Company lists · Data refreshed September 2026

Top 25 IT consulting services based in Seattle, United States

Name: IT consulting services based in Seattle, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 4, 2026 215 companies tracked

RevenueBase identified 215 IT consulting services headquartered in Seattle, United States as of September 2026 and tracks 2,263 professional contacts across them, including 644 with verified work emails. New York is the largest hub.

This list covers IT consulting services 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

215Companies

2,263Contacts tracked

644Verified emails

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The 25 largest IT consulting services based in Seattle, United States

Ranked by team size

Top 25 of 215 IT consulting services 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 consulting services: 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.
#	Company	Headquarters	Employees	Contacts
1	RelantoPartial evidence	Seattle, WA, United StatesHQ checked Sep 4, 2026	501-1,000	599
	“Relanto is a global advisory, consulting, and technology services partner, empowering customers to accelerate innovation by harnessing the power of Data and AI, Automation…” Source: company website · checked Sep 4, 2026
2	Wimmer SolutionsIndirect evidence	Seattle, WA, United StatesHQ checked Sep 4, 2026	501-1,000	260
	“We help you to see the full picture, bringing our experts together with you to co-develop approaches and operationalize plans across the dimension of strategy, people, process…” Source: company website · checked Sep 4, 2026
3	2nd WatchIndirect evidence	Seattle, WA, United StatesHQ checked Sep 4, 2026	201-500	70
	“2nd Watch is now Ollion.” Source: company website · checked Sep 4, 2026
4	Cogentsoft SystemsPartial evidence	Seattle, WA, United StatesHQ checked Sep 4, 2026	51-200	59
	“CogentSoft, we provide consulting, technology and business process outsourcing solutions to organizations.” Source: company website · checked Sep 4, 2026
5	EnvorsoIndirect evidence	Seattle, WA, United StatesHQ checked Sep 4, 2026	51-200	53
	“At Envorso, we specialize in guiding businesses through the complexities of modern engineering, software, and digital transformation.” Source: company website · checked Sep 4, 2026
6	Kuelap, INCIndirect evidence	Seattle, WA, United StatesHQ checked Sep 4, 2026	51-200	41
	Source: company website · checked Sep 4, 2026
7	Greene ISPartial evidence	Seattle, WA, United StatesHQ checked Sep 4, 2026	11-50	35
	“Full service Information Technology Consulting and Outsourcing for Your Business Greene IS specializes in providing comprehensive computer networking solutions to the small and…” Source: company website · checked Sep 4, 2026
8	TurnpointStrong evidence	Seattle, WA, United StatesHQ checked Sep 4, 2026	11-50	29
	“Our company is a boutique IT consulting firm providing high-level IT consulting, outsourced IT management, and help desk services to small- and medium-sized businesses in the…” Source: company website · checked Sep 4, 2026
9	Exit83 ConsultingPartial evidence	Seattle, WA, United StatesHQ checked Sep 4, 2026	51-200	25
	“Since 2007, EXIT83 Consulting has been assisting companies with Website Development, Software Architecture, Mobile Application Development, Business Analysis and Fundraising…” Source: company website · checked Sep 4, 2026
10	Dynamic ComputingIndirect evidence	Seattle, WA, United StatesHQ checked Sep 4, 2026	11-50	24
	“Dynamic Computing helps companies and organizations in Seattle and across the Puget Sound region achieve their goals through technology.” Source: company website · checked Sep 4, 2026
11	Sentry ComputingPartial evidence	Seattle, WA, United StatesHQ checked Sep 4, 2026	11-50	22
	“Sentry Computing builds smart IT solutions that keep your day-to-day operations running smoothly.” Source: company website · checked Sep 4, 2026
12	Fusion TechnologiesStrong evidence	Seattle, WA, United StatesHQ checked Sep 4, 2026	11-50	22
	“Fusion Technologies is a growing IT consulting, managed service provider.” Source: company website · checked Sep 4, 2026
13	Swat SystemsIndirect evidence	Seattle, WA, United StatesHQ checked Sep 4, 2026	11-50	20
	“SWAT Systems is now Convergence Networks!” Source: company website · checked Sep 4, 2026
14	Pivotal ConsultingPartial evidence	Seattle, WA, United StatesHQ checked Sep 4, 2026	11-50	20
	“Pivotal Consulting is a technology management consulting firm specializing in delivering strategic and tactical project solutions.” Source: company website · checked Sep 4, 2026
15	Broadpoint GroupIndirect evidence	Seattle, United StatesHQ checked Sep 4, 2026	51-200	19
	“BroadPoint Group provides the services to grow your team, augment your staff and guide your company’s technical goals.” Source: company website · checked Sep 4, 2026
16	Tokusaku ConsultingPartial evidence	Seattle, WA, United StatesHQ checked Sep 4, 2026	11-50	17
	“tō·kü·sȯ·kü/ A well thought plan TokuSaku Consulting is a management and technology consulting company dedicated to driving best-of-class solutions with innovative approaches.” Source: company website · checked Sep 4, 2026
17	Concordis LLCPartial evidence	Seattle, WA, United StatesHQ checked Sep 4, 2026	1-10	16
	“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
18	InterplayPartial evidence	Seattle, WA, United StatesHQ checked Sep 4, 2026	1-10	15
	“Interplay IT is a trusted, Seattle-based IT partner specializing in Architecture, Engineering, Construction, and Mission-Driven Nonprofits.” Source: company website · checked Sep 4, 2026
19	Camber Consulting LLCStrong evidence	Seattle, WA, United StatesHQ checked Sep 4, 2026	11-50	14
	“Camber Consulting LLC was founded in 2011 with the goal of providing specialized finance, accounting, and IT project management services to clients in the Pacific Northwest and…” Source: company website · checked Sep 4, 2026
20	Markgraf ConsultingPartial evidence	Seattle, WA, United StatesHQ checked Sep 4, 2026	11-50	12
	“Markgraf Consulting is a premier technology consulting firm specializing in SAP security, cloud solutions, and system architecture.” Source: company website · checked Sep 4, 2026
21	Real Impact Technology ConsultingPartial evidence	Seattle, WA, United StatesHQ checked Sep 4, 2026	11-50	11
	“Real Impact is an agile, highly experienced technology consulting firm serving small, mid-market, and enterprise organizations, specializing in working with Professional Services…” Source: company website · checked Sep 4, 2026
22	InventsoftPartial evidence	Seattle, WA, United StatesHQ checked Sep 4, 2026	51-200	11
	“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
23	AVIEPartial evidence	Seattle, WA, United StatesHQ checked Sep 4, 2026	11-50	10
	“AVIE provides business and strategy consulting services to the top technology firms in the greater Seattle area.” Source: company website · checked Sep 4, 2026
24	Inuix LLCStrong evidence	Seattle, WA, United StatesHQ checked Sep 4, 2026	51-200	9
	“IT consulting company focused on CRM and ERP space, We provide consulting services as well as provide qualified CRM & ERP resources to our customer.” Source: company website · checked Sep 4, 2026
25	Dupont SolutionsPartial evidence	Seattle, WA, United StatesHQ checked Sep 4, 2026	1-10	9
	“DuPont Solutions \| Trusted, Vendor-Neutral Partner for IT Leaders Empowering IT Directors to drive digital transformation with precision, speed, and strategic alignment.” Source: company website · checked Sep 4, 2026

Showing 25 of 215 IT consulting services based in Seattle, United States

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IT consulting services based in Seattle, United States at a glance

As of Sep 4, 2026

1-10Median size (employees)

New YorkLargest hub · 976 HQs

Contacts with mobile numbers

Sep 4, 2026Data refreshed

Companies by employee count

1-10

130

11-50

51-200

201-500

501-1,000

5,001-10,000

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 215 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 consulting services, 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 consulting services”. 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 consulting services, 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, 644 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 consulting services by metro in the United States

Frequently asked

How many IT consulting services are there based in Seattle, United States?

RevenueBase identified 215 IT consulting services 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?

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

Which city has the most IT consulting services?

New York leads with 976 headquartered companies, followed by Houston (633) and Atlanta (521).

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 644 verified decision-maker contacts tracked across these 215 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.

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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 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.