Company lists · Data refreshed September 2026

Top 25 IT consulting service providers based in Bellevue, United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 88 companies tracked

RevenueBase identified 88 IT consulting service providers headquartered in Bellevue, United States as of September 2026 and tracks 5,842 professional contacts across them, including 793 with verified work emails. Across the United States, New York is the largest hub for this category (932 companies); Bellevue has 88.

This list covers IT consulting service providers headquartered in Bellevue, 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 27, 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 27, 2026 86% judged on-target in blind review

88Companies

5,842Contacts tracked

793Verified emails

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The 25 largest IT consulting service providers based in Bellevue, United States

Ranked by team size

Top 25 of 88 IT consulting service providers based in Bellevue, United States, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to IT consulting service providers: 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	Beyondsoft	Strong evidence	Bellevue, WA, United StatesHQ checked Sep 27, 2026	501-1,000	2,359 contacts →
	Strong evidence “Beyondsoft Consulting is a leading global mid-sized business IT and consulting company that combines modern technologies and proven methodologies to tailor solutions that move…” Source: RevenueBase Database · checked Sep 27, 2026
2	AIM Consulting Group	Partial evidence	Bellevue, WA, United StatesHQ checked Sep 27, 2026	501-1,000	398 contacts →
	Partial evidence “AIM Consulting, an Addison Group company, is an award-winning industry leader in technology consulting and solutions delivery.” Source: RevenueBase Database · checked Sep 27, 2026
3	Inviso	Partial evidence	Bellevue, WA, United StatesHQ checked Sep 27, 2026	201-500	239 contacts →
	Partial evidence “Inviso is a growing technology consulting firm that offers a wide range of business services for small to enterprise organizations across industries.” Source: RevenueBase Database · checked Sep 27, 2026
4	Software Engineering Services	Strong evidence	Bellevue, NE, United StatesHQ checked Sep 27, 2026	51-200	234 contacts →
	Strong evidence “SES is a cutting edge provider of IT consulting services.” Source: RevenueBase Database · checked Sep 27, 2026
5	CSI Interfusion	Partial evidence	Bellevue, WA, United StatesHQ checked Sep 27, 2026	51-200	219 contacts →
	Partial evidence “CSI Interfusion is a global IT firm specializing Microsoft technologies.” Source: RevenueBase Database · checked Sep 27, 2026
6	Congruent Software INC	Indirect evidence	Bellevue, WA, United StatesHQ checked Sep 27, 2026	201-500	210 contacts →
	Indirect evidence “Founded in 1994, Congruent Software is a leading software development outsourcing company specialized in custom applications development, enterprise software, cloud computing, and…” Source: RevenueBase Database · checked Sep 27, 2026
7	Redcloud Consulting	Partial evidence	Bellevue, WA, United StatesHQ checked Sep 27, 2026	201-500	188 contacts →
	Partial evidence “RedCloud is a business and technology consulting firm providing local companies with expert-level support for over two decades.” Source: RevenueBase Database · checked Sep 27, 2026
8	Prowess Consulting	Strong evidence	Bellevue, WA, United StatesHQ checked Sep 27, 2026	51-200	134 contacts →
	Strong evidence “Prowess Consulting is a Seattle-based technology services firm specializing in Agentic AI, Data and AI Consulting, IT and Cloud Infrastructure, Software Development and Testing…” Source: RevenueBase Database · checked Sep 27, 2026
9	Biblioso	Strong evidence	Bellevue, WA, United StatesHQ checked Sep 27, 2026	201-500	102 contacts →
	Strong evidence “We started more than a decade ago focusing on supporting companies in the Pacific Northwest with IT consulting and documentation projects.” Source: RevenueBase Database · checked Sep 27, 2026
10	General Microsystems Inc. GMI	Indirect evidence	Bellevue, WA, United StatesHQ checked Sep 27, 2026	11-50	89 contacts →
	Indirect evidence “GMI Mission Statement: Empowering our customers through creative technology solutions General Microsystems Inc.” Source: RevenueBase Database · checked Sep 27, 2026
11	Terawe Corporation	Indirect evidence	Bellevue, WA, United StatesHQ checked Sep 27, 2026	11-50	88 contacts →
	Indirect evidence “Terawe is a software technology company that provides world-class sustainable solutions and services for customers: • we have extensive experience in Cloud-based solutions • we…” Source: RevenueBase Database · checked Sep 27, 2026
12	Raining Virtue INC	Strong evidence	Bellevue, WA, United StatesHQ checked Sep 27, 2026	51-200	67 contacts →
	Strong evidence “The world doesn’t need another IT consulting firm.” Source: RevenueBase Database · checked Sep 27, 2026
13	Inabia Solutions And Consulting, INC	Indirect evidence	Bellevue, WA, United StatesHQ checked Sep 27, 2026	51-200	62 contacts →
	Indirect evidence “WHO Founded in 2006 and headquartered in Redmond, WA.” Source: RevenueBase Database · checked Sep 27, 2026
14	Hi-Tech Talents	Strong evidence	Bellevue, WA, United StatesHQ checked Sep 27, 2026	201-500	56 contacts →
	Strong evidence “We have been working in the IT consulting business for more than 10 years, and this branch specifically serves the technical consulting needs in Seattle area.” Source: RevenueBase Database · checked Sep 27, 2026
15	Knackhook	Indirect evidence	Bellevue, WA, United StatesHQ checked Sep 27, 2026	51-200	54 contacts →
	Indirect evidence “DIGITAL MASTERY REDEFINED.” Source: RevenueBase Database · checked Sep 27, 2026
16	Troy Consulting LLC	Partial evidence	Bellevue, WA, United StatesHQ checked Sep 27, 2026	11-50	39 contacts →
	Partial evidence “Troy Consulting delivers high-value business management and technical professional services to our clients, ranging from Fortune 50 to Small Medium Business organizations.” Source: RevenueBase Database · checked Sep 27, 2026
17	The AES Group	Partial evidence	Bellevue, WA, United StatesHQ checked Sep 27, 2026	51-200	34 contacts →
	Partial evidence “At The AES Group, we believe technology is most powerful when it brings people, ideas and opportunity together.” Source: RevenueBase Database · checked Sep 27, 2026
18	Adisys Corporation	Strong evidence	Bellevue, WA, United StatesHQ checked Sep 27, 2026	51-200	34 contacts →
	Strong evidence “Adisys is a comprehensive management consulting organization that provides IT Product and Software development, vertical solutions, and outsourcing services.” Source: RevenueBase Database · checked Sep 27, 2026
19	WMI Worldwide	Partial evidence	Bellevue, WA, United StatesHQ checked Sep 27, 2026	11-50	30 contacts →
	Partial evidence “WMI Worldwide is a technology and operations consulting firm, specializing in custom software and business process management solutions.” Source: RevenueBase Database · checked Sep 27, 2026
20	Mentis Systems	Partial evidence	Bellevue, WA, United StatesHQ checked Sep 27, 2026	1,001-5,000	30 contacts →
	Partial evidence “Mentis Systems is an US based global IT Services Company with focus on Clients’ Technology & Business Objectives.” Source: RevenueBase Database · checked Sep 27, 2026
21	Amplify Consulting Partners NOW Sparq	Partial evidence	Bellevue, WA, United StatesHQ checked Sep 27, 2026	51-200	29 contacts →
	Partial evidence “Amplify Consulting Partners is a data-first consulting company trusted by Fortune 500 businesses to deliver high-impact professional services across the technology ecosystem-from…” Source: RevenueBase Database · checked Sep 27, 2026
22	Virtuosity Consulting Group	Partial evidence	Bellevue, WA, United StatesHQ checked Sep 27, 2026	51-200	26 contacts →
	Partial evidence “Virtuosity Consulting is a technology services company specializing in the execution, automation and management of critical business and technology initiatives.” Source: RevenueBase Database · checked Sep 27, 2026
23	Axelerate	Partial evidence	Bellevue, WA, United StatesHQ checked Sep 27, 2026	51-200	17 contacts →
	Partial evidence “Axelerate is a Bellevue WA based management and technology consulting company that delivers comprehensive technology services and solutions to help clients achieve measurable…” Source: RevenueBase Database · checked Sep 27, 2026
24	Hard Drives Northwest	Partial evidence	Bellevue, WA, United StatesHQ checked Sep 27, 2026	11-50	16 contacts →
	Partial evidence “Hard Drives Northwest has been serving Washington State technology needs and providing IT Solutions for over 20 years.” Source: RevenueBase Database · checked Sep 27, 2026
25	Revivecloud LLC	Strong evidence	Bellevue, WA, United StatesHQ checked Sep 27, 2026	11-50	15 contacts →
	Strong evidence “ReviveCloud LLC - formerly Kalotas is a Tier 1 Microsoft Partner and one of the leading IT consulting firm in Seattle, WA.” Source: RevenueBase Database · checked Sep 27, 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: IT consulting service providers. 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 IT consulting service providers.
Partial evidence: Its own public description names part of IT consulting service providers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name IT consulting service providers. 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 88 IT consulting service providers based in Bellevue, United States

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IT consulting service providers based in Bellevue, United States at a glance

As of Sep 27, 2026

13.6%Verified-email coverage

66.4Average contacts per company

11-50Median size (employees)

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured across the whole United States list rather than for Bellevue, so it is reported there. Company counts and contact totals on this page are exact for Bellevue, over 88 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 service providers, 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 Bellevue, United States whose own description of what they do matches “IT consulting service providers”. 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 IT consulting service providers), 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 IT consulting service providers, and records with no verified work email. Companies headquartered outside Bellevue 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, 793 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 27, 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 service providers by metro in the United States

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 IT consulting service providers, 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 IT consulting service providers are there based in Bellevue, United States?

RevenueBase identified 88 IT consulting service providers headquartered in Bellevue, 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?

Beyondsoft, headquartered in Bellevue, tops this list with the largest team on record.

Which city in the United States has the most IT consulting service providers?

New York leads the United States with 932 headquartered companies, followed by Houston (636) and Dallas (488). Bellevue has 88.

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 793 verified decision-maker contacts tracked across these 88 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 27, 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.