Company lists · Data refreshed September 2026

Top 24 Software engineering consulting firms based in Seattle, United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 14, 2026 60 companies tracked

RevenueBase identified 60 company matches for software engineering consulting firms associated with Seattle, United States as of September 2026 and tracks 515 professional contacts across them, including 189 with verified work emails. Across the United States, New York is the largest hub for this category (173 companies); Seattle has 60.

This list covers company matches for software engineering consulting firms associated with Seattle, United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 14, 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 RevenueBase SmartSearch · Exact Recorded Sep 14, 2026 How this list was built

60Companies

515Contacts tracked

189Verified emails

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The 24 largest software engineering consulting firms based in Seattle, United States

Ranked by team size

Top 24 of 60 company matches for software engineering consulting firms based in Seattle, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 14, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Harris Group	Exact match	Seattle, WA, United StatesHQ recorded Sep 14, 2026	51-200	178 contacts →
	Exact match “Harris Group is a multidiscipline engineering consulting firm with offices located throughout the United States.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
2	Janea Systems	Exact match	Seattle, WA, United StatesHQ recorded Sep 14, 2026	51-200	60 contacts →
	Exact match “For over two decades, Janea Systems has provided high impact software development services to Fortune 500 companies.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
3	Envorso	Exact match	Seattle, WA, United StatesHQ recorded Sep 14, 2026	51-200	51 contacts →
	Exact match “At Envorso, we specialize in guiding businesses through the complexities of modern engineering, software, and digital transformation.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
4	Exit83 Consulting	Exact match	Seattle, WA, United StatesHQ recorded Sep 14, 2026	51-200	25 contacts →
	Exact match “Since 2007, EXIT83 Consulting has been assisting companies with Website Development, Software Architecture, Mobile Application Development, Business Analysis and Fundraising…” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
5	Itrellis, LLC	Exact match	Seattle, WA, United StatesHQ recorded Sep 14, 2026	11-50	13 contacts →
	Exact match “iTrellis is a Custom Software and Systems Integration consultancy located in Seattle, WA.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
6	Apsis Labs	Exact match	Seattle, WA, United StatesHQ recorded Sep 14, 2026	1-10	10 contacts →
	Exact match “At Apsis Labs, we help product-driven teams bring high-quality web and mobile applications to life-quickly, cleanly, and with purpose.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
7	Eworld Solutions	Exact match	Seattle, United StatesHQ recorded Sep 14, 2026	11-50	8 contacts →
	Exact match “Eworld Solutions specializes in providing companies with expert engineers for design and verification.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
8	Devselect, LLC	Exact match	Seattle, WA, United StatesHQ recorded Sep 14, 2026	11-50	8 contacts →
	Exact match “DevSelect is a Managerial and Technical consultancy with a long history of process-driven consulting and staffing.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
9	Fostec	Exact match	Seattle, WA, United StatesHQ recorded Sep 14, 2026	1-10	8 contacts →
	Exact match “Founded in 1998, Fostec is a client-focused Information Technology consulting firm that designs solutions and provides technical expertise to small and mid-sized businesses…” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
10	Pythonwise INC	Exact match	Seattle, WA, United StatesHQ recorded Sep 14, 2026	11-50	6 contacts →
	Exact match “Pythonwise Inc is leading provider of Information Technology consulting and business process services.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
11	Enetics Networks	Exact match	Seattle, WA, United StatesHQ recorded Sep 14, 2026	1-10	4 contacts →
	Exact match “Enetics Networks was founded in 1998 to provide smart, cost-effective technology solutions for businesses throughout Washington state.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
12	The Software Factory	Exact match	Seattle, WA, United StatesHQ recorded Sep 14, 2026	1-10	4 contacts →
	Exact match “We offer expertise in establishing architectural best practices and implementing quality software for effective and sustainable solutions.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
13	Instrumental Group	Exact match	Seattle, WA, United StatesHQ recorded Sep 14, 2026	1-10	3 contacts →
	Exact match “We are your software team for hire: four industry veterans with decades of cross-platform experience who have worked together for over a decade to launch products, run agencies…” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
14	Empowr Software Engineering	Exact match	Seattle, United StatesHQ recorded Sep 14, 2026	1-10	2 contacts →
	Exact match “Empowr was founded with the dream of empowering people and ideas.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
15	Webonyx	Exact match	Seattle, WA, United StatesHQ recorded Sep 14, 2026	11-50	2 contacts →
	Exact match “WebOnyx is a software development company that specializes in building custom software.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
16	dev.co	Exact match	Seattle, WA, United StatesHQ recorded Sep 14, 2026	11-50	2 contacts →
	Exact match “Established in 2008 as a advertising & financial software consulting firm, DEV.co brings brings over 12 years of successful leadership to custom software development projects…” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
17	Spark Optimization Consulting	Exact match	Seattle, WA, United StatesHQ recorded Sep 14, 2026	1-10	2 contacts →
	Exact match “The true differentiator of any organization in today's world is it's ability to adapt delivery methods to keep pace with their customer's needs.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
18	FAC Systems INC	Exact match	Seattle, WA, United StatesHQ recorded Sep 14, 2026	1-10	1 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
19	Strategyflow LLC	Exact match	Seattle, United StatesHQ recorded Sep 14, 2026	1-10	1 contacts →
	Exact match “StrategyFlow LLC is located in Seattle, Washington, delivering strategic technology leadership services and exploring new technology ventures.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
20	TA Certain Consulting	Exact match	Seattle, WA, United StatesHQ recorded Sep 14, 2026	1-10	1 contacts →
	Exact match “I spent over 20 years with Amazon and AWS, building critical systems and leading teams.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
21	Tetravela	Exact match	Seattle, WA, United StatesHQ recorded Sep 14, 2026	1-10	1 contacts →
	Exact match “Tetravela is a turnkey product design studio and engineering services consulting firm.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
22	Inner Product LLC	Exact match	Seattle, WA, United StatesHQ recorded Sep 14, 2026	1-10	1 contacts →
	Exact match “Inner Product builds great software for the enterprise.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
23	Null Unit	Exact match	Seattle, WA, United StatesHQ recorded Sep 14, 2026	1-10	1 contacts →
	Exact match “We take a lean, cost-effective approach to helping small-medium businesses (and the occasional enterprise) ship software that addresses acute needs and delivers immediate value.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
24	Business Learning Incorporated	Exact match	Seattle, WA, United StatesHQ recorded Sep 14, 2026	1-10	1 contacts →
	Exact match “We are Business Learning Incorporated, a provider of systems and software engineering design, development and management services.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “software engineering consulting firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 24 of 60 software engineering consulting firms based in Seattle, United States

See the full list, filter by size, metro and specialty, and access 189 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Software engineering consulting firms based in Seattle, United States at a glance

As of Sep 14, 2026

36.7%Verified-email coverage

8.6Average contacts per company

1-10Median size (employees)

Sep 14, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

5,001-10,000

Email recency for this list is measured across the whole United States list rather than for Seattle, so it is reported there. Company counts and contact totals on this page are exact for Seattle, over 60 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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: Company records associated with Seattle, United States whose business descriptions match “software engineering consulting firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 189 professional contacts with verified work emails across the full matched dataset. 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 14, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Software engineering consulting firms by metro in the United States

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “software engineering consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many software engineering consulting firms are there based in Seattle, United States?

RevenueBase identified 60 company matches for software engineering consulting firms associated with Seattle, United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Harris Group tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United States has the most software engineering consulting firms?

New York leads the United States with 173 company records, followed by Austin (117) and Houston (90). Seattle has 60.

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 189 professional contacts with verified work emails tracked across these 60 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 14, 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.