Company lists · Data refreshed September 2026

Top 25 Enterprise website developers based in Seattle, United States

Name: Enterprise website developers based in Seattle, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 30, 2026 114 companies tracked

RevenueBase identified 114 enterprise website developers headquartered in Seattle, United States as of September 2026 and tracks 524 professional contacts across them, including 121 with verified work emails. Across the United States, New York is the largest hub for this category (566 companies); Seattle has 114.

This list covers enterprise website developers 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 30, 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 30, 2026 86% judged on-target in blind review

114Companies

524Contacts tracked

121Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest enterprise website developers based in Seattle, United States

Ranked by team size

Top 25 of 114 enterprise website developers based in Seattle, United States, ranked by team size, largest first. Data refreshed Sep 30, 2026. RevenueBase Smart Search rates how each company's information relates to enterprise website developers: 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	Fast Track Team	Partial evidence	Seattle, WA, United StatesHQ checked Sep 30, 2026	51-200	28 contacts →
	Partial evidence “Fast Track creates cutting edge websites and web applications for businesses of all sizes faster and better than anyone else in the business.” Source: RevenueBase Database · checked Sep 30, 2026
2	Exit83 Consulting	Partial evidence	Seattle, WA, United StatesHQ checked Sep 30, 2026	51-200	25 contacts →
	Partial evidence “Since 2007, EXIT83 Consulting has been assisting companies with Website Development, Software Architecture, Mobile Application Development, Business Analysis and Fundraising…” Source: RevenueBase Database · checked Sep 30, 2026
3	Efelle Creative, Digital Marketing Agency	Partial evidence	Seattle, WA, United StatesHQ checked Sep 30, 2026	11-50	24 contacts →
	Partial evidence “efelle is an internationally recognized ecommerce & digital marketing agency based out of Seattle, Washington, delivering highly functional and engaging websites, applications…” Source: RevenueBase Database · checked Sep 30, 2026
4	Culture Foundry	Partial evidence	Seattle, WA, United StatesHQ checked Sep 30, 2026	11-50	16 contacts →
	Partial evidence “Websites and web applications.” Source: RevenueBase Database · checked Sep 30, 2026
5	Mentor Creative Group	Partial evidence	Seattle, WA, United StatesHQ checked Sep 30, 2026	1-10	13 contacts →
	Partial evidence “Founded in 2014 as a digital creative agency of one, Mentor now has an entire team of creatives and developers along with offices in Seattle, WA and Miami, FL.” Source: RevenueBase Database · checked Sep 30, 2026
6	Lunarbyte	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 30, 2026	1-10	12 contacts →
	Indirect evidence “Lunarbyte is a custom software and product development firm trusted by teams across industries to deliver dependable, scalable software solutions that drive real business results.” Source: RevenueBase Database · checked Sep 30, 2026
7	Foundry Interactive	Partial evidence	Seattle, WA, United StatesHQ checked Sep 30, 2026	11-50	11 contacts →
	Partial evidence “We build, market and optimize websites that connect customers and businesses in ways that are both meaningful and measurable.” Source: RevenueBase Database · checked Sep 30, 2026
8	Seamonster Studios	Partial evidence	Seattle, WA, United StatesHQ checked Sep 30, 2026	1-10	9 contacts →
	Partial evidence “Based in Seattle, WA, SeaMonster Studios is a lean and limber group of designers, developers, marketers, team players, technologists, and strategists.” Source: RevenueBase Database · checked Sep 30, 2026
9	Research & Design	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 30, 2026	11-50	9 contacts →
	Indirect evidence “Research & Design is a design and technology firm.” Source: RevenueBase Database · checked Sep 30, 2026
10	L4 Digital, A Globant Company	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 30, 2026	51-200	8 contacts →
	Indirect evidence “L4 Digital was founded in 2008 with the belief that great people build great products.” Source: RevenueBase Database · checked Sep 30, 2026
11	Helpful Human	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 30, 2026	11-50	7 contacts →
	Indirect evidence “Helpful Human strategically cooperates with our clients to design and build digital products that bring people together.” Source: RevenueBase Database · checked Sep 30, 2026
12	Blue Rooster INC	Partial evidence	Seattle, WA, United StatesHQ checked Sep 30, 2026	11-50	7 contacts →
	Partial evidence “Blue Rooster is a modern digital agency driving Strategy, UX Design and Technology for today's enterprise.” Source: RevenueBase Database · checked Sep 30, 2026
13	Montana Banana WEB Design & Development	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 30, 2026	1-10	6 contacts →
	Indirect evidence “Montana Banana is a Seattle-based web development company specializing in e-commerce integrations, user-friendly shopping experiences, web accessibility, and mobile apps.” Source: RevenueBase Database · checked Sep 30, 2026
14	Engine Interactive	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 30, 2026	11-50	6 contacts →
	Indirect evidence “As one of the most established interactive agencies on the West Coast, Engine has been creating high performance interactive media for 17 years.” Source: RevenueBase Database · checked Sep 30, 2026
15	Alpha Encoded	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 30, 2026	1-10	6 contacts →
	Indirect evidence “Based in the tech-centric city of Seattle, Alpha Encoded stands at the forefront of digital innovation.” Source: RevenueBase Database · checked Sep 30, 2026
16	Hard Refresh	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 30, 2026	1-10	5 contacts →
	Indirect evidence “Better for business.” Source: RevenueBase Database · checked Sep 30, 2026
17	Command Media LLC	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 30, 2026	1-10	5 contacts →
	Indirect evidence “Command Media LLC is a digital systems and engineering company focused on building high-performance WordPress platforms and scalable publishing infrastructure for modern…” Source: RevenueBase Database · checked Sep 30, 2026
18	Mahogany And Mango LLC	Partial evidence	Seattle, United StatesHQ checked Sep 30, 2026	1-10	3 contacts →
	Partial evidence “Helping small businesses and non-profit organizations build their online presence with custom-built websites & web applications.” Source: RevenueBase Database · checked Sep 30, 2026
19	NEW Theory	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 30, 2026	11-50	3 contacts →
	Indirect evidence “New Theory is a creative web agency that pushes design and technology for a shared, frictionless future.” Source: RevenueBase Database · checked Sep 30, 2026
20	Webkey	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 30, 2026	1-10	3 contacts →
	Indirect evidence “Taking care of the needs of companies small and large on the web has been our business for over two decades.” Source: RevenueBase Database · checked Sep 30, 2026
21	Green Light GO	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 30, 2026	1-10	3 contacts →
	Indirect evidence “Green Light Go is a full-service web development and consulting agency.” Source: RevenueBase Database · checked Sep 30, 2026
22	White Brick	Partial evidence	Seattle, United StatesHQ checked Sep 30, 2026	1-10	3 contacts →
	Partial evidence “Since 2008 I have been producing websites, marketing, and tech infrastructure for small businesses in the Seattle area.” Source: RevenueBase Database · checked Sep 30, 2026
23	Swiss IT Solutions	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 30, 2026	1-10	3 contacts →
	Indirect evidence “Swiss It Solutions is a technology company offering web design and IT consulting services.” Source: RevenueBase Database · checked Sep 30, 2026
24	WOW House Studio	Partial evidence	Seattle, WA, United StatesHQ checked Sep 30, 2026	1-10	2 contacts →
	Partial evidence “Your website should make people say “Wow”, not “Why?” If it’s slow, clunky, confusing, or just plain outdated, it’s costing you more than your patience.” Source: RevenueBase Database · checked Sep 30, 2026
25	Dark Matter Digital	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 30, 2026	1-10	2 contacts →
	Indirect evidence “Dark Matter is a product development services company focused on building, growing, and enhancing your business’s digital footprint.” Source: RevenueBase Database · checked Sep 30, 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: enterprise website developers. 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 enterprise website developers.
Partial evidence: Its own public description names part of enterprise website developers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name enterprise website developers. 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 114 enterprise website developers based in Seattle, United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 121 reachable decision-makers.

Free signup · no credit card

View the full list →

Enterprise website developers based in Seattle, United States at a glance

As of Sep 30, 2026

23.1%Verified-email coverage

4.6Average contacts per company

1-10Median size (employees)

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

501-1,000

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 114 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 enterprise website developers, 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 Seattle, United States whose own description of what they do matches “enterprise website developers”. 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 enterprise website developers), 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 enterprise website developers, 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 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, 121 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 30, 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.

Enterprise website developers 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 enterprise website developers, 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 enterprise website developers are there based in Seattle, United States?

RevenueBase identified 114 enterprise website developers 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?

Fast Track Team, headquartered in Seattle, tops this list with the largest team on record.

Which city in the United States has the most enterprise website developers?

New York leads the United States with 566 headquartered companies, followed by Los Angeles (266) and Austin (255). Seattle has 114.

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 121 verified decision-maker contacts tracked across these 114 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 30, 2026.

Ready to reach these companies? Verified emails and direct dials for all 114 enterprise website developers based in Seattle, United States. Start with a free account, no credit card.

Download this list →

Related lists

Enterprise website developers by geography

Browse the directory

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.