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Top 39 IT services companies in Seattle

Tamtam tracks 39 IT services companies headquartered in Seattle. This list ranks all of them by number of employees on LinkedIn, led by Amazon Web Services (AWS), Avanade and Slalom. Their median headcount is 37. Half of them were founded in 2009 or later.

馃嚭馃嚫 Seattle39 companiesUpdated Nov 2, 2026
#CompanyIndustryHeadquarters EmployeesFounded
1
Amazon Web Services (AWS)amazon.com

A global cloud computing provider offering scalable, reliable, and cost-effective infrastructure services to businesses worldwide, eliminating the need for capital infrastructure expenses

IT Services and IT Consulting 馃嚭馃嚫 Seattle 147,090 2006
2
Avanadeavanade.com

Innovative provider of digital, cloud, and advisory services within the Microsoft ecosystem, focused on making a human impact, solving challenges, and promoting sustainability and diversity

IT Services and IT Consulting 馃嚭馃嚫 Seattle 50,000 2000
3
Slalomslalom.com

Consulting firm delivering strategy, technology, and data-driven solutions to improve operations, customer experiences, and sustainable growth globally.

Business Consulting and Services 馃嚭馃嚫 Seattle 10,268 2001
4
Aegisaegisgrp.com

Aegis offers custom engineering and technology solutions to various clients, focusing on multi-disciplined approaches, hardware and software testing, and GIS-based mobile solutions

IT Services and IT Consulting 馃嚭馃嚫 Seattle 3,156 1995
5
Slalom Buildslalombuild.com

This company provides end-to-end solutions for clients in strategy, technology, product creation, and workforce modernization, building modern technology products with courage and innovation

IT Services and IT Consulting 馃嚭馃嚫 Seattle 1,577 n/a
6
Leapfrog Technology, Inc.lftechnology.com

Specializing in developing cutting-edge digital experiences for businesses, we combine startup speed with enterprise quality to drive innovation and success

Software Development 馃嚭馃嚫 Seattle 552 2010
7
Relantorelanto.ai

Global services partner for innovation, specializing in Data, AI, Automation, Planning, and Cloud Solutions, transforming possibilities into reality with technology expertise

Business Consulting and Services 馃嚭馃嚫 Seattle 517 2021
8
Factspanfactspan.com

Data and AI company offering data engineering and science solutions to global enterprises, specializing in identifying patterns, trends, and delivering business outcomes

Business Consulting and Services 馃嚭馃嚫 Seattle 316 2012
9
BlackStone eITblackstoneeit.com

Transformative enterprise solutions and intelligent design company supplying innovative automation solutions to reshape technology interactions and drive better business outcomes

IT Services and IT Consulting 馃嚭馃嚫 Seattle 309 2014
10
Techno Brain GBStechnobraingroup.com

A leading BPO/ITES provider in Africa offering tailored, affordable, and quality solutions in call center management, back-office services, and digital media services globally

IT Services and IT Consulting 馃嚭馃嚫 Seattle 284 2006
11
Utilicastutilicast.com

Utilicast offers expert consulting services in the energy industry, including software development, project management, and business acumen to help clients achieve their goals globally

Utilities 馃嚭馃嚫 Seattle 219 2000
12
Wowrackwowrack.com

A premier cloud service provider offering Managed Hosting, Dedicated Servers, Colocation, Virtualization, Bandwidth Delivery, and Managed Services to global companies

IT Services and IT Consulting 馃嚭馃嚫 Seattle 195 2001
13
Rythmosrythmos.com

The company specializes in providing loyalty, marketing, and data-driven solutions for organizations, with a focus on agile transformation and customer experience

IT Services and IT Consulting 馃嚭馃嚫 Seattle 186 2007
14
UNIFY Dotsunifydots.com

Global Microsoft Certified Partner specializing in AI, analytics, CRM, ERP solutions Committed to excellence with a focus on service, growth, teamwork, and positive impact

Software Development 馃嚭馃嚫 Seattle 137 2016
15
SnapSoftsnapsoft.io

Cloud-based development company providing end-to-end services on AWS, GCP, and Azure Founded in 2016 with a focus on exceptional team building and professionalism

IT Services and IT Consulting 馃嚭馃嚫 Seattle 130 2016
16
Tangotango.io

This company helps small and midsized businesses create high-quality digital products using nearshore developers, while saving on costs

Software Development 馃嚭馃嚫 Seattle 124 2009
17
Audax Labsaudaxlabs.com

Innovative tech solutions provider with expertise in systems integration, AI, IoT, AR, cloud, and more, offering end-to-end services for digital transformation and business optimization

IT System Custom Software Development 馃嚭馃嚫 Seattle 80 2017
18
CogentSoft Systemscogentsoftsystems.com

CogentSoft provides consulting, technology, and business process outsourcing solutions, specializing in digital strategy, creative CX, software engineering, data/AI, and cloud infrastructure services

IT Services and IT Consulting 馃嚭馃嚫 Seattle 58 2022
19
Seitel Systems, Inc.seitelsystems.com

This company provides comprehensive IT services to small to medium businesses, government agencies, and non-profit organizations since 1990 They focus on building long-term relationships, simplicity, and unbiased expert advice

IT Services and IT Consulting 馃嚭馃嚫 Seattle 50 1990
20
Elite Crest Technologieselitecrest.com

A renowned data analytics and software services consulting agency offering innovative solutions to complex challenges for progressive organizations worldwide

Software Development 馃嚭馃嚫 Seattle 37 2012
21
Bilberrrybilberrry.com

The company designs and develops digital products and online experiences to help clients grow, innovate, and transform by understanding goals and utilizing expertise

Software Development 馃嚭馃嚫 Seattle 34 2009
22
Dotzoo Inc.dotzoo.net

Experienced IT services company specializing in web design, development, e-commerce, SEO, CRM deployment, and mobile app development with a focus on customer satisfaction

IT Services and IT Consulting 馃嚭馃嚫 Seattle 25 1998
23
Valorevalore-consulting.com

We partner with clients to develop digital transformation strategies focused on automation and innovation for sustainable growth, emphasizing strong relationships and community impact

IT Services and IT Consulting 馃嚭馃嚫 Seattle 22 2020
24
Level 11launchconsulting.com

Innovative team delivering high-quality solutions for transformative experiences, recognized for excellence in workplace culture and industry leadership

IT Services and IT Consulting 馃嚭馃嚫 Seattle 20 2009
25
Lighthouse Consulting Inclhseattle.com

Global technology support provider for businesses, offering services locally and worldwide

IT Services and IT Consulting 馃嚭馃嚫 Seattle 19 1999
26
CodeStackcodestacksystems.com

Specializing in custom digital business management tools, development outsourcing, cloud migration, and ongoing support services for businesses

Technology, Information and Internet 馃嚭馃嚫 Seattle 15 2009
27
Inspeero Technologiesinspeero.com

This digital agency provides innovative solutions to drive client growth, focusing on collaboration, communication, and exceptional customer service for lasting relationships

IT Services and IT Consulting 馃嚭馃嚫 Seattle 11 2013
28
Brightwork Health ITbrightworkhealthit.com

Brightwork Consulting specializes in IT services for risk management, solution deployment, and enterprise-wide infrastructure upgrades to enhance client's business operations and growth

Business Consulting and Services 馃嚭馃嚫 Seattle 11 2017
29
GenUIgenui.com

GenUI offers end-to-end product-focused experience design and software development services, helping clients bring their vision to life with quality and speed

Business Consulting and Services 馃嚭馃嚫 Seattle 9 2009
30
Cilver Technologies Inccilvertechnologies.com

A global consulting and IT services company focused on building trust, providing exceptional service, and delivering personalized solutions to meet client needs

IT Services and IT Consulting 馃嚭馃嚫 Seattle 7 2009
31
Looi Consulting LLClooiconsulting.com

A technology consulting firm empowering businesses through seamless integration of people and cutting-edge technology to drive innovation and growth

IT Services and IT Consulting 馃嚭馃嚫 Seattle 7 2010
32
Shujaa Consultingshujaaconsulting.com

Global Salesforce consulting firm specializing in managed services to create sustainable Salesforce Programs for nonprofits and social enterprises

IT Services and IT Consulting 馃嚭馃嚫 Seattle 6 2019
33
Zapariozapario.com

Specializes in IoT, AI, and edge computing solutions, offering electronics ODM services and manufacturing capabilities to bring innovative products to market

IT Services and IT Consulting 馃嚭馃嚫 Seattle 4 2019
34
FocusTekfocusntek.com

Delivering world-class IT services and solutions to businesses, ensuring top-rated support for the digital world

IT Services and IT Consulting 馃嚭馃嚫 Seattle 3 2009
35
Business 2 Virtual LLCbusiness2virtual.com

We provide IT services, web development, marketing strategies, and virtual employees to help businesses thrive in the digital landscape

IT Services and IT Consulting 馃嚭馃嚫 Seattle 2 2016
36
DNA Digital Consulting

DNA Digital Consulting partners with companies to unlock their digital potential, delivering personalized solutions, monetization strategies, product strategies, user-centric design, analytics, and product marketing for better outcomes

Technology, Information and Internet 馃嚭馃嚫 Seattle 2 n/a
37
Balance CGbalancecg.com

A boutique consultancy specializing in product innovation, digital transformation, agile training, and software development, aiming to democratize innovation and deliver tangible business outcomes

IT Services and IT Consulting 馃嚭馃嚫 Seattle 2 2019
38
Myrl Tech - AI and Offensive Security Consultingmyrl.tech

An AI development team focused on assisting with the creation of innovative AI products

IT Services and IT Consulting 馃嚭馃嚫 Seattle 2 2017
39
Maes Consulting Incmaesinfo.com

A leading provider of IT Outsourcing, software development, IT solutions, and BPO services for global clients across various industries

IT Services and IT Consulting 馃嚭馃嚫 Seattle 2 2005

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How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 2, 2026.

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