90 Software Development Agencies & Firms in Seattle
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90 Software Development Agencies & Firms in Seattle
UPDATED December, 2022

90 Software Development Agencies & Firms in Seattle

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How do you hire a software development company in Seattle for your business? To find the right company, follow these steps:

  1. Make your RFP as specific as you can. Be sure to highlight your end goals and prioritize your feature list.
  2. Determine if your software development team’s location is important to you. With experienced and well-qualified teams located around the world, you’ll never run out of options. While nearshore and onshore software development companies are often easier to collaborate with due to their location, offshore software developers can be more affordable.
  3. Pay potential software developers to work with you on a small project. By bringing 2-3 of your top candidates on board temporarily, you’ll be able to assess the quality of their work and how well you collaborate with their team.

With hundreds of software development agencies to choose from, how do you get started? Our list of the best software development agencies includes client reviews, minimum project size, team size, specialty services, and client focus. Define the services you need, project goals, and budget to begin narrowing your choices. If you need help creating a shortlist, tell us about your project and receive personalized recommendations.

List of the Best Software Development Companies in The Emerald City

Seattle, WA
10 - 49 employees
$25,000+
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Bilberrry, a web design agency, is based in Seattle, Washington and Kyiv, Ukraine. The team focuses on web design, custom software development, and web development.

Services

Custom Software Development Web Design Web Development E-Commerce Development

Client Focus

50% Midmarket ($10M - $1B)
50% Enterprise (>$1B)
Medina, WA
10 - 49 employees
$10,000+
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Flower Press Creative Studio, LLC is an UX agency. They were launched in 2001, and their services include ux/ui design, web design, web development, custom software development, and more.

Services

Custom Software Development UX/UI Design Web Design Logo Mobile App Development

Client Focus

50% Small Business (<$10M)
30% Midmarket ($10M - $1B)
20% Enterprise (>$1B)
Seattle, WA
2 - 9 employees
$10,000+
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Custom software development firm Black Antelope offers custom software development, web development, web design, ux/ui design, and more. They were established in 2009.

Services

Custom Software Development Web Development Web Design E-Commerce Development UX/UI Design

Client Focus

30% Small Business (<$10M)
40% Midmarket ($10M - $1B)
30% Enterprise (>$1B)
Need help selecting a company?

Based on your budget, timeline, and specifications we can help you build a shortlist of companies that perfectly matches your project needs. Schedule a free consultation with an analyst.

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Seattle, WA
10 - 49 employees
$25,000+
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Mobile app development company Zazz was launched in 2011. The team focuses on mobile app development, ux/ui design, custom software development, enterprise app modernization, and more and is located in Seattle, Washington and San Francisco, California.

Services

Custom Software Development Mobile App Development UX/UI Design Enterprise App Modernization

Client Focus

15% Small Business (<$10M)
30% Midmarket ($10M - $1B)
55% Enterprise (>$1B)
Seattle, WA
10 - 49 employees
$100,000+
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Located in Boulder, Colorado; Medellín, Colombia and Denver, Colorado, Flatirons Development is a custom software development firm. They provide custom software development, ux/ui design, mobile app development, web design, and more and were launched in 2018.

Services

Custom Software Development Mobile App Development UX/UI Design Web Design Web Development

Client Focus

34% Small Business (<$10M)
33% Midmarket ($10M - $1B)
33% Enterprise (>$1B)
Bellevue, WA
50 - 249 employees
$25,000+
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MediaSoft Mobile is an application development firm. Headquartered in Moscow, Russia and Ulyanovsk, Russia, their team focuses on mobile app development.

Services

Custom Software Development Web Development E-Commerce Development IT Staff Augmentation Mobile App Development

Client Focus

10% Small Business (<$10M)
50% Midmarket ($10M - $1B)
40% Enterprise (>$1B)
Bellevue, WA
10,000+ employees
$10,000+
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Beyondsoft Consulting Inc. Is a business intelligence company launched in 1995. The company focuses on BI & big data consulting & SI, cloud consulting & SI, IT strategy consulting, custom software development, and more, and is large.

Services

Custom Software Development BI & Big Data Consulting & SI Cloud Consulting & SI Enterprise App Modernization IT Strategy Consulting

Client Focus

30% Midmarket ($10M - $1B)
70% Enterprise (>$1B)
Seattle, WA
2 - 9 employees
$25,000+
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Website development company Lunarbyte.io is based in Seattle, Washington. Established in 2019, the team provides web development, custom software development, and mobile app development.

Services

Custom Software Development Web Development Mobile App Development

Client Focus

50% Small Business (<$10M)
50% Midmarket ($10M - $1B)
Seattle, WA
10 - 49 employees
$5,000+
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Slashdev is a software development firm founded in 2021. The company specializes in custom software development, web development, mobile app development, wearable app development, and more.

Services

Custom Software Development HR Services Blockchain E-Commerce Development IT Staff Augmentation

Client Focus

75% Small Business (<$10M)
25% Midmarket ($10M - $1B)
Seattle, WA
10 - 49 employees
$10,000+
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Helpful Human is a website development firm founded in 2013. The team specializes in web development, custom software development, ux/ui design, mobile app development, and more.

Services

Custom Software Development Web Development Mobile App Development UX/UI Design E-Commerce Development

Client Focus

40% Small Business (<$10M)
35% Midmarket ($10M - $1B)
25% Enterprise (>$1B)
Olympia, WA
250 - 999 employees
$10,000+
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Esteemed is a website development company. The Olympia, Washington-based team provides web development, web design, and custom software development.

Services

Custom Software Development Web Design Web Development

Client Focus

20% Small Business (<$10M)
70% Midmarket ($10M - $1B)
10% Enterprise (>$1B)
Seattle, WA
10 - 49 employees
$10,000+
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Tragic Media is a software development company located in San Diego, California. They provide custom software development, web development, e-commerce development, ux/ui design, and more and were established in 2009.

Services

Custom Software Development Cloud Consulting & SI Artificial Intelligence Blockchain E-Commerce Development

Client Focus

30% Small Business (<$10M)
60% Midmarket ($10M - $1B)
10% Enterprise (>$1B)
Seattle, WA
10 - 49 employees
Undisclosed
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SB Develops is a small Seattle, Washington-based app development firm. Their services include mobile app development, web development, ux/ui design, web design, and more.

Services

Custom Software Development Mobile App Development Web Development Artificial Intelligence

Client Focus

90% Small Business (<$10M)
10% Midmarket ($10M - $1B)
Kirkland, WA
2 - 9 employees
$1,000+
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Application development company CASoft Seattle offers mobile app development, search engine optimization, web design, web development, and more. They are based in Kirkland, Washington.

Services

Custom Software Development Mobile App Development Search Engine Optimization Web Design Web Development

Client Focus

100% Small Business (<$10M)
Seattle, WA
250 - 999 employees
$100,000+
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PYCOGroup is a software development company. The firm is headquartered in Bruxelles, Belgium; Ho Chi Minh City, Vietnam; Paris, France and New York, New York. Their services include custom software development, mobile app development, web development, ux/ui design, and more.

Services

Custom Software Development Mobile App Development Web Development E-Commerce Development IT Staff Augmentation

Client Focus

45% Small Business (<$10M)
50% Midmarket ($10M - $1B)
5% Enterprise (>$1B)
Seattle, WA
2 - 9 employees
$5,000+
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SWECKER is a Seattle, Washington-based web development company. Their services include web development, web design, custom software development, mobile app development, and more.

Services

Custom Software Development Web Development Web Design Mobile App Development Digital Strategy

Client Focus

60% Small Business (<$10M)
40% Midmarket ($10M - $1B)
Seattle, WA
50 - 249 employees
Undisclosed
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UX design agency Smashing Ideas is based in Seattle, Washington. They specialize in ux/ui design, IT strategy consulting, mobile app development, custom software development, and more.

Services

Custom Software Development UX/UI Design IT Strategy Consulting Mobile App Development Web Design
Seattle, WA
250 - 999 employees
Undisclosed
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Projekt202 is a midsize custom software development firm in Addison, Texas; Austin, Texas; Seattle, Washington and San Francisco, California. The team specializes in custom software development, ux/ui design, mobile app development, web development, and more.

Services

Custom Software Development Mobile App Development UX/UI Design Web Development Web Design
Seattle, WA
250 - 999 employees
$100,000+
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Theorem, a software development firm, was established in 2007. The midsize team offers custom software development, ux/ui design, IoT development, IT strategy consulting, and more.

Services

Custom Software Development Business Consulting IT Strategy Consulting Enterprise App Modernization IoT Development

Client Focus

5% Small Business (<$10M)
20% Midmarket ($10M - $1B)
75% Enterprise (>$1B)
Bellevue, WA
50 - 249 employees
$25,000+
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Redtech is a custom software development firm. Based in Bellevue, Washington, their team offers custom software development, non-voice bpo/back office services, digital strategy, web development, and more.

Services

Custom Software Development Back Office Outsourcing Digital Strategy Web Development UX/UI Design

Client Focus

5% Small Business (<$10M)
55% Midmarket ($10M - $1B)
40% Enterprise (>$1B)
Bellevue, WA
50 - 249 employees
$10,000+
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Virtuosity Consulting is a custom software development company. Their midsize team is in Bellevue, Washington and Navi Mumbai, India. Their services include custom software development, IT managed services, enterprise app modernization, web development, and more.

Services

Custom Software Development IT Managed Services CRM Consulting and SI BI & Big Data Consulting & SI Blockchain

Client Focus

30% Small Business (<$10M)
30% Midmarket ($10M - $1B)
40% Enterprise (>$1B)
Seattle, WA
2 - 9 employees
$25,000+
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Software development company Northwest Independent Ruby Development was launched in 2011. The agency specializes in custom software development and web development, and is small.

Services

Custom Software Development Web Development
Bellevue, WA
250 - 999 employees
$1,000+
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Founded in 2009, Neighborsoft.team, a midsize e-commerce development firm, is located in Bellevue, Washington. Their team focuses on e-commerce development, web development, custom software development, mobile app development, and more.

Services

Custom Software Development E-Commerce Development Mobile App Development Web Development Web Design

Client Focus

100% Small Business (<$10M)
Redmond, WA
2 - 9 employees
$1,000+
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Dynomind.tech is a custom software development firm. Headquartered in Redmond, Washington and Jerusalem, Israel, their team provides custom software development, web development, mobile app development, BI &amp; big data consulting &amp; SI, and more.

Services

Custom Software Development Web Development Mobile App Development BI & Big Data Consulting & SI Cloud Consulting & SI

Client Focus

70% Small Business (<$10M)
30% Midmarket ($10M - $1B)
Seattle, WA
250 - 999 employees
$25,000+
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Neudesic, a big data company, is headquartered in Irvine, California; Lombard, Illinois; Irving, Texas and Denver, Colorado. Their services include BI & big data consulting & SI, custom software development, cloud consulting & SI, enterprise app modernization, and more.

Services

Custom Software Development BI & Big Data Consulting & SI Cloud Consulting & SI Enterprise App Modernization Mobile App Development

Client Focus

20% Midmarket ($10M - $1B)
80% Enterprise (>$1B)
Bellevue, WA
10 - 49 employees
$75,000+
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Located in Bellevue, Washington, Tasklancers LLC is a small web design company. Their services include web design, custom software development, web development, mobile app development, and more.

Services

Custom Software Development E-Commerce Development Mobile App Development Web Design Web Development

Client Focus

40% Small Business (<$10M)
35% Midmarket ($10M - $1B)
25% Enterprise (>$1B)
Tacoma, WA
2 - 9 employees
Undisclosed
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Eco Software Solutions LLC is a software development firm. They were founded in 2022, and their services include custom software development, web development, CRM consulting and SI, mobile app development, and more.

Services

Custom Software Development Web Development Application Management & Support CRM Consulting and SI Call Center Services
Seattle, WA
10,000+ employees
$5,000+
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Based in Buenos Aires, Argentina; San Francisco, California and Ciudad de México, Mexico, Globant is a large web development firm. Their services include web development, custom software development, ux/ui design, content marketing, and more.

Services

Custom Software Development Web Development Content Marketing Digital Strategy Mobile App Development
Arlington, WA
10 - 49 employees
$10,000+
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FDG Web, Inc, a web design company, was established in 2000. They provides web design, web development, custom software development, and e-commerce development.

Services

Custom Software Development Web Design Web Development E-Commerce Development

Client Focus

50% Small Business (<$10M)
25% Midmarket ($10M - $1B)
25% Enterprise (>$1B)
Bellevue, WA
10 - 49 employees
$10,000+
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Founded in 2008, Amberteq is an UX design agency. Their services include ux/ui design, custom software development, web development, mobile app development, and more.

Services

Custom Software Development Enterprise App Modernization Cloud Consulting & SI ERP Consulting and SI

Client Focus

50% Small Business (<$10M)
50% Midmarket ($10M - $1B)
Seattle, WA
10 - 49 employees
$5,000+
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Fenyx Studio is a mobile application development company. The company is headquartered in Santa Monica, California and Seattle, Washington. Their services include mobile app development, web development, and custom software development.

Services

Custom Software Development Mobile App Development Web Development

Client Focus

50% Small Business (<$10M)
30% Midmarket ($10M - $1B)
20% Enterprise (>$1B)
Bellevue, WA
10 - 49 employees
$10,000+
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KuikaSoft is a custom software development firm. Launched in 2017, the team focuses on custom software development, mobile app development, and web development.

Services

Custom Software Development Mobile App Development Web Development

Client Focus

70% Small Business (<$10M)
30% Midmarket ($10M - $1B)
Seattle, WA
50 - 249 employees
$100,000+
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Carbon Five, a software development company, is located in San Francisco, California; Santa Monica, California; Chattanooga, Tennessee and New York, New York. The team focuses on custom software development, mobile app development, web development, web design, and more.

Services

Custom Software Development Mobile App Development Web Development Web Design Branding

Client Focus

40% Small Business (<$10M)
30% Midmarket ($10M - $1B)
30% Enterprise (>$1B)
Seattle, WA
10 - 49 employees
$10,000+
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Palador, a software development company, was established in 2005. They provides custom software development, enterprise app modernization, ux/ui design, web development, and more.

Services

Custom Software Development Enterprise App Modernization UX/UI Design Web Development Application Management & Support

Client Focus

10% Small Business (<$10M)
50% Midmarket ($10M - $1B)
40% Enterprise (>$1B)
Seattle, WA
50 - 249 employees
$1,000+
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Custom software development firm ConnectPOS provides custom software development and application management &amp; support. They were founded in 2013.

Services

Custom Software Development Application Management & Support

Client Focus

80% Small Business (<$10M)
20% Midmarket ($10M - $1B)
Bellevue, WA
50 - 249 employees
$10,000+
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Fresh Consulting is a web design agency. They were founded in 2007, and their services include web design, custom software development, mobile app development, branding, and more.

Services

Custom Software Development Web Design Mobile App Development Branding Content Marketing
Seattle, WA
50 - 249 employees
Undisclosed
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Formidable is a software development firm. The team focuses on custom software development, IT managed services, cloud consulting & SI, and application testing, and the firm is located in Seattle, Washington and London, United Kingdom.

Services

Custom Software Development IT Managed Services Application Testing Cloud Consulting & SI
Redmond, WA
250 - 999 employees
$25,000+
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Plain Concepts, an artificial intelligence company, was founded in 2006. The midsize team specializes in Artificial Intelligence, BI &amp; big data consulting &amp; SI, custom software development, ux/ui design, and more.

Services

Custom Software Development Artificial Intelligence BI & Big Data Consulting & SI UX/UI Design Web Development

Client Focus

20% Midmarket ($10M - $1B)
80% Enterprise (>$1B)
Seattle, WA
10 - 49 employees
$5,000+
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LabKey is a custom software development company. They were founded in 2005, and their services include custom software development and cloud consulting &amp; SI.

Services

Custom Software Development Cloud Consulting & SI
Seattle, WA
50 - 249 employees
$10,000+
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DMC, Inc. Is a custom software development company launched in 1996. The team provides custom software development, CRM consulting and SI, unified communications consulting & SI, application testing, and more and is based in Chicago, Illinois; Somerville, Massachusetts; Denver, Colorado and Houston, Texas.

Services

Custom Software Development Application Testing CRM Consulting and SI Unified Communications Consulting & SI Web Development
Issaquah, WA
50 - 249 employees
$5,000+
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Business intelligence company FluentPro Software Corporation is headquartered in Redmond, Washington. Their services include BI & big data consulting & SI, IT managed services, and IT strategy consulting.

Services

Custom Software Development BI & Big Data Consulting & SI IT Managed Services IT Strategy Consulting

Client Focus

20% Midmarket ($10M - $1B)
80% Enterprise (>$1B)
Bellevue, WA
250 - 999 employees
$10,000+
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SOUTHWORKS, a custom software development firm, is based in London, United Kingdom; Bellevue, Washington and Vancouver, Canada. The team focuses on custom software development, cloud consulting &amp; SI, BI &amp; big data consulting &amp; SI, and cybersecurity.

Services

Custom Software Development Cloud Consulting & SI BI & Big Data Consulting & SI Cybersecurity

Client Focus

10% Small Business (<$10M)
50% Midmarket ($10M - $1B)
40% Enterprise (>$1B)
Seattle, WA
50 - 249 employees
$10,000+
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Lunavi is a software development firm established in 2007. The company offers custom software development, cloud consulting & SI, IT managed services, enterprise app modernization, and more, and is midsize.

Services

Custom Software Development Cloud Consulting & SI IT Managed Services Application Management & Support Application Testing

Client Focus

10% Small Business (<$10M)
45% Midmarket ($10M - $1B)
45% Enterprise (>$1B)
Seattle, WA
10 - 49 employees
Undisclosed
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PHYTEC America, a custom software development firm, was founded in 1986. In Bainbridge Island, Washington; Seattle, Washington; Mainz, Germany and Bengaluru, India, the team specializes in custom software development, IT strategy consulting, application testing, and application management & support.

Services

Custom Software Development IT Strategy Consulting Application Management & Support Application Testing
Seattle, WA
2 - 9 employees
$10,000+
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Web design company Sandcastle Web Design and Development was launched in 1998. The small team offers web design, custom software development, e-commerce development, and mobile app development.

Services

Custom Software Development Business Consulting Digital Strategy E-Commerce Development Email Marketing
Seattle, WA
50 - 249 employees
Undisclosed
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Pensar Development is a Seattle, Washington-based product design company. They focus on product design, custom software development, and ux/ui design and were founded in 2001.

Services

Custom Software Development Product Design UX/UI Design
Bellevue, WA
10 - 49 employees
$10,000+
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Seattle Software Developers, a software development company, is located in Bellevue, Washington; London, United Kingdom; Rome, Italy and Augsburg, Germany. They provide custom software development, web development, mobile app development, ux/ui design, and more.

Services

Custom Software Development Web Development Mobile App Development Artificial Intelligence UX/UI Design
Seattle, WA
10 - 49 employees
Undisclosed
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Schema Design, a graphic design agency, was established in 2012. The company specializes in graphic design, custom software development, branding, and logo.

Services

Custom Software Development Graphic Design Branding Logo
Redmond, WA
50 - 249 employees
Undisclosed
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Custom software development company Flexasoft was founded in 2007. The firm offers custom software development, business consulting, application testing, and IT managed services.

Services

Custom Software Development Application Testing Business Consulting IT Managed Services
Kirkland, WA
10 - 49 employees
Undisclosed
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Jetstream Software, Inc. Is a custom software development firm. They were established in 1994 and offer custom software development.

Services

Custom Software Development
Need help selecting a company?

Based on your budget, timeline, and specifications we can help you build a shortlist of companies that perfectly matches your project needs. Schedule a free consultation with an analyst.

Free Consultation