100 Software Development Agencies & Firms in Seattle
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100 Software Development Agencies & Firms in Seattle
UPDATED April, 2024

100 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.

List of the Best Software Development Companies in The Emerald City

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

Client Focus

25% Small Business (<$10M)
50% Midmarket ($10M - $1B)
25% Enterprise (>$1B)
Seattle, WA
50 - 249 employees
$75,000+
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Valere Labs is a software development firm. Based in Shrewsbury, Massachusetts, their team provides custom software development, mobile app development, web development, Artificial Intelligence, and more.

Services

Custom Software Development AI Development Generative AI Mobile App Development AI Consulting

Client Focus

50% Small Business (<$10M)
35% Midmarket ($10M - $1B)
15% Enterprise (>$1B)
Kirkland, WA
50 - 249 employees
$5,000+
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Custom software development firm UKAD was founded in 2005. The team specializes in custom software development, web development, e-commerce development, IT staff augmentation, and more.

Services

Custom Software Development IT Staff Augmentation E-Commerce Development Web Development Web Design

Client Focus

80% Small Business (<$10M)
20% Midmarket ($10M - $1B)
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Based on your budget, timeline, and specifications we can help you build a shortlist of companies that perfectly matches your project needs. Get started by submitting your project details.

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Seattle, WA
50 - 249 employees
$25,000+
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Midsize mobile app development firm Mobcoder, is in Seattle , Washington; Cobham, United Kingdom and Noida, India. Their services include mobile app development, web development, custom software development, AR/VR development, and more.

Services

Custom Software Development AI Development IT Staff Augmentation BI & Big Data Consulting & SI DevOps Managed Services

Client Focus

30% Small Business (<$10M)
40% Midmarket ($10M - $1B)
30% Enterprise (>$1B)
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 IT Staff Augmentation E-Commerce Development Web Design Web Development

Client Focus

50% Midmarket ($10M - $1B)
50% Enterprise (>$1B)
Kirkland, WA
250 - 999 employees
$5,000+
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Skelia is an IT staff augmentation company. The Koerich, Luxembourg-based agency was founded in 2008. Their team specializes in IT staff augmentation, HR services, custom software development, IT strategy consulting, and more.

Services

Custom Software Development IT Staff Augmentation IT Strategy Consulting BI & Big Data Consulting & SI Cloud Consulting & SI

Client Focus

25% Small Business (<$10M)
40% Midmarket ($10M - $1B)
35% Enterprise (>$1B)
Medina, WA
10 - 49 employees
$25,000+
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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 Mobile App Development AI Development Web Development

Client Focus

40% Small Business (<$10M)
40% Midmarket ($10M - $1B)
20% Enterprise (>$1B)
Seattle, WA
50 - 249 employees
$5,000+
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Vinova is a mobile application development company. Established in 2010, their team specializes in mobile app development, web development, custom software development, e-commerce development, and more.

Services

Custom Software Development Mobile App Development Web Development Blockchain IT Staff Augmentation

Client Focus

40% Small Business (<$10M)
40% Midmarket ($10M - $1B)
20% Enterprise (>$1B)
Seattle, WA
2 - 9 employees
$25,000+
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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)
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 Recruiting Staffing Blockchain E-Commerce Development

Client Focus

75% Small Business (<$10M)
25% Midmarket ($10M - $1B)
Seattle, WA
250 - 999 employees
$50,000+
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Gaper is an IT staff augmentation company. In San Francisco, California; New York, New York; San Mateo, California and Austin, Texas, the firm was founded in 2018. Their services include IT staff augmentation, custom software development, enterprise app modernization, and Artificial Intelligence.

Services

Custom Software Development IT Staff Augmentation AI Development Enterprise App Modernization

Client Focus

40% Small Business (<$10M)
50% Midmarket ($10M - $1B)
10% Enterprise (>$1B)
Seattle, WA
50 - 249 employees
$50,000+
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Based in Seattle, Washington and San Francisco, California, ThirstySprout is an IT staff augmentation company. They offer IT staff augmentation, custom software development, Artificial Intelligence, AR/VR development, and more and were established in 2017.

Services

Custom Software Development Generative AI IT Staff Augmentation AI Development Web Development

Client Focus

35% Small Business (<$10M)
40% Midmarket ($10M - $1B)
25% Enterprise (>$1B)
Seattle, WA
10 - 49 employees
$25,000+
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UpTop is an UX design agency. They focus on ux/ui design, mobile app development, web development, and e-commerce development and are in Seattle, Washington.

Services

Custom Software Development UX/UI Design Mobile App Development

Client Focus

60% Midmarket ($10M - $1B)
40% Enterprise (>$1B)
Kirkland, WA
50 - 249 employees
$10,000+
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AccelOne is an user experience design agency. The team provides ux/ui design, mobile app development, application testing, custom software development, and more, and the firm is headquartered in Kirkland, Washington; Ciudad de Buenos Aires, Argentina and Henderson, Nevada.

Services

Custom Software Development IT Staff Augmentation Mobile App Development UX/UI Design

Client Focus

Bellevue, WA
250 - 999 employees
$5,000+
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Software development firm Affirma Consulting was established in 2001. The midsize team provides custom software development, BI & big data consulting & SI, CRM consulting and SI, ECM consulting and SI, and more.

Services

Custom Software Development Digital Strategy BI & Big Data Consulting & SI Cloud Consulting & SI CRM Consulting and SI

Client Focus

10% Small Business (<$10M)
45% Midmarket ($10M - $1B)
45% Enterprise (>$1B)
Puyallup, WA
10 - 49 employees
$25,000+
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Devscale is an application development firm. They are located in Chicago, Illinois; Ogden, Utah; Washington, District of Columbia and San Francisco, California and have small team of experts. Their services include mobile app development, ux/ui design, and web development.

Services

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

Client Focus

35% Small Business (<$10M)
35% Midmarket ($10M - $1B)
30% 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)
Bellevue, WA
10 - 49 employees
$5,000+
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Founded in 2021, Innova is a custom software development firm. Located in Miami Beach, Florida; Yerevan, Armenia and Bellevue, Washington, the team offers custom software development, web development, mobile app development, other application development, and more.

Services

Custom Software Development Mobile App Development Other Application Development Web Development AI Development

Client Focus

30% Small Business (<$10M)
30% Midmarket ($10M - $1B)
40% Enterprise (>$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)
Seattle, WA
10 - 49 employees
$50,000+
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New Normal is a web development company founded in 2012. The small team focuses on web development, mobile app development, and e-commerce development.

Services

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

Client Focus

20% Small Business (<$10M)
60% Midmarket ($10M - $1B)
20% Enterprise (>$1B)
Bellevue, WA
10 - 49 employees
$5,000+
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Scalex Technology Solutions, a cloud consulting & SI company, is based in Bellevue, Washington and Pune, India. Their services include cloud consulting & SI, mobile app development, custom software development, and IT managed services.

Services

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

Client Focus

20% Small Business (<$10M)
40% Midmarket ($10M - $1B)
40% Enterprise (>$1B)
Bothell, WA
2 - 9 employees
$5,000+
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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 IT Managed Services Application Management & Support Other IT Consulting and SI

Client Focus

80% Small Business (<$10M)
20% Midmarket ($10M - $1B)
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+
Visit Site

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
250 - 999 employees
$100,000+
Visit Site

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)
Seattle, WA
10 - 49 employees
$50,000+
Visit Site
ATOMICUS is a custom software development company established in 1999. The agency offers custom software development, and is small.

Services

Custom Software Development Web Development AI Development Mobile App Development Other Application Development

Client Focus

25% Small Business (<$10M)
25% Midmarket ($10M - $1B)
50% Enterprise (>$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

Client Focus

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)
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 AI Development UX/UI Design

Client Focus

Seattle, WA
2 - 9 employees
$25,000+
Visit Site

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

Client Focus

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)
Bellevue, WA
1,000 - 9,999 employees
Undisclosed
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Insight Global is a human resources agency in Birmingham, Alabama. Their services include HR services.

Services

Custom Software Development Staffing AI Development BI & Big Data Consulting & SI Cloud Consulting & SI

Client Focus

10% Small Business (<$10M)
40% Midmarket ($10M - $1B)
50% Enterprise (>$1B)
Kingston, WA
1,000 - 9,999 employees
Undisclosed
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Room 8 Group, a mobile application development company, focus on mobile app development, web development, application testing, ux/ui design, and more. They were founded in 2011.

Services

Custom Software Development Mobile App Development Application Testing Graphic Design UX/UI Design

Client Focus

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)
Seattle, WA
10,000+ employees
$5,000+
Visit Site

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

Client Focus

Issaquah, WA
50 - 249 employees
Undisclosed
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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)
Seattle, WA
10 - 49 employees
$10,000+
Visit Site

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)
Burien, WA
2 - 9 employees
$5,000+
Visit Site

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 E-Commerce Development Mobile App Development Web Design Web Development

Client Focus

40% Small Business (<$10M)
60% Midmarket ($10M - $1B)
Seattle, WA
10 - 49 employees
$5,000+
Visit Site
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)
Seattle, WA
50 - 249 employees
$100,000+
Visit Site
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+
Visit Site
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+
Visit Site
Custom software development firm ConnectPOS provides custom software development and application management & support. They were founded in 2013.

Services

Custom Software Development Application Management & Support

Client Focus

80% Small Business (<$10M)
20% Midmarket ($10M - $1B)
Seattle, WA
10 - 49 employees
$5,000+
Visit Site

Established in 2002, AMP Creative is a corporate training company. In Dallas, Texas and Seattle, Washington, the team focuses on corporate training, custom software development, AR/VR development, and web development.

Services

Custom Software Development Corporate Training & Coaching Video Production AR/VR Development

Client Focus

20% Midmarket ($10M - $1B)
80% Enterprise (>$1B)
North Bend, WA
50 - 249 employees
$75,000+
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Based in North Bend, Washington, Binary Anvil Inc. Is a custom software development company. They offer custom software development, web development, CRM consulting and SI, ECM consulting and SI, and more and were established in 2006.

Services

Custom Software Development E-Commerce Development CRM Consulting and SI ECM Consulting and SI ERP Consulting and SI

Client Focus

25% Small Business (<$10M)
75% Midmarket ($10M - $1B)
Seattle, WA
10 - 49 employees
$5,000+
Visit Site
Small UX company Caravel Labs, is based in Seattle, Washington. Their services include ux/ui design, web design, mobile app development, and web development.

Services

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

Client Focus

45% Small Business (<$10M)
25% Midmarket ($10M - $1B)
30% Enterprise (>$1B)
Bellevue, WA
250 - 999 employees
Undisclosed
Visit Site
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 UX/UI Design AR/VR Development Digital Engineering Mobile App Development

Client Focus

Redmond, WA
250 - 999 employees
$25,000+
Visit Site
Plain Concepts, an artificial intelligence company, was founded in 2006. The midsize team specializes in Artificial Intelligence, BI & big data consulting & SI, custom software development, ux/ui design, and more.

Services

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

Client Focus

20% Midmarket ($10M - $1B)
80% Enterprise (>$1B)
Seattle, WA
50 - 249 employees
$10,000+
Visit Site

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

Client Focus

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. Get started by submitting your project details.

Get Started