Top 20 C# Developers in Seattle

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Top 20 C# Developers in Seattle

The Best of March 2024

Looking for a top C Sharp software development company in Seattle?

The programming language C Sharp (C#), is general-purpose and used for web and mobile apps. It has a number of advantages: It's object-oriented, has automatic garbage collection, functions across platforms, has backward compatibility, and integrates well with other platforms and services. 

List of the Best Seattle C Sharp (C#) Software Development Companies

  • 1
    (1 Reviews) 5.0
    • Timeliness

      5.0
    • Service Excellence

      5.0
    • Value

      5.0
    • Would Recommend

      5.0
    • $100,000+
    • 250 - 999 employees
    • Seattle, WA

    Founded in 2007, Theorem is a software development firm. The midsize team specializes in custom software development, ux/ui design, IoT development, IT strategy consulting, and more. The company is based in Los Angeles, California; Santa Monica, California; New York, New York and San Francisco, California.

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    Clients

    • AT&T
    • Starbucks
    • Caterpillar
    • American Express

    Industries

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  • 2
    (10 Reviews) 4.7
    • Timeliness

      4.7
    • Service Excellence

      4.7
    • Value

      4.5
    • Would Recommend

      4.9
    • $5,000+
    • 250 - 999 employees
    • Bellevue, WA

    Affirma Consulting is a full-service technology consulting agency. Founded in 2001, Affirma Consulting is based in Seattle, WA with additional offices in Los Angeles, CA, India, Ireland, and Reno, NV. The team of 200+ focuses on consulting for Business Intelligence (BI), Sharepoint, Salesforce, and customer relationship management (CRM) software, they also offer design, marketing, and mobile and web development.

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    Clients

    • Microsoft
    • ESPN
    • Boeing
    • Time

    Industries

  • 3
    (8 Reviews) 5.0
    • Timeliness

      4.9
    • Service Excellence

      5.0
    • Value

      4.9
    • Would Recommend

      5.0
    • $25,000+
    • 2 - 9 employees
    • Seattle, WA

    Lunarbyte.io is a development agency based in Seattle. Since 2019, the 3-person team has built websites, custom software, and mobile apps for predominantly small businesses.  

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    Clients

    • DDM Imports
    • Clean the Scene
    • Preflight Mitigator
    • Dollar Flight Club

    Industries

  • 4
    (12 Reviews) 4.9
    • Timeliness

      4.8
    • Service Excellence

      4.9
    • Value

      4.8
    • Would Recommend

      5.0
    • $10,000+
    • 50 - 249 employees
    • Kirkland, WA

    AccelOne is a software development company based in Kirkland, Wash. with offices in Buenos Aires, Argentina. Founded in 2013, AccelOne's team of 25 employees provides custom software development, mobile app development, and UX/UI design services.

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    Clients

    • Xapo
    • Turner Broadcasting
    • HSBC
    • Ziing

    Industries

  • 5
    (15 Reviews) 5.0
    • Timeliness

      5.0
    • Service Excellence

      5.0
    • Value

      4.9
    • Would Recommend

      5.0
    • $5,000+
    • 10 - 49 employees
    • Seattle, WA

    Slashdev is a small software development company. The Winter Park, Florida-based company was established in 2021. Their services include custom software development, web development, mobile app development, wearable app development, and more.

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    Industries

  • 6
    (1 Reviews) 5.0
    • Timeliness

      5.0
    • Service Excellence

      5.0
    • Value

      4.5
    • Would Recommend

      5.0
    • $25,000+
    • 50 - 249 employees
    • Bellevue, WA

    Redtech is a custom software development firm. They are located in Bellevue, Washington and have a midsize team. Their services include custom software development, non-voice bpo/back office services, digital strategy, web development, and more. The agency was established in 1995.

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  • 7
    (1 Reviews) 5.0
    • Timeliness

      5.0
    • Service Excellence

      5.0
    • Value

      4.5
    • Would Recommend

      5.0
    • $10,000+
    • 50 - 249 employees
    • Bellevue, WA

    Virtuosity Consulting, a custom software development firm, was launched in 2008. They are located in Bellevue, Washington and Navi Mumbai, India and have a midsize team. Their services include custom software development, IT managed services, enterprise app modernization, web development, and more.

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    Industries

  • 8
    (2 Reviews) 4.8
    • Timeliness

      4.8
    • Service Excellence

      4.8
    • Value

      4.3
    • Would Recommend

      5.0
    • $100,000+
    • 250 - 999 employees
    • Seattle, WA

    Founded in 2014, PYCOGroup is a development firm. Their team of around 370 employees is based in Brussels, with an additional office around the globe. They focus on custom software, web, and mobile app development.

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    Clients

    • Microsoft
    • American Express
    • Volkswagen
    • Coach

    Industries

  • 9
    (0 Reviews)

    Not yet reviewed.

    • $10,000+
    • 10 - 49 employees
    • Seattle, WA

    User experience agency Amberteq was founded in 2008. The company offers ux/ui design, custom software development, web development, mobile app development, and more and has a small team. The company is in Bellevue, Washington.

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    Industries

  • 10
    (31 Reviews) 4.8
    • Timeliness

      4.8
    • Service Excellence

      4.8
    • Value

      4.8
    • Would Recommend

      5.0
    • $5,000+
    • 50 - 249 employees
    • Kirkland, WA

    UKAD is a research and development agency based in Sheffield, United Kingdom with offices in France, Poland, and Ukraine. Founded in 2005, their team of about 80 specializes in web development, custom software development, and mobile app development.  

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    Clients

    • AJ Produkter
    • Kaffekapslen
    • Ginza
    • EntitledTo

    Industries

  • 11
    (0 Reviews)

    Not yet reviewed.

    • $10,000+
    • 250 - 999 employees
    • Bellevue, WA
    SOUTHWORKS is a custom software development company based in London, United Kingdom; Bellevue, Washington and Vancouver, Canada. The company focuses on custom software development, cloud consulting & SI, BI & big data consulting & SI, and cybersecurity and has a midsize team.The company was launched in 2004.
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    Industries

  • 12
    (0 Reviews)

    Not yet reviewed.

    • $10,000+
    • 10 - 49 employees
    • Seattle, WA
    Established in 2005, Palador is a custom software development firm. Based in Seattle, Washington and Yogyakarta, Indonesia, their small team offers custom software development, enterprise app modernization, ux/ui design, web development, and more.
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    Industries

  • 13
    (0 Reviews)

    Not yet reviewed.

    • Undisclosed
    • 10 - 49 employees
    • Kirkland, WA
    Jetstream Software, Inc. Is a software development company launched in 1994. The small team provides custom software development. The agency is in Kirkland, Washington.
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  • 14
    (0 Reviews)

    Not yet reviewed.

    • $75,000+
    • 50 - 249 employees
    • Seattle, WA
    TangoTeams is an app development company. Established in 2021, the team provides mobile app development, web development, custom software development, and other application development. Their midsize firm is Seattle, Washington-based.
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  • 15
    (0 Reviews)

    Not yet reviewed.

    • $10,000+
    • 50 - 249 employees
    • Seattle, WA

    DMC, Inc. is an engineering and development firm founded in 1996. It is headquartered in Chicago, but has other locations in Somerville, Mass.; Denver, Colo.; New York, N.Y.; Houston, Texas; and St. Louis, Mo. DMC, Inc. has about 150 employees. While DMC's origins are in robotics and manufacturing automation, they currently offer custom software development and big data consulting services.   

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    Clients

    • 3M
    • Ford
    • Cadbury
    • Bosch

    Industries

  • 16
    (0 Reviews)

    Not yet reviewed.

    • $10,000+
    • 50 - 249 employees
    • Seattle, WA
    Devblock is a software development company. The midsize Seattle, Washington-based company was founded in 2008. Their team focuses on custom software development, mobile app development, web development, e-commerce development, and more.
    Read More

    Industries

  • 17
    (0 Reviews)

    Not yet reviewed.

    • Undisclosed
    • 10 - 49 employees
    • Redmond, WA
    Ataira Analytics Inc. Is a Redmond, Washington-based business intelligence company and cloud consulting & SI company. They offer BI & big data consulting & SI and cloud consulting & SI and were established in 2015.
    Read More

    Industries

  • 18
    (0 Reviews)

    Not yet reviewed.

    • $50,000+
    • 50 - 249 employees
    • Woodinville, WA
    Redapt, a cloud consulting & SI company, is located in Woodinville, Washington. The midsize team focuses on cloud consulting & SI, BI & big data consulting & SI, enterprise app modernization, IT managed services, and more and was established in 1996.
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  • 19
    (0 Reviews)

    Not yet reviewed.

    • Undisclosed
    • 10 - 49 employees
    • Seattle, WA
    Cloud consulting & SI company Marici Technology Solutions was established in 2016. The small team focuses on cloud consulting & SI, ECM consulting and SI, ERP consulting and SI, custom software development, and more. The firm is located in Seattle, Washington.
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    Industries

  • 20
    (0 Reviews)

    Not yet reviewed.

    • Undisclosed
    • 10 - 49 employees
    • Federal Way, WA
    Karma Consulting, Inc. Is a small Federal Way, Washington-based user experience company. Launched in 2009, the team offers ux/ui design, cloud consulting & SI, CRM consulting and SI, ERP consulting and SI, and more.
    Read More

    Industries

  • 21
    (0 Reviews)

    Not yet reviewed.

    • Undisclosed
    • Freelancer employees
    • Everett, WA
    Mystic Engineering / Mystic Industries is a product design company. Their small team is in Everett, Washington and specializes in product design, custom software development, mobile app development, contract manufacturing, and more. The company was established in 1987.
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