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.

To assist you in your search for a partner, we’ve compiled this list of the top C# developers in Seattle. Browse descriptions, feedback, and awards to find which can best suit your company’s needs. If you need more support, tell us about your project, and we'll match you with recommended companies.

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

  • 1
    Lunarbyte.io Logo

    Lunarbyte.io

    Overall Rating
    Based on 7 Clutch Reviews
    5.0
    Scheduling 4.9
    Quality 5.0
    Cost 4.9
    NPS/Willingness to Refer 5.0
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    $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.  

    Clients
    Preflight Mitigator
    Dollar Flight Club
    Storytellers for Change LLC
    Industries
    Notable Project

    Lunarbyte.io developed payment systems, mailing solutions, and deliverability functionality for a flight deals platform. They also provided support with WordPress. The client's business more than doubled as a result. 

    "Everything they do is delivered well, and they aren’t stressed about the production process. Those are qualities you can’t buy." – COO, Flight Deals Platform

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  • 2
    Neudesic Logo

    Neudesic

    Overall Rating
    Based on 1 Clutch Review
    4.0
    Scheduling 4.5
    Quality 4.0
    Cost 3.5
    NPS/Willingness to Refer 4.0
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    $25,000+
    250 - 999 Employees
    Seattle WA

     Neudesic is a technology company with offices in Irvine, CA, Atlanta, GA, Chicago, IL, Irving and Houston, TX, Denver, CO, Las Vegas, NV, Exton, PA, Tempe, AZ, Portland, OR, New York, and India.  It specializes in big data consulting, custom software development, cloud consulting, and mobile app development. The agency of more than 800 employees was founded in 2002. Most clients work in the healthcare, energy, and gaming industries. 

    Clients
    Hasbro
    American Cancer Society
    Hyatt
    Xerox
    Industries
    Notable Project

    Neudesic upgraded a recipe website to an efficient Cloud platform.  The system makes available to users a variety of easily accessible recipes, reviews, videos, and shopping lists. These content offerings are customized and can be set to fit users' specific preferences. The website has been growing consistently since Neudesic began their involvement. 

     

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  • 3
    Heaven Solutions Logo

    Heaven Solutions

    Overall Rating
    Based on 1 Clutch Review
    5.0
    Scheduling 4.5
    Quality 5.0
    Cost 5.0
    NPS/Willingness to Refer 5.0
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    $25,000+
    50 - 249 Employees
    Kirkland WA

    Heaven Solutions is an IT staff augmentation company founded in 2005. The company offers IT staff augmentation, application testing, custom software development, web development, and more and has a midsize team. The company is based in Kirkland, Washington; Iași, Romania; Bensheim, Germany and Il-Gżira, Malta.

    Industries
    Notable Project

    Heaven Solutions has aided the custom software development efforts for a streaming service provider's delivery system. They continue to support the platform by implementing enhancements and system integrations.

    "Heaven Solutions is a results-oriented team that strives to deliver optimal results."

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  • 4
    SOUTHWORKS Logo

    SOUTHWORKS

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    $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.
    Industries
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  • 6
    DMC, Inc. Logo

    DMC, Inc.

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    $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.   

    Clients
    3M
    Ford
    Cadbury
    Bosch
    Industries
    Notable Project

    A large ground logistics firm hired DMC to develop a unique IoT device for their centrally-owned fuel depots. DMC created a device to speed up the refueling process and provide useful data to the firms that own the depots.

     

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  • 7
    TangoTeams Logo

    TangoTeams

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    $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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  • 8
    Virtuosity Consulting Logo

    Virtuosity Consulting

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    $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.
    Industries
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  • 9
    Devblock Logo

    Devblock

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    $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.
    Industries
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  • 10
    Redtech Logo

    Redtech

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    $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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  • 11
    Palador Logo

    Palador

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    $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.
    Industries
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Tell us about your project
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 a Manifest Analyst.

TELL US ABOUT YOUR PROJECT