Top 70 C# Developers in San Francisco
The Best of July 2026Looking for a top C Sharp software development company in San Francisco?
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 San Francisco. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
List of the Best San Francisco C Sharp (C#) Software Development Companies
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1$25,000+1,000 - 9,999 employeesSan Francisco, CASimform is a cloud consulting & SI company. Founded in 2010, the agency is in Orlando, Florida; Los Angeles, California; Chicago, Illinois and San Francisco, California. The large team specializes in cloud consulting & SI, Artificial Intelligence, Custom Software Development, Enterprise App Modernization, and more.Read More
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RedbullIndustries
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2$50,000+50 - 249 employeesSan Francisco, CARead More
Cybercraft Inc. is a development agency headquartered in Lviv, Ukraine, that was established 2012. Their team of 19 offers custom software development, IT staff augmentation, web development, and more.
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Palo Alto NetworksIndustries
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3$10,000+50 - 249 employeesSan Mateo, CAG360Technologies is a custom software development firm. Established in 2010, the team provides Custom Software Development, Generative AI, Application Testing, Application Management & Support, and more. Their midsize company is located in San Mateo, California and Montevideo, Uruguay.Read More
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4$10,000+50 - 249 employeesSan Francisco, CADouble Coconut is a mobile application development firm. They are in San Francisco, California and Yerevan, Armenia and have a midsize team. Their services include Mobile App Development, Web Development, Blockchain, and Custom Software Development. The firm was founded in 2011.Read More
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EA Sports | Madden NFL Microsoft Casual Games Ellen Degeneres OTG GamesIndustries
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5$10,000+50 - 249 employeesSan Francisco, CAAzumo, an artificial intelligence company, was founded in 2016. Their midsize team is headquartered in San Francisco, California and Rosario, Argentina. The agency provides Artificial Intelligence, Custom Software Development, Generative AI, AI Agents, and more.Read More
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Twitter Facebook Omnicom Discovery ChannelIndustries
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6$25,000+250 - 999 employeesSan Francisco, CARobosoft Technologies Inc. Is a San Francisco, California-based app development company. They offer Mobile App Development, UX/UI Design, Web Development, Custom Software Development, and more and were launched in 1996.Read More
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Warner Bros. Discovery HSBC McDonalds Mercury FinanceIndustries
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7$1,000+10 - 49 employeesRichmond, CABeesoul LLC is an AI firm. The small team is based in Richmond, California; Kathmandu, Nepal and London, England. Their services include Artificial Intelligence, Custom Software Development, Generative AI, AI Agents, and more.Read More
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8$100,000+1,000 - 9,999 employeesSan Francisco, CARead More
Headquartered in San Francisco, Wizeline is a global technology services provider with delivery centers in Mexico, Colombia, Spain, and Vietnam. Since its founding in 2014, Wizeline has grown to over 1,300 employees specializing in product/platform development, UX design, data & AI, cloud & DevOps, and product evolution services.
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Fitz Frames -
9$25,000+50 - 249 employeesSan Francisco, CAKevuru Games is a software development company launched in 2012. The agency offers Custom Software Development, Mobile App Development, Other Application Development, and UX/UI Design and has a midsize team. The agency is headquartered in Kyiv, Ukraine; San Francisco, California and Warszawa, Poland.Read More
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10$25,000+50 - 249 employeesOrinda, CARead More
Based out of Orinda, CA with satellite offices in India and Croatia, Daxima is a software development company. The team of more than 50 employees has been in business since 2003. They provide web, software, and mobile app development for clients around the world.
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T-Mobile USIndustries
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11$10,000+10 - 49 employeesSan Francisco, CATekxai is a custom software development firm founded in 2020. Located in San Francisco, California; Milton, Canada and Lahore, Pakistan, their small team offers Custom Software Development, Artificial Intelligence, IT strategy consulting, Enterprise App Modernization, and more.Read More
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12$5,000+10 - 49 employeesSan Mateo, CARead More
Located in San Mateo, California and Beograd, Serbia, Action Engine is a software development firm. They offer custom software development, web development, ux/ui design, mobile app development, and more and were launched in 2017.
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13$10,000+10 - 49 employeesSan Francisco, CAPhiBonacci AI is a software development firm established in 2021. The small team specializes in custom software development, AR/VR development, blockchain, corporate training & coaching, and more. The firm is in Ahmedabad, India and San Francisco, California.Read More
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Wartsila Lenovo Qualcomm Jurong DigitalIndustries
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14$5,000+1,000 - 9,999 employeesSan Francisco, CARead More
Established in 2011, AppTecHub is a large mobile application development company. Their team offers mobile app development, web development, and custom software development. The agency is located in San Francisco, California.
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15$10,000+50 - 249 employeesSan Mateo, CARead More
Located in San Mateo, Calif., Ribbonfalls is a full stack development house boasting a team of at least 50 employees. The company was started in 2019 and offers mobile app, web, and custom software development as well as UX/UI design services. Their clients range from small to mid-sized businesses.
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LamdenIndustries
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16$5,000+50 - 249 employeesSan Francisco, CATekbees is a midsize software development firm. Based in San Francisco, California and Bogotá, Colombia, the agency was established in 2013. Their services include Custom Software Development, Web Development, Mobile App Development, Artificial Intelligence, and more.Read More
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Diebold-NixdorfIndustries
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17$5,000+50 - 249 employeesSan Francisco, CAFounded in 2015, Digis, a Fiverr company (NYSE: FVRR) is a custom software development company. The midsize team specializes in Custom Software Development, Web Development, and IT staff augmentation. The firm is based in London, England; New York, New York; București, Romania and L'viv, Ukraine.Read More
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Blablacar Hubspot PwC HumaIndustries
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18$1,000+250 - 999 employeesSan Mateo, CAERP consulting and SI company Folio3 Agtech was established in 2005. The agency specializes in ERP consulting and SI and Custom Software Development.Read More
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19$25,000+250 - 999 employeesSan Francisco, CAInnovecs, a software development firm, is based in New York, New York; Kyiv, Ukraine; San Francisco, California and Tel Aviv-Jaffa, Israel. Launched in 2011, the midsize team offers Custom Software Development, DevOps Managed Services, BI & big data consulting & SI, cloud consulting & SI, and more.Read More
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SGNIndustries
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20Undisclosed10 - 49 employeesSan Francisco, CAFounded in 1987, Langtech is a small IT managed services company. Their services include IT managed services and Custom Software Development.Read More
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21$5,000+50 - 249 employeesSan Francisco, CAEstablished in 2009, TechnoBrains Business Solutions LLP is a midsize artificial intelligence firm headquartered in Ahmedabad, India and San Francisco, California. Their services include Artificial Intelligence, Custom Software Development, Web Development, Mobile App Development, and more.Read More
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22$25,000+50 - 249 employeesSan Francisco, CASmartCat is an AI development company. The midsize team is based in Novi Sad, Serbia and San Francisco, California. Their services include Artificial Intelligence, Custom Software Development, BI & big data consulting & SI, cloud consulting & SI, and more.Read More
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23$50,000+50 - 249 employeesSan Francisco, CAInVerita is a L'viv, Ukraine-based data analytics company. They provide BI & big data consulting & SI, Artificial Intelligence, and Custom Software Development and were established in 2015.Read More
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Perforce, Methodics, Mediashout, Kroger Group, HILTI, Scrafts, Dilligend, OpenLogic, Perfecto, Government of SA, WGSN, numerous YCombinator-backed startupsIndustries
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24$1,000+10 - 49 employeesSan Francisco, CARead More
Alternova is a software development studio based in Medellin, Colombia, with an office in San Francisco. The studio, founded in 2019, has a team of around 20 that provides custom software development, web design & development, AR/VR development, mobile app development, and e-commerce development services. Alternova serves enterprise and smaller-sized companies in the business services, gaming, real estate, and e-commerce industries.
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UCSFIndustries
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25$5,000+10 - 49 employeesEmeryville, CARead More
Horizon Labs is a small Irvine, California-based web development company. They focus on Web Development, Custom Software Development, Artificial Intelligence, IT staff augmentation, and more and were founded in 2019.
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YuraHealth.com Kidsy.co Rarewaters.com Flairlabs.ai (YC S22)Industries
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26$25,000+250 - 999 employeesPleasanton, CAAltoros is a midsize Blockchain company. Founded in 2001, the firm is based in Pleasanton, California; Buenos Aires, Argentina; Oslo, Norway and Helsinki, Finland. Their team offers Blockchain, Custom Software Development, Web Development, Enterprise App Modernization, and more.Read More
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AllstateIndustries
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27$10,000+50 - 249 employeesWalnut Creek, CASoftware development company Creativa Studios is in Walnut Creek, California and San Salvador, El Salvador. They specialize in Custom Software Development, Web Development, Mobile App Development, Application Testing, and more and were founded in 2003.Read More
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Mitratech Inc.Industries
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28$100,000+10 - 49 employeesRedwood City, CARead More
Accelerance is a software development firm. Founded in 2001, the small agency is located in Redwood City, California; Charlotte, North Carolina; Buenos Aires, Argentina and Monterrey, Mexico. Their team specializes in Custom Software Development, Mobile App Development, Artificial Intelligence, Generative AI, and more.
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AcrowireIndustries
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29$100,000+50 - 249 employeesNewark, CARead More
Dibutech is a software development firm. The midsize Concord, California-based team provides custom software development and web development. The firm was launched in 2018.
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30Undisclosed50 - 249 employeesBrisbane, CAVOX Network Solutions is a software development firm. The team focuses on Custom Software Development and Customer Service Outsourcing and is located in Brisbane, California.Read More
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