Top 60 C# Developers in San Francisco
The Best of December 2025Looking 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, a cloud consulting & SI company, was founded in 2010. Headquartered in Orlando, Florida; Los Angeles, California; Chicago, Illinois and San Francisco, California, their large team focuses on cloud consulting & SI, Custom Software Development, Mobile App Development, Artificial Intelligence, 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, CAAzumo, a software development company, was launched in 2016. They are located in San Francisco, California and Rosario, Argentina and have a midsize team. Azumo offers Custom Software Development, Artificial Intelligence, Mobile App Development, BI & big data consulting & SI, and more.Read More
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Twitter Facebook Omnicom Discovery ChannelIndustries
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5$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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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, CAFounded in 2018, Beesoul LLC is a small website development company headquartered in Richmond, California; Kathmandu, Nepal and London, England. Their services include Web Development, Custom Software Development, and Web Design.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$25,000+250 - 999 employeesKyiv, UkraineInnovecs, 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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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, CADigis, a Fiverr company (NYSE: FVRR) is a custom software development company and web development firm. Launched in 2015, the team offers Custom Software Development and Web Development. Their midsize firm is 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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17$5,000+50 - 249 employeesBirmingham, EnglandSoftware development firm eSquall LLC was established in 2017. The firm specializes in Custom Software Development and Web Development.Read More
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18$50,000+50 - 249 employeesFreeport, NYData analytics company inVerita is based in L'viv, Ukraine; London, England; Freeport, New York and Chicago, Illinois. They specialize in BI & big data consulting & SI, IT staff augmentation, Custom Software Development, and Artificial Intelligence and were founded 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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19$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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20$5,000+50 - 249 employeesSan Francisco, CATechnoBrains Business Solutions LLP is a San Francisco, California-based custom software development company. The midsize agency was launched in 2009. Their services include Custom Software Development, Web Development, Artificial Intelligence, AI Consulting, and more.Read More
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21Undisclosed10 - 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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22$25,000+50 - 249 employeesSan Francisco, CARead More
SmartCat is a big data boutique consultancy firm based in Novi Sad, Serbia, with an office in San Francisco. Founded in 2015, SmartCat's team of about 85 employees provides BI/SI & big data consulting, AI, and cloud consulting services primarily for mid-market businesses.
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23$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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24$5,000+10 - 49 employeesEmeryville, CAHorizon 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.Read More
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YuraHealth.com Kidsy.co Rarewaters.com Flairlabs.ai (YC S22)Industries
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25$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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26$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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27$10,000+10 - 49 employeesSan Ramon, CARead More
Cloud consulting & SI company Initialyze was established in 2015. The small San Ramon, California-based team offers cloud consulting & SI, web design, ux/ui design, architectural design, and more.
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28Undisclosed50 - 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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29$10,000+50 - 249 employeesWalnut Creek, CAMEV, a software development company, is in Walnut Creek, California. The team offers Custom Software Development and Mobile App Development.Read More
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30Undisclosed10 - 49 employeesSan Mateo, CAEstablished in 2010, Hi Dev is a software development company. The team specializes in Custom Software Development and Web Development.Read More
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