Top 100 C# Developers
The Best of December 2025Looking for a top C# programmer?
C Sharp, or C#, is a programming language created by Microsoft. It's general-purpose and addresses static typing, object- and component-oriented programming approaches. It uses the .NET framework and is best for developing web apps, desktop apps, mobile apps, and games.
That's why we've created this list of the best C# developers for you to review. Read through company descriptions, former clients, and notable projects to find the best fit for your business.
List of the Best C# Programmers
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61$25,000+250 - 999 employeesWarszawa, PolandITMAGINATION, a midsize custom software development company, is headquartered in Warszawa, Poland. Established in 2008, the team offers Custom Software Development, BI & big data consulting & SI, cloud consulting & SI, Artificial Intelligence, and more.Read More
Clients
American Express (previously Kabbage)Industries
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62$100,000+1,000 - 9,999 employeesNew York, NYSoftware development firm DataArt is located in New York, New York; Zug, Switzerland; London , England and München, Germany. Established in 1997, the large team provides Custom Software Development, IoT development, Artificial Intelligence, BI & big data consulting & SI, and more.Read More
Clients
Ocado Technology Metro Markets Nasdaq InvescoIndustries
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63$10,000+50 - 249 employeesWarszawa, PolandRead More
In Warszawa, Poland; Dubai, United Arab Emirates; Lisboa, Portugal and Richmond, Virginia, Celadonsoft is a custom software development firm. The company offers Custom Software Development, Artificial Intelligence, Web Development, Mobile App Development, and more and is midsize.The company was established in 2016.
Clients
Veil Talented Music App L'ETO EIEVIndustries
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64$50,000+250 - 999 employeesNaples, FLIntetics Inc. Is an IT managed services company founded in 1995. The firm focuses on IT managed services, IT staff augmentation, Custom Software Development, Web Development, and more and has a midsize team. The firm is headquartered in Naples, Florida; Düsseldorf, Germany; Kraków, Poland and Kyiv, Ukraine.Read More
Clients
Encyclopaedia BritannicaIndustries
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65$5,000+50 - 249 employeesAhmedabad, IndiaSoftware development firm Shaligram Infotech is headquartered in Ahmedabad, India; London, England; Brisbane City, Australia and Frisco, Texas. Founded in 2015, the midsize team offers Custom Software Development, Web Development, CRM consulting and SI, and Artificial Intelligence.Read More
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66$25,000+50 - 249 employeesBoston, MABallast Lane Applications LLC is a custom software development company. They provide Custom Software Development, UX/UI Design, and Artificial Intelligence and were founded in 2011. Their midsize team is headquartered in Boston, Massachusetts; Medellín, Colombia and Marblehead, Massachusetts.Read More
Clients
Reibus InternationalIndustries
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67$5,000+1,000 - 9,999 employeesSão Paulo, BrazilFCamara is an user experience agency. Their large team is in São Paulo, Brazil; Leiria, Portugal; St Albans, England and Dubai, United Arab Emirates. Their services include UX/UI Design, IT strategy consulting, cloud consulting & SI, IT staff augmentation, and more. The firm was founded in 2006.Read More
Clients
Farfetch IPSOS Elfa Group BTG PactualIndustries
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68$25,000+1,000 - 9,999 employeesOrlando, FLSimform is a cloud consulting & SI company. They are headquartered in Orlando, Florida; Los Angeles, California; Chicago, Illinois and San Francisco, California and have a large team that specializes in cloud consulting & SI, Custom Software Development, Mobile App Development, Artificial Intelligence, and more. The agency was established in 2010.Read More
Clients
RedbullIndustries
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69$10,000+1,000 - 9,999 employeesWarszawa, PolandRead More
Innowise is a global custom software development and IT staff augmentation company headquartered in Warsaw, Poland. Since its foundation in 2007, the company has delivered projects for enterprises and start-ups in finance, healthcare, manufacturing, e-commerce, energy and other domains. They have a team of over 3,000 in-house software engineers.
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TopconIndustries
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70$25,000+50 - 249 employeesPlovdiv, BulgariaRead More
New Line Technologies is a Kharkiv, Ukraine-based software development firm. The midsize agency was established in 2009. Their services include Custom Software Development, IT strategy consulting, Web Development, Mobile App Development, and more.
Clients
Cinamaker – Real-Time Multimedia, United States RegentFE – FinTech, United Kingdom Evan-Moor – Education and E-Learning, United States Kuva – FinTech, United KingdomIndustries
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71$25,000+50 - 249 employeesSunny Isles Beach, FLVelvetech LLC is a midsize software development company. The Sunny Isles Beach, Florida-based company was established in 2004. Their services include Custom Software Development, CRM consulting and SI, Mobile App Development, Web Development, and more.Read More
Clients
Apache CorporationIndustries
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72$50,000+50 - 249 employeesMontréal, CanadaRead More
Custom software development company Spiria was launched in 2003. The agency specializes in Custom Software Development, Enterprise App Modernization, UX/UI Design, IT strategy consulting, and more and has a midsize team. The agency is headquartered in Montréal, Canada; Gatineau, Canada and Toronto, Canada.
Clients
Autodesk Northern Cables Nortac Defence Searidge TechnologiesIndustries
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73$10,000+50 - 249 employeesBratislava, SlovakiaRare Crew, a software development company, is headquartered in Bratislava, Slovakia; Los Angeles, California; Beograd, Serbia and London, England. The company provides Custom Software Development, BI & big data consulting & SI, and Mobile App Development and has a midsize team.The company was founded in 2011.Read More
Clients
IMG AcademyIndustries
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74$25,000+50 - 249 employeesŁódź, PolandIn Łódź, Poland, Happy Team is an IT staff augmentation company. The midsize company was launched in 2015. Their services include IT staff augmentation, Custom Software Development, and Web Development.Read More
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75$50,000+250 - 999 employeesMedellín, ColombiaRead More
Founded in 1995, MVM Ingeniería de Software is a software development firm. The firm focuses on custom software development and business consulting and has a midsize team. The firm is based in Medellin, Colombia.
Clients
XM S.A. E.S.P. - Electric System OperatorIndustries
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76$10,000+50 - 249 employeesVilnius, LithuaniaRead More
RichBrains is a custom software development firm. Established in 2006, the midsize firm is headquartered in Vilnius, Lithuania and Warszawa, Poland. Their services include Custom Software Development, Web Development, cloud consulting & SI, Mobile App Development, and more.
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77$25,000+1,000 - 9,999 employeesLondon, EnglandItransition is a custom software development company founded in 1998. Their large team is located in Denver, Colorado; London, England; Vilnius, Lithuania and Warszawa, Poland and specializes in Custom Software Development, BI & big data consulting & SI, cloud consulting & SI, ERP consulting and SI, and more.Read More
Clients
ExpediaIndustries
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78$10,000+50 - 249 employeesGdańsk, PolandRead More
Digiteum is a custom software development and IT consulting company based in Gdańsk, Poland. A cross-functional team of designers, software architects, engineers, and managers, Digiteum designs and develops digital systems across web, mobile and IoT.
Clients
Adorama CameraIndustries
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79$25,000+250 - 999 employeesAtlanta, GAAI firm HatchWorks AI was launched in 2016. They are based in Atlanta, Georgia; Chicago, Illinois; San José, Costa Rica and Medellín, Colombia and have a midsize team. HatchWorks AI focuses on Artificial Intelligence, AI Consulting, Custom Software Development, and Generative AI.Read More
Clients
AT&TIndustries
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80$50,000+250 - 999 employeesHouston, TXRead More
Softeq is a full-stack development company for web and mobile that’s headquartered in Houston, TX. Founded in 1997, the team of 200+ offers the rare combination of app software and hardware-level expertise – from backends to business intelligence, firmware to IoT (internet of things).
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MicrosoftIndustries
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81$25,000+50 - 249 employeesCollege Station, TXCustom software development company Frogslayer is based in College Station, Texas. The midsize firm was launched in 2005. Their team offers Custom Software Development, Mobile App Development, Application Management & Support, Enterprise App Modernization, and more.Read More
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82$25,000+250 - 999 employeesMaringá, BrazilRead More
DB1 Global Software is a software development company headquartered in Maringa, Brazil and founded in 2000. They have a team of 500 who provide custom software development, UX/UI design, mobile and web development services to mid market clients. They primarily work with clients in the BFSI, tech, and utilities industries.
Clients
EBANXIndustries
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83$100,000+250 - 999 employeesLos Angeles, CAIn Los Angeles, California; Santa Monica, California; New York, New York and San Francisco, California, TheoremOne is a midsize software development company. They focus on Custom Software Development, IT strategy consulting, Business Consulting, IoT development, and more and were founded in 2007.Read More
Clients
AT&TIndustries
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84$25,000+50 - 249 employeesWarszawa, PolandRead More
LeanCode, a mobile application development company, is based in Warszawa, Poland. The midsize agency was launched in 2016. Their services include Mobile App Development, Custom Software Development, and IT strategy consulting.
Clients
Virgin Money Sonova Millennium Bank Credit Agricole Bank PolskaIndustries
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85$75,000+250 - 999 employeesBuenos Aires, ArgentinaHuenei IT Services is a software development firm established in 1995. They are based in Buenos Aires, Argentina; Providencia, Chile; Ciudad de México, Mexico and San Jose, California and have a midsize team. Their services include Custom Software Development, Web Development, Mobile App Development, IT staff augmentation, and more.Read More
Clients
AIGIndustries
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86$5,000+50 - 249 employeesNew York, NYBit by Bit Computer Consultants is a midsize IT managed services company. The New York, New York-based company was established in 1987. Their team offers IT managed services, Cybersecurity, and Custom Software Development.Read More
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87$100,000+250 - 999 employeesMontevideo, UruguayUruit is a Product Design company established in 2007. Their midsize team is headquartered in Montevideo, Uruguay; Buenos Aires, Argentina; São Paulo, Brazil and Envigado, Colombia and focuses on Product Design, Custom Software Development, Web Development, Mobile App Development, and more.Read More
Clients
Corporate: MacmillanIndustries
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88$10,000+250 - 999 employeesBellevue, WARead More
Affirma Consulting is a custom software development firm established in 2001. Their midsize team is in Bellevue, Washington; Ahmedabad, India; Dublin, Ireland and Fayetteville, Arkansas. The firm focuses on Custom Software Development, AI Consulting, Generative AI, Mobile App Development, and more.
Clients
MicrosoftIndustries
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89$50,000+1,000 - 9,999 employeesPraha 8, Czech RepublicAvenga is a software development company. They are headquartered in Praha 8, Czech Republic and have a large team. Their services include Custom Software Development, cloud consulting & SI, IT staff augmentation, Artificial Intelligence, and more. The firm was established in 1992.Read More
Clients
IQVIAIndustries
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90$50,000+250 - 999 employeesNew York, NYMethod is a midsize UX agency. They specialize in UX/UI Design, Custom Software Development, Digital Strategy, Mobile App Development, and more and were launched in 1999. The agency is located in New York, New York; London, England; Santa Clara, California and Charlotte, North Carolina.Read More
Industries
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