Top 100 C# Developers in Warsaw
The Best of December 2025Looking for a top C Sharp software development company in Warsaw?
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 Warsaw. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
List of the Best Warsaw C Sharp (C#) Software Development Companies
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31$50,000+10 - 49 employeesWarszawa, PolandRead More
Iomico, an IoT development company, is in Warszawa, Poland; Sunnyvale, California; Edmonds, Washington and Buenos Aires, Argentina. The small team provides IoT development, Product Design, Custom Software Development, and Mobile App Development. The agency was established in 2012.
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Glomex SrlIndustries
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32$25,000+50 - 249 employeesWarszawa, PolandRead More
Vimanet is a software development company located in Krakow, Poland. Founded in 2007, its team of about 20 specializes in custom software development and web development.
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4subseaIndustries
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33$5,000+250 - 999 employeesWarszawa, PolandSaM Solutions is a Gilching, Germany-based IoT development company. The midsize team specializes in IoT development, IT staff augmentation, Custom Software Development, E-Commerce Development, and more. The agency was established in 1993.Read More
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34$1,000+10 - 49 employeesWarszawa, PolandAsabix is a small website development firm. The Warszawa, Poland-based firm was established in 2017. Their team specializes in Web Development and Custom Software Development.Read More
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SkladUSAIndustries
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35$25,000+250 - 999 employeesWarszawa, PolandFabrity is a software development company launched in 2007. Their midsize team is located in Warszawa, Poland; Rzeszów, Poland; Łódź, Poland and Białystok, Poland. Their services include Custom Software Development, IoT development, Artificial Intelligence, Web Development, and more.Read More
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ABBIndustries
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36$25,000+50 - 249 employeesWarszawa, PolandKevuru 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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37$25,000+250 - 999 employeesWarszawa, PolandEstablished in 2009, ITRex is an artificial intelligence development company. The firm focuses on Artificial Intelligence, BI & big data consulting & SI, Custom Software Development, IoT development, and more and has a midsize team.Read More
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Dollar Shave ClubIndustries
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38$25,000+50 - 249 employeesWarszawa, PolandRead More
Founded in 2018, Qodeca has focused on building management systems, user-facing applications, integrations, and server-side solutions on top of the latest IT solutions from Microsoft like .NET and Azure. With above 70 employees in Poland, they support all software product lifecycle stages by providing UX/UI design, custom software development, cloud, DevOps, and beyond services. They work mainly with middle-market clients and enterprises providing them with the whole toolset required to succeed.
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The Bay Club CompanyIndustries
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39$10,000+10 - 49 employeesWarszawa, PolandRead More
GoOnline is a team of 40+ engineering & design geeks, who help companies of all sizes turn ideas into products that make life easier. The company was founded in 2008; and in the next years, its offices were set up in Kraków, London, Gothenburg, and Copenhagen. They specialize in mobile and desktop app development, web development, business intelligence, AI, IoT, DevOps, and cloud solutions.
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EgmontIndustries
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40Undisclosed50 - 249 employeesWarszawa, PolandRead More
Founded in 2014, IN Team (formerly InFront) is a development firm. Their team of around 50 employees is based in Warsaw, Poland. They focus on custom software development, web development, and IT staff augmentation.
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41$25,000+50 - 249 employeesWarszawa, PolandRead More
Vilmate LLC, an e-commerce development company, is headquartered in Warszawa, Poland; Stockholm, Sweden and Kyiv, Ukraine. The midsize team offers E-Commerce Development, IT strategy consulting, Artificial Intelligence, Custom Software Development, and more and was launched in 2012.
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GetCompliantIndustries
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42$25,000+10 - 49 employeesPruszków, PolandEstablished in 2009, JMR is a website development company. The small Pruszków, Poland-based team focuses on Web Development, BI & big data consulting & SI, IT staff augmentation, Custom Software Development, and more.Read More
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43$10,000+50 - 249 employeesWarszawa, PolandRead More
Team Connect Ltd. Is a software development firm in Warszawa, Poland and Gliwice, Poland. Established in 2008, the midsize team specializes in custom software development, IT staff augmentation, IT managed services, enterprise app modernization, and more.
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SantanderIndustries
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44Undisclosed2 - 9 employeesWarszawa, PolandRead More
FlyHigh.PRO is a small web development company based in Warszawa, Poland. They specialize in web development, custom software development, and web design and were founded in 2010.
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EcoVadis SASIndustries
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45$10,000+50 - 249 employeesWarszawa, PolandRead More
DDI Development is a custom web and mobile development company with offices in Tallinn, Estonia; Kharkiv, Ukraine; and New York. Founded in 2007, they employ 73 industry professionals who specialize in digital development for small and midmarket businesses. Services include the development of custom software and applications, mobile and web apps, and databases.
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Notesmaster,Industries
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46$5,000+50 - 249 employeesWarszawa, PolandRead More
9BITS is a software developer based in Warsaw, Poland. Established in 2009, they have more than 100 employees that cater to small–midmarket clientele. They offer custom software development, mobile app development, and e-commerce development services.
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UnileverIndustries
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47$10,000+250 - 999 employeesT'bilisi, GeorgiaFounded in 2008, SoftTeco is a custom software development company. The agency focuses on Custom Software Development, Mobile App Development, Web Development, UX/UI Design, and more and has a midsize team. The agency is located in Kaunas, Lithuania; Wenham, Massachusetts; Vilnius, Lithuania and T'bilisi, Georgia.Read More
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Raiffeisen Bank The World Bank Millennium Bank VolkswagenIndustries
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48$50,000+50 - 249 employeesWarszawa, PolandMainsoft is a custom software development company founded in 2010. Their midsize team is located in Warszawa, Poland. Their services include Custom Software Development, Web Development, Artificial Intelligence, IT staff augmentation, and more.Read More
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S2 tikshuv LTDIndustries
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49$10,000+50 - 249 employeesWarszawa, PolandLocated in Batumi, Georgia and Warszawa, Poland, LINKERSOFT GROUP is a software development firm. The midsize agency was launched in 2017. Their services include Custom Software Development, IT staff augmentation, Web Development, Artificial Intelligence, and more.Read More
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50$5,000+50 - 249 employeesWarszawa, PolandRead More
CROSS sp. z o.o. is a software development company headquartered in Warsaw, Poland, with an additional office in Opole, Poland. Founded in 1988, the 6-person team specializes in custom software development, financial accounting, and blockchain.
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PGNiG SAIndustries
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51$50,000+10 - 49 employeesWarszawa, PolandCODEVENOM - old SkillsForge is a custom software development company founded in 2022. They are headquartered in Warszawa, Poland and have a small team. The company specializes in Custom Software Development, Web Development, Mobile App Development, Wearable App Development, and more.Read More
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52$10,000+10 - 49 employeesWarszawa, PolandRead More
Prognetics is a software company founded in 2020 with fewer than 10 employees. They offer custom software, web, and mobile app development solutions to various clients from their office in Warsaw, Poland. They work in the fields of consumer products and business services.
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53$25,000+10 - 49 employeesWarszawa, PolandPRAS is a website development company. The small Warszawa, Poland-based company was established in 2011. Their team focuses on Web Development, UX/UI Design, Custom Software Development, Enterprise App Modernization, and more.Read More
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54$10,000+10 - 49 employeesWarszawa, PolandRead More
JMMJ is a custom software development company based in Warsaw, Poland. Founded in 2008, they have 22 employees specializing in mobile and web technology, including AI, augmented reality, and machine learning. Working for small businesses, midmarket companies and global enterprises, they offer blockchain solutions, mobile and web app development, and Cloud control.
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MicrosoftIndustries
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55$10,000+50 - 249 employeesWarszawa, PolandAI company FTECH-IT was founded in 2019. The midsize team specializes in Artificial Intelligence, Custom Software Development, IT staff augmentation, IT strategy consulting, and more. The firm is headquartered in Warszawa, Poland.Read More
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56$1,000+10 - 49 employeesAlexandria, VAIn Claymont, Delaware; Alexandria, Virginia and Warszawa, Poland, Atomic Actions is a small Robotics Process Automation company. They provide Robotics Process Automation, Custom Software Development, Artificial Intelligence, Low/No Code Development, and more and were established in 2024.Read More
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57$1,000+10 - 49 employeesWarszawa, PolandRead More
Website development firm 8 Bits Further was founded in 2020. Headquartered in Warszawa, Poland, their small team specializes in web development, custom software development, mobile app development, and ux/ui design.
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58Undisclosed1,000 - 9,999 employeesWrocław, PolandRead More
SpyroSoft is an IT company based in Wroclaw, Poland with offices in Krakow, Poland and London. Founded in 2016, the team of 143 specializes in IT staff augmentation, custom software development, and web design. They focus on business services, automotive, and financial services.
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DeloitteIndustries
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59$50,000+50 - 249 employeesWarszawa, PolandRead More
Founded in 2006, Vector Software Ltd is an IT outsourcing company based in L'viv, Ukraine. They have more than 50 employees that specialize in application testing and development. They mostly work with mid-market and small businesses.
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Stingray - Optical delousing solutions for fishing industry;Industries
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60$10,000+250 - 999 employeesWarszawa, PolandRead More
Inspeerity is a software developer in Białystok, Poland. Founded in 2018, they have about 37 employees that serve mostly midmarket and small-business clients in the IT, financial, and telecommunications sectors. Services include web, e-commerce, and custom software development.
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DA SystemsIndustries
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