Top 100 C# Developers in Warsaw
The Best of November 2026Looking 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$10,000+250 - 999 employeesWarszawa, PolandInstinctools is a midsize software development company established in 2000. Their team provides Custom Software Development, Artificial Intelligence, BI & big data consulting & SI, Mobile App Development, and more. The company is headquartered in Stuttgart, Germany; Warszawa, Poland; Mississauga, Canada and Wilmington, Delaware.Read More
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Daimler Fujitsu Nostrum SpexAIIndustries
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32$50,000+50 - 249 employeesWarszawa, PolandRelevant Software, a software development firm, is in L'viv, Ukraine; Warszawa, Poland and Ademuz, Spain. The midsize firm was launched in 2013. Their services include Custom Software Development, IoT development, IT staff augmentation, Web Development, and more.Read More
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33$10,000+50 - 249 employeesWarszawa, PolandAI Consulting company Brights is located in Warszawa, Poland; Kyiv, Ukraine and New York, New York. The midsize team provides AI Consulting, Custom Software Development, Enterprise App Modernization, UX/UI Design, and more and was established in 2011.Read More
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Philip Morris Suzuki Microsoft DanoneIndustries
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34$10,000+250 - 999 employeesWarszawa, PolandEstablished in 1997, Elinext is a custom software development firm. The midsize team provides Custom Software Development, Mobile App Development, Application Testing, Web Development, and more. The firm is headquartered in Warszawa, Poland; Тоshkent, Uzbekistan; Ho Chi Minh City, Vietnam and T'bilisi, Georgia.Read More
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Parrot Broadcom Volkswagen Venna Insurance GroupIndustries
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35$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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36$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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37$25,000+50 - 249 employeesWarszawa, PolandFounded in 2017, SevenPro is an IT staff augmentation company. Their midsize team is headquartered in Kyiv, Ukraine; New York, New York; Tallinn, Estonia and Calgary, Canada. Their team offers IT staff augmentation, Custom Software Development, Web Development, and Mobile App Development.Read More
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38$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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39$25,000+10 - 49 employeesWarszawa, PolandAppstronauts, an IT staff augmentation company, was launched in 2014. The small Warszawa, Poland-based team offers IT staff augmentation, Custom Software Development, Artificial Intelligence, CRM consulting and SI, and more.Read More
Clients
Solutions30Industries
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40$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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41$25,000+50 - 249 employeesWarszawa, PolandLocated in Warszawa, Poland; Stockholm, Sweden and Kyiv, Ukraine, Vilmate LLC is an e-commerce development firm. The midsize agency was established in 2012. Their team specializes in E-Commerce Development, IT strategy consulting, Artificial Intelligence, Custom Software Development, and more.Read More
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GetCompliantIndustries
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42Undisclosed50 - 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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43$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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44$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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45Undisclosed2 - 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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46$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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47$25,000+250 - 999 employeesWarszawa, PolandITRex is a midsize artificial intelligence development company. They focus on Artificial Intelligence, BI & big data consulting & SI, AI Consulting, Custom Software Development, and more and were established in 2009.Read More
Clients
Dollar Shave ClubIndustries
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48$25,000+50 - 249 employeesWarszawa, PolandBased in Warszawa, Poland, 10Clouds Financial Institutions is an AI company. The midsize company was launched in 2022. Their services include Artificial Intelligence, IT strategy consulting, AI Consulting, Generative AI, and more.Read More
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49$10,000+250 - 999 employeesWarszawa, PolandHeadquartered in Warszawa, Poland; Wenham, Massachusetts; Vilnius, Lithuania and T'bilisi, Georgia, SoftTeco is a software development firm. The firm provides Custom Software Development, Mobile App Development, Web Development, UX/UI Design, and more and is midsize.The firm was established in 2008.Read More
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Raiffeisen Bank The World Bank Millennium Bank VolkswagenIndustries
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50$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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51$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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52$5,000+50 - 249 employeesWarszawa, PolandYour ITeams is a midsize IT staff augmentation company. The Warszawa, Poland-based firm was founded in 2021. Their services include IT staff augmentation, Custom Software Development, CRM consulting and SI, and Recruiting.Read More
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53$10,000+50 - 249 employeesWarszawa, PolandIT staff augmentation company Ftech-it is located in Warszawa, Poland. Launched in 2019, the midsize team offers IT staff augmentation, Artificial Intelligence, Custom Software Development, IT strategy consulting, and more.Read More
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54$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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Steppsy -
55$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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56$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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57$25,000+10 - 49 employeesWarszawa, PolandCODEVENOM - old SkillsForge, a small custom software development firm, is based in Warszawa, Poland. Launched in 2022, the team focuses on Custom Software Development, Web Development, Mobile App Development, Cybersecurity, and more.Read More
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58$1,000+10 - 49 employeesWarszawa, PolandIn 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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59$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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60$10,000+50 - 249 employeesWarszawa, PolandARDURA Consulting is an IT staff augmentation company. Launched in 2015, the team provides IT staff augmentation, Custom Software Development, Application Testing, and IT strategy consulting. Their midsize company is located in Warszawa, Poland and New York, New York.Read More
Clients
Santander Bank Polska S.A.Industries
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