Top 90 C# Developers in Warsaw

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Top 90 C# Developers in Warsaw

The Best of March 2024

Looking 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. 

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List of the Best Warsaw C Sharp (C#) Software Development Companies

  • 1
    (40 Reviews) 4.9
    • Timeliness

      4.7
    • Service Excellence

      4.9
    • Value

      4.6
    • Would Recommend

      4.9
    • $50,000+
    • 1,000 - 9,999 employees
    • Warszawa, Poland

    Software Mind is a global IT services company headquartered in Krakow, Poland, with offices in Warsaw, Rzeszow, and Bielsko-Biala in Poland as well. Founded in 1999, their team of 116 works with clients from startups to enterprises to offer assistance in custom software development, enterprise app modernization, and BI & big data consulting & SI. They mainly work in the medical and financial services industries.

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    Clients

    • Corelogic
    • Dell
    • Backbase
    • Branch

    Industries

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  • 2
    (32 Reviews) 4.9
    • Timeliness

      4.6
    • Service Excellence

      4.9
    • Value

      4.3
    • Would Recommend

      5.0
    • $50,000+
    • 1,000 - 9,999 employees
    • Warszawa, Poland

    Sigma Software Group is a software development & consulting partner with headquarters in Lviv, Ukraine, and offices in the USA, Sweden, UK, Canada, Israel, Singapore, UAE, Poland, Latin America, and Portugal. Founded in 2002, the company accounts for over 2000 employees, helping clients from startups to Fortune 500 brands with software product and custom solutions delivery, digital transformation, Big Data, AI/ML, AR/VR, IoT, web & app development services.

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    Clients

    • Volvo
    • Scania AB
    • KnorrBremse
    • AstraZeneca

    Industries

  • 3
    (4 Reviews) 5.0
    • Timeliness

      5.0
    • Service Excellence

      5.0
    • Value

      5.0
    • Would Recommend

      5.0
    • $50,000+
    • 250 - 999 employees
    • Warszawa, Poland

    Founded in 2011, Trinetix Inc. Is a custom software development company. Their midsize team is in Wilmington, Delaware; Kyiv, Ukraine and Kyiv, Ukraine. Their team focuses on custom software development, cloud consulting & SI, enterprise app modernization, mobile app development, and more.

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    Clients

    • Big 4 Accounting firms
    • McDonald's
    • 360 view
    • Sage Freight

    Industries

  • 4
    (22 Reviews) 4.7
    • Timeliness

      4.5
    • Service Excellence

      4.7
    • Value

      4.4
    • Would Recommend

      4.7
    • $10,000+
    • 250 - 999 employees
    • Warszawa, Poland

    Scalo is a software solutions company based in Wroclay, Poland. The company, founded in 2007, has around 500 employees and provides custom software development, IT staff augmentation, web development, application testing, and IT strategy consulting services. Scalo serves mid-market and other-sized companies in various industries that include financial services, IT, and manufacturing.

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    Clients

    • Change Donations
    • ELSA
    • Satori Analytics
    • ING

    Industries

  • 5
    (55 Reviews) 4.9
    • Timeliness

      4.9
    • Service Excellence

      4.9
    • Value

      4.7
    • Would Recommend

      4.9
    • $25,000+
    • 250 - 999 employees
    • Warszawa, Poland

    KitRUM is a software engineering company that was founded in 2014. The company is headquartered in Clearwater, Fla., with secondary locations in Krakow, Poland and Kharkov, Ukraine. They are made up of 49 employees. They specialize in AR/VR development, IoT development, and mobile app development. 

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    Clients

    • Brands choose us because of our distributed nearshore engineering teams who rock in designing pixel-perfect UI
    • architecture
    • scalable web systems and mobile apps development with thousands of downloads. Our clients are a mix of Fortune enterprises
    • newly born VC-backed startups

    Industries

  • 6
    (7 Reviews) 4.9
    • Timeliness

      4.7
    • Service Excellence

      4.9
    • Value

      4.2
    • Would Recommend

      4.9
    • $25,000+
    • 1,000 - 9,999 employees
    • Warszawa, Poland

    Ailleron S.A., a digital strategy company, is in Kraków, Poland. The midsize firm was established in 2014. Their team focuses on digital strategy, enterprise app modernization, mobile app development, custom software development, and more.

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    Industries

  • 7
    (10 Reviews) 5.0
    • Timeliness

      4.9
    • Service Excellence

      5.0
    • Value

      5.0
    • Would Recommend

      5.0
    • $10,000+
    • 50 - 249 employees
    • Warszawa, Poland

    Lightpoint Global is a development company with 41 employees that is based in Minsk, Belarus. Since being founded in 2011, they have focused on web development, big data consulting, and cloud consulting. They work with both small and mid market businesses in mainly media, education, and financial services. 

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    Clients

    • Lufthansa
    • Adidas
    • Boeing
    • Santander

    Industries

  • 8
    (43 Reviews) 4.9
    • Timeliness

      4.8
    • Service Excellence

      4.9
    • Value

      4.7
    • Would Recommend

      4.9
    • $50,000+
    • 50 - 249 employees
    • Warszawa, Poland

    Brainhub is a software development partner for startups, scaleups and enterprises with ambitious product development plans. Founded in 2014, Brainhub is a team of 95 experts in Node.js, ReactJS, .NET, TypeScript and React Native that helped 65+ fintech, edtech, martech, healthcare and gamedev companies scale their web and mobile app development. Recognized as one of the fastest growing companies in Europe by Financial Times, Deloitte and Forbes.

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    Clients

    • National Geographic
    • Paradox Interactive
    • TC Global
    • Collegial

    Industries

  • 9
    (3 Reviews) 4.7
    • Timeliness

      4.3
    • Service Excellence

      4.7
    • Value

      4.8
    • Would Recommend

      4.8
    • $1,000+
    • 10 - 49 employees
    • Warszawa, Poland

    StoryMode is a game development studio in Minsk, Belarus. Founded in 2018, they have about 15 employees that serve mostly small-business clients in the gaming industry. Services include custom software, mobile app, and AR/VR development.

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    Clients

    • Saber Interactive
    • Focus Home Interactive
    • Gasket Games
    • Ingame Studios

    Industries

  • 10
    (27 Reviews) 4.8
    • Timeliness

      4.8
    • Service Excellence

      4.8
    • Value

      4.6
    • Would Recommend

      4.8
    • $25,000+
    • 250 - 999 employees
    • Warszawa, Poland

    Altkom Software & Consulting, founded in 1998, is a software development company headquartered in Warsaw, Poland, with an additional office in Krakow, Poland. They specialize in custom software development, web development, and application management & support. The company has 130+ employees who work with enterprise, mid-market, and small businesses. The businesses they serve are mostly in the financial services industry. 
     

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    Clients

    • BNP Paribas
    • AXA Insurance
    • Santander
    • Danone

    Industries

  • 11
    (4 Reviews) 4.8
    • Timeliness

      4.6
    • Service Excellence

      4.8
    • Value

      3.8
    • Would Recommend

      5.0
    • $50,000+
    • 1,000 - 9,999 employees
    • Warszawa, Poland

    Pentalog is a large Brașov, Romania-based custom software development company. Established in 1993, the team offers custom software development, IT staff augmentation, e-commerce development, and web development.

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    Clients

    • Adidas
    • Ubisoft
    • SumUp
    • Rakuten

    Industries

  • 12
    (15 Reviews) 4.9
    • Timeliness

      4.8
    • Service Excellence

      4.9
    • Value

      4.7
    • Would Recommend

      5.0
    • $25,000+
    • 50 - 249 employees
    • Warszawa, Poland

    Launched in 2018, Reenbit is a software development company. They are based in L'viv, Ukraine and have a small team. Their services include custom software development, cloud consulting & SI, web development, enterprise app modernization, and more.

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    Clients

    • CloudBooking
    • Norwegian Refugee Council
    • Brands of Scandinavia
    • Sensoscientific

    Industries

  • 13
    (67 Reviews) 4.8
    • Timeliness

      4.7
    • Service Excellence

      4.8
    • Value

      4.6
    • Would Recommend

      4.9
    • $50,000+
    • 1,000 - 9,999 employees
    • Warszawa, Poland

    Avenga is a global IT and digital transformation consultancy with over 20 years of experience for verticals such as pharma & life science, insurance and finance. Avenga has more than 2500 professionals with offices in Germany, Poland, Ukraine, the U.S., and Malaysia. Services include digital strategy & CX, custom software development, staffing, as well as Salesforce consulting, big data, and cloud solutions.

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    Clients

    • IQVIA
    • GSK
    • QPharma
    • Roche

    Industries

  • 14
    (39 Reviews) 4.9
    • Timeliness

      4.9
    • Service Excellence

      4.9
    • Value

      4.8
    • Would Recommend

      5.0
    • $25,000+
    • 1,000 - 9,999 employees
    • Warszawa, Poland

    Founded in 1998 in Denver, Itransition now has multiple offices in the U.S., U.K., E.U., and locations in eastern Europe housing more than 2,200 employees. They help power enterprises and SMBs globally with their digital solutions in the areas of business process automation, AI, data analytics, customer experience, and others. 

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    Clients

    • Expedia
    • Xerox
    • Toyota
    • eBay

    Industries

  • 15
    (33 Reviews) 4.8
    • Timeliness

      4.5
    • Service Excellence

      4.8
    • Value

      4.3
    • Would Recommend

      4.9
    • $25,000+
    • 250 - 999 employees
    • Warszawa, Poland

    Altoros is a software development company in Warsaw, Poland. Founded in 2001, Altoros' team of over 350 employees specializes in cloud consulting, BI & big data consulting, blockchain and artificial intelligence services. 

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    Clients

    • Allstate
    • Siemens
    • Huawei
    • Toyota

    Industries

  • 16
    (9 Reviews) 4.6
    • Timeliness

      4.3
    • Service Excellence

      4.6
    • Value

      4.3
    • Would Recommend

      4.6
    • $25,000+
    • 250 - 999 employees
    • Warszawa, Poland

    K2 Digital Products is a digital firm based in Warsaw, Poland with more than 50 employees. They have provided UX/UI design, e-commerce development, and product design solutions to clients ranging from small companies to large firms.

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    Clients

    • ABB
    • Bayer
    • Carrefour
    • PKO BP

    Industries

  • 17
    (33 Reviews) 4.8
    • Timeliness

      4.7
    • Service Excellence

      4.8
    • Value

      4.5
    • Would Recommend

      4.9
    • $250,000+
    • 250 - 999 employees
    • Warszawa, Poland

    JCommerce is a software company based in Katowice, Poland, with offices in six other cities in Poland. Founded in 2005, the team of 318 specializes in custom software development, IT staff augmentation, and BI and big data consulting and SI. They work primarily with midmarket, focusing on information technology, manufacturing, and financial services.

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    Clients

    • Aras Corp
    • Backbase
    • Boozt
    • Bystronic

    Industries

  • 18
    (12 Reviews) 5.0
    • Timeliness

      5.0
    • Service Excellence

      5.0
    • Value

      4.9
    • Would Recommend

      5.0
    • $50,000+
    • 50 - 249 employees
    • Warszawa, Poland

    MITRIX, founded in 2017, is a Poland-based team of 65+ senior tech professionals from Eastern Europe, carefully selected from the top 2%. Operating seamlessly across US and European time zones, they prioritize transparency, accountability, and client support. Explore their services risk-free with a 2-week trial.
     

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    Clients

    • Synapse Health
    • TicketVault
    • ViaPoint
    • Academic Gateway

    Industries

  • 19
    (10 Reviews) 4.7
    • Timeliness

      5.0
    • Service Excellence

      4.7
    • Value

      4.7
    • Would Recommend

      4.9
    • $50,000+
    • 1,000 - 9,999 employees
    • Warszawa, Poland

    Infopulse is an end-to-end digital services and advisory company based in Ukraine with additional offices across Europe and the Americas. Founded in 1991, their team of 2,300+ specialists offers solution engineering, managed services, innovation services, digital experience & intelligent business solutions. They work with SMBs and Fortune 100 enterprises, focusing on banking, energy, oil & gas, healthcare, telecom, information technology, and other industries.

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    Clients

    • BICS
    • Vodafone
    • Bosch
    • Metinvest

    Industries

  • 20
    (61 Reviews) 4.8
    • Timeliness

      4.7
    • Service Excellence

      4.8
    • Value

      4.6
    • Would Recommend

      4.9
    • $25,000+
    • 250 - 999 employees
    • Warszawa, Poland

    Software engineering and IT consulting company Yalantis has development centers across Europe. Founded in 2008, the team of over 500 employees is fluent in IoT, AI, machine learning, business intelligence, data analytics, and more.

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    Clients

    • KPMG
    • Zillow
    • Toyota Tsusho
    • Home Connect for Bosch

    Industries

  • 21
    (9 Reviews) 4.8
    • Timeliness

      4.7
    • Service Excellence

      4.8
    • Value

      4.9
    • Would Recommend

      4.8
    • $25,000+
    • 50 - 249 employees
    • Warszawa, Poland

    Ideo Agency is a full-service software house based in Rzeszów, Poland with offices in Warsaw, Poland, and Drammen, Norway. Since its start in 1999, their team of more than 50 has provided custom software development, web development, e-commerce development, and digital design and marketing services.

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    Clients

    • Aarsleff Ground Engineering
    • Arcelor Mittal
    • Barilla
    • Bien Air

    Industries

  • 22
    (37 Reviews) 4.8
    • Timeliness

      4.8
    • Service Excellence

      4.8
    • Value

      4.4
    • Would Recommend

      4.8
    • $5,000+
    • 250 - 999 employees
    • Warszawa, Poland

    ​​​​​ScienceSoft is a software development and IT consulting company located in the US, Europe and the Middle East. The company was founded in 1989. The team of 700+ IT experts provides services for all-around enterprise IT management: web, mobile and desktop app development; IT infrastructure management; L1-L3 support; testing; cybersecurity. They work with startups, mid-market and enterprise clients, including Fortune 500 companies, in healthcare, finance, retail, and other business domains.

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    Clients

    • Ford Motor Company
    • Deloitte
    • eBay
    • Walmart

    Industries

  • 23
    (56 Reviews) 4.9
    • Timeliness

      4.8
    • Service Excellence

      4.9
    • Value

      4.7
    • Would Recommend

      4.9
    • $10,000+
    • 1,000 - 9,999 employees
    • Warszawa, Poland

    Innowise Group is a custom software development company based in Warsaw, Poland. With more than 1000 specialists on board and 600 projects completed, they use cutting-edge technologies to transform their client's businesses. They are experts in designing and developing tech solutions that will help your company enhance its processes and increase customer satisfaction, thanks to their 15+ years of experience and extensive expertise. They create custom software to fit your unique requirements in terms of timeline, budget, and use case. They handle every step of the development process, from product concept and development to testing, deployment, and support. In addition to building custom software, we also excel in UX/UI design, IT strategy consulting, and staff augmentation.

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    Clients

    • Topcon
    • BMW
    • N:aip
    • OneStop Pro

    Industries

  • 24
    (22 Reviews) 4.6
    • Timeliness

      4.5
    • Service Excellence

      4.6
    • Value

      4.5
    • Would Recommend

      4.6
    • $10,000+
    • 250 - 999 employees
    • Warszawa, Poland

    *instinctools is a software product development and consulting company headquartered in Germany and USA, with development hubs in Poland and Kazakhstan. Founded in 2000 with 350+ employees on board now, *instinctools’ provides Product software development, BI and Big Data, Cloud, UX Design, Web & Mobile development, and Innovation consulting services. Their global delivery model reduces development costs while increasing speed to market.

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    Clients

    • Daimler
    • Fujitsu
    • Haver & Boecker
    • Burda Digital

    Industries

  • 25
    (11 Reviews) 5.0
    • Timeliness

      4.8
    • Service Excellence

      5.0
    • Value

      5.0
    • Would Recommend

      5.0
    • $10,000+
    • 10 - 49 employees
    • Warszawa, Poland

    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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    Clients

    • Egmont
    • GoGift
    • CEZ Group
    • Skanska

    Industries

  • 26
    (17 Reviews) 4.9
    • Timeliness

      5.0
    • Service Excellence

      4.9
    • Value

      4.9
    • Would Recommend

      5.0
    • $25,000+
    • 50 - 249 employees
    • Warszawa, Poland

    Existek is a full-cycle software development and outsourcing firm based in Vinnitsa, Ukraine. They were established in 2012, and have 13 employees. Existek's services include web development, custom software development, IT staff augmentation, and more.

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    Clients

    • Lingit AS
    • IntelliChief
    • Spellex
    • Engage Works

    Industries

  • 27
    (17 Reviews) 5.0
    • Timeliness

      4.9
    • Service Excellence

      5.0
    • Value

      4.9
    • Would Recommend

      5.0
    • $10,000+
    • 50 - 249 employees
    • Warszawa, Poland

    LeanCode is a software studio founded in 2016 and based in Warsaw, Poland. With more than 10 members in their team, they specialize in custom software, web, and mobile app development services for clients in the fields of education, transportation, and consumer products.

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    Clients

    • Credit Agricole Bank
    • Shell
    • Innogy
    • Maspex

    Industries

  • 28
    (11 Reviews) 4.6
    • Timeliness

      4.4
    • Service Excellence

      4.6
    • Value

      4.2
    • Would Recommend

      4.8
    • $25,000+
    • 250 - 999 employees
    • Warszawa, Poland

    ITMAGINATION is a technology services company in Warsaw, Poland with more than 400 employees. Established in 2008, they do customer software development, web development, and BI and big data consulting. ITMAGINATION primarily serves midmarket–enterprise clients in the financial services, business services, and utilities sectors.

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    Clients

    • American Express (previously Kabbage)
    • Greenlight
    • BNP Paribas
    • L'Oréal

    Industries

  • 29
    (3 Reviews) 5.0
    • Timeliness

      5.0
    • Service Excellence

      5.0
    • Value

      5.0
    • Would Recommend

      5.0
    • $10,000+
    • 50 - 249 employees
    • Warszawa, Poland

    Eyzee is a custom software development company. The midsize Warszawa, Poland-based agency was established in 2017. Their services include custom software development, enterprise app modernization, cloud consulting & SI, application testing, and more.

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    Clients

    • Ministry of Digital Affairs Republic of Poland
    • Ministry of Finance Republic of Poland
    • e-Health Centre

    Industries

  • 30
    (36 Reviews) 4.9
    • Timeliness

      4.8
    • Service Excellence

      4.9
    • Value

      4.9
    • Would Recommend

      5.0
    • $10,000+
    • 50 - 249 employees
    • Warszawa, Poland

    AVRspot is an AR/VR studio based in New York with an office in Lviv, Ukraine. Founded in 2015, AVRspot's team of nearly 15 employees primarily offers AR/VR development, but can also provide graphic design services.

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    Clients

    • PWC
    • Jaguar
    • Audi
    • Nike

    Industries

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