Top 50 C# Developers in Warsaw

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Top 50 C# Developers in Warsaw

May 2022

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
    • Scheduling

      4.6
    • Quality

      4.7
    • Cost

      4.4
    • NPS

      4.8
    Read Full Reviews on Clutch Visit Site
    • $25,000+
    • 250 - 999 employees
    • Warszawa, Poland

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

    Clients

    • Allstate
    • Siemens
    • Huawei
    • Toyota

    Industries

    Notable Project

    Altoro was hired by a software company to build a custom solution that could connect the client's tools with different types of applications. Key technologies used were .NET and React.

    "They had a lot of people with skills that matched our requirements."

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  • 2
    • $250,000+
    • 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.

    Clients

    • Corelogic
    • Dell
    • Backbase
    • CallCredit

    Industries

    Notable Project

    A software company needed to scale up their product development team with experts. Software Mind provided a pool of resources and delivered custom development work using JavaScript and other languages.

    "They stood out for their ability to deliver technology."

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  • 3
    • Scheduling

      4.8
    • Quality

      4.8
    • Cost

      4.8
    • NPS

      4.9
    Read Full Reviews on Clutch Visit Site
    • $25,000+
    • 50 - 249 employees
    • Warszawa, Poland

    Brainhub is a JavaScript software development company that builds web, desktop, and mobile applications. With headquarters in Gliwice, Poland and offices in Warsaw, Cracow and Bielsko Biala, Brainhub has a team of 40+. They work with teams to build products from scratch using core JS technologies: React, Electron, React Native and Node.js.

    Clients

    • National Geographic
    • Paradox Interactive
    • TC Global
    • Collegial

    Industries

    Notable Project

    A stealth startup hired Brainhub to augment their existing team and help with the development of a complex site. They provided two software engineers who studied the firm's processes and existing codebase.

    "The Brainhub team was known for their JavaScript expertise."

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  • 4
    • Scheduling

      4.8
    • Quality

      4.6
    • Cost

      4.5
    • NPS

      4.8
    Read Full Reviews on Clutch Visit Site
    • $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.

    Clients

    • Roche
    • GSK
    • Credit Suisse
    • Trov

    Industries

    Notable Project

    Avenga enhances software development capabilities by providing developers and program managers. Following documentation, they use Node.js, GraphQL, and React to build a web app and Swift to build an iOS app.

    "I'm impressed by their ability to scale and bring high-quality individuals into development processes and teams."

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  • 5
    • Scheduling

      4.8
    • Quality

      4.8
    • Cost

      4.8
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $10,000+
    • 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. 

    Clients

    • Expedia
    • Xerox
    • Toyota
    • eBay

    Industries

    Notable Project

    Itransition provides AR app development services for a gaming company. The team works on conceptual planning, development, and testing.

    "We’ve never been able to match the talent we get at Itransition anywhere else in the world."

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  • 6
    • $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.

    Clients

    • Kabbage
    • Greenlight
    • BNP Paribas
    • L'Oréal

    Industries

    Notable Project

    ITMAGINATION is working on making enhancements to a POS platform using DynamoDB, MySQL, and ElastiCache. The team has also done mobile development work using Swift and Java for iOS and Android respectively.

    "The team’s knowledge, work ethic, and professionalism are all very impressive."

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  • 7
    • Scheduling

      4.6
    • Quality

      4.8
    • Cost

      4.5
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $5,000+
    • 1,000 - 9,999 employees
    • Warszawa, Poland

    Euvic is an IT service provider specializes in custom software development, mobile app development, and web development. They were founded in 2004 in Gliwice, Poland, and have satellite offices in Warsaw, Leverkusen, Germany, Katowice, Poland, and Bielsko-Biala, Poland, and Mahwah, New Jersey.  They have a large team of around 350 employees who primarily service midmarket and small business clients. 

    Clients

    • Arbor Seed Consulting
    • Energa
    • LexisNexis
    • Geant

    Industries

    Notable Project

    Euvic developed a small-scale desktop application for commodity traders in the British market. Over time, their work expanded to provide additional features and functionalities for their development product. 

    "[Euvic] has proven easy to do business with which is a major benefit." – Owner, Commodity Trading Software Company 

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  • 8
    • $10,000+
    • 250 - 999 employees
    • Warszawa, Poland

    Instinctools is a prominent software development and IT services firm based in Stuttgart, Germany with an additional office in Belarus. Founded in 2000, they have over 200 employees and provide sophisticated software engineering support, including custom software development, web and mobile development, and data-driven business intelligence.

    Clients

    • Swiss Red Cross
    • Daimler
    • Fujitsu
    • SAP

    Industries

    Notable Project

    *instinctools provides ERP customization for a tv services and media company. They help the client with Odoo ERP software integration to match and connect with BI tools for analytics and data visualization.

    "They are very responsive and effective in customizing the system, trying to engineer and offer the best fit solution."

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  • 9
    • Scheduling

      4.7
    • Quality

      5.0
    • Cost

      4.9
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • Undisclosed
    • 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.

    Clients

    • Egmont
    • GoGift
    • CEZ Group
    • Skanska

    Industries

    Notable Project

    GO ONLINE developed a custom data storage platform for an event planning company. The platform served as a repository for the client’s past event data, contact details, and other information.

    “GO ONLINE did everything we needed them to do.”

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

    Devox Software is a software development company that was founded in 2017 and is based in Kyiv, Ukraine. They comprise of 20 employees specializing in full-cycle software development for small, mid-size, and large companies in real estate, e-commerce, fintech, digital media, and advertising. Services include IT staffing, staff augmentation, outsourcing, and web development and design.

    Clients

    • Function4
    • Optherium
    • Multilogin
    • Eurolinx

    Industries

    Notable Project

    A batteries manufacturer hired Devox Software to design and develop their website's frontend dashboard experience in Angular. The team also integrated the API calls to fetch data from the client's backend.

    "Their intuition about the product and their willingness to try new approaches were impressive."

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  • 11
    • $25,000+
    • 50 - 249 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. 
     

    Clients

    • Insurance: Credit Agricole Assurance
    • Allianz Partners
    • AXA Partners
    • AXA Ubezpieczenia

    Industries

    Notable Project

    Altkom Software & Consulting performed an AWS review and analysis for a sports data agency. They examined the client's cloud security practices, governance automation, and cost optimization, among other things.

    "We appreciated their flexible and open-minded approach, resulting in maximized advantages for the agreed audit effort."

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  • 12
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      4.9
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $25,000+
    • 250 - 999 employees
    • Warszawa, Poland

    Custom software development company Elinext is a global company with offices around the world in New York, NY, Ireland, Germany, Belarus, and more. The team of nearly 200 has been around since 1997 and serve a range of clients from startups to Fortune 500 companies. They provide custom software, mobile app, web, and IoT development, as well as UI/UX design.

    Clients

    • Broadcom
    • Parrot
    • Siemens
    • Trumpf

    Industries

    Notable Project

    Elinext completed the frontend, backend, and database development for a web application that provides instructional coaching and classroom evaluation software. After completing the initial scope, they were retained for development and support.

    "Elinext's project management is best of class and their quality of work is first rate."

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  • 13
    • Scheduling

      4.5
    • Quality

      4.6
    • Cost

      4.5
    • NPS

      4.9
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    • $25,000+
    • 10 - 49 employees
    • Warszawa, Poland

    JMR Technologies is a software house based in Warsaw, Poland. Founded in 2009, they have approximately 16 employees who serve midmarket and small business clients across industries. Services include web development, custom software development, and mobile app development.

    Industries

    Notable Project

    A real estate firm hired JMR Technologies for their staff augmentation services. The team provided programmers to help build new components on the client's platform and assist with other development projects.

    "They were serious about their work, and they never hesitated to ask us questions."

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  • 14
    • Scheduling

      4.9
    • Quality

      4.9
    • Cost

      4.8
    • NPS

      4.9
    Read Full Reviews on Clutch Visit Site
    • $10,000+
    • 10 - 49 employees
    • Warszawa, Poland

    Appstronauts is a mobile app development company that was founded in 2015. They are headquartered in Warsaw, Poland with another location in Manchester, U.K. The company is made up of 11 employees and specializes in mobile app development, custom software development, and IT strategy consulting. Their client focus is small businesses, primarily in the business services, consumer products, and education industries.

    Clients

    • Solutions30
    • OTIS
    • Decathlon
    • Agora

    Industries

    Notable Project

    Appstronauts developed a mobile app for an events finder platform. The team took care of the backend and frontend developments using Python and Flutter.

    "Very good project with all features delivered on time and budget."

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  • 15
    • Scheduling

      4.8
    • Quality

      5.0
    • Cost

      4.9
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $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.

    Clients

    • Shell
    • Innogy
    • Maspex
    • Activy

    Industries

    Notable Project

    LeanCode built two applications for a software and hardware company. The development included using the cross-platform Flutter framework for building the apps connected to a .NET backend.

    "They knew Flutter very well and they basically prepared everything on their side."

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  • 16
    • $25,000+
    • 50 - 249 employees
    • Warszawa, Poland

    EC2 S.A. is a IT services company founded in 2006 in Warsaw, Poland. Their team of around 20 employees provides custom software development services to mostly mid-market businesses in the IT sector. 

    Industries

    Notable Project

    SEDIVIO S.A. helps a blockchain consulting company build their web services product. The team uses Java for the project. They have started with a business and system analysis.

    "We could count on their support in sharing innovative solutions and best practices with us."

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  • 17
    • $10,000+
    • 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.

    Clients

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

    Industries

    Notable Project

    Ideo developed and launched an e-commerce website. The solution included UI/UX and SEO.

    "The launch improved our sales and earned several prestigious awards."

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  • 18
    • Scheduling

      5.0
    • Quality

      4.3
    • Cost

      5.0
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $5,000+
    • 50 - 249 employees
    • Warszawa, Poland

    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.

    Clients

    • Unilever
    • Volkswagen
    • Sanofi
    • Leroy Merlin

    Industries

    Notable Project

    9BITS developed iOS and Android apps for a bike-sharing company. They integrated the app with the client’s core system, existing apps, Revel Systems, VPNs, and tunnel links for connections in certain cities. The client appreciated the level of quality that 9BITS put into their work.

    “We’ve worked with 9BITS on projects in the past, and were happy with the quality of their work and ability to understand our business.” – Project Manager, Bike-Sharing Company

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  • 19
    • $10,000+
    • 10 - 49 employees
    • Warszawa, Poland

    Founded in 2016, MITRIX Technology is located in Belarus, Minsk. Their team of 21 employees provides web development, custom software development, and IT staff augmentation services to small businesses.

    Industries

    Notable Project

    MITRIX Technology dedicated a UI/UX designer who developed roadmaps to improve the product’s user journey. They also found a frontend developer who continues maintaining and enhancing the Angular-based web app.

    "MITRIX offers consistent candidates who stick around."

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  • 20
    • Scheduling

      4.8
    • Quality

      4.9
    • Cost

      4.9
    • NPS

      4.9
    Read Full Reviews on Clutch Visit Site
    • $5,000+
    • 10 - 49 employees
    • Warszawa, Poland

    ImpiCode is a software development company that specializes in mobile, custom software, and web development services. Founded in 2017, they have a team of roughly 6 employees located in Warsaw, Poland.

    Clients

    • Sodexo
    • AVLab
    • Planet
    • La Pelle Laser

    Notable Project

    ImpiCode assisted a loyalty program company's web platform using PHP and AWS technologies. The vendor's service mainly included repair and maintenance work on frameworks such as Zend1/2 and MySQL 5.5.

    "All tasks were performed diligently with attention to detail."

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  • 21
    • Scheduling

      4.8
    • Quality

      4.7
    • Cost

      4.8
    • NPS

      4.8
    Read Full Reviews on Clutch Visit Site
    • $5,000+
    • 50 - 249 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.

    Clients

    • ABB
    • Bayer
    • Carrefour
    • PKO BP

    Industries

    Notable Project

    Fabrity helped a global technology company replace the software that handled HR requests. The team managed the backend, UI, and integrations using .NET, Microsoft SQL Server, and React.js technologies.

    "Fabrity showed full professionalism, deep expertise, and flexibility at every stage of the project."

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  • 22
    • Scheduling

      4.3
    • Quality

      4.5
    • Cost

      4.8
    • NPS

      4.8
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    • $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.

    Clients

    • Cd Projekt Red
    • 1C Game Studios
    • White Wizard Games
    • Blayze Games

    Industries

    Notable Project

    StoryMode provides remote Unity development resources for a mobile game company.

    "Their willingness to be flexible on hours stands out to me. Their price is also good."

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  • 23
    • Scheduling

      4.8
    • Quality

      4.9
    • Cost

      5.0
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $5,000+
    • 10 - 49 employees
    • Warszawa, Poland

    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.

    Clients

    • Microsoft
    • DLL Group
    • 7N.com
    • RentalButler

    Industries

    Notable Project

    JMMJ designed and developed a mobile workflow application for a financial services company. They implemented an integrated and sophisticated calculation engine, and handled modifications and new features for later releases. The app is regarded as a game changer and was expanded to all business lines due to its success.

    “JMMJ is an exceptional partner due to their ability to work expeditiously and remain adaptive. Their team is able to fill in the gaps when planning initial scopes, and always delivers on time.” – New Business Development Manager, Financial Services Company

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  • 24
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      4.5
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $5,000+
    • 50 - 249 employees
    • Warszawa, Poland

    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.

    Clients

    • PGNiG SA
    • PSG
    • EWE
    • Vervis

    Industries

    Notable Project

    CROSS sp. z o.o developed custom versions of invoicing software to track customer interactions, including a version for an electricity product. They consistently update the system to ensure legal compliance. 

    “CROSS sp. z o.o is truly passionate about their work and committed to securing success for their customers.”

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  • 25
    • Scheduling

      5.0
    • Quality

      4.8
    • Cost

      4.2
    • NPS

      4.5
    Read Full Reviews on Clutch Visit Site
    • $10,000+
    • 50 - 249 employees
    • Warszawa, Poland

    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.

    Clients

    • DA Systems
    • Together
    • Trainplanet

    Industries

    Notable Project

    Inspeerity provided delivery and project management services for a telecommunications company. In efforts to fulfill deliverables to an end customer, they handled configuration, documentation, and test results.

    “They’re a professional company that has really good resources, and I’d highly recommend them.”

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  • 26
    • Scheduling

      5.0
    • Quality

      4.8
    • Cost

      4.5
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • Undisclosed
    • 250 - 999 employees
    • Warszawa, Poland

    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.  

    Clients

    • Deloitte
    • Trackman
    • Razer
    • Nuddge

    Industries

    Notable Project

    SpyroSoft is an ongoing partner that implements various projects for several end clients at a time. Their work involves development, UI design, QA, and project management for numerous systems and apps, tackling a wide array of technologies.

    "We feel that we found a sustainable partnership with them."

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  • 27
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      5.0
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $10,000+
    • 10 - 49 employees
    • Warszawa, Poland

     

    Qodeca was founded in 2018, and focuses on building management and user-facing applications  With around 50 employees in Poland, it supports all software product lifecycle stages by providing services in UX/UI design, mobile development, web development, cloud, DevOps, and beyond. They work mainly with midmarket clients and early-stage startups providing them with the whole toolset required to succeed.

    Clients

    • The Bay Club Company
    • Optimal Financial Systems
    • EoS Fitness
    • Global Guardian

    Industries

    Notable Project

    A hospitality company has outsourced their entire software development pipeline to Qodeca's team. They design UI/UX models and use tools such as Microsoft Azure and MySQL to build mobile apps and websites.

    "It just makes a lot of sense for us to keep engaging Qodeca’s team."

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  • 28
    • $5,000+
    • 50 - 249 employees
    • Warszawa, Poland

    Uptime, a midsize custom software development company, is based in Tallinn, Estonia; Oslo, Norway; Warszawa, Poland and Vejle, Denmark. They focus on custom software development, IT managed services, e-commerce development, application management & support, and more and were founded in 1992.

    Industries

    Notable Project

    Uptime Development provides web development services for an Estonian consumer electronics distributor. The team has revamped the client's site, building the frontend using Vue.js and coding it with C#.

    "They’ve become pretty good partners, and we can communicate freely with them."

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  • 29
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      5.0
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $5,000+
    • 250 - 999 employees
    • Warsaw, Poland

    SotaTek JSC is an AI and blockchain development company based in Hanoi, Vietnam, with offices in Tokyo and Osaka, and Costa Mesa, Calif. The company, founded in 2015, has more than 500 employees and provides blockchain, custom software development, mobile app development, web development, AI, e-commerce development, and IT strategy consulting services. SotaTek serves mid-market and other-sized companies in various industries that include arts & entertainment, business services, and automotive.

    Clients

    • Kyber Network
    • Flowchain
    • ProximaX
    • XinFin

    Industries

    Notable Project

    SOTATEK JSC developed a web app for a software solutions provider. The client was looking to lessen their internal team's workload and becoming more productive and efficient.

    "I would say that becoming a partner with SotaTek is the wisest decision we ever made."

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  • 30
    • $10,000+
    • 50 - 249 employees
    • Warszawa, Poland

    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.

    Industries

    Notable Project

    Team Connect Ltd. has provided recruitment services for an IT company. The team is tasked with looking for developers that are suited for the client's job vacancy.

    "We have perfect communication at daily work, and I feel that I can count on the help of Team Connect."

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