Top 60 C# Developers in Warsaw

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Top 60 C# Developers in Warsaw

September 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
    • $100,000+
    • 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
    • Branch

    Industries

    Notable Project

    Software Mind supplemented the custom software development efforts of a mortgage network company. They provided QA testing and implemented the Scrum methodology throughout the partnership.

    "The solutions that the Software Mind team worked on were estimated professionally."

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  • 2
    • Scheduling

      4.6
    • Quality

      4.7
    • Cost

      4.4
    • NPS

      4.8
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    • $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. 

    Clients

    • Allstate
    • Siemens
    • Huawei
    • Toyota

    Industries

    Notable Project

    Altoros 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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  • 3
    • Scheduling

      4.8
    • Quality

      4.8
    • Cost

      4.7
    • NPS

      4.9
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    • $25,000+
    • 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.

    Clients

    • National Geographic
    • Paradox Interactive
    • TC Global
    • Collegial

    Industries

    Notable Project

    Brainhub provided frontend development for a wealth management platform. They were embedded in the client’s in-house Scrum teams and used React, Redux, and TypeScript. The team also helped implement Cypress.

    “Brainhub was very engaged and provided the best service possible.”

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  • 4
    • Scheduling

      4.9
    • Quality

      4.9
    • Cost

      4.8
    • NPS

      5.0
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    • $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. 

    Clients

    • Expedia
    • Xerox
    • Toyota
    • eBay

    Industries

    Notable Project

    Itransition is helping develop and design a web and mobile app for a forensic ballistics company, including the entire backend infrastructure. Currently, they’re working on an AIML project as well.

    “Excellency is the most important characteristic of Itransition; they apply it to everything they do.”

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  • 5
    • Scheduling

      4.7
    • Quality

      4.6
    • Cost

      4.5
    • NPS

      4.8
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    • $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 (formerly Perfectial) offered a variety of services to increase software reliability and scalability. They provided software and web development, API development, release management, and reporting.

    “I think of them more as a partner than a group of people that I give requirements to.”

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  • 6
    • Scheduling

      4.6
    • Quality

      4.6
    • Cost

      4.4
    • NPS

      4.8
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    • $25,000+
    • 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.

    Clients

    • Change Donations
    • ELSA
    • Satori Analytics
    • ING

    Industries

    Notable Project

    Scale provides staff augmentation services in the form of recruiting and screening. They find development resources skilled in Java, Angular, Kotlin, and Swift. Their work contributes to banking applications.

    "I am impressed with how successful they are in connecting us with the right candidates." 

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  • 7
    • $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 supports an independent multi-issue platform's internal development team. They work on maintaining and improving the company's current application to prevent any breakdown.

    "The team has integrated well with our developers and became productive quickly."

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  • 8
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      5.0
    • NPS

      5.0
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    • $25,000+
    • 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.

    Clients

    • Adidas
    • Ubisoft
    • SumUp
    • Rakuten

    Industries

    Notable Project

    Pentalog provided custom software development support for a software company. Their responsibilities included building an API for HR and finance and handling new talent reviews.

    "They were very flexible with changes, and they always tried to find the best solutions for our needs."

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  • 9
    • $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 provided onboarding services for a banking solution's system. They were tasked with transferring about 1.5 million accounts from one platform to another.

    "I had the impression that we are partners and I am not a claimant or agreement executor."

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  • 10
    • $5,000+
    • 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.

    Clients

    • Terraces.io
    • Voka
    • Belyagdar
    • Instatsport

    Industries

    Notable Project

    Innowise Group was hired to develop custom software for a gas manufacturing company. They are developing and designing the platform, creating wireframes and designs, and integrating custom modules.

    "They ensured the project was handled carefully and things were delivered on time."

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  • 11
    • $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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  • 12
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      5.0
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $25,000+
    • 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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  • 13
    • $25,000+
    • 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

    Devox Software performed an in-depth code audit of a software company's e-commerce domain and tech stack. They then onboarded a new vendor to support development efforts.

    "Their team had a huge portfolio of projects like ours and frequently provided us with feedback and strategic vision."

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  • 14
    • Scheduling

      4.3
    • Quality

      4.5
    • Cost

      4.3
    • NPS

      4.6
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    • $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 selected and implemented a Drupal-based internet service for an insurance company, focusing on functionality, design, and flexibility.

    "We enjoyed our experience together."

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  • 15
    • 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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  • 16
    • $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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  • 17
    • $25,000+
    • 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. 

    Industries

    Notable Project

    An app-builder company collaborated with Lightpoint Global to develop an MVP. Key deliverables included were APIs for banks, databases and tertiary services, SAP integration, and more.

    "I was impressed by their professionalism during the discovery phase and their attention to every detail."

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  • 18
    • Scheduling

      4.8
    • Quality

      5.0
    • Cost

      4.9
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $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.

    Clients

    • Egmont
    • GoGift
    • CEZ Group
    • Skanska

    Industries

    Notable Project

    GO ONLINE designed and developed the website of a marketing agency. The key technologies used were MongoDB, Express, React, and Node. They facilitated weekly meetings and assigned four resources to the project.

    "They were very professional and working with them was a pleasure for us."

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  • 19
    • 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

    • Credit Agricole Bank
    • Shell
    • Innogy
    • Maspex

    Industries

    Notable Project

    LeanCode provided technology consulting for a mobile app development project. After identifying the appropriate frameworks, LeanCode provided Flutter and .NET developers to build a mobile app and backend. 

    "They were very open when we hired our own internal team and ensured that they got our new employees up to speed." 

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  • 20
    • 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 assigned a team of developers to build and optimize an existing app. They focused on DevOps and improving the app's features. 

    "Our support team has had noticeably less work with manually fixing and explaining various issues on the app."

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  • 21
    • 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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  • 22
    • Scheduling

      4.9
    • Quality

      4.9
    • Cost

      4.8
    • NPS

      4.9
    Read Full Reviews on Clutch Visit Site
    • $10,000+
    • 50 - 249 employees
    • Warszawa, Poland

    AMS LLC is a development agency in Cherry Hill, N.J. and Minsk, Belarus. Founded in 2017, they have about 20 employees that serve mostly small-business and midmarket clients in the transportation, education, and financial sectors. Their services are specialized in mobile app development.

    Clients

    • Sandbox
    • Lil Durk
    • General Electric
    • Square Inc.

    Industries

    Notable Project

    Interexy provided multiple development projects for a wellness company.

    "I am continually impressed by their professionalism, expertise, and friendliness."

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  • 23
    • Scheduling

      4.5
    • Quality

      4.6
    • Cost

      4.5
    • NPS

      4.9
    Read Full Reviews on Clutch Visit Site
    • $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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  • 24
    • $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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  • 25
    • $5,000+
    • 50 - 249 employees
    • Warszawa, Poland

    Development agency UNL Solutions LTD is headquartered in Loughborough, UK. Since the company was founded in 2006, their team has grown to 68 employees. UNL Solutions LTD specializes in IT managed services, e-commerce development, and mobile app development. They mainly work with mid-sized businesses. 

    Clients

    • Corevist
    • BunnyHomes
    • BioRails
    • Kvikna

    Industries

    Notable Project

    UNL Solutions LTD provided technology consulting and development assistance.

    "Everything was perfect."

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  • 26
    • 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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  • 27
    • $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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  • 28
    • 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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  • 29
    • Scheduling

      4.3
    • Quality

      4.5
    • Cost

      4.8
    • NPS

      4.8
    Read Full Reviews on Clutch Visit Site
    • $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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  • 30
    • 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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