Top 100 C# Developers
September 2023Looking for a top C# programmer?
C Sharp, or C#, is a programming language created by Microsoft. It's general-purpose and addresses static typing, object- and component-oriented programming approaches. It uses the .NET framework and is best for developing web apps, desktop apps, mobile apps, and games.
That's why we've created this list of the best C# developers for you to review. Read through company descriptions, former clients, and notable projects to find the best fit for your business.
List of the Best C# Programmers
-
1
- $50,000+
- 1,000 - 9,999 employees
- Kraków, 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
Visit SiteNotable Project
Software Mind augments the staff of a financial services company to provide development services for eight projects. They use .NET, Visual Studio, PFX, C#, JavaScript, and Angular.
"We now share best practices and also learn from each other in different areas."
- Get Started
Get connected with a company for free
Tell us about your project, and we'll match you with vetted companies that meet your requirements.
-
2
- $25,000+
- 250 - 999 employees
- Gliwice, Poland
Future Processing is a software developer based in Gliwice, Poland. Founded in 2000, they now have more than 900 employees. They specialize in custom software development, web development, and enterprise app modernization for primarily midmarket and small business companies in the healthcare, IT, and transportation industries.
Clients
- Allocate
- Demica
- 4 finance
- Coconet
Industries
Visit SiteNotable Project
Future Processing provided software development for a mortgage and brokerage startup. The team built an MVP for a tool that could match end customers’ cases with bank rules, regulations, and interest rates.
“The entire team did a really good job.”
-
3
- $25,000+
- 50 - 249 employees
- Princeton, NJ
Glorium Technologies is a healthcare-focused app and software development company headquartered in Manalapan, N.J. The company was founded in 2010, and has a team of around 70 employees who specialize in web development, custom software development, and mobile app development. They work mostly with small and mid-market businesses in the health care & medical industry.
Clients
- CAE Healthcare
- AGFA Healthcare
- REALPAGE
- control.IT
Industries
Visit SiteNotable Project
Glorium Technologies developed a mobile application for a medical equipment company. Glorium Technologies partnered with the client's mobile team to build an app to retrieve patients' real-time data feedback.
"Their dedication to understanding our goals and the needs of our patients was evident from the start."
-
4
- $50,000+
- 1,000 - 9,999 employees
- L'viv, Ukraine
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.
Clients
- Volvo
- Scania AB
- KnorrBremse
- AstraZeneca
Industries
Visit SiteNotable Project
Sigma Software Group has developed a mobile app for an equestrian training company. The app features a streaming service that horse riders can use for digital training.
“We’ve been very satisfied with Sigma Software Group’s work. The current resources are a solid part of our team"
-
5
- $25,000+
- 250 - 999 employees
- Wrocław, Poland
CSHARK is a software and product development company that helps enterprises with digital transformation and start-ups translate ideas into products. Founded in 2014, it currently has over 300 mid and senior developers on board. CSHARK creates web and mobile apps from scratch and consults companies from FinTech and RegTech sectors. According to the Financial Times ranking in 2019 and 2020, we were among the fastest-growing companies in Europe.
Clients
- Fenergo (Fintech)
- REGENHU (Biotech)
- VecCtor (Digital infrastructure for Industry 4.0)
- HTP J-1 Visa Programs
Industries
Visit SiteNotable Project
CSHARK has provided an architecture and engineering company with custom software development services. They’ve used tools such as AWS, JavaScript, and Mapbox.
"They’ve been very thorough, asked the right questions, and challenged us in the right way."
-
6
- $25,000+
- 250 - 999 employees
- Pleasanton, CA
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
Visit SiteNotable Project
Altoros has provided staff augmentation services for a software development company. They have hired experts who would transition the frontend of the client's website from Angular to React.
"The deliverables were generally met on time with high quality."
-
7
- $50,000+
- 250 - 999 employees
- Farnborough, United Kingdom
One Beyond is a bespoke software development and digital transformation company headquartered in London with additional engineering centers in Madrid (Spain), Budapest & Szeged (Hungary) and Bucharest (Romania). Across international locations, they have a team of more than 350 individuals providing custom software, web and mobile application development and large- scale digital transformation to a diverse clientele.They support large established businesses, nonprofits, government organizations, and VC-funded startups
Clients
- Smith & Nephew
- GAIL's Bakery
- Costa Express
- Pearson
Industries
Visit SiteNotable Project
One Beyond (formerly DCSL GuideSmiths) developed a cloud-based web app for a contract company. The digital tool lets users define large construction projects and streamlines the procurement process for contractors.
“Whenever there was a problem, they helped us come up with a solution.”
-
8
- $25,000+
- 250 - 999 employees
- Austin, TX
Maruti Techlabs is a product development company based in Ahmedabad, India. Founded in 2009, the team of 140 works to build future-proof products and guide digital transformation and sustainable scaling for small, mid-sized, and enterprise clients across a wide range of industries.
Clients
- Telefonica
- NHS
- Domino Printing
- Amneal Pharma
Industries
Visit SiteNotable Project
A real estate technology company has hired Maruti Techlabs for staff augmentation. They've provided resources to work with the client's software team for .NET, C#, AngularJS, and React custom development.
''They were available every step of the way to address any specific changes we had.''
-
9
- $50,000+
- 1,000 - 9,999 employees
- Tallinn, Estonia
Founded in 1991, ELEKS is a provider of software development, product design and technology advisory services. They offer cooperation models that fit the goals, resources and timelines of Fortune 500 companies, large enterprises, and small businesses. ELEKS has more than 2,000 specialists and 17 offices on three continents to serve their clients globally.
Clients
- Eagle Investment Systems (a subsidiary of BNY Mellon)
- Autodesk
- ESET
- TAIT
Industries
Visit SiteNotable Project
ELEKS has provided custom software development services for an investment research company. They’ve taken patches of code, developed a marketplace using C#, and integrated Stripe and Zoom into the system.
“They’ve never skipped a beat on anything. The team keeps everything flowing.”
-
10
- $50,000+
- 250 - 999 employees
- Nashville, TN
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.
Clients
- Big 4 Accounting firms
- McDonald's
- 360 view
- Sage Freight
Industries
Visit SiteNotable Project
Trinetix refactored and maintained a technology consultancy's existing mobile app. They refactored the app's codebase using React and .NET Core, added features, and implemented automated deployment pipelines.
"They were able to understand our needs accurately and translate them into features."
-
11
- $50,000+
- 50 - 249 employees
- Gliwice, 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
Visit SiteNotable Project
Brainhub has designed the platform of a building materials marketplace. The team's tasks include user and usability research, business analysis, solution development, and proxy work for the platform's relaunch.
"I'm impressed with their flexibility."
-
12
- $25,000+
- 1,000 - 9,999 employees
- Kraków, 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.
Industries
Visit SiteNotable Project
Ailleron built a platform for a bank in three languages. They provided development and support using Vaadin, .NET, Angular, Kotlin, Swift, and Rabbit. Most recently, the team worked on a Vaadin update.
"They know their business, and working with them is a pleasure."
-
13
- Undisclosed
- 250 - 999 employees
- New York, NY
Abto Software, founded in 2007, is a custom software engineering company headquartered in New York City, with an additional office in Lviv, Ukraine. The company’s team of 208 people specialize in AI, enterprise app modernization, and web development. Their clients are mid-market, small, and enterprise businesses. Most of the businesses they work with are in the IT, health care & medical, and retail industries.
Clients
- Medikit
- UPGREAT
- Skybow
- WeGo VISION LTD
Industries
Visit SiteNotable Project
Abto Software provides software development services for an IT company. They’ve developed mobile and web applications and fulfilled their end clients’ needs. They’ve also helped them with cloud management.
“They’re hitting the ball out of the park.”
-
14
- $50,000+
- 1,000 - 9,999 employees
- Washington , VA
Based in Vienna, VA, 10Pearls designs and maintains apps for various companies. The company and its nearly 350 employees have experience in cybersecurity, product development, and UX/UI design.
Clients
- HughesNet
- Johnson & Johnson
- PayPal
- CocaCola
Industries
Visit SiteNotable Project
10Pearls provides software development services for a financial company. 10Pearls is developing a custom fintech software using MEAN stack, including MongoDB, Express.js, React.js, and JavaScript.
“10Pearls’ company’s culture and organization are excellent.”
-
15
- $5,000+
- 250 - 999 employees
- Gdańsk, Poland
Solwit SA is a custom software development firm based in Gdańsk, Poland. Founded in 201, their team of 500 serves clients in the IT, Financial services and utilities sectors. Services include NodeJS, AngularJS, and .NET development.
Industries
Visit SiteNotable Project
Solwit SA developed a custom web application for a production and service company. They integrated a GUI login panel and a parameter editor module saved to .json files, among several other modules.
"The communication and project management was impeccable."
-
16
- $25,000+
- 1,000 - 9,999 employees
- Orlando, FL
Simform is a custom software development company founded in 2010. They have helped organizations ranging from startups, Fortune 500 companies, and WHO-backed NGOs. The team of 250+ delivers digital solutions for their clients and offer artificial intelligence services, API integration, dedicated software development team, and software testing services.
Clients
- Redbull
- Hilton
- Sony Music
- Boy Scouts of America
Industries
Visit SiteNotable Project
Simform has developed a native mobile app for a digital transformation agency. The goal is to deploy a system that can grow and adapt to changing customer, market, and business needs.
"Their ability to accommodate and be flexible to our needs is impressive."
-
17
- $25,000+
- 50 - 249 employees
- L'viv, Ukraine
Leobit is a web and mobile application development company based in Lviv, Ukraine. Founded in 2014, their team of 114 specializes in IT staff augmentation beyond their development capabilities. They work with mid market and enterprise companies in the information technology, hospitality, health care, and e-commerce industries.
Clients
- KEMET Corporation
- Antourage
- VismoX
- Imnoo
Industries
Visit SiteNotable Project
Leobit has developed and maintained the platform of a payment technology company. The team has built a number of components that help the client provide a cohesive UX for their customers.
"Their flexibility to adjust to project demands in a timely fashion is impressive."
-
18
- $5,000+
- 250 - 999 employees
- Kolkata, India
Capital Numbers is a digital production outsourcing company headquartered in Kolkata, India, with additional locations in Beerwah, Australia, Dover, Del., and the U.K. The company was founded in 2012, and has a team of nearly 300 people who provide web development, custom software development, mobile app development, and e-commerce development. They provide services mostly to mid-market businesses, but also to enterprise and small businesses. The businesses they serve are in different industries including the advertising & marketing, business services, and financial services industries.
Clients
- Consumer Reports
- Amount
- Thomson Reuters
- Tipalti
Industries
Visit SiteNotable Project
Capital Numbers revamped the website of a wealth management company. Their work included adding features like pop-ups and modules, splitting the backend into two sides, and editing and polishing its content.
"They were timely and fast. I would highly recommend Capital Numbers."
-
19
- $25,000+
- 50 - 249 employees
- New York, NY
DOOR3 is a software development company headquartered in New York, NY. Founded in 2002, DOOR3 has grown to a team of about 60 employees that serves mostly enterprise and mid-market business. They provide software, web, and mobile app development, UX/UI design, and enterprise app modernization.
Clients
- Achievement Network
- AIG
- Alvin Ailey American Dance Theater
- American Museum of Natural History
Industries
Visit SiteNotable Project
A software company hired DOOR3 to create a unified look and feel for their products with UI/UX design. After research, DOOR3 gave suggestions for design elements like color schemes, systems, and fonts.
“They had a great team, and we have nothing but praise for them.”
-
20
- $5,000+
- 250 - 999 employees
- Wrocław, 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
Visit SiteNotable Project
Scalo provides IT staff augmentation services for a digital consulting company. They find suitable candidates for in-house teams and end-client projects, also taking care of technical interviews.
“They’re great at sourcing candidates that fit well with us. Scalo finds right-minded people for our projects.”
-
21
- $50,000+
- 10 - 49 employees
- Ottawa, Canada
Iversoft is a full stack digital agency. They were founded in 2009, are based in Ottawa, Canada, and have a staff of 26 employees. They specialize in custom software development, digital strategy, and mobile app development for small business and midmarket clients in the entertainment, non-profit, and gaming industries.
Clients
- Centre For Addiction and Mental Health
- Tribute Entertainment
- HarperCollins' Harlequin
- GAPC
Industries
Visit SiteNotable Project
Iversoft has designed the frontend of an educational organization's website, which compiles 34,000 events into a Neo4j database. The team will also guide the site's host migration and refine its functionality.
"I was happy with their personal service."
-
22
- $25,000+
- 250 - 999 employees
- Houston, TX
TekRevol is an app development startup of 18 employees. Founded in 2014, their headquarters is in Newark, Calif. They offer various services: mobile app development, web development, e-commerce development, blockchain, and more. They primarily work with enterprise and midmarket clients in the e-commerce and business services industries.
Clients
- The University of Toronto
- Waste Connections
- Oz Leasing
- Beach Bandits
Industries
Visit SiteNotable Project
TekRevol is designing and developing an online platform and mobile application for a publishing company. The platform and mobile app will allow users to rent and purchase books, amongst other functionalities.
“TekRevol provides the best customer service that I’ve encountered so far.”
-
23
- $100,000+
- 1,000 - 9,999 employees
- New York, NY
DataArt is a software engineering firm in München, Germany; Zug, Switzerland; London, England; and New York. Founded in 1997, they have about 3,000 employees that serve mainly midmarket and small-business clients in the financial, healthcare, and IT sectors. Services include custom software development, enterprise app modernization, and UI/UX design.
Clients
- The Carlyle Group
- Nasdaq
- Apax Partners
- Monex
Industries
Visit SiteNotable Project
DataArt provides e-commerce solutions for a B2B marketplace. The team is responsible for creating an automated and scalable solution that can be operated in multiple countries.
"They try to solve problems in challenging times, which is highly appreciated."
-
25
- $25,000+
- 1,000 - 9,999 employees
- Denver, CO
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
Visit SiteNotable 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.”
-
26
- $25,000+
- 250 - 999 employees
- Warszawa, Poland
Web and mobile app development company Yalantis is based in Ukraine. Founded in 2008, the team of nearly 200 employees is fluent in web, Android, and iOS development – Swift, Kotlin, JavaScript, Ruby, Node.Js, Goland, and more.
Clients
- KPMG
- Zillow
- Toyota Tsusho
- Healthfully (US Healthcare web platform)
Industries
Visit SiteNotable Project
Yalantis built a library of conduit connectors for a data platform company using Golang. The team built connectors for PostgreSQL, MongoDB, Snowflake, Oracle, Salesforce, and other resources.
“I was most impressed with their team’s technical skills and the quality of their code.”
-
27
- $25,000+
- 50 - 249 employees
- Lehi, UT
Tech9 is a software development firm headquartered in Lehi, Utah. Founded in 2015, their team of about 40 employees works mainly with mid-market clients. They specialize in custom software development, enterprise app modernization, business intelligence and big data consulting, and SI.
Clients
- Larry H. Miller Group
- Flashlight Learning
- Previdence
- Imagine Learning
Industries
Visit SiteNotable Project
Tech9 provides technical resources for an out-of-home ads company. The team handles development tasks and leads feature buildout for the client. They also participate in stand-ups and provide documentation.
"They have highly skilled and motivated engineers."
-
28
- $10,000+
- 250 - 999 employees
- Poznań, Poland
Based in Poland, STX Next is a global software development company. The agency was founded in 2005 and carries a team of over 200 full-stack Python developers alone. In total, the company has over 400 professionals that specialize in web development, software development, and application testing.
Clients
- Mastercard
- Decathlon
- Tiqets
- Verisk
Industries
Visit SiteNotable Project
STX Next has developed a web platform for a financial advisory company using Python and Vue.js. The platform allows the client’s users to leave a review and has a fee reconciliation function too.
“STX Next is impeccably good when it comes to communication.”
-
29
- $50,000+
- 250 - 999 employees
- Naples, FL
Intetics Inc. is a technology company headquartered in Naples, FL, with offices in Minsk, Belarus, Wilmette, Ill., Krakow, Poland and Kharkiv, Ukraine. Founded in 1995, Intetics' team of 474 employees provides small, midmarket, and enterprise businesses with a variety of different services such as custom software development, mobile app development, and application management & support, among others.
Clients
- Encyclopaedia Britannica
- SugarCRM
- Snap-On
- Würth
Industries
Visit SiteNotable Project
Intetics Inc. is developing the components of a cybersecurity firm's vulnerability management platform. They've conducted discovery sessions, checked the current app, and listed all the client's requirements.
"Their responsiveness and pricing are impressive."
-
30
- $25,000+
- 250 - 999 employees
- Lake Oswego, OR
Founded in 2009, Unosquare, LLC is headquartered in Lake Oswego, Ore. with other locations in Guadalajara, Mexico, and Belfast, U.K. With more than 600 employees, they provide software testing and development services, combined with their staff augmentation services to meet software engineering needs, using nearshore development professionals.
Clients
- Vesta
- Harvard Business Publishing
- Foundation Medicine
- Edwards Lifesciences
Industries
Visit SiteNotable Project
A software company has collaborated with Unosquare, LLC for application testing. The team helps discover vulnerabilities and create and execute test plans and cases.
"They are professional, punctual, and helpful when needed."
Get connected with the right company for you
We'll do the work for you – finding and connecting you with service providers that meet your exact requirements.
Schedule ConsultationMost Reviewed C# Developers
Connect with a C# Developers that received the most new reviews in the past 12 months.
C# Developers
- 11 14 new reviews
- 12 13 new reviews
- 13 13 new reviews
- 14 13 new reviews
- 15 12 new reviews
