Top 100 C# Developers in London
The Best of September 2026Looking for a top C Sharp software development company in London?
The programming language C Sharp (C#), is general-purpose and used for web and mobile apps. It has a number of advantages: It's object-oriented, has automatic garbage collection, functions across platforms, has backward compatibility, and integrates well with other platforms and services.
To assist you in your search for a partner, we’ve compiled this list of the top C# developers in London. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
List of the Best London C Sharp (C#) Software Development Companies
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31$10,000+50 - 249 employeesLondon, EnglandLaunched in 2015, Angry Nerds is a custom software development firm. The firm specializes in Custom Software Development, UX/UI Design, Web Development, and Mobile App Development and has a midsize team. The firm is in Wrocław, Poland; London, England; Atlanta, Georgia and Toronto, Canada.Read More
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32$10,000+250 - 999 employeesHarrow, EnglandLocated in Vadodara, India; Harrow, England; Konappana Agrahara, India and Round Rock, Texas, Rishabh Software is a software development company. The midsize team specializes in Custom Software Development, Digital Engineering, Enterprise App Modernization, Artificial Intelligence, and more and was established in 1999.Read More
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LindeIndustries
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33$10,000+10 - 49 employeesLondon, EnglandHeadChannel Consulting, a software development company, is based in London, England; Katowice, Poland and New York, New York. The small team provides Custom Software Development, Artificial Intelligence, UX/UI Design, Web Development, and more and was founded in 2004.Read More
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The William Pears GroupIndustries
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34$25,000+10 - 49 employeesLondon, EnglandAtraX is a small IT strategy consulting company. The Tirana, Albania-based company was established in 2015. Their services include IT strategy consulting, IT staff augmentation, Custom Software Development, Web Development, and more.Read More
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35$25,000+50 - 249 employeesLondon, EnglandRead More
Global Talent is an IT firm based in London with more than 50 experts. Since their founding in 2017, they have provided IT staff augmentation, custom software development, and IT strategy consulting solutions for clients ranging from small firms to large companies.
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VodoriIndustries
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36$25,000+250 - 999 employeesLondon, EnglandAI Engineering by Grid Dynamics, an IT staff augmentation company, is based in Zug, Switzerland; Wormerveer, Netherlands and London, England. They offer IT staff augmentation, Custom Software Development, and IT strategy consulting and were established in 1999.Read More
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37$25,000+10 - 49 employeesLondon , EnglandRead More
AVAMAE is a software solutions agency run by a team of fewer than 50 professionals founded in 2011. Based in London, the company offers custom software, web, and mobile app development services for small and medium-sized businesses from various industries, such as business services, financial services, and health care.
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BetDSIIndustries
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38$5,000+10 - 49 employeesLondon, EnglandAuthentic Digital, an UX design company, was launched in 2010. They are located in London, England; Hong Kong, Hong Kong and Kraków, Poland and have a small team. Authentic Digital offers UX/UI Design, Web Design, Custom Software Development, Blockchain, and more.Read More
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J.P. Morgan Asset ManagementIndustries
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39$25,000+50 - 249 employeesLondon, EnglandIncepteo Labs is a midsize artificial intelligence development company. The London, England-based company was founded in 2007. Their services include Artificial Intelligence, Mobile App Development, UX/UI Design, Custom Software Development, and more.Read More
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GeodisIndustries
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40$10,000+10 - 49 employeesLondon, EnglandRead More
Rightsoft LTD, a custom software development company, was launched in 2018. Headquartered in London, United Kingdom, their small team offers custom software development, web development, mobile app development, IT strategy consulting, and more.
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AsicsIndustries
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41$5,000+10 - 49 employeesLondon, EnglandKingIT Solutions is a Blockchain company. Their small team is located in London, England. Their services include Blockchain and Custom Software Development. The company was established in 2014.Read More
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42$25,000+50 - 249 employeesLondon, England2Base Technologies is a custom software development firm headquartered in London, England; Kochi, India; Dover, Delaware and Hilbert, Australia. The midsize agency was established in 2010. Their services include Custom Software Development, Artificial Intelligence, Mobile App Development, Enterprise App Modernization, and more.Read More
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United NationsIndustries
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43$25,000+250 - 999 employeesLondon, EnglandWeb design agency IT Labs is headquartered in Palm Beach Gardens, Florida; London, England; Noordwijk, Netherlands and Skopje, North Macedonia. The midsize team focuses on Web Design, BI & big data consulting & SI, UX/UI Design, IT strategy consulting, and more and was launched in 2005.Read More
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44$25,000+50 - 249 employeesLondon, EnglandRead More
Esynergy is a big data analytics company. They are headquartered in London, United Kingdom and have a midsize team. Their services include BI & big data consulting & SI, cloud consulting & SI, custom software development, mobile app development, and more.
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45$10,000+50 - 249 employeesStanmore, EnglandSATVA Softech, an IT staff augmentation company, was founded in 2015. They are in Stanmore, England and Raleigh, North Carolina and have a midsize team. Their services include IT staff augmentation, Mobile App Development, Custom Software Development, and Artificial Intelligence.Read More
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RitzziIndustries
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46$50,000+50 - 249 employeesLondon, EnglandRead More
Vodworks is a London, United Kingdom-based data analytics company. They offer BI & big data consulting & SI, custom software development, broadcast video, IT strategy consulting, and more and were launched in 2011.
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47$5,000+2 - 9 employeesLondon, EnglandOcean View Games, a custom software development company, was established in 2020. Their small team is headquartered in London, England. Their services include Custom Software Development and AR/VR development.Read More
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48$10,000+50 - 249 employeesLondon, EnglandUbistart is a London, England-based software development company. They provide Custom Software Development and Mobile App Development and were launched in 2016.Read More
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49$75,000+50 - 249 employeesLondon, EnglandThe Virtual Forge, a big data analytics company, was established in 2010. The midsize Holt, United Kingdom-based team provides BI & big data consulting & SI, custom software development, cloud consulting & SI, devops managed services, and more.Read More
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SEGA Kelda Dynamics Ford Network RailIndustries
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50$5,000+50 - 249 employeesHarrow, EnglandIT Path Solutions, a web development company, is headquartered in Mooresville, North Carolina; Ahmedabad, India and Harrow, England. The midsize team focuses on Web Development, AI Consulting, Enterprise App Modernization, cloud consulting & SI, and more. The company was established in 2012.Read More
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Digital Civic- E CitizenIndustries
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51$10,000+10 - 49 employeesLondon, EnglandSkillo® is an IT staff augmentation company based in Sofia, Bulgaria and London, England. The small team specializes in IT staff augmentation, Custom Software Development, Artificial Intelligence, Corporate Training & Coaching, and more and was launched in 2018.Read More
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52$5,000+10 - 49 employeesSurbition, EnglandRead More
Mrmmbs Vision, an application development firm, was established in 2011. The small team provides mobile app development, web development, custom software development, ux/ui design, and more. The agency is located in New Delhi, India and Surbition, United Kingdom.
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53$50,000+50 - 249 employeesLondon, EnglandRead More
Founded in 2006, Vector Software Ltd is an IT outsourcing company based in L'viv, Ukraine. They have more than 50 employees that specialize in application testing and development. They mostly work with mid-market and small businesses.
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Stingray - Optical delousing solutions for fishing industry;Industries
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54$5,000+10 - 49 employeesLondon, EnglandIoT development company internetum was launched in 2012. Their small team is located in London, England. Their services include IoT development, Mobile App Development, and Custom Software Development.Read More
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55$10,000+10 - 49 employeesLondon, EnglandTechtiq is a London, England-based app development firm. The small firm was launched in 2017. Their services include Mobile App Development, Web Development, Custom Software Development, and Web Design.Read More
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Oxford UniversityIndustries
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56$1,000+50 - 249 employeesLondon, EnglandMadiff is an artificial intelligence company. Their midsize team is located in Warszawa, Poland; Braga, Portugal; Kraków, Poland and Los Angeles, California. The agency provides Artificial Intelligence, IT managed services, Custom Software Development, Blockchain, and more.Read More
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AWP Polska SP. z o.o.Industries
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57$5,000+10 - 49 employeesLondon, EnglandRead More
Technology consulting firm Priocept is based in London. Their team includes 11 employees. Priocept has been specializing in e-commerce development, IT consulting, and web development since it was founded in 2004. Most of their partnerships include enterprise and midmarket clients.
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ArgosIndustries
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58$1,000+2 - 9 employeesFulham, EnglandRead More
Lisa Web Design is a web agency based in Küçükçekmece, Turkey with more than two employees. They have offered web design, custom software development, and web development solutions since their founding in 2013.
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Novarch E-CommerceIndustries
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59$10,000+10 - 49 employeesLondon, EnglandEstablished in 2022, Captivate Solutions Tech Ltd is a IT staff augmentation company. The small team offers IT staff augmentation, custom software development, application management & support, and enterprise app modernization. The agency is in London, United Kingdom.Read More
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60$10,000+50 - 249 employeesTwickenham, EnglandIT strategy consulting company INVINCIX Solutions Private Limited was founded in 2017. Their midsize team is in Singapore, Singapore; Bhubaneswar, India; Ho Chi Minh City, Vietnam and Twickenham, United Kingdom and provides IT strategy consulting, ux/ui design, IT managed services, custom software development, and more.Read More
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XimpleIndustries
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