Top 100 Java Development Companies in London

N-iX is a global software solutions and engineering services company that helps the world’s leading organizations turn challenges into lasting business value,  operational efficiency,  and revenue growth using modern technology. With over 2,000 professionals in 25 countries across Europe and the Americas, N-iX offers expert solutions in cloud, data analytics, embedded software, IoT, AI, machine learning, and other tech domains. Being in business for over two decades, we have worked with dozens of industry-leading enterprises and Fortune 500 companies, creating value across a wide variety of sectors, including finance, manufacturing, supply chain, retail, and more. 

Headquartered in New York, Vention is a custom software development company with additional offices in Marietta, Ga. and Iselin, N.J. Since 2002, Vention has helped startups and fast-growing tech companies fill in their talent gap and create robust web and mobile solutions that users love. To date, Vention's talent pool includes 3500+ engineers with experience in all of the latest technologies.

Binariks is a web and mobile development company with offices in Ukraine and California. Their team of nearly 200 creates custom web, mobile, and big data solutions. Founded in 2014, Binariks works with startups and established businesses across the globe.

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. 
 

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. 

Andersen is an international custom software development company that, among other things, specializes in healthcare software development. Since its founding in 2007, the company has opened more than ten development centers and about ten sales offices worldwide. More than 2700 highly qualified specialists work on developing, customizing corporate IT solutions, web applications, and mobile applications. Andersen has completed over 950 projects and received hundreds of positive reviews from clients worldwide. Today the company is working on over 250 projects. Our technology stack includes .NET, C#, Java, Python, PHP, Node.js, TypeScript, Golang, C++, JavaScript, Angular, React.js, Vue.js, HTML, CSS, Java (Android), Swift / Objective C (iOS), React Native, and more. We also offer manual and automated testing, business and data analysis, UI/UX design, DevOps services, IT security management, and L1, L2, L3 support.

SPD Group is an IT and development company in London, United Kingdom; Kyiv and Cherkasy, Ukraine; and Tel Aviv, Israel. Founded in 2006, they have about 16 employees that serve mostly midmarket and small-business clients in the business, financial, and IT sectors. Services include custom software development, AI, and IoT development.

DotCode is a design and development company based in Lviv, Ukraine, and founded in 2018. Their team of more than 10 provides web development, web design, and e-commerce development solutions for clients in the fields of hospitality, advertising, and financial services.

SENLA is a fast-growing software development company in 5 EU locations, founded in 2012. Our team of 600+ certified technical specialists and managers has large expertise in a full-cycle development from BA to maintenance as well as separate services like QA or UX Audit. We have successfully completed over 350 projects in FinTech, Healthcare, Manufacturing and other industries.

Infinum is a software development company in San Francisco, CA. The 50+ team has equal experience in mobile and web development. They work with clients from a variety of industries, including business and financial services and automotive.

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.

Vega IT is a Software company in Serbia. Founded in 2008, they have 750+ engineers with experience in FinTech, HealthTech, PharmaTech, Transportation & logistics, FoodTech, and Enterprise blockchain. Their services include Custom software, Mobile App Development, Application Testing, E-commerce and Web development.

Old.St Labs is a software development business based in London. The business, founded in 2020, has a team of more than ten that provides custom software development, mobile app development, UX/UI design, web design & development, and AI services. Old.St Labs serves small and mid-market companies in the advertising & marketing, education, financial services, health care & medical, and legal industries.

Codest is a software development company that was founded in 2009 and has offices in Krakow and Warsaw, Poland. They have 40 employees specialized in the end-to-end building of custom products, primarily for companies in e-commerce, marketplace, adtech, fintech, proptech and SaaS. Services include backend, frontend and product design.

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. 

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.

Sprint Innovations is a development agency based in London with fewer than 10 employees. Founded in 2014, they offer custom software, web, and mobile app development solutions for clients that work in the fields of business services, financial services, and real estate.

TkXel is a mobile app and web development company founded in 2007. With its headquarters in Reston, Va., and an office in Lahore, Pakistan, they have a team of 318 employees. Their services include mobile app development, web development, and custom software development. They primarily serve small and midmarket clients. 

CubeZoo is a web development company. The small team is headquartered in Randburg, South Africa. Their services include web development, mobile app development, and enterprise app modernization.

Softwire is a digital design, engineering and support agency, with offices in London, Cambridge and Manchester. Employing over 200 engineers we create bespoke digital software, mobile apps, and offer strategic IT consulting for some of the UK’s leading brands including the BBC, David Lloyd Clubs, Channel 5 and many large Government Departments.

Default-Value Software Developers is an e-commerce development company. They specialize in e-commerce development, custom software development, and web development and were founded in 2010. Their small team is Chercassy, Ukraine-based.

Digiryte is a web and mobile app development company based in Manchester, United Kingdom with another UK office in Preston. Since 2015, their team of 28 has been specializing in mobile app development, custom software development, and web development for midmarket clients. 

RNDpoint (former PST Labs) is a London-based development firm. The team of over 50 provides mobile app, custom software and web development services. Founded in 2014, they primarily serve enterprise businesses in the financial services industry.

Mifort is a web development firm. Founded in 2015, the team focuses on web development and mobile app development. Their small company is Tallinn, Estonia-based.

Founded in 2005 and headquartered in Croydon, UK, GoodCore Software specializes in bespoke software development. WIth a team of about 50 employees, the company offers web and mobile app development to startups and established businesses alike. Engagement options include fixed- cost and dedicated development teams.

ExpandX is a web services provider and digital marketing agency headquartered in Sofia, Bulgaria. It also has locations in London, New York, Munich and Barcelona. The company was founded in 2015 serving clients globally with projects of different sizes and niches. ExpandX provides web development services, e-commerce solutions, social media marketing, PPC, web design, video marketing, and other related digital services.

Zoondia is a custom software development and technology solutions company based in Trivandrum, India, with offices in the USA, Qatar, UAE, and Saudi Arabia. The company was founded in 2008, and their staff of around 80 provides blockchain, chatbot, big data analytics, digital marketing, cloud and infrastructure, QA, IoT, and VR/AR services to small to big businesses and companies.

Founded in 2005, PGS Software is an IT solutions company based in Wroclaw, Poland. They provide development and consulting services to businesses of all sizes from a variety of industries. 

Metasite is a software development firm. Their midsize team is based in Vilnius, Lithuania and London, United Kingdom. The firm specializes in custom software development, application management & support, IT managed services, and IT strategy consulting.

TH-EY is a development agency in London, England. Founded in 2017, they have about 8 employees that serve clients in a variety of industries. Services include custom software development, web development, and mobile app development.