Jobs for java backend developer at London

Java DeveloperUp to 105,000Quant Capital is urgently looking for a Java Developer to join a pioneering tech start-up.Our client is an innovative company with a pioneering new concept for the financial markets with their big data technology platform.All the relevant skills, qualifications and experience that a successful applicant will need are listed in the...

About ExTrac ExTrac is a decision intelligence company used by governments, defence organisations, financial institutions, and corporates operating in complex, fast-moving environments. Our capabilities fuse curated data sources, domain-specific AI, and deep human expertise to transform information overload into clear, actionable foresight. Our ambition is...

Job TitleJava Engineer: IG PrimeJob DescriptionWho are we?Hello, we’re IG Group. We are a FTSE100 FinTech company who run mobile, web and desktop platforms that help our clients trade stocks & shares, leveraged products, Futures & Options and Crypto.We are ambitious. Over 340,000 people already use our platforms.We’re global with offices in 18 countries...

Senior Java Engineering Architect - Banking, Payments & AI-Driven EngineeringLondon / (4 days/week from office; 1 day/week from home)Contract or Perm£120Kpa or £500pd (Inside IR35)Role SummaryWe are seeking a highly experienced Java Engineering Architect to lead the architecture, design, and delivery of next-generation Banking and Payment platforms. The...

**About ARQ** ARQ is one of the fastest-growing fintechs in the world. Our mission is to redefine how people interact with money across borders, building the infrastructure to move value seamlessly. We’re still early in our journey, which means every person who joins shapes the future of our product, culture, and growth. If you’re excited by big...

About UsSolirius Reply, part of the Reply Group, is a technology consultancy and digital transformation partner that helps organisations solve complex challenges through strategy, design, engineering, and delivery.We work closely with our clients to deliver secure, accessible, user-focused services that evolve with their needs. By combining deep technical...

We are looking for an experienced Full Stack Developer with strong expertise in Python and React.js to design, develop, and maintain scalable web applications. The ideal candidate should have hands-on experience building microservices, REST APIs, cloud-native applications, and modern frontend solutions. Key Responsibilities Design, develop, and maintain web...

Hey! We're team Granola 👋  If you haven't already, you should check out what we're building, and why you should work here.We're looking for an Product Engineer focussed on the Backend to help us scale our systems to unlock Granola for the next 100x users.In this role, you will deep dive into scaling challenges, build secure and reliable infrastructure,...

A leading tech company in Greater London is seeking an experienced Java Engineer for a 6-month hybrid contract. This role involves designing scalable backend systems and working with modern tools like AWS and Kubernetes. The ideal candidate has strong Java and Spring Boot experience, along with a passion for TDD and microservices. Join a dynamic team working...

LocationLondon, Hybrid Role Type12 Month Contract Rate£800 - £900 per day Delta Capita is seeking a highly skilled Senior Rates Developer to join our Global Markets Technology practice. This role sits within a specialist team responsible for delivering pricing, eTrading and eRisk capabilities across Rates and FX products. The team develops low‑latency,...

About 9fin9fin is the AI platform powering global debt markets — the world’s largest asset class at over $145 trillion.OverviewDebt markets are vast, global, and mission-critical, yet still run on fragmented data, PDFs, and manual workflows. 9fin replaces this broken infrastructure with a single platform that centralises proprietary credit data, deep...

DescriptionSenior Software Engineer, Backend Services & APIsOffice based in Moorgate, LondonJoin Fortinet, a global cybersecurity pioneer with over two decades of excellence, as we continue to shape the future of cybersecurity and redefine the intersection of networking and security. At Fortinet, our mission is to safeguard people, devices, and data...

This role is with one of Dex's trusted partner companies. We work closely with their teams to truly understand their culture, goals, and what they're looking for, so we can match you with the right opportunity and give you context about the role before you commit to a process.The roleThis company builds AI software that turns unstructured sensor data into...

About the role: The payments service team are the heart of Tesco Technology, serving 28 million+ shoppers in the UK and abroad. We deliver HTTP services that reliably manage payments at global scale, 24 hours a day every day. We also provide capabilities that detect and prevent fraud and build upon innovative technologies to reduce loss. 100M+ transactions...

A technology company in the United Kingdom seeks an enthusiastic Java Developer Intern to join its development team. This role provides a unique opportunity to gain hands-on experience in software development, working on real-world projects while enhancing your Java programming skills in a professional environment. Candidates should have proficiency in Java,...

Full Stack Developer (DV Cleared) Location: London, Bristol, Manchester (hybrid) Clearance: Active DV Clearance is essential Salary: £(phone number removed) Design, develop, and maintain scalable digital solutions for Defence and Security clients. The role involves working across the full software development lifecycle, delivering secure, high quality...

Snowrelic Inc is looking for a Java Backend Engineer to join their technology team in London. This full-time position requires expertise in Java and Spring Boot, along with experience in microservices architecture and cloud technologies.The ideal candidate will be responsible for developing scalable backend applications and engaging in best practices thanks...

KASZEK is looking for a Backend Engineer to design and maintain scalable backend systems that support financial inclusion. You will work in a hybrid model, collaborating with a talented team and building systems that enhance how people manage money.The role demands experience in Java and backend development, with opportunities to contribute to innovative...

A leading global financial services firm in Greater London is seeking a Software Engineer III to join its International Consumer Bank team. This position requires expertise in Java and cloud-native microservices, with responsibilities including creating secure, high-quality software and collaborating with diverse teams. Ideal candidates will have strong...

Back End Developer £500-£540 per day | Outside IR35 Java | Spring Boot | Secure Microservices LocationLondon (MOD site) Working Pattern4 days per week onsite ClearanceCurrent DV Security Clearance required BackgroundMOD / Defence experience required The Opportunity We're looking for an experienced Back End Developer to help build the core services...