Backend Developer Java Spring Boot Python Jobs in London, UK

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Senior Backend Architect, Fraud & Risk – Remote

Fanatics Betting & Gaming is searching for a Staff Backend Engineer to lead the backend architectural evolution in fraud detection. The role requires 7+ years in software engineering, primarily with Java and Spring Boot, emphasizing secure and scalable systems. Ideal candidates will collaborate with Risk and Com ...

Principal Software Engineer

About the Role We are seeking a Principal Software Engineer based in London to provide technical leadership across backend services supporting our global payment gateway system. You will design and evolve core platform capabilities, guide architectural decisions across microservices, and ...

Principal Software Engineer

About the Role We are seeking a Principal Software Engineer based in London to provide technical leadership across backend services supporting our global payment gateway system. You will design and evolve core platform capabilities, guide architectural decisions across microservices, and ...

Java Developer – Active SC, Java, Oracle WebLogic

Java Developer – Active SC, Java, Oracle WebLogicUp to £425 per day (Inside IR35)Remote12 monthsMy client is an instantly recognisable Consultancy who are hiring a Java Developer with Active SC Clearance (Security Cleared), Java, Oracle WebLogic and ElasticSearch skills to work with a ...

Java Developer – Active SC, Java, Oracle WebLogic

Java Developer – Active SC, Java, Oracle WebLogicUp to £425 per day (Inside IR35)Remote12 monthsMy client is an instantly recognisable Consultancy who are hiring a Java Developer with Active SC Clearance (Security Cleared), Java, Oracle WebLogic and ElasticSearch skills to work with a ...

Full Stack Server Developer

Rapidly growing educational media company and it is looking to expand its amazing team! e design award-winning products that enrich millions worldwide. A close-knit, collaborative group that obsesses about visual design to help and assist our clients. Continuing to grow and build out their product ...

Full Stack Developer (Java)

**Introduction**At IBM Consulting UK FutureNow, you’ll build a career at the forefront of hybrid cloud and AI, working with leading clients across the public and private sectors.You’ll collaborate with top industry professionals, gain hands on experience with cutting edge technologies, and deliver so ...

Backend Developer (Kotlin/Java), UK – CIMAR

Company Overview CIMAR UK Ltd, now a part of DeepHealth, is a leading provider in the SaaS (Software-as-a-Service) healthcare sector, specialising in advanced cloud-based image management solutions. Our technology empowers healthcare organisations to optimise image management processes, enhance pa ...

Lead Backend Developer Java, AWS & Kubernetes

A leading music company is seeking a Lead Developer to design, develop, and maintain external-facing royalty portals using Java. The role involves building AWS serverless solutions, working with Docker and Kubernetes, and providing technical leadership within the development team. Candidates should have strong e ...

Remote Backend Java Developer — Ownership & Growth

Join a remote-first team as a contract Backend Developer, where you'll take ownership of key technical decisions, collaborate with cross-functional teams, and contribute to an exciting project in the independent music space. Enjoy flexibility, growth opportunities, and a supportive culture. What’s I ...

Application Developer Python/Java | AWS | London

Java Script Works is seeking an Application Developer skilled in Python and AWS to develop and maintain high-quality applications. The position is based in London, requiring presence in the client office three days a week. Candidates should be proficient in Java and have experience with front end/back end integr ...

Software Engineer – Equity Derivatives Pricing & Risk System

We are seeking a highly skilled and motivated Java Developer with a strong background in Equity Derivatives to join our team in London. In this role, you will play a pivotal part in building and enhancing Equity Volatility Risk and P & L system that supports our Equity Volatility Managers. This is an excit ...

Staff / Senior Lead Software Engineer Backend Platform

Job Description Behind every investment is a person with ambitions, motivations and values. While we know that every client is unique, they come to J.P. Morgan Personal Investing for the same reason: our straightforward and transparent approach to investing, and the trust that 150 years of J.P. Mo ...

Staff / Senior Lead Software Engineer Backend Platform

Overview Behind every investment is a person with ambitions, motivations and values. While we know that every client is unique, they come to J.P. Morgan Personal Investing for the same reason: our straightforward and transparent approach to investing, and the trust that 150 years of J.P. Morgan h ...

Software Engineer II Blockchain/ Digital Assets

As a Software Engineer II, you will join our London-based engineering team, contributing to the design, development, and delivery of Java, Python and TypeScript-based blockchain applications. Working alongside experienced engineers with decades of Markets expertise, you'll build production-grade bl ...

Software Engineer II Blockchain/ Digital Assets

As a Software Engineer II, you will join our London-based engineering team, contributing to the design, development, and delivery of Java, Python and TypeScript-based blockchain applications. Working alongside experienced engineers with decades of Markets expertise, you'll build production-grade bl ...

Software Engineer II Blockchain/ Digital Assets

As a Software Engineer II, you will join our London-based engineering team, contributing to the design, development, and delivery of Java, Python and TypeScript-based blockchain applications. Working alongside experienced engineers with decades of Markets expertise, you'll build production-grade bl ...

Software Engineer II Blockchain/ Digital Assets

As a Software Engineer II, you will join our London-based engineering team, contributing to the design, development, and delivery of Java, Python and TypeScript-based blockchain applications. Working alongside experienced engineers with decades of Markets expertise, you'll build production-grade blockc ...

Senior Integration Engineer

Senior Integration Developer / Lead Developer – IBM BPM / Camunda 6-Month Contract (Likely Extension) Location: London or Edinburgh (Hybrid – some onsite presence required) Our client, one of the UK’s largest banks, is seeking a highly skilled Senior Integrat ...

Senior Java Developer Capital Markets

Senior Java Developer – Capital Markets | Up to £125k | London (Hybrid) I’m currently working with a city-based financial services organisation looking to hire a Senior Java Developer to join their growing engineering team. This is a fantastic opportunity for someone looking t ...

Backend Engineer (Java/Kotlin) – Scale Global Payments

Wise is seeking a Backend Engineer to join their Recurring Payin team. This full-time role focuses on developing backend services and APIs that enhance their financial products. Candidates should have strong communication skills, experience in web application development, and knowledge of Java and Spring Boot. T ...

Java Developer

Reporting of the Role This role reports to Senior Java Developer. Accepting Applications Until 19 June 2026 Java Developer Overview We are in search of a backend engineer with an affinity for technical excellence and a keen interest in enhancing user experi ...

Senior Java Engineer — Hybrid London, Architecture Ownership

A leading fintech organization based in London is seeking a Senior Java Software Engineer to join their Treasury Engineering function. This hybrid role entails building systems to manage capital optimization while providing significant architectural ownership. Candidates should possess strong backend engineering ...

Principal Java Engineer – Payments Platform (Hybrid)

La-Fosse-1 is looking for a Principal Java Engineer for a 6-month contract based in Paddington. This hands-on role will involve designing and developing scalable backend services for secure payment transactions while being part of a dynamic engineering team. The ideal candidate will have expertise in J ...

Principal Java Engineer – Payments Platform (Hybrid)

La-Fosse-1 is looking for a Principal Java Engineer for a 6-month contract based in Paddington. This hands-on role will involve designing and developing scalable backend services for secure payment transactions while being part of a dynamic engineering team.The ideal candidate will have expertise in Ja ...

Principal Java Developer / Consultant

Principal Java Developer / Consultant (Java Spring Boot AWS) London / WFH to £120kAre you an experienced Java Developer, with technical project leadership and client facing skills?You could be progressing your career at a global technology consultancy.What's in it for you:</ ...

Principal Java Developer / Consultant

Principal Java Developer / Consultant (Java Spring Boot AWS) London / WFH to £120kAre you an experienced Java Developer, with technical project leadership and client facing skills?You could be progressing your career at a global technology consultancy.What's in it for you:</ ...

Senior Payments Backend Engineer — Equity (London)

Opulent Mind, based in London, is looking for a Senior Backend Engineer to build systems handling complex money movement. This role focuses on design, implementation, and support of backend services in Java, contributing to a team environment led by the CTO. Candidates should have over 5 years of engin ...

Java AWS Engineer Cloud Native Microservices Specialist

Cognizant is looking for a talented Java Developer to deliver high-quality services and cloud-hosted solutions based in the United Kingdom. The role involves developing Java microservices, implementing RESTful APIs, and building cloud-native solutions on AWS. Candidates should have strong Java development experi ...

Java & Kafka Developer — Hybrid, Learn & Grow

Capgemini is seeking a Java/Kafka Developer in London to build and support Spring Boot microservices and scalable, high-volume trade processing systems. You will focus on developing Java-based microservices with Kafka event streaming, collaborate with engineering teams, and enhance workflows. This role ...

Platform Backend Java Engineer (Hybrid, Fixed Term)

A tech consulting firm seeks a Backend Java Developer in Birmingham to build core backend services for a Data Fabric platform. Candidates should have strong experience with Java, Spring, and SQL transformations. This role involves working on data governance and performance-oriented backend solutions, ideally in ...

Senior Developer Angular & Java (Active SC Clearance)

Java Script Works is seeking a Senior Developer with strong expertise in Java v17, Angular, and Spring Boot to work in the public sector. The ideal candidate will demonstrate excellent development skills, particularly in JPA/Hibernate and REST APIs, along with experience in observability and monitoring. The role ...

FX Front Office Java Developer Low Latency Trading

Albany Beck is looking for a Java Developer to join a strategic modernization program aimed at migrating a business-critical FX trading platform from C++ to Java. The ideal candidate will work closely with traders and business analysts, developing high-performance low-latency applications in a fast-paced trading ...

HCL Commerce Backend Engineer — Azure & Scale

This role has a direct and measurable impact on the stability, scalability, and evolution of large‑scale digital commerce platform operating within consumer retail and digital‑first industries. The HCL Commerce Specialized Engineer plays a critical role in enabling always‑on customer journeys, and work on ...

Specialised Engineer

This role has a direct and measurable impact on the stability, scalability, and evolution of large‑scale digital commerce platform operating within consumer retail and digital‑first industries. The HCL Commerce Specialized Engineer plays a critical role in enabling always‑on customer journeys, and work on ...

Staff / Senior Lead Software Engineer Backend Platform

LONDON, United Kingdom Job Identification Job Category Software Engineering Business Unit Corporate Sector Posting Date 04/03/2026, 09:11 AM Locations 1 Cabot Square, London, E14 4QJ, GB Job Schedule Full time Job Descriptio ...

Senior Java Engineer — Equity Derivatives Risk & Pricing

A global hedge fund in London is seeking a skilled Java Developer with a strong background in Equity Derivatives. The successful candidate will design and implement robust risk systems while maintaining high-performance applications using Java and Spring Boot. Familiarity with containerization and cloud computin ...

Java Full Stack Developer (Angular/React) Banking, Hybrid

A global technology transformation partner in London is seeking a Java Fullstack developer proficient in AngularJS and ReactJS. The successful candidate will design and maintain scalable web applications, ensuring performance and responsiveness. Candidates should have strong experience in Java, Spring Boot, and ...

Sr. Java (Spring boot) Developer with API and Microservices expertise to support our insurance client's Enterprise Application Integration team

Sr. Java (Spring boot) Developer with API and Microservices expertise to support our insurance client's Enterprise Application Integration team Duration: 6 MonthsLocation: Toronto (Hybrid, 3x/week)We are looking for a Senior Software Developer for the Enterprise Appli ...

Java Developer Hybrid, Core Hours, Great Benefits

Pharmacy2U Ltd is seeking a Java Developer to contribute to the development of new medical services. This role encompasses hands-on development, working within a microservices architecture, and maintaining existing healthcare services. Candidates should have experience with Java, Spring Boot, and cloud environme ...

Senior Backend Architect — Global Cloud Native SaaS

A leading cybersecurity company in London is seeking an experienced Backend Engineer to architect and design systems for a massive distributed network. The role demands at least 6 years of developing high scale SaaS microservices, proficient in Java, Go, or Spring Boot, and fluent in PostgreSQL, MongoDB, and Red ...

Senior Java Backend Engineer Cloud Native Microservices

A leading financial consulting firm is seeking a Senior Backend Engineer to design and build cloud-native applications with Java and Spring Boot. This role involves delivering high-impact solutions for Tier 1 financial institutions and managing CI/CD pipelines. The ideal candidate should have strong expertise in ...

Senior Java Microservices Engineer (Blockchain) – London

A financial services client is seeking a Senior Back-End Developer skilled in Java Microservices to work primarily onsite in London. You will design and maintain critical back-end components in a microservices architecture, collaborating with teams to deliver high-performance applications. This role requires exp ...

Junior Java Full Stack Engineer — Hybrid/Remote

Cognizant is looking for a highly motivated Full Stack Java Developer in Greater London. This role involves working on enterprise-grade applications, utilizing Java, Spring Boot, REST APIs, and building responsive UIs with Angular/React. The ideal candidate will have a Bachelor’s degree in Computer Sci ...

Senior Backend Engineer Java/Python for Critical Systems

A global engineering consultancy is seeking a Backend Software Engineer to join their London team. The role involves designing and supporting high-reliability software platforms for complex systems, focusing on Java and Python development. Candidates should have a Bachelor’s or Master’s in Engineering, strong ex ...

Senior Lead Full Stack Engineer: Secure, Scalable Web Apps

A global financial services leader is seeking a Senior Lead Full Stack Software Engineer to contribute to its Cybersecurity team. This role involves designing and developing scalable web applications while ensuring quality and user experience. Candidates should have extensive experience in software engineering, ...

Software Engineer Platform

Join the Platform team to build the backbone of the Wise experience. You will work on scaling global payment infrastructure, improving system reliability, and automating processes to enable Wise's mission of money without borders. Focus on high-performance backend systems and distributed architecture. ...

Principal Platform Engineer: AI, Reliability & Leadership (Hybrid/Remote)

LexisNexis Risk Solutions is looking for a Principal Engineer to guide technical direction across teams, focusing on system modernization and AI applications. This full-time role involves collaborating with various teams to enhance reliability and scalability of platforms. Candidates should have extensive backen ...

Senior Java Developer Capital Markets (Path to Lead)

Senior Java Developer - Financial Services, Capital Markets sought by city based organisation. Essential 7+ years Java development experience in Financial Services, Capital Markets Clear progression to Head of Engineering role within 12 - 24 months Strong experti ...

Senior Java Developer Financial Services, Capital Markets

Senior Java Developer - Financial Services, Capital Markets sought by city based organisation. Essential 7+ years Java development experience in Financial Services, Capital Markets Clear progression to Head of Engineering role within 12 - 24 months Strong experti ...

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    Backend Developer Java Spring Boot Python Jobs in London Job Search Guide, Trends and Insights