Jobs for java backend developer at London

Join a dynamic energy provider dedicated to sustainable solutions in the UK. We seek enthusiastic and resourceful Backend Python Engineers at senior levels who are passionate about crafting exceptional products. Initially it will be a three-month contract but there is potential for it to be extended. The role is Hybrid, with one day a week being based in...

Citi is seeking an experienced software engineer to design, develop, and maintain high-performance Java services. This role will involve applying modern backend design principles, including Domain-Driven Design, while collaborating with cross-functional teams to address complex business needs.Successful candidates will bring strong Java expertise,...

The Opportunity You will join a high-impact development squad building commercial offerings on top of the thriving open-source Backstage framework. You will design and build backend systems, APIs, and developer portals that elevate the developer experience across external commercial clients and internal engineering teams alike. Your Impact Backend & API...

Role SpecificsDevelopment of the token exchange backend, development of the investor profile backend, crowd-funding portal development, analytics dashboard development.Role SpecificsDevelopment of the token exchange backend, development of the investor profile backend, crowd-funding portal development, analytics dashboard development.Duties And...

**Backend Software Engineer (Java / Python / C#) – Investment Banking** **£80,000–£95,000 + bonus & benefits | West London | Permanent | 5 days onsite** We’re hiring a Mid-Level Backend Software Engineer to join the London technology team of an investment bank, building mission-critical systems supporting global payments and financial...

A fast-growing startup in the UK is seeking a Software Engineer (Java Backend) to join their talented engineering team. You will design and build high-performance systems that power an innovative wealth management platform. The role requires 6+ years of backend experience, strong Java skills, and familiarity with microservices and cloud environments. Join a...

Orbital Industries is an AI Industrial company, with frontier AI embedded at every step in the production of critical physical products - from creating advanced materials to engineering and manufacturing.Every Orbital Industries product is developed using CurieOS, our AI operating system, uniting AI-automated hardware engineering with AI-designed material...

Java Developer - IBM OpenPagesLocation: London (Hybrid: 3 days on-site) Type: Permanent / FTEWe are seeking a Full-Stack Java Developer with deep, hands-on expertise in IBM OpenPages to design and build custom enterprise GRC solutions. If you know exactly when to use a built-in Calculation versus a custom Java Trigger, this role is for you.What You Will...

About EDITEDEDITED is the world’s leading AI-driven retail intelligence platform. We empower the world’s most successful brands and retailers with real-time decision making power. By connecting internal business and external market data, EDITED infuses intelligence into every retail decision. We help retailers increase margins, generate more sales, and...

Capco is seeking a Senior Backend Engineer (Java) in London to design and build cloud-native backend services using Java, Spring Boot, and AWS. You will influence backend architecture, champion best practices, and contribute to modern banking technology while embracing AI-enabled development practices.You will work in Capco's Technology & Engineering team,...

Company DescriptionVersion 1 has celebrated 30 years in business and continues to be trusted by global brands to deliver technology and transformation solutions that drive customer success. Our deep expertise enables our customers to navigate the rapidly evolving technology landscape. We foster strong partnerships with global technology...

Senior Backend Developer (f/m/x) with Business Analysis & AI Expertise Engagement Details Full-time contract (5 days per week). Start: ASAP until end of December 2026 (extention possible) Remote working with occasional onsite presence in Vienna, when required. Candidates performing onsite work in Austria should be willing and able to comply with Austrian tax...

Senior Backend Developer with Umbraco C# .netWorking as part of the Digital team, you'll be responsible for the ongoing development and improvements to an eCommerce website as well as other internal applications for this award-winning Travel Company.You will be responsible for:Leading the eCommerce web and application development from a technical...

Java Engineer - Contract Opportunity at Leading Investment BankContract End Date: December 31st, 2026Location: London (5 days per week)Day Rate: Competitive rate, inside IR35 via Rockford PayrollWe are seeking a highly skilled and experienced Senior Java/Python Engineer to join our dynamic team on a contract basis...

Our client is in the Insurance sector and is looking to grow their team with a Java Senior Developer. This role will have a big focus on Agentic Development and is 2 days a week in London. Description This role is primarily Java-centric - you will design and build cloud microservices on the platform - with the expectation that you actively apply AI tooling...

Role : Senior Java Developer ( Hospitality Domain)Skills: Java and RDMS (Oracle if possible), Rest, API, (Azure, AWS, or GCP) and CI/CD and microservicesLocation: London, UK (2-3 days/week onsite)Type: PermanentImportant : Hospitality solutions such as Central Reservation Systems, Property Management Systems, Payment systems / Payment gatewaysJob...

OverviewVersion 1 has celebrated 30 years in business and continues to be trusted by global brands to deliver technology and transformation solutions that drive customer success. Our deep expertise enables our customers to navigate the rapidly evolving technology landscape. We foster strong partnerships with global technology leaders including Microsoft,...

We’re looking for a Java Swing Developer to join a team working on a high-performance desktop trading platform. Working on a mission-critical system that supports FX Cash, deposits, futures, swaps, and more. The platform is rich in functionality, handles heavy loads with low latency, and underpins key trading and sales workflows.You’ll help maintain and...

Discover your future at CitiWorking at Citi is far more than just a job. A career with us means joining a team of more than 230,000 dedicated people from around the globe. At Citi, you’ll have the opportunity to grow your career, give back to your community and make a real impact.Job OverviewEngineer the future of global finance. At Citi, our Tech team...

Location: UK (Hybrid / Onsite as required) Experience: 5+ years Role Type: Fixed Term Contract Overview We are developing a scalable Data Fabric platform that ingests, transforms, and serves trusted data products across multiple domains. The platform spans on‑premise and cloud environments and underpins a wide range of analytics and operational...