265,165+ Java Software Engineer Cloudnative Api Security Jobs in UK — Top Companies Hiring June 2026

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Senior Java Engineer — Credit Risk Platform

Citigroup Inc. is seeking a Senior Java Developer in Greater London. This senior-level position involves leading application systems analysis and programming activities and delivering advanced technology projects. You will work closely with the Risk organization and provide expertise in the software developme ...

Senior Backend Engineer | Java, Spring & Microservices

Backbase is seeking a Senior Backend Engineer in Cardiff, United Kingdom. This role involves working with Java, Spring, and Microservices to deliver high-quality solutions. The ideal candidate will have extensive experience with integration patterns and a proactive approach to solving complex problems. <p ...

Backend Java Engineer APIs, PostgreSQL & Cloud

som3 Recruitment is seeking an experienced Back End Developer based in Basingstoke, UK. The role involves transitioning software development from an outsourced model to in-house. You will work with a team to design and implement new back-end features in Java while ensuring documentation consistency for RESTfu ...

Java Backend Engineer — Scalable Fulfilment Platform

Tesco - Corporate in Welwyn Garden City is seeking a dedicated Full-Time Engineer to develop robust backend services for their Fulfilment platform. You will focus on building Java-based microservices and APIs to drive operational success in fulfilment operations. Successful candidates should have exper ...

Java & React Engineer – Hybrid (London Banking)

A growing Consultancy in London seeks a Java/React Developer for a hybrid role focused on a Banking project. The successful candidate will lead engineering efforts across teams, focusing on software design, implementation, and maintenance. They must write high-quality, modular code and possess experience with Ja ...

Senior Backend Engineer—Java, Cloud Microservices

JPMorgan Chase is looking for a Software Engineer III to join their International Consumer Bank team in London. This role involves developing cutting-edge cloud-native applications while ensuring reliable and secure systems. Candidates should have a solid background in Java, cloud technologies, and a passion for ...

Senior Java Engineer Global KYC & Onboarding

A global technology company is seeking a Senior Software Engineer to join its Global KYC and Onboarding squad. You will own the technical roadmap for significant projects, ensuring compliance while providing clean APIs and solutions. The ideal candidate has over 4 years of experience with Java, a strong product ...

Principal Java Engineer: Remote Lead Architecture

A technology consultancy firm in Greater London is seeking a Principal Engineer specializing in Java. You will drive innovation, lead technical teams and contribute to cutting-edge solutions. Candidates should exhibit technical leadership, software architecture, strong project management skills, and a collaborat ...

Senior Java Backend Engineer – Hybrid (Edinburgh)

A global technology enterprise in Edinburgh is seeking a Senior Java Backend Developer with over 15 years of experience. The role requires strong proficiency in Java 17, Spring Boot, and knowledge of cloud platforms like GCP. This position offers a hybrid work environment with 2 days onsite and 3 days remote. Th ...

Java Electronic Trading Engineer – Front office

Java Electronic Trading Engineer – Front office London – Hybrid Java, Low Latency, FIX, SBE, Aeron, Linux, Docker, Kubernetes, AWS The company This is an unmissable opportunity for an experienced Java Electronic Trading Engineer to join one of the leading institutional d ...

VP Java Engineer – Trading & Securities Lending

A global financial institution is seeking a highly motivated software engineer for their Equities Technology team in London. The role requires 6-10 years of experience in application development with strong Java skills. Responsibilities include resolving complex problems, providing expert guidance in application ...

Java Microservices Engineer Hybrid, Cloud & AWS

Accenture is seeking a Java Developer in Newcastle upon Tyne to provide innovative solutions across a variety of industries while working in a hybrid environment. The ideal candidate will have strong experience with JDK 11+, Spring Boot, and enterprise middleware platforms. Offered is a competitive sal ...

Senior Java Automation Engineer, FX eTrading

Engineer the future of global finance. At Citi, our Tech team doesn’t just support finance – we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+ countries operating at a scale few can match. From deploying advanced AI to helping shape global markets, we ...

Java Engineer: Algorithmic & High Performance Systems

Millennium is seeking a Java Developer to join our high-performing Algorithmic Development team in London. The ideal candidate must possess strong hands-on Java skills with an understanding of concurrent and multi-threaded application environments. This is a full-time role that presents an excellent opportunity ...

Java Backend Engineer: Scalable Microservices & Cloud

InfoSum is seeking an experienced Java Engineer to design and maintain scalable backend systems for our data collaboration platform. You will work collaboratively with cross-functional teams to deliver high-performance solutions that are secure and reliable. The position offers a competitive salary bas ...

Senior Platform Engineer Java Microservices (Hybrid)

A leading streaming platform is looking for a senior technical lead to design and develop scalable web applications. This role requires 5+ years of experience in software architecture, solid skills in Java and Python, and a proactive approach to project management. The position entails ownership of projects and ...

Lead Java & AWS Engineer – Trading OMS

A leading financial services firm in Glasgow is looking for a passionate Senior Software Engineer to join their Asset Wealth Management team. You will focus on developing cutting-edge Order Management Systems on both public and private cloud environments. This role emphasizes cloud technology integration and agi ...

Lead Java Engineer for Algorithmic Trading

J.P. MORGAN is seeking a Lead Software Engineer to join their Options Algorithmic Trading team. In this role, you will design and optimize algorithmic trading engines, contributing to the development of secure and scalable solutions. The ideal candidate will have advanced proficiency in Java, experienc ...

Principal Java Engineer SpringBoot/AWS (Hybrid)

Client Server is looking for a Principal Software Engineer / Developer to work in London with a salary of up to £120k. In this role, you will lead client projects, primarily in the financial services sector, focusing on legacy systems migration to AWS and implementing CI/CD pipelines. The position offe ...

Java Backend Engineer Cloud & Distributed Systems

Job DescriptionMy client, a global technology company specialising in secure communications and enterprise software solutions, is hiring a Backend Software Engineer to join an established engineering team based in Belfast. This is an exciting opportunity to work on business-critical backend ...

Junior Java Microservices Engineer (Spring Boot)

JD ROSS is seeking a Java Developer in Newcastle upon Tyne to create modular, maintainable services using Java Development Kit (JDK 11) and Spring Boot. The successful candidate will work on enterprise middleware platforms like WebLogic Server and deploy solutions in public cloud environments such as AWS. </p ...

Senior Java Engineer Platform Team (London)

ITRS is seeking a Senior Java Software Developer to join their London team. This full time position involves reporting to the Engineering Manager and working within the Platform Team as part of a global Engineering organization. The company, located in Greater London, provides risk mitigation solutions to major ...

Java Backend Engineer – Incident Response & Reliability

A technology solutions firm in Greater London seeks a skilled 3rd Line Back End Developer to tackle complex issues in live systems. The role requires a strong background in Java and server environments, with responsibilities that include diagnosing defects, developing solutions, and collaborating with various te ...

Senior Java Engineer: Microservices, Spring & Cloud

A leading recruitment firm is seeking a Senior Recruitment Consultant to focus on Java application design and development. The role requires hands-on experience with Java, knowledge of DevOps principles, and familiarity with cloud services. Essential skills include expertise in Spring Framework, Git, and microse ...

Senior Backend Engineer Contacts Platform (Java)

A global technology company is seeking a Senior Software Engineer II for the Contacts Team in Greater London. The role involves driving technical solutions for recipient management in a collaborative agile environment. Candidates should possess strong Java experience and a proven record with distributed systems. ...

Java Backend Engineer BPMN & Workflow Orchestration

iXceed Solutions is seeking a skilled developer in Burgess Hill, England, to design, develop, and maintain business process automation solutions using Camunda BPM. The ideal candidate will build scalable backend applications with Java and Spring Boot and integrate workflows with external systems. Key r ...

Java Backend Engineer for Subsurface APIs

Halliburton Energy Services in Abingdon seeks a Java developer with over 3 years experience for their Neftex Technical Services Team. This role involves developing subsurface evaluation solutions and requires attendance at the Abingdon office at least three days a week. Successful candidates will work ...

Senior Java Engineer Remote Trading Platform

Role, Inc. is looking for a seasoned developer to enhance its cutting-edge derivatives exchange platform. This role requires 5+ years of Java programming experience, ideally in financial services, to contribute to full-stack project lifecycle. Successful candidates will enjoy benefits like competitive ...

Senior Backend Engineer: Java & Cloud Leader

Capital One in London is looking for a Staff Software Engineer - Back End to lead technical strategies and innovation across teams. The role involves owning the technical direction, mentoring engineers, and representing Capital One in technical forums. Ideal candidates will have deep expertise in Java, system de ...

End to End Java Cloud Engineer

Technologies Backend: Distributed, event-driven core Java (90% of the code-base), MySQL, Kafka Frontend: Javascript, Vue.js Deployment: Kubernetes, Nomad Data Analytics: Python & Jupyter notebooks, Parquet, Docker Testing: ...

Java Electronic Trading Engineer – Front office

Java Electronic Trading Engineer – Front officeLondon – HybridJava, Low Latency, FIX, SBE, Aeron, Linux, Docker, Kubernetes, AWSThe companyThis is an unmissable opportunity for an experienced Java Electronic Trading Engineer to join one of the leading insti ...

Lead DevOps Engineer

Security Clearance Required: Active, live SC Clearance or DV Clearance (Mandatory) Position Type: Permanent Lead DevOps Engineer (Hybrid – London) Location: London (Hybrid: 3 days per week on-site) Role & Responsibilities ...

Senior Backend Engineer: AI Secure Integrations

Harmonic Security, Inc is seeking a Backend Engineer in Greater London to design, build, and maintain scalable integrations, leveraging AI to enhance security systems. In this hands-on technical role, you will implement core logic, build APIs, and ensure smooth operation of data security platforms. The ...

Software Engineers

Position Description: CGI was recognised in the Sunday Times Best Places to Work List and has been named one of the ‘World’s Best Employers’ by Forbes magazine. We offer a competitive salary, excellent pension, private healthcare, plus a share scheme (3.5% + 3.5% matching) which makes you ...

Software Engineers

Position Description: CGI was recognised in the Sunday Times Best Places to Work List and has been named one of the ‘World’s Best Employers’ by Forbes magazine. We offer a competitive salary, excellent pension, private healthcare, plus a share scheme (3.5% + 3.5% matching) which makes you ...

Java Engineers All Levels

Java Software Engineer - Multiple Roles (Junior to Senior) Want to work with one of Northern Ireland's fastest-growing tech companies?Looking for a team where your input genuinely shapes the architecture and direction of projects?How about working on greenfield builds using ...

Software Development Engineer III Customer Fulfilment

We are in the process of building and rolling out our next generation, dynamic, scalable, and resilient Fulfilment platform for Tesco, to address both manual, and robotic powered automate fulfilment operations, across all the customer order fulfilment locations. This highly optimized and continuously impro ...

Lead Full Stack Engineer (.Net, Vue/React) Fully Remote CET Timezone

Overview Lead Full Stack Engineer (.Net, Vue/React) - Fully Remote CET Timezone. This role offers the opportunity to lead the development of a cutting-edge SaaS platform for the insurance industry. As Lead Full Stack Engineer, you will guide both front-end and back-end development, ensuring scalab ...

Senior Developer (Typescript, Java or Python)

MCS Group is delighted to be partnering with a growing consultancy as they establish a brand-new engineering presence in Belfast. Our client is a high-growth cloud, data, and AI engineering consultancy delivering mission-critical solutions for enterprise and scaling clients across modern cloud ecosystems. ...

Senior Developer (Typescript, Java or Python)

MCS Group is delighted to be partnering with a growing consultancy as they establish a brand-new engineering presence in Belfast. Our client is a high-growth cloud, data, and AI engineering consultancy delivering mission-critical solutions for enterprise and scaling clients across modern cloud ecosystems. ...

Full Stack .NET Developer Azure Cardiff

Join to apply for the Full Stack .NET Developer - Azure - Cardiff role at TieTalent 1 day ago Be among the first 25 applicants Join to apply for the Full Stack .NET Developer - Azure - Cardiff role at TieTalent Full S ...

AI Enabled Full Stack Engineer

Software Engineer - AI Enabled Full Stack Engineer Location: Belfast Level: Specialist Salary: Competitive (based on experience) Role Overview: Build, own, and evolve next-generation applications that leverage AI tooling, delivering client solutions across the Health and P ...

Senior Engineer (Full Stack)

Job Overview TP ICAP has partnered with Amazon Web Services (AWS) to build the next generation of the Fusion Platform and make it a global market infrastructure. This role will be working in a new team to build out a new platform based on the latest technology and architecture. You will be working ...

Staff Software Engineer, Code Search

Locations In this role you can work from Remote, United Kingdom Overview GitHub is shaping the future of software development in the age of AI agents — and search is at the heart of it. As GitHub's lexical and semantic code search engine, Blackbird powers context retrieval for b ...

Integration Engineer

AWS Data & API Integration Engineer/Architect Location: London customer site – 1/2 days p/week on site Salary: Up to £105k DoE plus bonus Clearance: Active SC preferred - can sponsor if not currently held (British passport required) </l ...

Integration Engineer

AWS Data & API Integration Engineer/Architect Location: London customer site – 1/2 days p/week on site Salary: Up to £105k DoE plus bonus Clearance: Active SC preferred - can sponsor if not currently held (British passport required) </l ...

Integration Engineer

AWS Data & API Integration Engineer/Architect Location: London customer site – 1/2 days p/week on site Salary: Up to £105k DoE plus bonus Clearance: Active SC preferred - can sponsor if not currently held (British passport required) </l ...

Senior Node.js Engineer — Build Scalable Backend & APIs

A leading sports and gaming marketing company in Greater London is seeking a Senior Software Engineer to take charge of backend services and API integration. The role involves leading technical decisions, shaping product features, and ensuring scalability. Candidates should have hands-on experience with large-sc ...

Lead Python Engineer Test Automation & Cloud

A global financial services provider in Glasgow is hiring a Lead Software Engineer to join their agile team. This role requires expertise in Python SDET, testing processes, and the ability to execute creative software solutions. Candidates should have significant experience in cloud and API hosting, as well as p ...

Senior Software Engineer, Ads Analytics & Data Pipelines

Roku, Inc. is seeking a Senior Software Engineer in Cambridge, UK. This hybrid role requires a candidate with 8+ years of software and data engineering experience, focusing on API development using Spring Boot and big data technologies like Apache Spark and Airflow. Responsibilities include designing scalable sy ...

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    Java Software Engineer Cloudnative Api Security Jobs in United Kingdom Job Search Guide, Trends and Insights