1 to 25 of 37 Java Software Engineer Jobs in the UK

Senior Java Software Engineer - Java Developer, Python, AWS, MySQL, NoSql, REST APIs, Microservices, Machine Learning, Artificial intelligence (Hybrid - 3 days a week in the office - Notting Hill) Description for the Senior Java Software Engineer role:- You will be joining a fast-growing, research … machine learning techniques. My client is revolutionising their industry with a track record of building things that others have ruled out as impossible. The Java Software engineer will join a very bright, talented team of engineers with the guidance of technologists who have help build up some ...

Principal Software Engineer/Developer (Java SpringBoot AWS) London/WFH to £120k Are you an experienced Java focussed Software Engineer, with technical project leadership and client facing skills? You could be progressing your career at a global technology consultancy. As a Principal Software Engineer you will lead client projects, often long term technical transformations, designing, developing and delivering a range of projects for clients, mainly within the financial services sector and with a focus on migrating legacy systems to AWS and introducing CI/CD pipelines and cloud deployments. ...

Build and improve real-world Java desktop software in a small, influential engineering team where your technical decisions, ideas, and leadership will genuinely matter. Hands-on Java desktop software role focused on Swing-based commercial applications - not web development. About Us Semantics 21 is a multi … award-winning UK software company developing specialist desktop software used internationally within public safety and investigative environments. Our technology helps organisations process and review digital evidence more effectively, supporting work that can have genuine real-world impact in areas including child protection and public safety. We are growing ...

Lead Software Engineer (Java/Typescript) We are looking for a highly skilled Lead Software Engineer to take ownership of one of our clients core platform systems. In this pivotal role, you will guide a talented engineering team, ensuring the stability, performance, and ongoing evolution … will help shape the technical roadmap and ensure our systems remain scalable, reliable, and innovative. Key Responsibilities Technical Leadership: Provide technical direction across the software development lifecycle, ensuring alignment with internal standards and best practices. Hands-On Coding: Contribute directly to the codebase and support sprint goals with high ...

member of myGwork – the largest global platform for the LGBTQ+ business community. Please do not contact the recruiter directly. Senior Full Stack Software Engineer (Java/React) Would you like to help create products to support the sharing of scientific knowledge? Do you enjoy collaborating to solve … complex technical problems? About the team: Our dynamic Agile Teams deliver the technology that facilitates researchers to publish quality scientific research. As a Software Engineer, you will build capabilities to improve the quality of scientific research About the role: As a Senior II Software Engineer ...

inclusive employer and a member of myGwork – the largest global platform for the LGBTQ+ business community. Please do not contact the recruiter directly. Java Software Engineer Would you like to help create products to support the sharing of scientific knowledge? Do you enjoy collaborating to solve complex … technical problems? About the team: Our dynamic Agile Teams deliver the technology that facilitates researchers to publish quality scientific research. As a Software Engineer, you will build capabilities to improve the quality of scientific research. About the role: As a Software Engineer, you will build capabilities ...

Senior Software Engineer - Java/Spring/Full stack (Fully Remote) Location: Fully Remote Salary: £50,000 to £60,000 plus strong wider benefits package About the role Our client, a digital consultancy delivering into central government, are looking for a Software Engineer to join … improving how services operate at scale, working closely with client stakeholders and other teams. This is a hands-on full stack role using Java, JavaScript, Spring and AWS in a fast-moving, stakeholder-heavy environment. Key responsibilities Design, build and improve digital services within the DRS workstream Deliver full ...

bring the most relevant and critical information about each manuscript directly to our editors' fingertips. About the role: As a Senior Java Software Engineer II, you will build capabilities to support scientific researchers through the process of submitting the research for publication. We are continually evolving … technology in response to researchers' needs and to the ever-changing technical landscape, including the use of AI technologies Responsibilities As a Senior Java Software Engineer you will be responsible for: Designing, developing and deploying applications in a cloud-hosted distributed system to build our next-generation ...

Role Senior Software Engineer Java .NET FTC Manager Lead Development Manager Location Hybrid Role Overview We are looking for 3 experienced Senior Developers, to support the ongoing evolution of the TMS platform, contributing to the development of modern, scalable solutions within a complex transport and logistics environment. … role will involve designing, developing, and enhancing business-critical applications across a modern technology stack including Java 1721, Spring Boot 3.x, Angular 16/17, and Flutter/Dart. Working as part of a collaborative engineering team, you will help deliver high-quality software solutions that support operational ...

Java Software Engineer (FTC) Our client is a tier-one global financial institution currently executing a major, multi-year modernisation of its core capital markets infrastructure. This initiative centers on re-architecting a mission-critical workflow engine to scale throughput by an order of magnitude while embedding … advanced AI and intelligent automation. We are onboarding a high-caliber Java Systems Engineer on a Fixed-Term Contract (FTC) to act as a core technical anchor for this transformation. Role Overview Operating within Global Technology & Operations, you will drive the architectural evolution and optimization of a high ...

inclusive employer and a member of myGwork – the largest global platform for the LGBTQ+ business community. Please do not contact the recruiter directly. Software Engineer (Java) Position Description At CGI, we deliver innovative technology solutions that help some of the world's leading organisations transform … they operate. As a Software Engineer supporting one of our key accounts in Scotland, you'll contribute to the development of scalable, high-performance applications that support critical business services and customer experiences. Working within collaborative Agile teams, you'll help build modern cloud-ready solutions using Java ...

Senior Java Engineer - Permanent Salary: 55k-65k Working Arrangement: Fully Remote Tech Stack: Java, Spring Boot and Cloud Platforms(AWS, Azure and GCP) Desirable - Python and JavaScript I am currently working with a leading software software consultancy working with the government for a Senior Java Engineer. This role involves mentoring junior engineers, collaborating with cross-functional teams, and driving the adoption of best practices in software development. Essential Proven experience in full-stack software development, including design, development, testing, and deployment. Significant hands on experience with Java, Spring Boot and Microservices. ...

Senior Software Engineer (Java/Kotlin) Manchester (Hybrid - 2 days onsite per week) Contract until end of 2026 £731.25/day Umbrella A global travel technology organisation is building a brand-new connectivity platform and requires a Senior Software Engineer to help shape the architecture … services and integrations connecting external providers into a high-volume marketplace platform. What you'll be doing Designing and building scalable backend services using Java and/or Kotlin Leading system design discussions and driving technical decisions Building integrations with third-party APIs and external platforms Developing resilient distributed ...

client is a growing, mission-led consultancy delivering secure and modern software solutions across the UK Government and Defence sectors. They are now looking for an experienced Principal Full Stack Software Engineer to join their collaborative and forward-thinking engineering team. This is an exciting opportunity … senior engineer who enjoys staying hands-on across both back-end and front-end development while also helping shape technical direction, mentoring teams, and driving engineering best practice. You will work on secure, scalable cloud-native platforms, modern web applications, APIs, and digital services that support meaningful and high ...

inclusive employer and a member of myGwork – the largest global platform for the LGBTQ+ business community. Please do not contact the recruiter directly. Senior Software Engineer II (Java/Spring) Are you passionate about building scalable, high-performance data-driven applications? Do you enjoy turning complex datasets … scientific community so they can collaborate more effectively, work smarter, and deliver quality research more quickly. We're looking for an innovative, passionate Senior Software Engineer II to work as part of the teams building and enhancing our platform to deliver intelligent, scalable solutions that create real value ...

Software Engineer - Java/Back End Hybrid - 2 days per week in the office Java, PostgreSQL, API We are looking for an experienced Back End Developer with excellent Java, PostgreSQL and API skills due to software development moving from an outsourced model … highly involved with knowledge transfer, including code walkthroughs, pairing sessions, and documentation reviews with the outgoing external team. Gain understanding of the current Java application architecture - service boundaries, dependency injection patterns, build system, and deployment configuration. Design and implement new back-end features, enhancements, and bug fixes in Java ...

Software Engineer - Java/Back End Hybrid - 2 days per week in the office Java, PostgreSQL, API We are looking for an experienced Back End Developer with excellent Java, PostgreSQL and API skills due to software development moving from an outsourced model … highly involved with knowledge transfer, including code walkthroughs, pairing sessions, and documentation reviews with the outgoing external team. Gain understanding of the current Java application architecture - service boundaries, dependency injection patterns, build system, and deployment configuration. Design and implement new back-end features, enhancements, and bug fixes in Java ...

Hiring: Senior Java & AI/LLM/RAG Engineer (100% Remote, UK) Location: Remote (Must be resident and legally authorized to work in the UK) Type: Full-time Stack Focus: Java 17+, Spring AI, LLMs, Deep Java Library, RAG Architecture, AWS cloud Are you a seasoned … Java engineer who has crossed the bridge into the world of Artificial Intelligence? Do you know how to take large language models (LLMs) and turn them into highly secure, production-grade, context-aware enterprise applications using Retrieval-Augmented Generation (RAG)? If you want to sit at the intersection ...

inclusive employer and a member of myGwork – the largest global platform for the LGBTQ+ business community. Please do not contact the recruiter directly. Software Engineer III (Java/Spring) Are you passionate about building high‐performance backend systems? Do you thrive on solving complex engineering challenges with … Java and Spring? About the team: Our team is dedicated to unlocking the rich knowledge embedded within Elsevier's content through our semantic data platform; this empowers researchers, clinicians, and innovators worldwide to gain new insights, make informed decisions, and accelerate progress across research, healthcare, and life sciences. ...

Staff Software Engineer | Enterprise Technology Hub Location: Glasgow (Hybrid - City Centre) Role Type: Contract-to-Permanent Sector: Global Tier 1 Institutional Technology The Opportunity We are seeking a high-caliber Staff Software Engineer to spearhead critical modernization initiatives within a global technology hub. This role … hosting platforms from legacy systems to Kubernetes-based environments on GCP or AWS. Full-Stack Delivery: Architect and maintain robust, scalable applications using Java 17+ and Angular . Data Modernization: Oversee complex data migrations, including Elasticsearch upgrades (v2 to v8) and transitioning operational databases from Oracle to PostgreSQL. Stakeholder ...

Senior Software Engineer - (Java, Pricing API,) - 5 days - Retail - London Day rate: £400 - £500 (inside IR35) Duration: 6 months On site: 5 days per week Start: Now My client is looking for a Senior Java Developer with 8 - 15 years experience to join the team … building resilient systems at scale, this could be a great fit. What You'll Be Doing Designing and building scalable backend systems using Java and the JVM ecosystem Developing clean, maintainable code from product requirements Applying TDD/BDD practices and modern engineering principles Building and maintaining cloud-native ...

Java Developer - multiple roles £550-570/day Inside IR-35 6 month contract Active SC required Remote with occasional travel to London for client meetings only - expensable We are looking for experienced fullstack Java Software Engineers to support projects across UK Government and Law Enforcement. … work in multidisciplinary teams delivering secure, reliable and scalable systems. The role is hands-on and focused on building high quality software using modern engineering practices. What you'll do You'll design, build and maintain Java based microservices, applying test driven development and following established engineering standards. ...

Java Software Developer £600/day Inside IR-35 for an initial 6 months with extension likely London - 3 days per week on site Active SC Clearance essential We're looking for a Java developer to join an established engineering team working on backend services hosted … Azure. The role focuses on building and supporting Java applications and APIs, using VS Code as a primary development environment. You'll work closely with other engineers across backend, frontend, and DevOps, contributing to cloud-based systems. About the role Java backend development role Focus on services ...

Java Developer – · Over 9-12+ years of experience in Java development, with a focus on microservices architecture. Responsibilities - · Lead the design, development, and deployment of microservices using Java and Spring Boot. · Develop and maintain scalable, high-performance microservices. · Integrate microservices with various databases, APIs, and third … through unit testing, code reviews, and continuous integration. · Identify and resolve performance issues, bugs, and other technical challenges. · Create and maintain technical documentation for Java microservices architecture and design. Skill set · Java Proficiency: Proficiency and command of Java, including object-oriented programming, design patterns, and core APIs ...

Build and improve real-world Java desktop software in a small, influential engineering team where your technical decisions, ideas, and leadership will genuinely matter. Hands-on Java desktop software role focused on Swing-based commercial applications - not web development. About Us Semantics 21 is a multi … award-winning UK software company developing specialist desktop software used internationally w click apply for full job details ...