1 to 25 of 30 Permanent Java Software Engineer Jobs in England

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 ...

Staff Software Engineer/Developer (Kotlin Java JVM) Hybrid WFH to £120k Would you like to progress your career in an impactful hands-on Software Engineer role working on Tech for Good? You could be joining a HealthTech Start-up, founded by two highly successful … shares package Impactful role with excellent progression opportunities Opportunity to work on tech for good to positively benefits society Your role: As a Staff Software Engineer you will collaborate with the CTO on the overall design and architecture of the products' tech stack, working on Greenfield applications. ...

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 ...

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 ...

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 ...

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 ...

Java Engineer – Mobile Platform London based 2 days a week in the office I'm currently supporting a leading Bank in their search for an experienced Java Engineer to join their flagship mobile platform. The system is built in Java on AWS with a strong … established team of talented Engineers in a company that have a strong emphasis on upskilling and a knowledge sharing culture. Requirements: • Strong understanding of Java and Microservices • Strong testing experience (TDD) using Junit • Experience dealing with highly scalable systems with high throughput • Good knowledge of AWS Does this sound ...

IMMEDIATE JOINERS !! Java Software Developer Location: London Work Mode: On-site Job Type: Full-time The Role We are looking for a Java Full Stack Developer who A Java Developer (2-5 years experience) designs, codes, tests, and maintains scalable Java applications, collaborating with teams … Development: Design and develop high-volume, low-latency applications for mission-critical systems. Back-End Excellence: Write clean, maintainable code using Java and the Spring Boot ecosystem. Front-End Innovation: Build responsive, user-friendly UI components using React, Angular, or Vue.js . Database Management: Design and optimize schemas ...

Senior Software Engineer - London Harrington Starr are working alongside a unique financial trading technology firm who are seeking 10+ Senior Java Developers to join their Core Development team and build out low latency systems. You absolutely have to have is a demonstrable interest in technology, precision … successful candidate will have strong appreciation of Linux, common design patterns, and be a practitioner of TDD. For the role of the Senior Java Engineer you will need the following skills: Strong knowledge of Core Java development, ideally in a low latency/real time environment Strong ...

Title : Java Backend Developer Location : Basildon, SS15 6GB, UK Duration : 7 Months Contract Mode : Hybrid (4 Days/Week) Position Description: We are seeking an experienced Senior Backend Software Engineer to join our Identity Management Services team, focusing on the core platform work that powers our identity … your deep engineering expertise to elevate the team's technical standards and foster a culture of excellence in backend engineering. Skills Required: Proficiency in Java - Java Framework - Web development - DevOps practices (CI/CD, version control) Security and identity management Monitoring and logging Relational databases Server-Side technologies ...

Java Software Engineer - Microservices | Payments | Enterprise-Scale Systems We’re looking for an experienced Senior Java Developer to join a high-performing engineering team delivering large-scale, business-critical platforms in a complex enterprise environment. This role is suited to someone who enjoys solving real business … problems through strong engineering practices, modern architecture, and clean, scalable code. You’ll work across the full software development lifecycle, partnering closely with product, architecture, QA, and production teams to deliver resilient, high-quality solutions. Key Responsibilities • Design, develop, and optimise secure, scalable Java-based applications • Build ...

Staff Software Engineer/Developer (Kotlin Java JVM) Hybrid WFH to £120k Would you like to progress your career in an impactful hands-on Software Engineer role working on Tech for Good? You could be joining a HealthTech Start-up, founded by two highly successful ...

Role: Java Engineer (Low Latency Systems) Experience: 4–12 years Key Skills & Technologies : Strong engineering mindset with expertise in Java Low latency programming techniques Google gRPC (Remote Procedure Call) GVP (gvproxy) , Terraform Kubernetes , GCR (Google Container Registry) , Podman 5 on RedHat 9 Test automation … flows (code coverage, mutation test coverage, mocking Java services in DB) Performance testing of development environments and generating performance graphs Mono‐repo testing (microservice to microservice) Performance testing tools: Gatling, BlazeMeter Responsibilities: Design and implement low‐latency, high‐performance Java applications. Build and maintain distributed systems leveraging Kafka ...

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 ...

Description 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 … multi-award-winning UK software company developing specialist desktop software used internationally w... ZIPC1_UKTJ ...

Start date: ASAP (Urgent!!) Location: London, UK On site Requirement: 3 times per week Contract Inside IR35 Software Development Engineer About the role Ours is a globally distributed, full stack java tech team and our building blocks consist of a set of Microservice components, backend APIs, Rich … robust Eventing Platform and Data layer components utilising a wide range of modern technologies including: Java, RxJava, SpringBoot Kafka, PostgreSQL and Couchbase Docker, Kubernetes, Jenkins, Azure DevOps, Splunk, AppDynamics, New Relic Azure Cloud We are responsible for the software throughout the lifecycle. We maintain a DevOps culture employing ...

Senior Java Developer London/Hybrid Capital Markets Technology A growing capital markets technology business is looking to hire a Senior Java Developer to play a key role in building and evolving a cloud-native post-trade platform used across client reporting, APIs, workflow management, and trading operations. … This is a hands-on engineering role with strong exposure across platform architecture, distributed systems, cloud infrastructure, and modern software engineering practices. The position also offers a genuine progression path toward Head of Engineering responsibilities over time. The Role You will work closely with Product, Client Services, and Engineering ...

PLEASE NOTE THAT YOU MUST hold ILR or British citizenship We’re looking for a talented and experienced Java Developer to join our rapidly growing team. You’ll work on exciting, high‐impact programmes, using modern engineering and architectural principles to design and build innovative solutions for a wide … help drive digital transformation and shape the future of services across the UK. What you’ll do Design, develop and maintain high‐quality Java applications Contribute across the full software development lifecycle Build and secure RESTful APIs using Spring Boot/Spring MVC Collaborate with engineers, architects ...

Overview Our client is a B2B software company in Bedford looking to hire two Software Engineers. You'll focus on new feature development, modernising the legacy stack and embedding AI-enabled development. 👉 Company : Profitable, global customer base, £2mn+ revenue 💰 Salary : £55-85k 📍 Location : Bedford, 2 days onsite …/3 days WFH 💻 Tech : Java, Spring, AWS, React, TypeScript, AI Why apply? AI : Join a forward thinking tech team leveraging AI to improve development workflows and productivity Autonomy : Take ownership of key features and projects Learning : Great opportunity to modernise their stack and implement new tech and tools ...

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 ...

most ambitious engineering and digital transformation programmes? About The Role: We’re expanding our Technology & Transformation practice and are looking for an experienced Java Developer to help design and deliver innovative, secure, cloud‐native solutions for our clients across multiple industries. 🔧 What you’ll be doing Designing, developing … maintaining high‐quality Java applications Building and securing RESTful APIs using Spring Boot/Spring MVC Collaborating in cross‐functional agile teams to deliver client solutions end‐to‐end Contributing to architecture and system design , including non‐functional requirements Supporting live services, troubleshooting production issues, and improving observability Mentoring ...

13+ billion. For more information on how we process your personal data, please refer to HCLTech’ s Candidate Data Privacy Notice. Must Have – Java, Low-latency, financial services background, and hands on coding skills "Our app relies heavily on async development, we use vertex. it takes significant time … have significant intuition with that, and some modern messaging like Aeron or ZeroMQ." DETAILED RESPONSIBILITIES- - Lead the development, testing, and maintenance of low-latency Java applications. - Collaborate with cross-functional teams to gather requirements and design system architecture. - Optimize application performance and troubleshoot latency issues. - Mentor junior developers ...