1,551 to 1,575 of 2,006 Java Jobs in the UK

Lead Software Engineer – Java (Digital Consultancy) – Leeds – Hybrid – up to £110K We're working with a leading UK digital consultancy, rapidly growing across the UK with a headcount of 500+. They combine technical excellence with a culture that genuinely puts people first, delivering innovative solutions across finance, e-commerce, gaming, and more. This is a high-impact leadership role for … a Lead Java engineer ready to shape technology strategy, manage engineering teams, and deliver complex, mission-critical systems for household-name clients. The Role As a Lead Software Engineer, you will: • Take ownership of the design, architecture, and delivery of scalable, high-performance Java-based systems. • Lead technical direction across multiple projects, ensuring best-in-class coding standards, testing, and … innovation and continuous improvement in development processes, cloud adoption, and CI/CD pipelines. • Act as a trusted technical advisor, balancing architectural vision with delivery realities. Tech Stack • Backend: Java, RESTful APIs • Cloud & Deployment: AWS, CI/CD pipelines • Other: Third-party API integrations About You • Extensive experience in Java backend development and API architecture. • Proven track record in leading More ❯

Graduate/Junior Developer, Python, Linux, C#, Java - London (Teck stack: Graduate/Junior Developer, Python, Linux, C#, Java, .NET 9, C#, J2EE, Agile, TDD, BDD, Graduate/Junior Developer) Since 2006 our client's revolutionary marketing software platform has been helping businesses all over the world to attract, engage, and delight customers by delivering inbound experiences that are relevant … helpful, and personalized. Having recently launched in the UK, they looking to hire Graduate/Junior Developer (Python, Linux, C#, Java)) to become a part of their ever-growing family. They believe that individual developers are in the best position to make decisions about what should be created, and how it should be built. Within their setup those decisions are … roles would be suitable Graduate/Junior Developer who have recently graduated from university and have a basic understanding of any of the following technologies: Python, Linux, C# or Java; which might have been acquired as part of your degree course or through a placement year in industry. At the center of our client's culture is freedom and openness More ❯

New Java role - Fully remote (UK) - Trading/Crypto We have a new Java role for a proprietary trading firm aiming to become part of one of the world’s leading Institutional Market-Makers across Cryptocurrency Exchanges. The founding team have a background in financial markets and sports data. They are seeking roughly 2+ years experience with Java and any … to build the trading volume. From there you will have the opportunity to push the company forward, having input in the ongoing development. Key Responsibilities Develop backend services using Java Deploy code to production daily Ensure quality of codebase is maintained and improved and follow best development practices Write it, own it - You will be responsible for maintaining the software … you write Qualifications, Skills & Experience Degree in STEM subject or equivalent software development experience 2+ years Java programming experience Experience with message passing technologies, in particular Aeron, SBE. Familiar with event driven design patterns and micro service architecture You’ve worked on large scale, distributed systems that operate with large volumes of data. An advocate of engineering best practice, you More ❯

Java Developer – Derivatives A leading financial trade association is seeking a Java Developer to support industry adoption of a global data and digital standards framework used across derivatives markets. Key Responsibilities Contribute to the development and implementation of open-source data models for derivatives trade processing and regulatory reporting. Write clean, efficient Java and Python code and work within GitHub … firms and vendors to capture requirements, extend models, and test new functionality. Document code, manage sprints, and contribute to roadmap planning. Requirements Strong software-engineering background with hands-on Java/Python development experience. Knowledge of derivatives trade lifecycle , collateral management, and/or regulatory reporting. Skilled in data modelling and working with XML/JSON formats. Experience collaborating with More ❯

Java Developer – Derivatives A leading financial trade association is seeking a Java Developer to support industry adoption of a global data and digital standards framework used across derivatives markets. Key Responsibilities Contribute to the development and implementation of open-source data models for derivatives trade processing and regulatory reporting. Write clean, efficient Java and Python code and work within GitHub … firms and vendors to capture requirements, extend models, and test new functionality. Document code, manage sprints, and contribute to roadmap planning. Requirements Strong software-engineering background with hands-on Java/Python development experience. Knowledge of derivatives trade lifecycle , collateral management, and/or regulatory reporting. Skilled in data modelling and working with XML/JSON formats. Experience collaborating with More ❯

Lead Developer - Live Services Java Patching Rate: £508 per day Start Date: 24th November (TBC) Location: Remote/On-site as required Telford Security Clearance: Active SC preferred due to timescale of the project We are seeking an experienced Lead Java Developer to oversee and deliver a critical Live Services Java Patching Programme within Central Government. This role involves upgrading … legacy Java applications to meet contractual and compliance requirements, ensuring continued stability, performance, and security across live environments. The successful candidate will take a leading role in planning, coordinating, and executing the patching exercise, working closely with a small development team and key stakeholders to deliver high-quality outcomes. Key Responsibilities: Lead the end-to-end Java patching and upgrade … and service owners. Provide technical leadership, mentoring, and quality assurance within the team. Maintain comprehensive documentation and reporting throughout the upgrade lifecycle. Essential Skills and Experience: Proven expertise in Java development, including upgrading and maintaining legacy systems. Strong understanding of live service environments and production change management. Demonstrated experience leading or coordinating small technical teams. Excellent communication, analytical, and stakeholder More ❯

Fidessa Developer - Java/Spring - sought by investment bank based in London - Contract - Hybrid *inside IR35* Key Responsibilities Develop and customise the Fidessa cash equities order management systems for US and Canadian markets. Translate business requirements into technical solutions using Fidessa and Java. Collaborate with global teams to deliver high-quality solutions. Provide mentorship to new team members and contribute … line technical issues as needed. Essential Skills & Experience 5+ years of hands-on development experience with the Fidessa trading platform . Strong understanding of equities trading . Proficiency in Java (including Spring framework) and Python . Excellent interpersonal, communication, and organisational skills. Desirable Skills Knowledge of other asset classes in Capital Markets. Experience with tools such as GitHub, Maven, Jenkins More ❯

Fidessa Developer - Java/Spring - sought by investment bank based in London - Contract - Hybrid *inside IR35* Key Responsibilities Develop and customise the Fidessa cash equities order management systems for US and Canadian markets. Translate business requirements into technical solutions using Fidessa and Java. Collaborate with global teams to deliver high-quality solutions. Provide mentorship to new team members and contribute … line technical issues as needed. Essential Skills & Experience 5+ years of hands-on development experience with the Fidessa trading platform . Strong understanding of equities trading . Proficiency in Java (including Spring framework) and Python . Excellent interpersonal, communication, and organisational skills. Desirable Skills Knowledge of other asset classes in Capital Markets. Experience with tools such as GitHub, Maven, Jenkins More ❯

Senior Java Developer | Low Latency | London Our client is a specialist engineering consultancy known for solving some of the most demanding performance challenges across financial markets and technology. Their teams design, build, and optimise high-throughput, low-latency systems used by global institutions where reliability and speed are critical. They are now looking for exceptional Java Engineers with proven experience … Location : Primarily Remote, with travel to London City at least twice per week. 💷Package : Highly competitive base + benefits What You’ll Do Design, build, and maintain high-performance Java applications used in demanding real-time systems. Develop and enhance testing and benchmarking frameworks to validate system performance. Identify and eliminate bottlenecks through systematic performance analysis . Contribute ideas and … . A strong and proven track record developing low-latency, high-throughput systems on JVM. Understanding of JVM internals (GC, threading, concurrency, locking). Commercial experience with high-performance Java systems . Ability to communicate effectively with both technical and non-technical stakeholders. Ability to work confidently across existing and greenfield projects. Maintaining a high level of professionalism and precision. More ❯

Senior Java Developer Low Latency London Our client is a specialist engineering consultancy known for solving some of the most demanding performance challenges across financial markets and technology. Their teams design, build, and optimise high-throughput, low-latency systems used by global institutions where reliability and speed are critical. They are now looking for exceptional Java Engineers with proven experience … Location : Primarily Remote, with travel to London City at least twice per week. Package : Highly competitive base + benefits What You'll Do Design, build, and maintain high-performance Java applications used in demanding real-time systems. Develop and enhance testing and benchmarking frameworks to validate system performance. Identify and eliminate bottlenecks through systematic performance analysis . Contribute ideas and … . A strong and proven track record developing low-latency, high-throughput systems on JVM. Understanding of JVM internals (GC, threading, concurrency, locking). Commercial experience with high-performance Java systems . Ability to communicate effectively with both technical and non-technical stakeholders. Ability to work confidently across existing and greenfield projects. Maintaining a high level of professionalism and precision. More ❯

visits. £60,000 - £80,000 My client is a consultancy who undertake a lot of data and cloud projects for the government. We're looking to hire full stack Java engineers, who have some consultancy experience. Java ReactJS or Angular AWS deployment (must have More ❯

skills before applying if required. My client is a consultancy who undertake a lot of data and cloud projects for the government. We're looking to hire full stack Java engineers, who have some consultancy experience. Java ReactJS or Angular AWS deployment (must have More ❯

IBM Integration Bus v9+/ACE 12, IBM MQ v8+, and MQFTE v7+. Strong knowledge of XML, MRM, TDS, and message flow development using Compute, SOAP, HTTP, Routing, Mapping, Java Compute, File, and Database Nodes. Programming experience with Korn Shell, PERL, Java, Ant, SQL, ESQL. Experience with UNIX (AIX), Linux, and Windows operating systems. Database experience with Oracle 10G/ More ❯

Senior Full Stack Java Developer Location: Warrington (Hybrid - 1 day per week onsite) Salary: £65,000 - £75,000 + benefits Employment Type: Permanent Opportunity Overview A fast-growing, technology-led organisation is seeking a Senior Full Stack Java Developer to join its collaborative engineering team. This role is ideal for someone who combines strong technical ability with maturity and ownership … for a developer who's ready to step up, take initiative, and potentially grow into a future Principal Developer role. Key Responsibilities Develop and maintain full-stack applications using Java, React, and TypeScript Build scalable, cloud-native solutions leveraging AWS Take ownership of features and components from design to deployment Act as a key technical point of contact for design … Collaborate with cross-functional teams to solve technical and business challenges Contribute ideas, participate in code reviews, and support continuous improvement Essential Skills and Experience Extensive commercial experience with Java and Spring Framework Strong frontend development skills using React and TypeScript Familiarity with AWS and building cloud-native applications Understanding of RESTful APIs, Git, and clean code practices A self More ❯

Senior Backend Developer | Java, Spring Boot, RESTful APIs Manchester | Hybrid Up to £85,000 A leading global technology-driven services company in the financial/hospitality sector is seeking a Senior Backend Developer to help architect, build, and optimize backend systems for their international platform. In this role, you will lead the design, development, and deployment of backend services and … standards, and collaborate closely with cross-functional teams during technical design and product planning. The ideal candidate will have extensive experience in backend development with a strong focus on Java and Spring Boot . You should be skilled in designing RESTful APIs, developing efficient database schemas, and implementing best practices in security and cloud-based environments. Experience with AWS is … position suits a senior engineer who enjoys being hands-on while also guiding and supporting junior team members and collaborating with a wide range of technical teams. Essential Skills Java Spring Boot RESTful APIs SQL and NoSQL databases Desirable Skills CI/CD pipelines AWS Python If you’re looking for a role where you can make a real technical More ❯

experience in Software Engineering, Computer Science, or related technical discipline with proven experience maintaining and delivering production software coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, Go, Ruby, Rust, or Python. OR Associate's Degree in Computer Science, Electrical Engineering, Electronics Engineering, Math, Physics, Computer Engineering, or related field AND 5+ years experience in Software … Engineering, Computer Science, or related technical discipline with proven experience maintaining and delivering production software coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, Go, Ruby, Rust, or Python. OR Bachelor's Degree in Computer Science, Electrical Engineering, Electronics Engineering, Math, Physics, Computer Engineering, or related field AND 4+ years experience in Software Engineering, Computer Science … or related technical discipline with proven experience maintaining and delivering production software coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, Go, Ruby, Rust, or Python. OR Master's Degree in Computer Science, Electrical Engineering, Electronics Engineering, Math, Physics, Computer Engineering, or related field AND 2+ years experience in Software Engineering, Computer Science, or related technical More ❯

business developing innovative and highly sensitive products for a range of external clients. This opportunity would best match candidates with 5 years+ software engineering backgrounds with a preference for Java or Python but any experience with Vue or React is also beneficial. The role requires current Security Clearance, so candidates applying must currently hold DV or advanced SC Clearance. Summary … want to work on innovative and interesting products Scope to progress as part of a social and inclusive team. Requires 5 years+ commercial experience with some of the following: Java, Python, VueJS or ReactJS Cloud deployment or automation experience with Ansible, Kubernetes, or similar (AWS preferred) Follow Agile processes and software engineering best practices, TDD, SOLID, Unit testing, etc Full More ❯

Sanderson Government and Defence are supporting a commercial supplier to government in their search for a Cloud Java Developer to work out of either Manchester or Cheltenham. This client, aside from offering a very strong package, offer an excellent development programme, with a real willingness to support both financially and otherwise. Tech wise, we have requirement for both Java and … environment. Attention to detail with a pragmatic and enthusiastic attitude to work. Desirable Skills and Technologies: Experience and knowledge of AWS/Azure and Azure Virtual Desktop. Python or Java, React, Go Familiarity with deploying applications to cloud architecture and technologies in AWS environments. Experience with web application services Experience of Test Driven or Behaviour Driven development. API development and More ❯

offer challenging, meaningful work where your code genuinely makes a difference. What you'll be doing: Designing, developing, and deploying high-assurance software solutions within secure environments. Working across Java, Python, JavaScript, or TypeScript-based systems depending on project needs. Delivering in agile teams alongside cyber, data, and infrastructure specialists. Building scalable cloud-native applications and services in AWS . … Contributing to continuous improvement and innovation across the engineering function. Experience required: Proven commercial software development experience in Java , Python , JavaScript , or TypeScript . Familiarity with AWS cloud services and best practices. Understanding of secure software engineering principles and CI/CD pipelines. Strong communication skills and ability to collaborate in multidisciplinary teams. Must be eligible for UK DV clearance More ❯

Title: Lead Java Developer Client: Fintech Salary: Up to £135,000 + Bonus + Benefits Location: London My client is an innovative and award-winning Fintech based in London at the forefront of the eTrading space. They are after someone with a genuine passion for Java, agile development and Opensource tech to join an already highly skilled development team. You … a firm as a founding engineer at the beginning of their growth journey! The successful applicant will have the following skills and experience: Essential Skills Hands on development using Java Detail orientated developer with a passion for testing and high code quality Degree in Computer Science, Software Engineering or STEM subject A good personality – team player with excellent communication skills More ❯

scalable, and maintainable code Contributing to architectural decisions that directly impact performance and reliability What we’re looking for Solid experience in software engineering with strong experience in Python, Java, or C# Proven track record of performance tuning in large-scale, distributed systems Expertise in profiling tools, memory management, and debugging complex performance issues Strong database optimisation skills (Postgres, SQL … opportunity to shape system architecture and mentor future engineering leaders Flexible Hybrid working in Central London up to £85,000 basic plus market leading bonus structures Tech Stack: Python, Java, C#, Postgres, Kubernetes, Docker, AWS, Azure, k6, JMeter, Gatling If you’re passionate about pushing the boundaries of performance engineering and building software that scales effortlessly, we’d love to More ❯

code Contributing to architectural decisions that directly impact performance and reliability What we’re looking for A few years commercial experience in software engineering with strong experience in Python, Java, or C# Proven track record of performance tuning in large-scale, distributed systems Expertise in profiling tools, memory management, and debugging complex performance issues Strong database optimisation skills (Postgres, SQL … opportunity to shape system architecture and mentor future engineering leaders Flexible Hybrid working in Central London up to £85,000 basic plus market leading bonus structures Tech Stack: Python, Java, C#, Postgres, Kubernetes, Docker, AWS, Azure, k6, JMeter, Gatling If you’re passionate about pushing the boundaries of performance engineering and building software that scales effortlessly, we’d love to More ❯

code Contributing to architectural decisions that directly impact performance and reliability What we're looking for A few years commercial experience in software engineering with strong experience in Python, Java, or C# Proven track record of performance tuning in large-scale, distributed systems Expertise in profiling tools, memory management, and debugging complex performance issues Strong database optimisation skills (Postgres, SQL … opportunity to shape system architecture and mentor future engineering leaders Flexible Hybrid working in Central London up to £85,000 basic plus market leading bonus structures Tech Stack: Python, Java, C#, Postgres, Kubernetes, Docker, AWS, Azure, k6, JMeter, Gatling If you're passionate about pushing the boundaries of performance engineering and building software that scales effortlessly, we'd love to More ❯

scalable, and maintainable code Contributing to architectural decisions that directly impact performance and reliability What we're looking for Solid experience in software engineering with strong experience in Python, Java, or C# Proven track record of performance tuning in large-scale, distributed systems Expertise in profiling tools, memory management, and debugging complex performance issues Strong database optimisation skills (Postgres, SQL … opportunity to shape system architecture and mentor future engineering leaders Flexible Hybrid working in Central London up to £85,000 basic plus market leading bonus structures Tech Stack: Python, Java, C#, Postgres, Kubernetes, Docker, AWS, Azure, k6, JMeter, Gatling If you're passionate about pushing the boundaries of performance engineering and building software that scales effortlessly, we'd love to More ❯

approaches. Hands-on experience with AI/ML pipelines and vector databases (e.g. Pinecone, FAISS, Weaviate). Proficiency in Python plus at least one other backend language (TypeScript or Java preferred). Proven experience with AWS , containerisation, and infrastructure as code (Terraform, Docker). Solid understanding of API design, data modelling, and microservice architecture. Excellent communication skills, with the ability … to translate technical outcomes into business impact. Tech Environment Languages: Python, TypeScript, Java AI/LLM: OpenAI, Anthropic, Retrieval-Augmented Generation (RAG) Infrastructure: AWS (Lambda, ECS, S3), Terraform, Docker Databases: PostgreSQL, MySQL, Redis, vector databases DevOps: GitHub, CI/CD pipelines Why Join Competitive salary and comprehensive benefits package 25 days annual leave + bank holidays Paid sick leave and More ❯