1,126 to 1,150 of 3,311 Java Jobs in the UK

providing industry solutions for Financial Services, Manufacturing, Life Sciences and Healthcare, Technology and Services, Telecom and Media, Retail and CPG, and Public Services. Consolidated revenues as of $13+ billion. Java - must have A Java Developer is a specialized programmer responsible for designing, developing, and maintaining Java-based applications. Their role spans the entire software development lifecycle, from conceptualization to deployment … and maintenance. They collaborate with software engineers, web developers, and other team members to create scalable and efficient solutions. Key Responsibilities Java developers are tasked with various duties, including: Designing, implementing, and maintaining Java-based applications that meet business objectives. Writing clean, efficient, and testable code while adhering to best practices. Analyzing user requirements to define system functionality and application … Ensuring applications are optimized for performance, scalability, and security. Collaborating with cross-functional teams, including project managers, quality assurance analysts, and technical architects. Skills Required To excel as a Java Developer, one must possess a mix of technical and soft skills: Proficiency in Java and its ecosystems, including frameworks like Spring, Hibernate, and Java EE. Strong understanding of Object-Oriented More ❯

providing industry solutions for Financial Services, Manufacturing, Life Sciences and Healthcare, Technology and Services, Telecom and Media, Retail and CPG, and Public Services. Consolidated revenues as of $13+ billion. Java - must have A Java Developer is a specialized programmer responsible for designing, developing, and maintaining Java-based applications. Their role spans the entire software development lifecycle, from conceptualization to deployment … and maintenance. They collaborate with software engineers, web developers, and other team members to create scalable and efficient solutions. Key Responsibilities Java developers are tasked with various duties, including: Designing, implementing, and maintaining Java-based applications that meet business objectives. Writing clean, efficient, and testable code while adhering to best practices. Analyzing user requirements to define system functionality and application … Ensuring applications are optimized for performance, scalability, and security. Collaborating with cross-functional teams, including project managers, quality assurance analysts, and technical architects. Skills Required To excel as a Java Developer, one must possess a mix of technical and soft skills: Proficiency in Java and its ecosystems, including frameworks like Spring, Hibernate, and Java EE. Strong understanding of Object-Oriented More ❯

providing industry solutions for Financial Services, Manufacturing, Life Sciences and Healthcare, Technology and Services, Telecom and Media, Retail and CPG, and Public Services. Consolidated revenues as of $13+ billion. Java - must have A Java Developer is a specialized programmer responsible for designing, developing, and maintaining Java-based applications. Their role spans the entire software development lifecycle, from conceptualization to deployment … and maintenance. They collaborate with software engineers, web developers, and other team members to create scalable and efficient solutions. Key Responsibilities Java developers are tasked with various duties, including: Designing, implementing, and maintaining Java-based applications that meet business objectives. Writing clean, efficient, and testable code while adhering to best practices. Analyzing user requirements to define system functionality and application … Ensuring applications are optimized for performance, scalability, and security. Collaborating with cross-functional teams, including project managers, quality assurance analysts, and technical architects. Skills Required To excel as a Java Developer, one must possess a mix of technical and soft skills: Proficiency in Java and its ecosystems, including frameworks like Spring, Hibernate, and Java EE. Strong understanding of Object-Oriented More ❯

Java Developer –| Fully Remote | Up to £60,000 + 15% Bonus Work Arrangement: Fully Remote Are you a skilled Java Developer ready to take on complex technical challenges in a fast-paced, high-performance environment? Join a leading technology business powering global-scale platforms and systems that handle millions of data transactions daily. What You’ll Do: Develop and maintain … secure, high-availability Java systems supporting regulatory and compliance functions. Work with advanced cryptography including authentication, digital signatures, encryption, and time stamping. Design, build, and maintain solutions processing large-scale data for multiple international markets. Analyse and troubleshoot system performance, stability, and security issues. Collaborate with technical experts across multiple teams to deliver high-quality, compliant solutions. Contribute to continual … improvement initiatives, enhancing performance, reliability, and scalability. What We’re Looking For: Strong commercial experience with Java and DevOps environments. Experience working with XML or XSD validation and transformations . Excellent analytical and problem-solving skills. Ability to thrive in a dynamic and evolving environment. Proactive mindset with a collaborative and positive attitude. Why You’ll Love It Here: Competitive More ❯

Job Title: Java/LLMs Engineer Location: Edinburgh, UK (4 days on-site per week) Industry: Fintech Employment Type: Full-Time, Permanent Role Overview We are seeking a highly skilled Java/LLM Engineer to join the Data Migration team. The ideal candidate will have a strong background in Core Java development and SQL , combined with practical experience or interest … solutions . You will be responsible for developing, integrating, and maintaining components that support large data migration pipelines and AI-driven automation. Key Responsibilities Design, develop, and maintain scalable Java applications supporting the data migration framework. Integrate LLM-based modules to enhance automation and data transformation processes. Collaborate with cross-functional teams (Data Engineers, AI specialists, Business Analysts) to ensure … SQL queries for data extraction, transformation, and validation. Participate in code reviews, performance tuning, and technical documentation. Support testing, deployment, and monitoring in production environments. Requirements Proven experience in Java and Core Java development. Strong knowledge of SQL and relational database concepts. Experience or strong interest in LLM technologies and their application in enterprise systems. Solid understanding of software design More ❯

Job Title: Java/LLMs Engineer Location: Edinburgh, UK (4 days on-site per week) Industry: Fintech Employment Type: Full-Time, Permanent Role Overview We are seeking a highly skilled Java/LLM Engineer to join the Data Migration team. The ideal candidate will have a strong background in Core Java development and SQL , combined with practical experience or interest … solutions . You will be responsible for developing, integrating, and maintaining components that support large data migration pipelines and AI-driven automation. Key Responsibilities Design, develop, and maintain scalable Java applications supporting the data migration framework. Integrate LLM-based modules to enhance automation and data transformation processes. Collaborate with cross-functional teams (Data Engineers, AI specialists, Business Analysts) to ensure … SQL queries for data extraction, transformation, and validation. Participate in code reviews, performance tuning, and technical documentation. Support testing, deployment, and monitoring in production environments. Requirements Proven experience in Java and Core Java development. Strong knowledge of SQL and relational database concepts. Experience or strong interest in LLM technologies and their application in enterprise systems. Solid understanding of software design More ❯

Job Title: Java/LLMs Engineer Location: Edinburgh, UK (4 days on-site per week) Industry: Fintech Employment Type: Full-Time, Permanent Role Overview We are seeking a highly skilled Java/LLM Engineer to join the Data Migration team. The ideal candidate will have a strong background in Core Java development and SQL , combined with practical experience or interest … solutions . You will be responsible for developing, integrating, and maintaining components that support large data migration pipelines and AI-driven automation. Key Responsibilities Design, develop, and maintain scalable Java applications supporting the data migration framework. Integrate LLM-based modules to enhance automation and data transformation processes. Collaborate with cross-functional teams (Data Engineers, AI specialists, Business Analysts) to ensure … SQL queries for data extraction, transformation, and validation. Participate in code reviews, performance tuning, and technical documentation. Support testing, deployment, and monitoring in production environments. Requirements Proven experience in Java and Core Java development. Strong knowledge of SQL and relational database concepts. Experience or strong interest in LLM technologies and their application in enterprise systems. Solid understanding of software design More ❯

Job Title: Java/LLMs Engineer Location: Edinburgh, UK (4 days on-site per week) Industry: Fintech Employment Type: Full-Time, Permanent Role Overview We are seeking a highly skilled Java/LLM Engineer to join the Data Migration team. The ideal candidate will have a strong background in Core Java development and SQL , combined with practical experience or interest … solutions . You will be responsible for developing, integrating, and maintaining components that support large data migration pipelines and AI-driven automation. Key Responsibilities Design, develop, and maintain scalable Java applications supporting the data migration framework. Integrate LLM-based modules to enhance automation and data transformation processes. Collaborate with cross-functional teams (Data Engineers, AI specialists, Business Analysts) to ensure … SQL queries for data extraction, transformation, and validation. Participate in code reviews, performance tuning, and technical documentation. Support testing, deployment, and monitoring in production environments. Requirements Proven experience in Java and Core Java development. Strong knowledge of SQL and relational database concepts. Experience or strong interest in LLM technologies and their application in enterprise systems. Solid understanding of software design More ❯

Job Title: Java/LLMs Engineer Location: Edinburgh, UK (4 days on-site per week) Industry: Fintech Employment Type: Full-Time, Permanent Role Overview We are seeking a highly skilled Java/LLM Engineer to join the Data Migration team. The ideal candidate will have a strong background in Core Java development and SQL , combined with practical experience or interest … solutions . You will be responsible for developing, integrating, and maintaining components that support large data migration pipelines and AI-driven automation. Key Responsibilities Design, develop, and maintain scalable Java applications supporting the data migration framework. Integrate LLM-based modules to enhance automation and data transformation processes. Collaborate with cross-functional teams (Data Engineers, AI specialists, Business Analysts) to ensure … SQL queries for data extraction, transformation, and validation. Participate in code reviews, performance tuning, and technical documentation. Support testing, deployment, and monitoring in production environments. Requirements Proven experience in Java and Core Java development. Strong knowledge of SQL and relational database concepts. Experience or strong interest in LLM technologies and their application in enterprise systems. Solid understanding of software design 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 ❯

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 ❯

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 ❯

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 ❯

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 ❯

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 ❯

Leeds, UK (3 days travel to office) Job Type: Full-Time Relevant Experience: 11 Years Job Summary: Supports development and operation of software through secure tools and environments. Competent Java developer with significant experience in AWS cloud services. Proficient in AngularJS, Jenkins, Karate, Gherkin and Cypress. Certification: Expected to have AWS Associate Developer accreditation or above Responsibilities: Manage tools and … development standards. Integrate systems and services. Support service operations and maintenance. Requirements: Experience with AWS cloud services (ECR, ECS, Lambda, API Gateway, S3, DynamoDB, Step Functions, Apigee) Proficiency in Java (Springboot), AngularJS, Jenkins, Node 10, Groovy, Bash, Typescript. Tooling: Gitlab, Jenkins, CloudFormation, Maven, Docker, Fortify on Demand, SonarQube Knowledge of Karate, Gherkin, Cypress, Jest Understanding of DevOps practices. Ability to 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 ❯

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 ❯

Leeds, UK (3 days travel to office) Job Type: Full-Time Relevant Experience: 11 Years Job Summary: Supports development and operation of software through secure tools and environments. Competent Java developer with significant experience in AWS cloud services. Proficient in AngularJS, Jenkins, Karate, Gherkin and Cypress. Certification: Expected to have AWS Associate Developer accreditation or above Responsibilities: Manage tools and … development standards. Integrate systems and services. Support service operations and maintenance. Requirements: Experience with AWS cloud services (ECR, ECS, Lambda, API Gateway, S3, DynamoDB, Step Functions, Apigee) Proficiency in Java (Springboot), AngularJS, Jenkins, Node 10, Groovy, Bash, Typescript. Tooling: Gitlab, Jenkins, CloudFormation, Maven, Docker, Fortify on Demand, SonarQube Knowledge of Karate, Gherkin, Cypress, Jest Understanding of DevOps practices. Ability to More ❯

Java Developer – High-Performance Trading Systems - Fully Remote - up to £100k base About the Company We’re a fast-growing proprietary trading firm operating across multiple global cryptocurrency exchanges. Founded by a team with deep experience in financial markets and algorithmic trading, we’ve already achieved top-tier market-maker status, handling trading volumes exceeding $100M per month — all within … our first six months of operation. About the Role We’re looking for a talented Java Developer to join our small, high-performing engineering team. You’ll play a key role in expanding our trading infrastructure, integrating new exchanges, and building scalable, low-latency systems that power our trading strategies. This is an opportunity to work on cutting-edge systems … in a start-up environment where your work has a direct and measurable impact. Key Responsibilities Develop and maintain high-performance backend services in Java Deploy code to production frequently in a fast-paced, agile environment Build scalable, event-driven systems handling large volumes of real-time data Take ownership of your code — from design through deployment and ongoing support More ❯

Java Developer 60,000 to 70,000 Burgess Hill - Hybrid Working A well established top tier consultancy firm is looking for experienced Java developers to join their current development team. You will be a key part of our agile development team, building and deploying cutting-edge microservices-based applications. This is a hands-on role where you will be involved … in the full development lifecycle, from design to deployment. What you'll be doing: Designing, developing, and deploying robust and scalable microservice applications using Java 8+. Developing and maintaining BDD test cases using Cucumber to ensure high-quality software. Working with Vert.X (or similar reactive frameworks) for high-performance application development. The Successful candidate will have the following experience Extensive … experience with Java 8+ Proficiency in reactive programming frameworks like Vert.X. or similar frameworks Proficient experience in Spring/spring boot Solid knowledge of relational database - SQL Experience with Behavior-Driven Development (BDD) Extensive experience with Cucumber. 60,000 to 70,000 Burgess Hill - Hybrid Working 3 days in the office 3 days working from home If you thrive on More ❯

Java Developer £60,000 to £70,000 Burgess Hill - Hybrid Working A well established top tier consultancy firm is looking for experienced Java developers to join their current development team. You will be a key part of our agile development team, building and deploying cutting-edge microservices-based applications. This is a hands-on role where you will be involved … in the full development lifecycle, from design to deployment. What you'll be doing: Designing, developing, and deploying robust and scalable microservice applications using Java 8+. Developing and maintaining BDD test cases using Cucumber to ensure high-quality software. Working with Vert.X (or similar reactive frameworks) for high-performance application development. The Successful candidate will have the following experience Extensive … experience with Java 8+ Proficiency in reactive programming frameworks like Vert.X. or similar frameworks Proficient experience in Spring/spring boot Solid knowledge of relational database - SQL Experience with Behavior-Driven Development (BDD) Extensive experience with Cucumber. £60,000 to £70,000 | Burgess Hill - Hybrid Working 3 days in the office 3 days working from home If you thrive on More ❯