1 to 25 of 2,174 Permanent Java Jobs in London

Role: Java Software Engineer/Java Developer 🌍 Location: Central London (EC2M) - hybrid 2 days a week onsite 💰 Salary: £40,000-£80,000 🛠 Key Skills: Core Java/SE, XML, JSON, Junit, APIs, complex/high-traffic systems A leading global B2B SaaS technology company is seeking Java Developers at all … volume XML integrations, time-sensitive bug fixes, and contributing to innovative new features and products. Key Responsibilities: Develop and maintain robust backend systems in Java (Java 17). Work on complex system integrations with third-party suppliers and distributors. Handle XML feeds, web scraping, and high-frequency search processing. Deliver … Collaborate on product design and contribute to new functionality. Work both independently and in agile teams with shifting priorities. Required Skills and Experience: Strong Java SDK/J2SE programming knowledge. Solid grasp of algorithms, data structures, and object-oriented design patterns. Proactive attitude and ability to take ownership of projects. More ❯

Role: Java Software Engineer/Java Developer 🌍 Location: Central London (EC2M) - hybrid 2 days a week onsite 💰 Salary: £40,000-£80,000 🛠 Key Skills: Core Java/SE, XML, JSON, Junit, APIs, complex/high-traffic systems A leading global B2B SaaS technology company is seeking Java Developers at all … volume XML integrations, time-sensitive bug fixes, and contributing to innovative new features and products. Key Responsibilities: Develop and maintain robust backend systems in Java (Java 17). Work on complex system integrations with third-party suppliers and distributors. Handle XML feeds, web scraping, and high-frequency search processing. Deliver … Collaborate on product design and contribute to new functionality. Work both independently and in agile teams with shifting priorities. Required Skills and Experience: Strong Java SDK/J2SE programming knowledge. Solid grasp of algorithms, data structures, and object-oriented design patterns. Proactive attitude and ability to take ownership of projects. More ❯

Role: Java Software Engineer/Java Developer 🌍 Location: Central London (EC2M) - hybrid 2 days a week onsite 💰 Salary: £40,000-£80,000 🛠 Key Skills: Core Java/SE, XML, JSON, Junit, APIs, complex/high-traffic systems A leading global B2B SaaS technology company is seeking Java Developers at all … volume XML integrations, time-sensitive bug fixes, and contributing to innovative new features and products. Key Responsibilities: Develop and maintain robust backend systems in Java (Java 17). Work on complex system integrations with third-party suppliers and distributors. Handle XML feeds, web scraping, and high-frequency search processing. Deliver … Collaborate on product design and contribute to new functionality. Work both independently and in agile teams with shifting priorities. Required Skills and Experience: Strong Java SDK/J2SE programming knowledge. Solid grasp of algorithms, data structures, and object-oriented design patterns. Proactive attitude and ability to take ownership of projects. More ❯

Role: Java Software Engineer/Java Developer Location: Central London (EC2M) - hybrid 2 days a week onsite Salary: £40,000-£80,000 Key Skills: Core Java/SE, XML, JSON, Junit, APIs, complex/high-traffic systems A leading global B2B SaaS technology company is seeking Java Developers at all … volume XML integrations, time-sensitive bug fixes, and contributing to innovative new features and products. Key Responsibilities: Develop and maintain robust backend systems in Java (Java 17). Work on complex system integrations with third-party suppliers and distributors. Handle XML feeds, web scraping, and high-frequency search processing. Deliver … Collaborate on product design and contribute to new functionality. Work both independently and in agile teams with shifting priorities. Required Skills and Experience: Strong Java SDK/J2SE programming knowledge. Solid grasp of algorithms, data structures, and object-oriented design patterns. Proactive attitude and ability to take ownership of projects. More ❯

About the Role: We are seeking an experienced and visionary Technical Lead with deep expertise in Java Springboot, microservices architecture, and solution design to lead the backend engineering efforts of our enterprise platforms. You’ll work closely with engineering managers, architects, mobile teams, and product stakeholders to deliver scalable, secure … and maintainable solutions. Job Description: Java Lead engineer will play a critical role in the design, development, and implementation of mission - critical applications and systems. They leverage their extensive technical expertise and leadership skills to lead complex projects, mentor junior team members and drive innovation across the organization. They are … someone who has clear basic fundamentals. CI/CD - Docker or Kubernetes concepts. Reactive Programming experience. Common Logging experience. Top Skills/Must Have: Java Development (Java 21/Java 17/Java 8). Micro-services Architecture - Spring/Springboot. Cloud - Azure is good to have but any other More ❯

About the Role: We are seeking an experienced and visionary Technical Lead with deep expertise in Java Springboot, microservices architecture, and solution design to lead the backend engineering efforts of our enterprise platforms. You’ll work closely with engineering managers, architects, mobile teams, and product stakeholders to deliver scalable, secure … and maintainable solutions. Job Description: Java Lead engineer will play a critical role in the design, development, and implementation of mission - critical applications and systems. They leverage their extensive technical expertise and leadership skills to lead complex projects, mentor junior team members and drive innovation across the organization. They are … someone who has clear basic fundamentals. CI/CD - Docker or Kubernetes concepts. Reactive Programming experience. Common Logging experience. Top Skills/Must Have: Java Development (Java 21/Java 17/Java 8). Micro-services Architecture - Spring/Springboot. Cloud - Azure is good to have but any other More ❯

About the Role: We are seeking an experienced and visionary Technical Lead with deep expertise in Java Springboot, microservices architecture, and solution design to lead the backend engineering efforts of our enterprise platforms. You’ll work closely with engineering managers, architects, mobile teams, and product stakeholders to deliver scalable, secure … and maintainable solutions. Job Description: Java Lead engineer will play a critical role in the design, development, and implementation of mission - critical applications and systems. They leverage their extensive technical expertise and leadership skills to lead complex projects, mentor junior team members and drive innovation across the organization. They are … someone who has clear basic fundamentals. CI/CD - Docker or Kubernetes concepts. Reactive Programming experience. Common Logging experience. Top Skills/Must Have: Java Development (Java 21/Java 17/Java 8). Micro-services Architecture - Spring/Springboot. Cloud - Azure is good to have but any other More ❯

About the Role: We are seeking an experienced and visionary Technical Lead with deep expertise in Java Springboot, microservices architecture, and solution design to lead the backend engineering efforts of our enterprise platforms. You’ll work closely with engineering managers, architects, mobile teams, and product stakeholders to deliver scalable, secure … and maintainable solutions. Job Description: Java Lead engineer will play a critical role in the design, development, and implementation of mission - critical applications and systems. They leverage their extensive technical expertise and leadership skills to lead complex projects, mentor junior team members and drive innovation across the organization. They are … someone who has clear basic fundamentals. CI/CD - Docker or Kubernetes concepts. Reactive Programming experience. Common Logging experience. Top Skills/Must Have: Java Development (Java 21/Java 17/Java 8). Micro-services Architecture - Spring/Springboot. Cloud - Azure is good to have but any other More ❯

About the Role: We are seeking an experienced and visionary Technical Lead with deep expertise in Java Springboot, microservices architecture, and solution design to lead the backend engineering efforts of our enterprise platforms. You’ll work closely with engineering managers, architects, mobile teams, and product stakeholders to deliver scalable, secure … and maintainable solutions. Job Description: Java Lead engineer will play a critical role in the design, development, and implementation of mission - critical applications and systems. They leverage their extensive technical expertise and leadership skills to lead complex projects, mentor junior team members and drive innovation across the organization. They are … someone who has clear basic fundamentals. CI/CD - Docker or Kubernetes concepts. Reactive Programming experience. Common Logging experience. Top Skills/Must Have: Java Development (Java 21/Java 17/Java 8). Micro-services Architecture - Spring/Springboot. Cloud - Azure is good to have but any other More ❯

About the Role: We are seeking an experienced and visionary Technical Lead with deep expertise in Java Springboot, microservices architecture, and solution design to lead the backend engineering efforts of our enterprise platforms. You’ll work closely with engineering managers, architects, mobile teams, and product stakeholders to deliver scalable, secure … and maintainable solutions. Job Description: Java Lead engineer will play a critical role in the design, development, and implementation of mission - critical applications and systems. They leverage their extensive technical expertise and leadership skills to lead complex projects, mentor junior team members and drive innovation across the organization. They are … someone who has clear basic fundamentals. CI/CD - Docker or Kubernetes concepts. Reactive Programming experience. Common Logging experience. Top Skills/Must Have: Java Development (Java 21/Java 17/Java 8). Micro-services Architecture - Spring/Springboot. Cloud - Azure is good to have but any other More ❯

Senior Java Software Engineer - Java 11+, Spring, Spring Boot, Microservices, Kafka, Akka, Docker/Kubernetes, Real-time, TDD/BDD, Payments - London A Senior Java Engineer with a background in finance/payments and experience working on distributed real-time systems is sought after by a global Fintech. This organisation … you will join the core engineering team working on the development of their real-time payments processing platform, using a primary tech stack of Java 17, Spring Boot and Akka. You will contribute from both a design and coding perspective, taking ownership of delivering new components and features ensuring high … Pair Programming and TDD, so are looking for people from similar environments. To be successful, you will demonstrate: A strong background in hands-on Java engineering, currently working with Java 11+ Indepth knowledge of microservices architecture and usage of Spring/Spring Boot Experience developing distributed, real-time applications (with More ❯

systems (e.g., Git). Highly Desirable: Experience with Python for data analysis, scripting, and integration with KDB+. Familiarity with other programming languages (e.g., C++, Java). Experience with cloud platforms (e.g., Azure, AWS, GCP) for KDB+ deployments or related data solutions. Knowledge of automation tools and CI/CD pipelines. More ❯

pride in your work. Strong problem-solving skills, viewing technology as a means to solve challenges. Proficiency in a programming language (e.g., Scala, Python, Java, C#) with understanding of domain modelling and application development. Knowledge of data management platforms (SQL, NoSQL, Spark/Databricks). Experience with modern engineering tools More ❯

Looking For: Bachelor's/Master's Degree in Computer Science, Information Technology, or equivalent. Proficiency in at least one mainstream programming language (Python, Java, Scala, Clojure, etc.). In-depth understanding of data structures and algorithmic designs. Knowledge of computer networking concepts (TCP/IP, HTTPS, DNS, etc.). More ❯

About The Role Hippo is recruiting Senior Java Developers to join our Hippo Herd. Senior Java Developers work in multi-disciplinary teams that build, support & maintain User-Centred digital solutions that offer real value and work for everyone. Hippo's Senior Java Developers are experts in their field. You will … both technical/non-technical terms depending on audience The full development lifecycle delivering user-centred digital solutions A full stack developer using core Java, CXF, Spring Boot, Jetty, Mustache, HTML, CSS & JavaScript JavaScript library and framework experience is preferable - Node, React, Angular Containerisation experience - Docker or Kubernetes or similar More ❯

Role: Full-stack Java Developer (VueJS) Location: London city, On-site, Salary: £55-70K Are you a Mid-Level Java Developer who wants to work with a rapidly scaling Tech business who are solving problems using the latest tools in Machine Learning, Data Science and Automation tools? A mid … level Java Developer is required to join an innovative and rapidly growing scale-up dedicated to optimizing performance for their clients using cutting-edge automation tools, Data Science and machine learning technologies. Their mission is to revolutionize how businesses operate by delivering high-performance solutions that drive efficiency and effectiveness. … company special is a unique culture and how they collaborate to solve problems. Job Description: We are seeking a talented and experienced Full-stack Java Developer to join our team. As a Full-stack Java Developer, you will play a crucial role in designing, developing, and maintaining high-performance applications More ❯

emerging trends, technologies and software solutions . The ideal Technical Lead would have development vetting on application, with experience with OOP languages like C#, Java, C++ and are local to either Manchester, Gloucester, London and Southampton, and happy to travel to local TOP SECRET sites as/when needed. The … either London, Southampton, Gloucester or Manchester. Happy to travel to site as/when needed, min 3 day's a week on site. Keywords: Java Developer, Java Engineer, Java Consultant, Software Engineer, Java Development, DV, Defence, MoD, C++, C#, Java, Reference: BBBH17999 If you're interested in this role, click More ❯

engineering tools (AWS, Azure, or OCI). Excellent communication skills and a solutions-focused mindset. Desirable experience includes: AWS or Azure certifications. Familiarity with Java and business intelligence tools (e.g., Power BI, Pentaho BA). Experience with streaming technologies like Kafka. If you would like to learn more, please apply More ❯

Experience: Eligibility for SC clearance . Significant experience in Agile environments (e.g., SCRUM, Kanban). Solid technical development background with strong coding skills in Java, C#, TypeScript, JavaScript, or similar. Proven expertise in automation testing, with hands-on experience using tools like Playwright, Selenium, Cypress, or RestAssured. Strong knowledge of More ❯

prototypes for proposed solutions. Key Skills & Competencies: Strong expertise in software engineering principles , design patterns, and best practices. Proficiency in multiple programming languages (e.g., Java, Python, C#, or others) and frameworks. Extensive experience with cloud platforms (e.g., AWS, Azure, Google Cloud) and containerization technologies (e.g., Docker, Kubernetes). Hands-on More ❯

but it's ok if you don't check every box: Hands on Software Engineering background with experience in building large scale applications in Java, using a broad set of tools, techniques, and platforms, with a focus on proving it works and does the right thing. Experience working with Spring More ❯

Proven experience and a passion for developing and operating full stack production systems in Clojure, k8s, and AWS or GCP. ClojureScript, JavaScript, TypeScript, React, Java, Python, and Terraform experience highly desirable. Proven experience leading teams, designing simple/scalable/reliable architectures, building, and operating concurrent, distributed systems, solving difficult More ❯

HTML5 and third-party libraries such as React Js, Angular, jQuery Minimum 5 years of experience working server-side programming languages such as Net, Java, Ruby and Python Minimum 5 years of experience in API development using web services and Service Oriented Architecture (SOA) methodologies. Minimum 5 years of experience More ❯

software development with minimum 2 years in Ops or DevOps experience in trading environments, with expertise in large-scale distributed systems; recent work in Java, Go, or Scala is preferred. Hands-on experience with container orchestration (Kubernetes, Docker, etc.) and cloud infrastructure, especially AWS; familiarity with Infrastructure-as-Code tools More ❯

or managerial role. Strong background in financial services, particularly in market risk, counterparty credit risk, or risk analytics Proficiency in modern programming languages (e.g., Java, Python, Scala) and frameworks. Experience with cloud platforms (AWS, Azure, or GCP). Deep understanding of software development lifecycle (SDLC), agile methodologies, and devOps practices. More ❯