1 to 25 of 345 Java Jobs in London

Senior Backend Java Engineer Rate: £500 - £575 a day pay inside Location: Remote, with expectations to attend onsite meetings when required (1-2 a month) Duration: 6 months+ We are looking for a hands-on Senior Backend Java Engineer with recent experience building, testing, and deploying production-grade APIs … whose recent experience is mainly support, coordination, architecture-only, or line management. Essential skills and experience Strong hands-on commercial coding experience with modern Java (Java v17 min, v21 LTS or newer preferred) Strong experience with Spring Boot Experience building REST APIs/microservices from scratch Strong testing skills using ...

Java Technical Lead Location: London (Hybrid - 2 days on-site) Salary: Up to £110k + Benefits The Role We're looking for a Java Tech Lead to join a high-performing tech consultancy delivering complex, business-critical systems for enterprise and scale-up clients. You'll take technical ownership … hands-on leadership role combining architecture, engineering excellence, and people leadership in a modern, agile consultancy environment. Responsibilities Lead the design and development of Java-based systems across multiple client projects Set technical direction, standards, and best practices Act as a hands-on technical leader, contributing high-quality code Mentor ...

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-driven company building an artificial intelligence using … 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 of the best ...

SDLC to rapidly comprehend large codebases, generate production‐quality code, and accelerate delivery. Required Qualifications 8+ years of professional software development experience in Java (Java 17+ preferred), with strong command of concurrency, collections, and modern language features. Demonstrated experience with AI‐assisted engineering tools (e.g., Claude Code, GitHub Copilot Agent ...

SDLC to rapidly comprehend large codebases, generate production‐quality code, and accelerate delivery. Required Qualifications 8+ years of professional software development experience in Java (Java 17+ preferred), with strong command of concurrency, collections, and modern language features. Demonstrated experience with AI assisted engineering tools (e.g., Claude Code, GitHub Copilot Agent ...

principal-level roles Expertise in JavaScript/TypeScript and modern frontend frameworks (e.g., React, Angular, or Vue) Strong backend development experience (e.g., Node.js, Java, Python, or Go) Proven experience designing and building scalable, distributed systems Strong experience with REST APIs, microservices architecture, and event-driven systems Cloud experience with Azure ...

principal-level roles Expertise in JavaScript/TypeScript and modern frontend frameworks (e.g., React, Angular, or Vue) Strong backend development experience (e.g., Node.js, Java, Python, or Go) Proven experience designing and building scalable, distributed systems Strong experience with REST APIs, microservices architecture, and event-driven systems Cloud experience with Azure ...

design and build Data Lakehouses using Microsoft technologies (Data Factory, Data Bricks, Data Lake, PowerBI).* Proficiency in software engineering languages such as Python, Java, C#, JavaScript, and TypeScript.* Deep knowledge of data engineering languages and tools such as SQL, Spark, Scala, and Hadoop.* Strong background in agile and DevOps ...

remote basis. This is an exciting opportunity to work on innovative projects within a collaborative environment. Required Skills: Deep hands-on experience with Java and Spring Boot (Web Services, Spring Security, etc.) Strong knowledge of PostgreSQL (Postgres) - including schema design and query optimization Solid understanding of object-oriented programming principles ...

Tech stack required ideally: You can expect to work with the following technologies to ensure scalable, high-performance applications: Programming Languages: JavaScript/TypeScript, Java, C# Frameworks: Vue/Angular/React/Node/Next, Spring/Spring Boot, .NET/ASP.NET Cloud platforms: AWS, GCP, Azure CI/ ...

Professional knowledge and experience Essential Proven experience in full-stack software development, including design, development, testing, and deployment. Significant hands on experience with Java, Spring Boot and Microservices. Strong understanding of Agile and DevOps practices, with a focus on continuous integration and delivery. Some proficiency in one or more programming … languages (e.g., Python, Java, JavaScript) and experience with software architecture patterns. Experience with cloud platforms (e.g., AWS, Azure, GCP) and infrastructure as code. Familiarity with CI/CD pipelines, automated testing, and modern software development practices. Knowledge of technologies such as microservices, containerisation (Docker, Kubernetes), or serverless architecture. Awareness ...

working closely with engineering teams Experience with at least two programming languages used for research (At least one from Python or R, and optionally Java, TypeScript, or C++) at a level and breadth commensurate with seniority Ability to independently interpret the requirements of information users and present detailed, complex reports ...

Java Engineer Salary to £ 45 k + Company Options Scheme Hybrid working between your home, their offices (London Vauxhall) & client sites. NB: Please only apply if you are a UK National and able to achieve SC (ideally DV) clearance i.e. you have at least 5 years residency … anywhere but will most likely be in & around London. Responsibilities Design, develop, and deploy Camunda-based process and decision automation solutions Implement and integrate Java-based microservices, APIs, and connectors within orchestration flows Translate BPMN and DMN models into executable workflows and reusable components Collaborate closely with analysts and service ...

backend engineers. Bachelor's degree in Computer Science, Information Systems, Engineering, or equivalent practical experience. Nice to have: Experience with backend development using Java and Spring-based technologies such as Spring Boot. Experience with cloud platforms such as AWS. Familiarity with containerized environments and CI/CD pipelines. Domain knowledge ...

Java Developer - multiple roles £510/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. You'll work in multidisciplinary … 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. You'll work with technologies including Java, Spring Boot, Postgres, Kafka, Docker, React and AWS. ...

Job Level: 9 UK Wide We are looking for a Senior Software Engineer who will be responsible for designing, developing, and deploying high-quality software solutions. You will work on complex software projects, contributing to ...

Principle Java Engineer • Salary to £70k + Company Options Scheme • Hybrid working between your home, their offices (London Vauxhall) & client sites. NB: Please only apply if you are a UK National and able to achieve SC (ideally DV) clearance i.e. you have at least 5 years residency … growing fast and looking for bright, dynamic people to help build their business. Role They’re looking for an experienced (Principle/Team Lead) Java Engineer to join their implementation team. You’ll work across Camunda BPMN/DMN process automation, API integration, and microservice orchestration — helping their public-sector ...

agile environments Desirable Experience Docker, Docker Compose Terraform or other IaC tools EF Core, relational DB experience NoSQL (MongoDB, Cosmos DB) Microservices in Java/JS/TS Experience with LLM/AI integration frameworks (e.g., LangChain) Familiarity with modern design systems Additional Information A flexible benefits package is available ...

agile environments Desirable Experience Docker, Docker Compose Terraform or other IaC tools EF Core, relational DB experience NoSQL (MongoDB, Cosmos DB) Microservices in Java/JS/TS Experience with LLM/AI integration frameworks (e.g., LangChain) Familiarity with modern design systems Additional Information A flexible benefits package is available ...

collaborating with skilled professionals to deliver high-quality results. What you'll be doing: Design, develop, and maintain scalable data pipelines and microservices using Java and Spring Boot. Containerise applications with Docker and deploy them efficiently. Integrate data from multiple sources, ensuring flows are clean, reliable, and consistent. Optimise pipeline ...

Crossplane, Ansible). Proven ability to architect and deploy containerised systems (Docker, Kubernetes) at scale. Proficiency in one or more modern languages — Go, Python, Java, Ruby, TypeScript. Solid understanding of CI/CD , DevOps automation , and secure cloud operations . Strong communication and stakeholder management skills — able to influence ...

stakeholder engagement skills Desirable: Experience with configuration management tools (Ansible, Puppet, Chef, Packer) Exposure to testing tools (Selenium, Cucumber) Experience supporting modern application stacks (Java, Node.js, SQL/NoSQL ...

supporting change at scale• Experience designing and evolving distributed systems, services, and APIs in cloud environments• Strong backend engineering experience (for example with Java and Spring Boot), and comfort working in modern product development teams• A collaborative approach, with clear communication and thoughtful decision-making around quality, risk, and deliveryEvent ...

Description Senior Java Developer - Multithreading/caching - sought by leading investment bank based in London - Contract *inside IR35 - umbrella* Key Responsibilities Develop and maintain high-performance backend services for complex data processing workloads. Design scalable architectures for large-volume calculations and data pipelines. Work closely with cross-functional teams … joins, and large/complex datasets. Leverage AI tooling to enhance productivity in coding and system design. Required Skills & Experience 8+ years' experience in Java backend development (Java 17+). Degree in Computer Science, Software Engineering, or related field. Strong expertise in Java + Spring Boot/Spring Data/ ...

Senior Java Software Engineer – Java 11+, Spring, Spring Boot, Microservices, Kafka, Akka, Docker/Kubernetes, Real-time, TDD/BDD, Reactive Programming, MongoDB Payments 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. … 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 availability ...