151 to 175 of 287 Java Jobs in London

Stack Ownership: Take total agency over the stack, connecting new services and remodeling infrastructure to create a seamless experience. Mission-Critical Problem Solving: Use Java, Kotlin, and Python as tools to solve ambiguous, high-stakes requirements where reliability is a matter of global security. What you'll bring High Ownership ...

Machine Learning, including agent-based AI, RAG (Retrieval Augmented Generation), multi-agent systems and conversational agents. Strong programming skills in Python, Java or .NET. Experience with GenAI and LLMs (e.g. ChatGPT, Claude, Llama, OpenAI), including prompt engineering, fine tuning and advanced search. Familiarity with AI agent frameworks (e.g. Autogen ...

Back End Java Developer with experience within the iGaming and Gambling sector looking for a new and exciting challenge? BENEFITS : up to £95k depending on experience, fully remote, excellent benefits package You will be joining a rapidly expanding company within the iGaming sector, who are committed to providing top-tier … brands within our market, blending sports betting and online casino entertainment on a cutting-edge, custom-built platform. You will be a skilled Senior Java Backend Developer who is a self-motivated professional with a strong track record and a passion for excellence. You'll play a key role ...

Vitality Offices. Full time hours. We are happy to discuss flexible working! Top 3 skills required: To be fully proficient in Java Familiarity with DevOps tools To be able to identify key areas of improvement within Vitality's processes and standards What this role is all about: Software Engineers … thrive? Demonstrable expertise with 5+ years of experience in the use of appropriate tools/technologies for the design, development, build, testing & deployment of Java/JEE applications. Understanding of Agile Methodologies Demonstrated expertise with Spring Boot Demonstrable experience in integrating disparate applications and technologies using Java Experience with ...

Java Software Engineer – Data Engineering Up to £70,000 + bonus and benefits 4:1 hybrid in office – City of London Quant Capital is hiring for a small, high-performing market maker in London. This is a junior-to-mid role focused primarily on Java development, with a secondary responsibility … PostgreSQL. This is a growing team focused on data ingestion and building tooling for the wider firm. What you’ll do: Build and enhance Java backend services (APIs, batch jobs, integrations) used across the business Write clean, testable code with solid engineering discipline (testing, code review, debugging, production support) Maintain ...

Lead Software Engineer – Java Microservices | London (1 day per week on-site) | £74,000 – £92,000 + Package We’re partnering with a leading UK bank to recruit a Lead Software Engineer with strong Java and microservices expertise. This is a hands-on role building high-performance, scalable software … building robust microservices that support high-traffic user experiences, serving thousands or millions of concurrent users. What We’re Looking For Proven experience developing Java microservices for high-traffic applications (retail, e-commerce, media, or streaming platforms). Hands-on experience with the full software lifecycle in agile environments ...

team within the Pricing and Risk area , where youll work on our low latency, high-frequency trading platform . You will use cutting-edge Java programming techniques so experience in this area is essential . As a Senior Developer, youll not only code but also take on key design responsibilities ...

cloud hosting. Key Responsibilities Lead a time-boxed 6-week technical investigation and PoC . Analyse the current legacy integration platform (WebLogic, Java Integration, Oracle RAC). Review design hosting architecture options. Build prototypes to validate recommended approaches. Produce clear architectural outputs and recommendations for stakeholders. Required Skills & Experience Proven ...

well as very competitive salaries, our client offers an excellent working environment. Skills required: Proficient in several of the following: Python, C#, C++, Java Mathematical Modelling Mathematical skills, particularly a keen understanding of probabilities and statistics Analytic mindset Strong communication skills Accuracy and attention to detail Experience in data science ...

well as very competitive salaries, our client offers an excellent working environment. Skills required: Proficient in several of the following: Python, C#, C++, Java Mathematical Modelling Mathematical skills, particularly a keen understanding of probabilities and statistics Analytic mindset Strong communication skills Accuracy and attention to detail Experience in data science ...

Responsibilities Gather and translate business requirements into functional and technical solutions Design and develop changes within T24 (TAFJ/jBASE/InfoBasic/Java) Configure modules including Payments and Arrangement Architecture (AA) Support integrations, interfaces, and system upgrades Provide production support and troubleshooting as required Key Requirements Strong hands ...

hardware, network products, system software, and security measures. Qualifications - 5-10 years of experience in software development, with a strong background in Scala/Java 8 and ServiceNow - Proven experience with AWS (Amazon Cloud) and familiarity with DevOps tools. - Expert knowledge in transforming business problems into effective technical designs ...

consulting capacity to optimise use of trading products Key Skills & Experience Strong quantitative mindset with passion for data and research Strong Python development skills (Java exposure beneficial but not core) Experience with electronic trading strategies and market microstructure Knowledge of European equities markets Exposure to distributed systems and large-scale ...

part in shaping architecture, mentoring engineers, and driving best practices across the platform. They’re looking for people with experience in: Kotlin (or strong Java engineers willing to transition) AWS or other major cloud platforms Event-driven & microservices architectures Working in modern, product-driven tech environments Leading teams while remaining ...

desirable, though Redshift or Synapse are also suitable - Experience with data orchestration tools such as Airflow or Prefect - Strong coding ability in Python, Java, or Scala - Experience building data infrastructure from scratch - Comfortable working with both batch and streaming data - Experience integrating data platforms with microservices and real time systems ...

Java Software Engineering Manager (x2) - 6 month - 3 days pw onsite London - Circa £650pd outside IR35 We’re looking for a hands-on Java Software Engineering Manager to lead a high-performing team building reliable, scalable systems. You’ll balance technical leadership with people management, setting clear direction while staying … close enough to the code to guide architecture and best practices. Ideally you will have managed teams working with Java and modern backend technologies, a proven track record of leading engineers, and a pragmatic, calm approach to problem-solving. Technical Requirements Strong commercial experience with Java/managing JVM engineers ...

Full Stack Developer (80% React/20% Java) Location: Fully Remote (UK Based) Rate: £525 per day (Inside IR35) Clearance: Active SC Clearance (Essential) Contract Length: Initial 6 months We are looking for a Frontend-heavy Full Stack Developer to join a long-term digital transformation programme. This … high-impact role within a complex, state-driven environment, perfect for a React expert who is comfortable dipping into the Java backend when required. The Technical Balance React (80%): You will lead on the frontend, building high-performance, accessible (GDS-aligned) user interfaces and complex dashboards. Java (20%): You will ...

IDAM Back-end Java Developer - SC Cleared Rate: £500 - £535 a day IR35 : Inside IR35 Location: Remote within the UK Duration: Initially 6 months Clearance: Active SC Clearance required You will join a global IT consultancy who are delivering digital transformation to public sector body. They are looking … back-end Java Developer with proven IDAM (Identity and Access Management) experience. You will be part of a continuous improvement squad delivering enhancements and new features alongside BAU work (i.e. incidents and support maintenance activities). In addition, you will be involved in helping our client transform their IDAM service ...

Backend Software Engineer/Developer (Java Spring Boot) London/WFH to £85k Are you a Backend Software Engineer looking for an opportunity where you can make an impact? You could be progressing your career in a senior, hands-on role at a growing US based tech company that provide … experienced, backend focused, Software Engineer/Developer with a broad knowledge of building software products and associated architectures You have strong Java development skills including a good knowledge of Spring Boot and microservices You have experience with public cloud technologies, AWS preferred You have a good appreciation of front ...

containerised workloads Driving an automation-first approach across infrastructure, CI/CD, and operations Developing tooling and platform services using Python and/or Java Owning and improving CI/CD pipelines and release processes Implementing Infrastructure as Code (Terraform/CloudFormation or similar) Improving reliability, observability, and resilience across … Engineer Hands-on AWS experience in production environments Strong Kubernetes experience (deploying, operating, scaling clusters) Solid programming experience with Python and/or Java Strong focus on automation across infrastructure, delivery, and operations Experience with Infrastructure as Code (Terraform, CloudFormation, Bicep, etc.) CI/CD experience (GitHub Actions, GitLab ...

containerised workloads Driving an automation-first approach across infrastructure, CI/CD, and operations Developing tooling and platform services using Python and/or Java Owning and improving CI/CD pipelines and release processes Implementing Infrastructure as Code (Terraform/CloudFormation or similar) Improving reliability, observability, and resilience across … Engineer Hands-on AWS experience in production environments Strong Kubernetes experience (deploying, operating, scaling clusters) Solid programming experience with Python and/or Java Strong focus on automation across infrastructure, delivery, and operations Experience with Infrastructure as Code (Terraform, CloudFormation, Bicep, etc.) CI/CD experience (GitHub Actions, GitLab ...

Lead/Senior Software Engineer for 12 month contract on site in London. Working for a Big 4 professional services firm delivering software projects. Java, Python, Cloud Native AWS, AI, DevOps, CI/CD - Jenkins/GitLab Lead/Senior Java/Python EngineersBig 4 Consultancy 12 month contract … site in London Location : London (5 days in office) Duration 12 months Key Skills Proficient in Java/Python concepts and proficient advanced experience. Hands-on practical experience delivering system design, application development, testing, and operational stability, particularly in cloud environments. Advanced knowledge of cloud-based systems, artificial intelligence ...

Looking to join a company when you can make a real impact? Do you have 4+ years commercial experience developing software with Java & JavaScript? 🚀 Full Stack Engineer – SaaS Solutions 🚀 💰 Salary – up to £75k + bonus 📍 Location – hybrid working 2 days a week in modern London office I am excited … Defense, HM Treasury, and the Departments of Work & Pensions and International Trade. They are looking for a motivated Full Stack Engineer with experience with: Java Spring Boot Microservices JavaScript Frontend frameworks: they use Vue.js but are also open to React and Angular Containerisation using Docker, Kubernetes Developing cloud-native applications ...

where you'll balance technical delivery with mentoring and architectural direction. Key Responsibilities Lead the design, development, and deployment of full-stack applications using Java, React, JavaScript , and AWS . Provide technical leadership and direction to development teams. Collaborate with architects, product owners, and stakeholders to deliver secure and scalable … junior and mid-level developers. Ensure all solutions meet government and security compliance standards. Skills & Experience Essential: Active SC Clearance . Strong background in Java and React development. Proficiency with AWS and modern JavaScript frameworks. Experience leading technical teams or projects in an agile environment. Excellent problem-solving, communication ...

Lead/Senior Java/Python Engineers Big 4 Consultancy 12 month contract On site in London Location : London (5 days in office) Duration 12 months Key Skills Proficient in Java/Python concepts and proficient advanced experience. Hands-on practical experience delivering system design, application development, testing, and operational ...