26 to 50 of 266 Java Jobs in London

microservice-based systems. Proven capability building and operating production applications with embedded AI or machine learning features. Strong programming skills in languages such as Java, Python, or Node.js, with exposure to modern frontend frameworks where relevant. Solid experience integrating systems via APIs, including REST and event-driven patterns. Hands ...

modelling - able to critique models and drive refactoring - Skilled in product modelling (TMF ODA/SID, canonical data models) - Proficient in backend programming (Python, Java, C++) - Experienced in data persistence across SQL (Postgres, MySQL), NoSQL (Cassandra, MongoDB) and TSDB ( TimescaleDB , InfluxDB , Prometheus TSDB) - Skilled in schema design, optimisation and performance ...

/CD, architecture) and can apply them to solve well-defined problems independently and with your team. You are comfortable writing code in C#, Java or Python. Work-with-purpose: You can articulate the value of your own work in larger projects or team-wide goals. You have the space ...

global platform for the LGBTQ+ business community. Please do not contact the recruiter directly. Accepting applications until: 3 July 2026 Job Description Your Role: Java Developer The Commercial Technology team develops and maintains the products that drive Global's commercial revenues across both Radio and Outdoor. As a Java Developer … Global, you'll work across a suite of Java 17+ (mostly Java 21) and Spring Boot microservices, some of which are event-driven. You'll contribute across the full technical lifecycle, from CI/CD pipelines and infrastructure to production monitoring, using modern AI tools as part of your daily ...

product managers, and senior stakeholders. Key Skills: Enterprise & Solution Architecture AWS/Cloud-Native Platforms Microservices & APIs DevOps, CI/CD & Infrastructure as Code Java, C#, TypeScript, JavaScript, or C++ Financial Services, Capital Markets, Trading Platforms, or Front Office systems experience Desirable: Kubernetes, Docker, and modern distributed architectures ...

metrics. Technical Environment You will be working within a cloud-hosted environment that includes: AWS (Amazon Web Services) SQL-driven validation and metadata frameworks Java Spring Boot applications AWS Cognito Identity and Access Management (IAM) solutions Government authentication and access management integrations What We're Looking For Essential Skills & Experience ...

teams to deliver reliable, high-quality releases. Troubleshoot infrastructure, application, and deployment issues across complex environments. Your Skills: Ansible Terraform RHEL AWS EKS K18s Java SpringBoot micro services Oracle RDS Benefits Include: Contributory pension scheme Employee Assistance Program Medical and Dental cover 22 days holiday + bank holidays Maternity ...

teams to deliver reliable, high-quality releases. Troubleshoot infrastructure, application, and deployment issues across complex environments. Your Skills: Ansible Terraform RHEL AWS EKS K18s Java SpringBoot micro services Oracle RDS Benefits Include: Contributory pension scheme Employee Assistance Program Medical and Dental cover 22 days holiday + bank holidays Maternity ...

both technical teams and executives. Preferred Advantages B2B SaaS experience. BSc in Computer Science or Engineering. Comfortable coding in any high-level programming language (Java, Go, Python). Cultural Fit We’re seeking candidates who are hungry, humble and smart. Coralogix fosters a culture of innovation and continuous learning, where ...

architecture for large-scale platforms or services. Solid understanding of software development methodologies and data modelling principles. Deep expertise in Python (or failing that, Java). Strong proficiency in backend development and familiarity with modern AI/LLM tools and frameworks (e.g., LangChain, LangGraph). Strong experience with Kubernetes ...

Java Developer - multiple roles £550-570/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 … 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. ...

Senior Java Backend Engineer (Distributed Systems & Messaging) Location: London, UK (Hybrid) Role Type: Permanent Tech Stack: Java 8+, Concurrency, Apache Kafka/JMS/TIBCO, Spring Boot, Microservices, Low-Latency About the Team & Platform We are building and scaling a complex, high-throughput, electronic trading platform distributed across several international … domain experts, software architects, and DevOps teams within an Agile Scrum framework to continuously roll out platform improvements. What We Are Looking For Core Java Expertise: Strong background in Java 8 or higher, with an elite understanding of multithreading, concurrency models, and non-blocking asynchronous processing. Messaging & Streaming Middleware: Heavy ...

Java Software Developer £600/day Inside IR-35 for an initial 6 months with extension likely London - 3 days per week on site Active SC Clearance essential We're looking for a Java developer to join an established engineering team working on backend services hosted in Azure. The role … focuses on building and supporting Java applications and APIs, using VS Code as a primary development environment. You'll work closely with other engineers across backend, frontend, and DevOps, contributing to cloud-based systems. About the role Java backend development role Focus on services and APIs Cloud-hosted environment ...

Linux. Experience working with AWS and Docker. Experience with Databricks and/or Snowflake Desired, but not essential: Experience with C/C++ or Java Knowledge of database optimisation and administration ...

public sector governance and assurance processes. Strong technical architecture background - experience designing secure, scalable systems using modern technologies (cloud, open source, and languages like Java, Python, JavaScript or Ruby). Leadership & communication skills - able to guide teams, influence stakeholders, and clearly communicate with both technical and non-technical audiences. Agile ...

Developer Associate, or DevOps Engineer are highly desirable Desirable Experience Any exposure to the following would be advantageous: React or modern front-end frameworks Java, Go, C#, Rust, or other strongly typed languages Internal platform engineering or developer platform ownership Event-driven architectures using EventBridge, Kinesis, Kafka ...

security control Security & Resilience: Deep understanding of threat modelling, authentication patterns, and observability Modern Development: Familiarity with languages such as Ruby, Python, or Java, alongside CI/CD, TDD, and containerisation Communication: Exceptional ability to simplify complex topics and build consensus across diverse groups Desirable Attributes Experience with enterprise ...

modern SDLC and TDD. Strong data and architecture skills: modelling across relational, columnar and vector stores, grounded in sound architectural principles. Languages: Python, Java, TypeScript/JavaScript, SQL and relevant AI SDKs. Leadership experience – plan and sequence work, manage scope, dependencies and priorities, remove blockers, and drive delivery. Excellent communication ...

including microservices, APIs, event-driven architecture, and domain-driven design. Experience with cloud platforms and containerization technologies. Strong knowledge of modern programming languages (e.g., Java), database technologies (Oracle, MSSQL), and messaging systems (e.g., Kafka). Expertise in building and scaling data-intensive applications and data analytics platforms. Leadership & Management: Exceptional ...

solutions. Minimum qualifications 8+ years of software engineering experience, with at least 1+ years in a people leadership role. Strong backend development experience with Java/Spring Boot . Proven experience designing and operating large‐scale, distributed production systems. Strong system design and object‐oriented design fundamentals. Ability to balance ...

/CD, modern SDLC, TDD, and code review. Data: Working with relational, columnar and vector stores, grounded in sound data-modelling principles. Languages: Python, Java, TypeScript/JavaScript, SQL and relevant AI SDKs. Communication: Clear written and verbal communication with technical peers and stakeholders. Measurement: Instrumenting solutions to capture usage ...

CircleCI) Ability to define and improve test coverage, reliability, and signal quality (e.g. reducing flakiness, improving feedback loops) Strong programming skills (JavaScript/TypeScript, Java, or Python) with the ability to build maintainable, scalable test and quality tooling Hands-on experience testing web and mobile applications (iOS and Android) Strong ...

write code, you can evaluate AI architectures, and you can sit in a room with engineers and contribute — not observe.Our primary stack is **Java** and **React**, with **Python** supporting scripting, data pipelines, and AI/ML integrations. Our engineering philosophy is AI-native — we expect you to understand and leverage … regulated financial services environment.**Technical Depth and Hands-On Delivery*** Prototype solutions, contribute to technical design discussions, and validate approaches by building — using Java, React, or Python as the situation demands.* Understand the current landscape of foundation models and make informed product decisions about when to use fine-tuning vs. ...

about learning new things and keeping up to date Happy to work in a test-driven and Agile development fashion YOU HAVE: Experience in Java server-side software development. Expertise in Java technologies, including related Java and other technologies. Solid experience programming using Core Java. Minimum Java 17 General knowledge … technical stakeholders. Strong analytical and problem-solving skills. Strong Exposure to standard financial interchange protocols i.e. FIX, ITCH YOU WILL: Design and develop Java applications and libraries Write clean, efficient and well-documented code. Troubleshoot and debug Java applications to ensure smooth performance. Conduct unit testing to ensure code quality ...

changes and improvement. Demonstrated leadership and project management skills. Technical Skills Must have Strong experience in full stack development using React, TypeScript, Node.js, stylesheets, Java/JVM‐based languages such as Java, Kotlin, Microservices. Strong hand‐on experience designing and building a UI framework using React aligned with latest … framework practices and guidelines. Strong experience of API Development and its ecosystems. Hands‐on working experience with React, JavaScript, Java/Spring/Spring Cloud/Spring Data JPA/Spring Boot Microservices. Should have troubleshooting skills using debuggers, logs, etc. Strong understanding of test‐driven development using Jest, Cypress ...