2,076 to 2,100 of 2,319 Java Jobs in London

cases by delivering clean, reliable data Identify gaps and drive platform improvements or new capabilities Gradually influence architecture decisions and engineering standards Experience with Java development to build services and libraries with Java 21 and above Hands-on experience with foundational AWS services, such as; ALB, ECS, S3, ElastiCache ...

Java Technical Lead/Delivery Manager 6 Month Contract London (1 Day Per Week Onsite) Competitive Day Rate We are supporting a major investment banking client on a strategic xVA pricing and regulatory programme, alongside the decommissioning of legacy platforms. As part of this initiative, we are seeking an experienced … Java Technical Lead/Delivery Manager who can combine strong technical leadership with proven delivery management experience. This is a highly visible role, working across a global engineering team and engaging with senior stakeholders to drive the successful delivery of critical front-office and risk technology initiatives. The Opportunity ...

Java Technical Lead/Delivery Manager 6 Month Contract | London (1 Day Per Week Onsite) | Competitive Day Rate We are supporting a major investment banking client on a strategic xVA pricing and regulatory programme, alongside the decommissioning of legacy platforms. As part of this initiative, we are seeking an experienced … Java Technical Lead/Delivery Manager who can combine strong technical leadership with proven delivery management experience. This is a highly visible role, working across a global engineering team and engaging with senior stakeholders to drive the successful delivery of critical front-office and risk technology initiatives. The Opportunity ...

Bring: Demonstratable ability to work effectively in a collaborative team environment, mentoring junior team members and contributing to a positive team culture. Experience with Java development to build services and libraries with Java 21 and above. Experience in developing and supporting backend systems for data processing within AWS. Hands ...

Citi is seeking a Core Engineering Java Development Lead – FX Tech (SVP) to architect, build, and evolve robust Java services for global finance. You will shape technical direction, work with senior engineers and quants, and deliver high-quality systems in a modern event-driven environment. The role emphasizes delivery, maintainability ...

McGregor Boyall is seeking a Senior Java Developer for its London Electronic Trading engineering team. You will design low-latency Java applications, work with traders and quantitative teams, and help scale critical trading platforms across asset classes. Hybrid role with three days in the office, you will contribute to high ...

systems covering various aspects such as trading systems, exchange connectivity solutions, and monitoring systems. Apply your expertise in multiple programming languages, including Python or Java, to successfully accomplish development tasks. Conduct thorough testing at the unit, functional, and integration levels to ensure software reliability and performance. Handle both legacy code … traders, researchers, and software engineers. Qualifications: Experience in designing, developing, and supporting mission-critical, high-performance applications. Strong professional experience in Python (5+ years), Java and or C++Demonstrated expertise in network communication, including multicast and WebSockets. Proficiency in inter-process messaging, micro-service architectures, and API design. Familiarity with Functional ...

growth and stability. The position is for a Ruby Web Application Developer to build new and maintain existing Rails applications communicating with a Java API. The developer will be working within an Agile team to design and deliver high quality applications. The Ruby/JavaScript Web Developer will also … development has sufficient test coverage to maintain qualityThe project will be stabilising the development of their web based platform which is built on Java and AWS EC2 and Ruby. This project will involve getting to know the platform and then adding greenfield functionality as well as brining the platform together. ...

stability. The position is for a hands on Lead Developer to build new and maintain existing frontend applications and sites communicating with a Java API. The current team has 2 bleeding edge ruby and frontend developers who need leadership to keep them from evangelising the world off. The Frontend team … development has sufficient test coverage to maintain qualityThe project will be stabilising the development of their web based platform which is built on Java and AWS EC2 Javascript and Ruby. This project will involve getting to know the platform and then adding greenfield functionality as well as brining the platform ...

London Stock Exchange Group (LSEG) is seeking a Senior C++/Java Developer in London. The role focuses on designing, developing, and delivering high-quality software solutions across C++ and Java stacks within a defined product or platform area. You will collaborate with senior engineers, architects, and product managers ...

applications and services. Proven experience managing a team of engineers across global locations. Extremely proficient in Python and an object-oriented language such as Java or C/C++. Skilled in implementing data visualizations using Tableau, Dash, or Power BI. Familiarity with Scala, Java, and/or kdb/Q. ...

Required Skills Kotlin TLS DNS unit testing AWS MCP AI Java TypeScript CDK AWS CDK Networking CI/CD Job Summary Backend Software Engineer – AWS CDK & Edge Platforms Location: London (Hybrid) Pay Rate: £400/day Inside IR35 Duration: 12 Months The Opportunity Looking to work on high-scale distributed … latency client routing. Collaborating within an established engineering team to maintain operational standards. What We Are Looking For Solid software engineering background with Java, Kotlin, or TypeScript. Practical experience deploying and managing workloads on AWS using AWS CDK. Baseline knowledge of web networking (HTTP, TLS, DNS, load balancing). Familiarity ...

Support, maintain, and enhance application hosting and build platforms across AWS, Kubernetes, Jenkins, and GitHub Develop automation and tooling using Python, Java/Groovy, Go, and Terraform Lead code reviews and champion engineering best practices for security, performance, maintainability, and testing Contribute to technical standards and continuous improvement initiatives Maintain … complex engineering problems and maintain reliable production environments while mentoring other engineers. Highest-signal resume keywords AWS Kubernetes Python Terraform Code Reviews Hard Skills Java Groovy Go Automation Infrastructure Testing Distributed Systems Software Development Lifecycle Maintainable Code Performance Optimization Security Best Practices Soft Skills Collaboration Mentoring Problem Solving Communication Stakeholder ...

seeking someone to join our team as an experienced algorithmic trading Java developer to support the Structured and Exchange-Traded Product market-making businesses. The candidate should possess good analytical skills and computer programming experience and a logical approach to problem solving. The role involves building, deploying and supporting algorithmic … clients and our communities in more than 40 countries around the world.What you'll do in the role:You will be using core Java to build and enhance trading strategies and engines.The role involves working directly with trading, quant and IT teams to advance the platform and the businesses ...

evolve backend services that support the complete customer order lifecycle, from order creation through to fulfilment and completion. Develop scalable microservices and APIs using Java/Kotlin, enabling reliable and efficient order processing across multiple channels. Contribute to event-driven architectures using Kafka to support high-volume transactional workflows across … complex commerce challenges. Who You Are A strong backend engineer with significant experience designing and operating scalable services in production environments. Knowledge working with Java and/or Kotlin and modern microservice architectures. Passionate about building reusable backend capabilities that enable multiple teams and products. Solid understanding of distributed systems ...

stack and want to keep growing as full-stack engineers. You’ll work mainly with TypeScript, React and Node, with opportunities to contribute to Java, Scala, iOS and Android as you grow across the stack. You do not need to be an expert in everything, but you should be adaptable … needed. Key Responsibilities Build and maintain full-stack applications, integrations and internal tools using React, TypeScript, Node.js, Express and SQL, while also contributing to Java, Scala, iOS and Android Work closely with Product Support to build tools that help them resolve more issues quickly and independently Investigate and resolve complex ...

focus (quiet coding area, loud games room).The position is for a senior Ruby Developer to build a new Rails application communicating with a Java API. The current team has 5 bleeding edge ruby and frontend developers who need some help to keep them from evangelising the world off. … sharp end of technology and the possibility of making serious money doing something you are passionate about. My client is based in Central LondonRuby, Java, Ruby on Rails, CSS, HTML5, Linux REST, Javascript Lead Ruby Developer ...

regularly with product leads across the technology organization and discuss opportunities for improvement to existing and future technology solutions. You will be using core Java development to build and enhance trading strategies and engines The role involves working directly with the global trading, quant and IT teams to advance … deploying the changes The systems you will work on are high volume, low latency, resilient, scalable and message-driven based on cutting edge Java and utilising the latest hardware What you’ll bring to the role: Ability to effectively manage multiple functions or guide junior staff and initiatives. Advanced understanding ...

systems covering various aspects such as trading systems, exchange connectivity solutions, and monitoring systems. Apply your expertise in multiple programming languages, including Python or Java, to successfully accomplish development tasks. Conduct thorough testing at the unit, functional, and integration levels to ensure software reliability and performance. Handle both legacy code … among traders, researchers, and software engineers. Qualifications: Experience in designing, developing, and supporting mission-critical, high-performance applications. Strong professional experience in C++ , Rust, Java and PythonDemonstrated expertise in network communication, including multicast and WebSockets. Proficiency in inter-process messaging, micro-service architectures, and API design. Familiarity with Functional Programming ...

systems covering various aspects such as trading systems, exchange connectivity solutions, and monitoring systems. Apply your expertise in multiple programming languages, including Python or Java, to successfully accomplish development tasks. Conduct thorough testing at the unit, functional, and integration levels to ensure software reliability and performance. Handle both legacy code … among traders, researchers, and software engineers. Qualifications: Experience in designing, developing, and supporting mission-critical, high-performance applications. Strong professional experience in C++ , Rust, Java and PythonDemonstrated expertise in network communication, including multicast and WebSockets. Proficiency in inter-process messaging, micro-service architectures, and API design. Familiarity with Functional Programming ...

Kafka or event-streaming experience desired Exposure to LLM Gateways, MCP, A2A, or agent identity/authorisation patterns desired Scripting or development background in Java or Python desired Startup or scale-up experience desired Core Competencies Demonstrates expertise in managing enterprise accounts, driving customer value realization, and ensuring retention through … Implementation with Docker and Kubernetes German-Speaking Hard Skills API Integration Cloud-Native Platforms Value Realisation Retention Management Docker Kubernetes API Security IAM Protocols Java Python Soft Skills Exceptional Communication Relationship Building Advisory Skills Escalation Management Industry Keywords SaaS Infrastructure Vendor Post-Sales Solution Architect Solution Engineer Technical Account Manager ...

tuning (LoRA, QLoRA), and full fine‐tuning, tailored to diverse product requirements. You will design and build production‐grade inference systems, working across Swift, Java, and Python to integrate ML capabilities seamlessly into Apple's ecosystem. As a senior technical contributor, you will set engineering standards, mentor engineers, and influence … experiences Build end‐to‐end AI‐powered products and features, taking full ownership from problem definition and prototyping through production release, working across Swift, Java, and Python codebases Establish engineering excellence across the ML development lifecycle, including robust testing, reproducibility, monitoring, documentation, and CI/CD for model and data ...

growing Consultancy in London seeks a Java/React Developer for a hybrid role focused on a Banking project. The successful candidate will lead engineering efforts across teams, focusing on software design, implementation, and maintenance. They must write high-quality, modular code and possess experience with Java, React, and agile ...

design financial software solutions that scale with Prime Video’s global growth. Code Excellence: Develop clean, maintainable, and efficient code in a modern language (Java, C++, C#), ensuring high-quality software delivery. Technical Leadership: Drive the architecture and implementation of complex systems, contributing to high standards of performance, reliability … team initiatives focused on enhancing software development practices, improving efficiency and scalability. Requirements Experience: 5+ years of professional software development experience, with proficiency in Java, C++, or C#. Education: Bachelor’s degree in Software Engineering, Computer Science, or a related field. Technical Leadership: Proven experience as a mentor, tech lead ...

making corrections — with a primary focus on Python across backend services, data pipelines, and ML infrastructure, alongside JavaScript (including ReactJS), C/C++, Java, Rust, and Go. You will evaluate and refine AI-generated code for efficiency, scalability, and reliability, and work with cross-functional teams to enhance enterprise-level … training initiatives by curating code examples, building solutions, and correcting code — primarily in Python, with additional work in JavaScript (including ReactJS), C/C++, Java, Rust, and Go. Evaluate and refine AI-generated code to ensure that it is efficient, scalable, and reliable. Collaborate with cross-functional teams to enhance ...