51 to 75 of 79 Java Jobs in Central London

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 ...

Java Developer | Backend | Microservices | FinTech | London | Hybrid | £90k I'm proud to partner with a global financial organisation, creating an app that allows people in countries like Mexico, Argentina, Colombia, and Brazil manage money in digital dollars and digital euros and it’s designed to protect users from local currency … with partners such as Mastercard, Stripe, OpenAI to make sure they leverage latest technology in all their products.They are looking for an experienced Senior Java Developer, predominantly on version 21 with PostGres Database and Spring Boot, to help develop their rapidly growing application, by building REST APIs, Microservices and evolving ...

months contract/Hyrbid/2 days in office London/750 per day Inside Ir 35 Senior Java Developer (VP) Role Overview We are seeking a Senior Java Developer with deep Electronic Trading expertise to join our E-Fixed Income (eFI) Development Team in London. The team builds … TransFICC connectivity within the eFI ecosystem Identify and eliminate performance bottlenecks through profiling, tuning, and architectural improvements Develop lock-free, allocation-free, performance-critical Java components Deliver high-quality software using Test-Driven Development and Domain-Driven Design Partner with Traders, Financial Engineers, and Business Analysts to translate trading requirements ...

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 ...

clients. We are looking for a candidate with the following experience; Experience of Performance testing using JMeter and designing performance testing solutions. Good Java programming skills. Experience of a performance monitoring tool. Participate in the continuous improvement of the Quality Engineering process, including the implementation of best practices and strategies. ...

engineering experience at senior or lead level Deep expertise in cryptography and HSM technologies (e.g. nShield or Luna, PKCS#11) Strong software engineering skills (Java and/or Python preferred) Confidence to lead technically, influence decisions, and set best practice Not a perfect match on paper? Apply anyway. If youre ...

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 ...

Role: Lead Java Engineer – Risk & Compliance Platform Location: London (hybrid) Salary: £125,000 – £150,000 + Bonus Are you an exceptional Java engineer ready to step into a true leadership role within one of the most critical platforms in global banking? We’re working with a top-tier financial institution … comfortable leading complex engineering initiatives, influencing design decisions, and mentoring other engineers within the team. You’ll bring strong experience in: Core Java , with a deep understanding of multithreading and concurrency Grid Computing Cloud-native development , ideally on GCP Kubernetes and containerised environments Designing and delivering systems that operate ...

Java Software Engineer/Developer (Java AWS Spring Boot) London/WFH to £90k Are you a backend focussed Java technologist who enjoys building systems from scratch? You could be progressing your career at a global, prime broker that is replacing the legacy infrastructure used across capital markets with ...

Lead Java Developer | Backend | Microservices | FinTech | London | Hybrid | £140k I'm proud to partner with a global financial organisation, creating an app that allows people in countries like Mexico, Argentina, Colombia, and Brazil manage money in digital dollars and digital euros and it’s designed to protect users from local … with partners such as Mastercard, Stripe, OpenAI to make sure they leverage latest technology in all their products.They are looking for an experienced Senior Java Developer, predominantly on version 21 with PostGres Database and Spring Boot, to help develop their rapidly growing application, by building REST APIs, Microservices and evolving ...

Java Software Engineer with around 3-6 years professional, post-graduate experience sought by one of the original Quantitative Hedge Funds, with a 20+ year track-record. The firm are renowned for a healthy, supportive, and collegiate working environment and culture, with no siloes, boasting an industry-leading staff tenure. … Corporate Functions. The team deal directly with business users right across the firm, taking ownership of analysis, design, architecture, and implementation, working primarily with Java, but also with Python, SQL and to a lesser extent, MATLAB. They currently have an opening for a mid-level hire in the team, with ...

Trading London Atrium EMEA is looking for several Senior Full-Stack Engineer with good experience of FX e-Trading (React/TypeScript + Java) to help architect and build a new FX e-trading platform from the ground up, working across the stack to deliver high-performance, resilient, and secure … PAYE/Umbrella options. Lead design and development of full-stack features: React/TypeScript web apps, desktop container integrations (OpenFin or similar), and Java services. Architect and implement scalable, event-driven, and microservices-based backend components (e.g., Spring Boot), including APIs, market data, order/risk workflows, and real ...

Your responsibilities: Design and develop web applications using Java (latest versions), Spring Boot, and AWS technologies. Architect and implement RESTful APIs for distributed enterprise-grade systems. Develop robust, scalable, and high-performance microservices leveraging Spring Boot and modern design patterns click apply for full job details ...

Java Developer | London/Hybrid | £100,000 - £140,000 | Java 21 | Microservices | TDD | AWS | PostgreSQL | Kubernetes | Fintech | Digital Banking Looking to join a company who are making waves within the fintech space? Want to work with the latest Java technology? I am supporting a rapidly growing fintech scaleup … backed by the same investors who backed the likes of Coinbase and Airbnb. They’re currently in growth mode and are looking for multiple Java Engineers from mid – Lead to come on board and build scalable, secure backend systems. A lot of what you will be working on will ...

near-zero downtime. Design and implement high-throughput, low-latency systems processing millions of real-time payment events Build event-driven architectures using modern Java and reactive frameworks Work extensively with non-blocking I/O, asynchronous flows, back-pressure, and concurrency Contribute to system and API design, focusing … with architects, engineers, and client teams across Europe Operate in Agile environments (Scrum/Kanban) with a strong engineering culture Tech Stack (current & evolving): Java 17+, Spring WebFlux, Akka, Kafka, reactive streams, distributed messaging, cloud-native tooling What You Bring We’re looking for engineers who enjoy thinking in events ...

native future. You will be responsible for the strategic migration from on-premise data centres to AWS , shifting from Oracle to PostgreSQL , and evolving Java EE/EJB environments into modern Spring microservices. Technical Technical Requirements To succeed in this role, you will need a deep background in enterprise-scale … migrations: Java Modernisation: Extensive experience migrating legacy Java (EE/EJB) to modern versions (Spring/Java 11). Data & Cloud Transition: Proven track record of moving workloads from Oracle (PL/SQL) to PostgreSQL and migrating from physical Data Centres to AWS. Legacy OS Knowledge: Comfortable navigating environments across ...

Graduate/Junior Developer, Python, Linux, C#, Java - London (Teck stack: Graduate/Junior Developer, Python, Linux, C#, Java, .NET 10.0, C#, J2EE, Agile, TDD, BDD, Graduate/Junior Developer) Since 2006 our client's revolutionary marketing software platform has been helping businesses all over the world to attract, engage … experiences that are relevant, helpful, and personalized. Having recently launched in the UK, they looking to hire Graduate/Junior Developer (Python, Linux, C#, Java)) to become a part of their ever-growing family. They believe that individual developers are in the best position to make decisions about what should ...

Senior Java Swing Developer – About the Role We’re looking for a Java Swing Developer to join a team working on a high-performance desktop trading platform. Working on a mission-critical system that supports FX Cash, deposits, futures, swaps, and more. The platform is rich in functionality, handles heavy … loads with low latency, and underpins key trading and sales workflows. You’ll help maintain and evolve the current Java Swing UI, while preparing for a future transition to a modern microservices-based architecture. This role offers exposure to complex, real-time systems and the chance to influence the next ...

client, a Tier 1 Investment Banking institution, is seeking a Lead Java Developer to be a key individual contributor in the rebuild of a business critical ecommerce platform. You will be working with the front office at all levels to ensure that the requirements, design and build are conducted accurately … high quality development environment. FX or rates business knowledge is an essential for this role (flow and derivatives). Key tech experience requirements: Java programming, real time systems with an emphasis on low latency techniques Microservice architectures and grid computing React front end development or interactions with front end development ...

business performance. Collaborate with traders and cross-functional teams to provide practical, incremental improvements aligned with strategic objectives. Your Expertise: Strong server-side Java development experience with concurrency skills. This position requires proven experience as a front-office engineer. Excellent problem-solving and analytical abilities. Knowledge of KDB+ and MongoDB ...

business development, internal initiatives and knowledge-sharing activities Technology Exposure You will gain experience across a broad technical landscape, including but not limited to: Java, JavaScript, Node.js, Kotlin Spring Boot and RESTful microservices Selenium, Playwright, Cucumber, REST testing NoSQL databases Git-based version control systems Your Profile Essential experience: ISTQB … Foundation certification (or equivalent experience) Strong experience in functional, integration, exploratory and manual testing Experience building and contributing to automation frameworks (Java or JavaScript) Hands-on experience with backend and frontend automated testing tools Experience working in agile delivery environments Confident using Git-based version control tools (GitHub, GitLab etc. ...

Senior Full-Stack Engineer (Java & Python) We are seeking a high-impact Senior Full-Stack Engineer to join a growing technology team for a leading investment house supporting market data services within a regulated, enterprise environment. This role sits at the intersection of data engineering, full-stack development, and business ...

around the world. As a Graduate SDET, you must have: BSc in Computer Science Degree from Russell Group University Strong comprehension of Core Java concepts and Computer Science fundamentals Hard-working & driven mindset In this position, you will gain extensive knowledge across a broad variety of technological topics: ✅ Automation testing … knowledge of REST APIs ✅ Software development experience in Java ✅ Identifying opportunities and executing improvements to quality process ✅ Developing automated tests and test frameworks ✅ Improving Continuous Integration pipeline ✅ Exposure to Docker, Kubernetes, SQL, Linus, Cloud deployments You will be joining a highly collaborative and smart engineering team, learning from some ...

will spearhead the technical evolution of a high-growth fintech platform. You will oversee 2–3 backend squads, shaping long-term microservices architecture using Java 21 and AWS. This role balances strategic technical leadership with hands-on mentorship to drive engineering excellence, security, and scalable system design. Why this role … remarkable: Lead the architectural transition of a high-stakes fintech platform using a modern Java 21 and Kubernetes stack. Join a high-growth venture backed by world-class investors during a critical phase of platform expansion and scaling. Enjoy significant ownership over the engineering culture, with the autonomy ...

scale systems sustain-ably through mechanisms like automation. Looking for someone from a software development background Ideal Candidate: Very strong engineering skills in Java, JavaScript or Python Open Telemetry experience Must have Core Java/Python Must have experience as an SRE knowledge of Python Data Structures Strong knowledge ...