1 to 25 of 37 Java Developer Jobs in the City of London

Role: Tech Lead – Java Location: Dublin, London – UK Responsibilities Provide technical leadership and mentorship to the team. Participate in software requirement gathering. Create and maintain technical documentation. To write high-quality code to meet customer requirements. Able to troubleshoot, identify root cause and implement effective solutions. Work closely with cross-functional teams to meet business objectives. Peer review of … solution architects to design scalable and efficient solutions. Ensure that software designs align with business requirements and industry best practices. Requirements Must Have: 8+ Years hands-on as a Java and Java Script Developer with a focus on Spring Boot Microservices and Spring Webflux development. Strong understanding of Java SOLID design principles. Strong understanding of Java and Java Script Low-level and High-level design patterns such as Builder pattern, Factory pattern, Visitor pattern, SAGA pattern, CQRS pattern etc. Experience in developing Domain Driven Design patterns including Value Objects, Entities, and Domain Services. Strong understanding of Java, Java Script, Spring Boot best practices, including exception/error handling best practices. Experience in More ❯

Are you an experienced Java Developer looking for a new challenge and to work for an AI startup with an important mission? 🚀 Senior Java Developer – Revolutionising Data Security 🚀 Location : Hybrid working 1-3 days a week in central London (King’s Cross) Salary : £80-120,000 + bonus + equity We are thrilled to be partnering … protected in terms of data privacy and security, amidst the GenAI boom. This is an incredibly exciting time to join the team as they are growing with multiple Senior Java Developers as well as DevOps Engineers. As a Senior Java Developer, you will: Have 5+ years experience as a Software Engineer Experience developing with: Java, Spring … Dental cover Critical illness cover If you enjoy a flexible culture with the ability to work from home 2-4 days a week, apply now for this unmissable Senior Java Developer opportunity now! Please note : Due to compliancy reasons, we will only be able to consider applications based in and eligible to work in the UK. More ❯

Senior Java Analyst Developer/Technical Consultant £120,000 Plus Bens Quant Capital is urgently looking for a Java Analyst Developer/Technical Consultant to join our high profile client. Our client is a global trading platform software business. Its products are used globally by most asset managers and pension funds. They are well known in … s) for any gaps in functionality, and undertaking development to deliver functionalities (when required). Technical Consultants/Analyst Developers must have: 8+ years’ full-stack experience as Senior Developer around digital applications, software engineering, microservices and cloud. This could include Core Java, Spring Boot, Hibernate/JPA and UI using React, Ember, JavaScript or HTML. FIX Experience More ❯

Senior Full Stack Developer/Engineer (Java Angular) London/WFH to £90k Are you full stack technologist? You could be progressing your career in a hands-on, impactful, Senior Full Stack Developer role, working on a "tech for good" product that is helping to drive efficiencies for the NHS, the core product is a highly complex … real-time shift rota application, hosted on AWS and available via the web or mobile device (iOS/Android). As a Senior Full Stack Developer you will play a crucial role in re-architecting and enhancing the scheduling platform to a Java and Angular codebase (from Ruby and TypeScript). You'll design and develop scalable backend … Java services and REST APIs and build responsive, user friendly interfaces using Angular (v15+) as well as writing and optimising SQL database queries. You'll input into technical discussions and decision making, as a senior member of a small team where you'll be able to influence best practice and technology choices. Location/WFH: You'll join colleagues More ❯

Now Hiring: Senior Java Developer (Kafka) – 12-Month FTC (rolling with years of work available - up to £120k base 📍 Location: London (On-Site 4 days per week) 📅 Initial 12-month fixed-term contract rolling with years of work available A leading global trading firm is hiring a Senior Java Engineer with strong Kafka expertise to work on … up. The system has already gone live with its first electronic venue and is now scaling fast across multiple markets and asset classes. 🧠 What You’ll Be Working With Java 17 & Spring Boot 3 Apache Kafka for high-volume data streams Vertica & MSSQL Kubernetes (on-prem orchestration) Microservices architecture, containerised environments Agile delivery with strong autonomy and ownership 🎯 Your … to a system designed to run with minimal dev involvement post go-live 🔍 What We’re Looking For Proven commercial experience with Apache Kafka in high-throughput systems Deep Java expertise (Java 17 preferred) Strong understanding of microservices, distributed systems, and containers Background in financial services or trading platforms is a major plus A proactive, delivery-focused engineer More ❯

Lead Java Developer – FX/Trading! 💹💰 Salary: £120,000 - £130,000 + bonus (previously 25-40%) + benefits📍 Location: 3 days onsite, City of London Do you enjoy writing Java code day-to-day as well as line-managing your own team? Do you have a few years of commercial experience as a Software Engineering leader working … Asian FX trading firm and work on cutting-edge trading solutions! This highly respected financial institution is expanding its London office and is on the lookout for a Lead Java Developer to guide one of the teams working on an App in the Cloud product. As the Lead Java Developer, you will:Be a hands-on … leader and write Java code, pair-program with your team and carry out code reviewsLine manage a team of approximately 4-5 Engineers, helping them grow in their careers and developmentContribute and discuss with different stakeholder in the business, notably the Product and Design teamsBe a key player in implementing the best software development methodologies and approaches to your More ❯

with offices in London, Manchester, Newcastle and Glasgow, providing flexi working model (option of remote or hybrid with ad hoc client site travel). They are looking for two Java Full Stack Engineer's (Jnr-Mid level) to join a rapidly growly team, building cutting-edge digital solutions, primarily within Government, Finance, Retail & Energy sectors. Consultant grade level budget … 55k + full benefits + fully remote (plus ad hoc client site travel) Primary requirements: Must be eligible for SC Clearance Extensive experience of building microservices with Java (Spring Boot) (and NodeJS as a bonus) Experience with cloud technologies such AWS or Azure Experience with CI/CD (Gitlab, GitHub, Jenkins) Experience using version control software - Git Experience using More ❯

Senior Java Analyst Developer/Technical Consultant £800 p/d Outside IR35 Quant Capital is urgently looking for a Java Analyst Developer/Technical Consultant to join our high profile client. Our client is a global trading platform software business. Its products are used globally by most asset managers and pension funds. They are well … s) for any gaps in functionality, and undertaking development to deliver functionalities (when required). Technical Consultants/Analyst Developers must have: 8+ years’ full-stack experience as Senior Developer around digital applications, software engineering, microservices and cloud. This could include Core Java, Spring Boot, Hibernate/JPA and UI using React, Ember, JavaScript or HTML. FIX Experience More ❯

Java Developer (Must hold active SC) The Company: At Amber Labs, we are a cutting-edge UK and European technology consultancy that prioritises empowering autonomy, promoting experimentation, and facilitating rapid learning to provide exceptional value to our clients. Our company culture is centred around collaboration, where all colleagues, regardless of their role, work together to minimise risk and … quality tools, deployment tooling You’ll provide technical support for the transition of applications into live service and support. Your skills and experience What you’ll bring: Experience of Java AWS Experience of Spring framework or equivalent. Knowledge of software design patterns and when to apply them Excellent knowledge of development processes. Experience of containerisation using Docker or Kubernetes More ❯

Senior Java Developer/Software Engineer London/WFH to £130k Are you a Java technologist who enjoys building systems from scratch? You could be progressing your career, in a senior, impactful role at a global prime broker that is replacing the legacy infrastructure used across capital markets with a new cloud-native clearing and custody system … designed for today's complex global markets. The company is experiencing great success and is expanding into the UK. As a Senior Java Developer you will take ownership of building a brand new Equity SWAPS platform for the UK, primarily using Java with a focus on backend development but also with some React UI work. You'll … highly talented and collaborative team in the London, City office three days a week with flexibility to work from home the other two. About you: You have strong backend Java development skills including Spring, Spring Boot, microservices You take in pride in producing clean, high quality code You also have an appreciation of UI development with TypeScript/React More ❯

Fimatix are a leading Software Delivery Consultancy and we specialise in supply various departments with HM Government. We are looking to recruit a contract Java/Go Developer for one of our HM Gov programmes. This is an initial 6 month contract and is INSIDE IR35. We are seeking a talented and motivated Java & Go Developer … to help scale and evolve a modern, cloud-native platform built on AWS and Kubernetes (EKS). Key Responsibilities · Design, develop, test, and deploy robust and scalable applications using Java and Go programming languages. · Integrate applications with AWS services, particularly AWS Simple Notification Service (SNS) for messaging and event-driven architectures. · Implement and maintain observability solutions, including logging, monitoring … reviews to ensure code quality and adherence to best practices. · Contribute to the improvement of our development processes and tooling. · Stay up-to-date with the latest advancements in Java, Go, and ForgeRock technologies. · Document technical designs, implementations, and troubleshooting steps. Essential Skills · Strong proficiency in both Java (with experience in frameworks like Spring/Spring Boot) and More ❯

working with Fortune 1000/Global 2000 across 34 countries and 5 continents including North America, South America, Europe, Asia, Australia and Middle East. About the Role:- Job Description Java Infrastructure as a code Mode-Hybrid-3 days from Office Location-London/BurgessHill Mode-FTE or Permanent JD: The role is focused on bringing public cloud to the … Documentation Emphasis on creating comprehensive and highquality documentation Enduser Feedback Valuing and incorporating feedback from endusers to improve solutions Psychological Safety Fostering a safe environment for experimentation and innovation Developer Advocacy Advocating for the needs and interests of developers Automation Strong focus on automating repetitive tasks to increase efficiency Inner and Open Source Contribution Encouraging contributions to both internal … roles You build effective work relationships giving and receiving constructive feedback and your colleagues at all levels and across all teams trust you Technologies We Use Languages Go and Java are our primary languages Frontend Any browser applications are based on React CICD Code lives in GitHub Enterprise and flows to production through a CICD pipeline built on GitHub More ❯

Role: Full-stack Java Developer (VueJS) Location: London city, On-site, Salary: £55-70K Are you a Mid-Level Java Developer who wants to work with a rapidly scaling Tech business who are solving problems using the latest tools in Machine Learning, Data Science and Automation tools? A mid-level Java Developer is … increase efficiency. What makes this company special is a unique culture and how they collaborate to solve problems. Job Description: We are seeking a talented and experienced Full-stack Java Developer to join our team. As a Full-stack Java Developer, you will play a crucial role in designing, developing, and maintaining high-performance applications that … leverage the latest in automation and machine learning. Qualifications: Experience: 3+ years of professional experience as a Fullstack Java Developer. Education: Bachelors degree in Computer Science, Engineering, or a related field, or equivalent experience. Technical Skills: Proficiency in Java and Spring Boot. Experience with frontend technologies such as HTML, CSS, JavaScript, and modern frameworks like React, Angular, or More ❯

Do you have 1 - 3 years commercial experience developing software with Java? Looking to join a company when you can make a real impact? 🚀 Java Software Developer – SaaS Solutions 🚀 💲 Salary – up to £55k + bonus 📍 Location – hybrid working 2 days a week in modern London office We have a fantastic brand-new opportunity for a Java Software Developer to join a fast-growing London-based technology SME that provides digital and SaaS solutions for a number of UK companies and government functions. Their admirable dedication and customer focus has already contributed to significant annual growth and driven long-standing partnerships with the likes of the Ministry of Defense, HM Treasury, and the Departments of … Work & Pensions and International Trade. They are looking for a motivated Java Software Developer with experience with: Java Spring Boot Microservices Containerisation using Docker, Kubernetes Developing cloud-native applications with AWS, GCP, Azure SQL, NoSQL and other tools and scripting skills As a Java Software Developer, you will enjoy fantastic benefits: Bonus Private health insurance More ❯

Senior Java Developer - Remote - up to £95K Halian is currently supporting a multi-national and award-winning organisation who are looking for a talented and experienced Java Developer to join their dynamic team on a permanent basis. This is a great opportunity to create exceptional customer experiences and work on cutting-edge technology! As a Senior … quality solutions. Location: South East/Remote. Salary: up to £95,000 + + competitive benefits, depending on experience. Requirements: Experience building and shipping large scale applications Knowledge of Java AND OR Kotlin A solid understanding of AWS OR GCP Experience with TDD and pain programming. Experience with third-party libraries and APIs. Experience leading engineering decisions in a More ❯

About the Role: CyTAL is a leading cyber security company and is growing the development team for our cutting-edge suite of cyber-security tools. As a Java Developer in our multidisciplinary development team, you will be hands on with Java coding and driving forward the development of our cyber security testing solution. You will be given … testing methods - Promote best practices and innovation within the development team - Work closely with other team members to troubleshoot and resolve technical challenges Essential Experience: - Demonstrable proficiency in developing Java and related technologies - Testing: Test Driven Development, J-Unit, User testing - Use of GIT VCS - Object-oriented design - Creation of detailed design documentation Desirable Experience: - Front-end technologies, Python More ❯

About the Role: We are seeking an experienced and visionary Technical Lead with deep expertise in Java Springboot, microservices architecture, and solution design to lead the backend engineering efforts of our enterprise platforms. You’ll work closely with engineering managers, architects, mobile teams, and product stakeholders to deliver scalable, secure, and maintainable solutions. Job Description: Java Lead engineer … productivity and efficiency. Looking for someone who has clear basic fundamentals. CI/CD - Docker or Kubernetes concepts. Reactive Programming experience. Common Logging experience. Top Skills/Must Have: Java Development (Java 21/Java 17/Java 8). Micro-services Architecture - Spring/Springboot. Cloud - Azure is good to have but any other cloud More ❯

Paragon Alpha are partnered with a well established Financial Services Firm who are hiring a Senior Java Developer to lead the buildout of a greenfield execution platform for their Equities desk in London. You will be central to the planning and development of this new build. Using your capacity to create high-quality trading algorithms for seamless trading. … the desk. You will bring direct experience in Equities Algo trading, being able to efficiently and effectively engage with my client's team of traders - deploying your proficiency in Java for full-stack algo Equities trading. Tech Stack: Java, Kubernetes, SQL This is an opportunity to take on a leading role with a direct impact on their trading. More ❯

Principal Java Developer – Major Financial Institution London/Hybrid | Contract | £700-£800 inside IR35 (gross umbrella rate) We’re working with a major financial institution looking to scale out its engineering function with a Principal Java Developer to lead critical systems work. This is a hands-on Principal role requiring an experienced engineer with a finance … background to come in and stabilise an existing platform. This Java-based stabilisation/rescue project is expected to last at least a year, but the successful candidate will then be involved in the replatforming project. The replatforming project will be C#, and whilst you don't need C# experience to be successful, you should be happy to pick … technical decisions across squads. What they’re looking for: Proven experience supporting large-scale, business-critical systems in the finance industry (all areas of finance considered) Strong background in Java and ideally C# Some front-end exposure in Angular - this is mandatory, but doesn't need to be recent or extensive Comfortable working with legacy systems and large enterprise More ❯

Lead Java Developer/Software Engineer (Java Kafka Spring Boot) London/WFH to £120k Are you a skilled Java Developer with strong Java and real-time messaging experience combined with SC Clearance? You could be progressing your career in a senior, hands-on Lead Java Developer position at a scale-up … technology company with a successful workforce management solution used within the government, defence and other public sector clients. As a Lead Java Developer you will take a lead role in designing and developing secure, event driven, distributed backend systems for real-time operations, resilience and extensibility. You'll collaborate with engineers across the full stack to integrate backend … can work from home most of the time, meeting up with colleagues in the London office once a week. About you: You have significant experience as a backend focussed Java software engineering with leadership responsibilities You have strong Spring Boot, Kafka and event driven microservices experience with high throughput You have leadership, mentoring and coaching skills You have a More ❯

Java Developer – 12-Month FTC | Greenfield Build | London 🚨 We’re partnering with a leading systematic family office on an exciting opportunity for a Senior Java Developer to join their Middle Office Engineering team. The team is embarking on a greenfield digital transformation programme, rebuilding key trading and operational systems from the ground up. 📍 Location: Central London … performant, and scalable system. Expect to build across trading support systems, infrastructure, and execution tools, with strong autonomy and end-to-end ownership. What They’re Looking For Strong Java experience (Java 17 preferred) Kafka – Power User level only (critical requirement) Microservices experience is a nice-to-have Background & Experience Deep, production-grade Kafka experience is non-negotiable … 8+ years of commercial Java development Financial services experience is a plus (swaps, pricing, middle/back office etc.) but not essential You’ll need to be a mature, delivery-oriented IC, capable of working with little oversight Important Notes This is an on-site role (4 days/week) – no remote/hybrid flex beyond the agreed schedule More ❯

Java Developer/Backend Software Engineer/Developer WFH to £100k Are you a skilled Java Developer with low latency trading systems experience? You could be progressing your career at a global market data and trading platform provider for cryptocurrency markets. As a Java Developer you will develop, test and maintain high-quality … low-latency Java applications handling millions of requests per day, collaborating with cross-functional teams to design systems that meet business and regulatory requirements. You'll seek to continuously improve system performance and scalability, implement automated testing, CI/CD pipelines and document system workflows, architecture and design decisions. Location/WFH: You can work from home from anywhere … with some flexibility around start/finish times - please note: you must have the right to work in the UK and be UK based. About you: You have strong Java development experience including concurrency, garbage collection, low level performance optimisation, data structures and memory efficient design patterns You have experience with low latency systems, particularly OMS (Order Management Systems More ❯

Do you have 3-5 years experience and are looking for your next challenge? Have you been developing with Core Java without the use of frameworks? Mid Java Developer – Leading FinTech Location – hybrid in London 3 days a week Salary – up to £90k + 25-50% bonus We are working with our long-term partners on the … hunt for numerous Mid-level Java Developers as they continue to expand various teams. They began their journey as a market-leading FinTech disruptor and after many years at the forefront of their field, have recently been acquired by a prominent capital market. This is an excellent opportunity for someone looking for their 2nd or 3rd job in software … as they are looking for someone with 3-5 years prior experience, with the potential to rapidly progress into a senior position. Experience they are looking for in Mid Java Developers: Core Java Developing software from scratch WITHOUT the use of frameworks e.g. Spring Multithreading TDD, CI/CD, Paired-programming environment Data structures, algorithms, threads Working in More ❯

A leading corporate banking and capital markets organisation is seeking a Java Developer to join their team in London. Company Description: Commerzbank is a leading international commercial bank with branches and offices in almost 50 countries. The world is changing, becoming digital, and so are we. We are leaving the traditional bank behind us and we are choosing … innovation and high quality pricing, execution, hedging and market making, together with the ability to customise solutions to clients’ needs. Job Purpose: The pricing team is looking for a developer with lots of potential and a strong numerate background to help build the next generation Interest Rate pricer. This involves building bespoke pricing platforms that interface with the C++ … quant pricing libraries as well as the distribution of market data to back office systems and internal/external clients. Summary Java development role (Java 21+). The business is ever-changing and demands an agile culture, fast-paced front office environment. The role is responsible for helping to build and support all the technical aspects of the More ❯

Backend Java Developer ?" City London We are urgently looking to recruit a Java backend Developers with at least 5 years experience. Must have strong Data structures and Algorithms experience. Also experience of Spring, working with large code base, SQL, Unix etc. You should ideally have a solid problem solving and algorithm background coupled with excellent communication skills. More ❯