76 to 100 of 130 Senior Java Developer Jobs in London

Free-Work UK. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more. Base pay range Senior Full Stack Developer/Software Engineer (Java JavaScript React) London to £80k Well established trading brokerage is seeking a Senior Full … Stack Developer as they expand into UK markets. As a Senior Full Stack Developer, you'll join a small technology team building Greenfield trading systems from scratch, working in a start-up environment with backing from the larger organisation. You'll take ownership, working across the full … and will quickly see the impact of your work, developing high quality, scalable and secure trading applications, working across the full tech stack from Java on the backend through to JavaScript/TypeScript, React and React Native front end work. Location/WFH: You'll join a team of More ❯

by showcasing their talents, skills, and unique experience in an inclusive environment that helps them thrive. A fantastic new opportunity has become available for Senior Java Swing Developer with one of our Financial Services clients based in Bromley. Role : Senior Java Swing Developer Location … technology team, helping to analyze, design, build and deploy multi-tier, high availability systems globally deployed systems. Experience and Skills required : Solid knowledge of Java and all aspects of GUI development using Swing including but not limited to threading, performance optimization, building UI widgets, etc. Experienced within FX and … stored procedures, applying referential integrity & performance tuning. Strong analytical skills with a desire to learn and deliver. Financial Background essential. Responsibilities: Development is primarily Java based, with peripheral technologies including TIBCO Rendezvous (RV), Sybase, UNIX shell scripting, and middleware based on IBM MQ Series. Repertoire should include knowledge of More ❯

coach less experienced specialists and provide information affecting long term profits, organisational risks and strategic decisions.. Advise key stakeholders, including functional leadership teams and senior management on functional and cross functional areas of impact and alignment. Manage and mitigate risks through assessment, in support of the control and governance … will also be expected to demonstrate the Barclays Mindset - to Empower, Challenge and Drive - the operating manual for how we behave. Join us a Senior Etrading Java Developer at a VP level and be involved in the development of our new strategic platform - Asgard. To be successful … as a Senior Etrading Java Developer within this team, you should have: Electronic Trading and financial experience Experience developing and optimizing highly scalable, high performance and low latency systems written in Java Ability to lead design decisions, be a self-starter and work independently Some other More ❯

Senior Java Developer - (Job Number: 00054708361) Pay Competitive Location London/England Employment type Full-Time Job Description Req#: 2058093 !*! Job Summary We're looking for a Backend engineer with JAVA AWS skills who will take a key role on our team. Our developer must … systems Experience working with relational and non-relational databases Maintain code integrity and organization. Understanding and implementation of security and data protection Essential Skills: Java 11 and above, Spring Framework, MVC, JDBC, JPA, Docker, Kubernetes, Cloud API's. Java EE architecture, with a focus on Spring Framework, JPA More ❯

Senior Java Developer - Glasgow - Investment Banking - Data/Spring/Linux/SQL/SDLC/Equity Primary responsibilities: The developer will work within an agile squad developing within a system comprising of numerous Java services that interact via messaging to produce the product outputs … in Real Time. Technologies and techniques such as highly multi-threaded Java, Sharded Mongo DB and caching are used in the stack to provide the scale and performance that the product requires. Skills: - Core Server Side Java including Data Structures and Concurrency - Spring, Junit - Linux - Relational Databases (Sybase … desire to use agile software development practices Skills Desired: - JMS, MQ, Kafka - MongoDB - Knowledge of a range of common Open Source libraries used in Java development - Database performance tuning (relational and document) - Python/Shell Scripting - Financial domain knowledge (eg Equities) Glasgow based - hybrid - Inside IR35 By applying to More ❯

apply if your qualifications and experience are a good fit for any of our openings. Your role: Joining the Connectors product line as a Senior Java Developer, you would work as a member of a small, highly focused team, responsible for delivering backend services for highly scalable … Migrate existing services to microservices, with the goal of reducing complexity at the design and architecture level Write unit and integration tests for your Java code Collaborate with testers in development of functional test cases Develop deployment systems for Java-based systems Collaborate with product owners on user … operation of production systems Participate in knowledge sharing activities with colleagues Pair programming and peer reviews About you: Required Experience: Minimum 8 years of Java development experience in an Agile environment, building scalable applications and services Experience with RESTful services Passion for Test Driven Development CI/CD Attributes More ❯

Senior Java Developer - FX Technology London (AVP) About Citi As the world's most global bank, Citi gives you the tools to be a trailblazer. We're not just building technology; we're building the future of banking. With thousands of employees located around the globe, we … the financial sector. We welcome applications from any industry and should you wish to apply your application will be reviewed for a multitude of Developer positions at varying levels. About FX Tech Citi FX has a physical presence in 83 countries with 1,400 dedicated staff giving us the … Single Dealer Platform What we are looking for: A real interest in/passion for coding Extensive experience in hands-on software development using Java and related frameworks Highly credible hands-on engineer, confident to dive into a code-base and deliver substantive features and change Ability to work More ❯

Senior Java Developer - FX Technology London (VP) About Citi As the world's most global bank, Citi gives you the tools to be a trailblazer. We're not just building technology; we're building the future of banking. With thousands of employees located around the globe, we … the financial sector. We welcome applications from any industry and should you wish to apply your application will be reviewed for a multitude of Developer positions at varying levels. About FX Tech Citi FX has a physical presence in 83 countries with 1,400 dedicated staff giving us the … Single Dealer Platform What we are looking for: A real interest in/passion for coding Extensive experience in hands-on software development using Java and related frameworks Highly credible hands-on engineer, confident to dive into a code-base and deliver substantive features and change Ability to work More ❯

Social network you want to login/join with: Senior Java Developer - Low Latency, london col-narrow-left Client: Oliver Bernard Location: london, United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right Job Views: 5 Posted: 05.05.2025 Expiry Date: 19.06.2025 col-wide Job … Description: Java Developers - Low Latency Experts - Contract - Outside IR35 Looking to speak with Java/Low latency engineers to work on a large scale financial services project in London. This is a multi-year project and looking for latency specialists to come in and help build it out. … Skills needed - Core Java, Performance Tuning, Concurrency, Threading, HFT. 2-3 days in London No sponsorship offered, please do not apply if you need it. #J-18808-Ljbffr More ❯

Social network you want to login/join with: Senior Java Developer - Equity High Touch Trading, London Client: 06500 Citigroup Global Markets Limited Location: London, United Kingdom Job Category: Other EU work permit required: Yes Job Reference: c8e94f843ef8 Job Views: 4 Posted: 02.06.2025 Expiry Date: 17.07.2025 Job … limit management, entitlements, and trading frameworks. Develop standards for coding, testing, debugging, and implementation. Mentor mid-level developers and analysts. Qualifications: Extensive server-side Java development experience, knowledge of middleware and databases. Proficiency in Core Java, multi-threading, collections, and garbage collection in low latency systems. Strong understanding More ❯

Senior Java Developer (VP) – London – Equities Sales and Trading Overview Citi is a world-leading global bank. We have approximately 200 million customer accounts and a presence in more than 160 countries and jurisdictions worldwide. We provide consumers, corporations, governments, and institutions with a broad range of … second line support, including out of hours, for the processes and components you develop. Key Skills and Experience required Primary development expertise in core Java development, including knowledge of collections, IO, multi-threading and generic You will be a highly motivated self-starter who is comfortable taking on new … will have experience working with build tools such as Gradle and Maven. You will be comfortable working with Linux and be familiar with standard developer tooling, such as Git, BitBucket/GitHub, Jira, Confluence, etc. Prior experience developing front office Trading applications/Systems Bonus points for Experience or More ❯

services client on modernising their trading platform using React, Microservices, AWS technical stack while maintaining the current trading platform. Hence the need for a senior Java developer who has worked on applications that are built using AWS SaaS/PaaS platforms following Microservices architecture. This is an … opportunity for an enthusiastic software engineer to join the development team as a senior developer. S/he will be responsible for a spectrum of assignments from working on new products, system and product enhancements, and systems architecture to bug fixes. We are seeking skilled technologists who have strong … client’s trading platform. Initiatives include product enhancements and new workflows for trading, and server-side programming and messaging. Perform the above duties utilizing Java, AWS, PostgreSQL, Spring Boot, Gradle, Redis. Improve the scale and performance of the growing system. Coordinate with business analysts and quality assurance daily. Present More ❯

Java Developer Spring Boot/Node.js/JS Digital Consultancy Permanent Role Remote working with some travel Salary £55k-£70k + Bonus Were looking for Developed Vetting-cleared Full Stack Java Engineers to join a globally recognised Digital Consultancy at a pivotal moment in their technology evolution. … this level of clearance will not be considered. Key Responsibilities : Work on impactful, high-security projects requiring DV clearance. Develop and enhance microservices using Java Spring Boot and Node.js. Contribute to the companys exploration of AI technologies with opportunities to work with AI languages and tools. Collaborate in a … Experience : DV Clearance This is a must. Only candidates with Developed Vetting clearance can be considered for this role. Proven experience building microservices with Java Spring Boot. Experience with Node.js is a bonus. Strong background in front-end development with some experience in JavaScript/TypeScript, ideally including React More ❯

I am currently working with a London-based investment bank who are actively seeking a Senior Java Developer to join a long-term platform modernization project. What you'll need to succeed Extensive hands-on Java Development experience with a focus on data migration and transformation More ❯

About Us At Citi, we are committed to improving developer productivity across the organization. Our team focuses on building innovative DevSecOps solutions that empower developers to deliver secure and high-quality software efficiently. We contribute to open-source projects, particularly around the CycloneDX SBOM standard, and leverage cutting-edge … technologies to create impactful tools and integrations. Key Responsibilities: Design, develop, and maintain APIs and microservices using Java 21, Java 8, Project Reactor, and Spring WebFlux. Build and enhance SCA plugins for Gradle, Maven, and npm to identify vulnerabilities. Develop integrations with tools such as GitHub, SonarQube, TeamCity … Collaborate with cross-functional teams to implement DevSecOps practices, including SCA, SAST, shift-left, and secure SDLC. Required Skills and Experience: Strong proficiency in Java (Java 21 and Java 8). Experience with reactive programming (Project Reactor, Spring WebFlux). Solid understanding of DevOps and DevSecOps principles More ❯

Senior Technical Java and C# .net Software Developer We are currently recruiting a Java with C# .net Senior Software Developer – who can be the lead in the team. You must have at least 5 to 7 years proven track record of developing software with … Java and C# .net framework coupled with SQL Server. Ability to own and drive forward Omni channel technical solutions and technical architecture from an IT perspective (with direction from Head of IM, Consumer & Brands) o Ownership of FM Digital Technical architecture including the ongoing review of overall FM Omni … focus. · Provide governance for troubleshooting complex system issues as necessary · Develop or contribute to business cases, roadmaps and proposals which may include presentations to senior management. · Collaboration with Business, Technical, and Security Architects, to manage risk identification and risk mitigation tactics associated with the designs. Role-specific knowledge: · 5+ More ❯

Join to apply for the Senior Java Backend Developer role at MrQ Mr Who? We're an award-winning online casino launched in 2018. We're big on tech, big on performance, and most of all, big on fun. Over the years, we have experienced explosive growth … which means we need more rock stars to join our quest for total world domination. We are looking for an awesome Senior Backend Developer to join our growing team, with an office based in the UK, Malta, or Gibraltar, or a remote option. What You Will Do Develop … collaboration skills that demonstrates critical thinking and problem-solving abilities, and able to manage their time. 5+ years of in-depth practical experience with Java and Spring. Knowledge of other JVM-based languages, especially Kotlin is a plus. Solid understanding of web application architecture and microservices. Familiarity with the More ❯

liquidity. What We do/The Team The FX Data Analytics & AI Technology team, within Citi's FX Technology organization, seeks a highly motivated Senior Java Data Engineer. The FX Data Analytics & Gen AI Technology team provides data, analytics, and tools to Citi FX sales and trading globally … attitude, ability to build consensus, and work both collaboratively and independently in a dynamic environment. Role Overview/What will you do: As a Senior Java Engineer, your mission is to help shape our team of innovators and technologists toward creating next-level solutions that improve the way … to-know (NTK), and data governance. Contribute to shaping and executing the overall data strategy for FX in collaboration with the existing team and senior stakeholders. Closely work with FX desks in understanding the requirements and translating into simple and efficient design. Close interaction with Traders and Quants to 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 … experience in Equities trading, being able to efficiently and effectively go face to face with professionals on the trading floor. Deploying your proficiency in Java for full-stack trading system development. Tech Stack: Java, Kubernetes, SQL This is an opportunity to take on a leading role on my 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 … experience in Equities trading, being able to efficiently and effectively go face to face with professionals on the trading floor. Deploying your proficiency in Java for full-stack trading system development. Tech Stack: Java, Kubernetes, SQL This is an opportunity to take on a leading role on my 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 … experience in Equities trading, being able to efficiently and effectively go face to face with professionals on the trading floor. Deploying your proficiency in Java for full-stack trading system development. Tech Stack: Java, Kubernetes, SQL This is an opportunity to take on a leading role on my 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 … experience in Equities trading, being able to efficiently and effectively go face to face with professionals on the trading floor. Deploying your proficiency in Java for full-stack trading system development. Tech Stack: Java, Kubernetes, SQL This is an opportunity to take on a leading role on my More ❯

organiser of Source Talks: On Kotlin 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 role within a high-performing team modernising legacy platforms, improving availability, and … design, and steering collaborative technical decisions across squads. What they’re looking for: Proven experience supporting large-scale, business-critical systems Strong background in Java and ideally C# Some front end exposure (Angular ideally but other frameworks considered). Note the role is back end focused. Comfortable working with … design including HATEOAS implementation Angular, React or frontend exposure Familiarity with Snowflake or backend SQL variants This is a great opportunity for an experienced Java Developer to join a prestigious financial player. If you’re someone who thrives in complex environments and enjoys technical leadership alongside delivery, apply More ❯

of home and office, subject to operational requirements. As part of the Global Equities Front Office technology team, an opportunity exists for an experienced developer to work on a real-time trade processing and client allocation platform. The platform is primarily built in Java and incorporates low-latency … memory database technologies. The role involves a mix of technical support tasks, including diagnosing production issues, applying bug fixes, and extending the platform using Java and a proprietary workflow/reporting framework. There are also opportunities to collaborate globally to enhance the core framework and develop new features. Candidates … complex equities trading workflows and familiarity with Fidessa ETP and/or CTAC is desirable. Key Responsibilities & Tasks: Develop new workflows using a proprietary Java-based framework Develop new reports using the same framework Collaborate with the global development team to enhance the platform Implement permanent fixes for development More ❯

Senior Fullstack Software Developer Our Client is a relatively young company but growing quickly in the world of financial technology solutions. They are now looking to recruit a Senior Fullstack Software Developer with at least 5 plus years expertise. The ideal candidate will have great problem … to plan new features. Research and suggest new mobile products, applications and protocol. Qualifications/Experience: Highly proficient in React, Swift or Objective C, Java for mobile development; Rails, nodejs and Angular for web development. 5 to 7 years of extensive native mobile app (iOS & Android) and web app More ❯