1 to 25 of 28 Permanent Java Developer Jobs in London

Senior Java Developer with microservices architecture experience is sought on a fully remote basis by a market leading financial services organisation with a technical hubs across the UK. Working at the forefront of AI driven financial technology this Senior java Developer will play an integral role … microservices architecture to deliver robust, highly scalable solutions used by millions daily. With a real commitment to employee wellbeing and personal development this Senior Java Developer can expect long term commitment to remote, flexible working and a clearing defined progression path with 4 promotion opportunities a year alongside ...

global platform for the LGBTQ+ business community. Please do not contact the recruiter directly. Accepting applications until: 31 July 2026 Job Description Your Role: Java Developer - Digital Out of Home Are you a Java Developer looking to be part of a team building cutting-edge, event … driven systems that power millions of digital advertising moments every day? As a Java Developer within our Digital Out of Home (DOOH) team, you'll help develop the programmatic advertising platform that powers all digital assets across Global's outdoor estate - from large roadside signs to the Transport ...

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. … Java Developer at 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 ...

largest global platform for the LGBTQ+ business community. Please do not contact the recruiter directly. Accepting applications until: 31 July 2026 Job Description Java Developer Reporting of the Role This role reports to Senior Java Developer Overview We are in search of a backend engineer with … direct and programmatic campaign lifecycle management, from booking to fulfilment, tracking and reporting. You'll work within a talented agile team working with modern Java micro-services (Java 21, Spring Boot), deployed on Kubernetes (EKS on AWS), with CI/CD pipelines using Jenkins and Terraform, and observability ...

Location: London (Hybrid) Type: Permanent Rate/Salary: Competitive Role Overview A leading financial organisation is seeking a Backend Java Developer to design and build robust backend services and applications within a high-availability, performance-critical environment. Youll work on modern Java services and microservices, delivering reliable … based in London, with an expectation to attend the office three days per week. Key Responsibilities Design, develop and maintain backend services using modern Java (Java 17+), following secure coding and clean architecture principles. Build and evolve microservices and RESTful APIs to support scalable and resilient platform capabilities. ...

Java/Kafka Developer Location: Fully Remote (UK Based) Rate: £525/day (Umbrella/Inside IR35) - NON-NEGOTIABLE Contract Length: 6 Months (with strong view to extend) Clearance: Active SC Clearance (Mandatory/Essential) The Role: An exceptional contract opportunity has arisen for a Senior Java Developer with deep Apache Kafka experience to join a major Central Government Department. You will work autonomously under general direction, taking responsibility for designing, coding, and implementing complex, high-throughput event-driven microservices. This is a fully remote engagement offering brilliant project longevity, allowing you to drive engineering ...

Tier Investment bank requires an experienced hands-on Java developer and technical architect with deep expertise in real-time third-party payments, high-throughput zero-downtime systems, and highly available, global-scale internet-facing APIs. This role is central to scaling the TFX technology platform for major retail … maintaining software solutions that support business needs. What You'll Do In The Role Act as a senior individual contributor who combines hands-on Java development with architectural leadership, remaining close to implementation and setting the technical standard through design, code-level guidance, and practical problem solving. Design, build ...

global platform for the LGBTQ+ business community. Please do not contact the recruiter directly. Accepting applications until: 31 July 2026 Job Description Your Role: Java Developer Keeping our audiences entertained with their favourite podcasts, radio shows, video content and playlists, the Consumer Growth team builds best-in-class … platforms, we're always looking for new ways to make our content look and sound great. We're looking for an adaptable, experienced Java Developer to help shape the future of Consumer Growth here at Global. . Key Responsibilities Feature Development (5 0 %) : Develop new features that ...

platform for the LGBTQ+ business community. Please do not contact the recruiter directly. Accepting applications until: 31 July 2026 Job Description Your Role: Junior Java Developer - DAX Exchange Are you an early-career engineer who wants to build high-performance systems that power digital advertising at scale … Junior Java Developer - DAX Exchange at Global, you'll join a small, focused team building performance-critical services in modern Java. You'll work on the matching engine that connects advertisers with outdoor screens and, over time, live radio and on-demand audio. You'll contribute to production ...

Java Quantitative Developer London – Hybrid Java, Low Latency, Algo Trading, Pricing, Hedging, FX/Crypto, DeFi, AWS The company This is an unmissable opportunity for an experienced Java Quantitative Developer to join the crypto trading desk of one of the leading institutional digital asset firms … markets. Build pricing logic and hedging frameworks that drive the desk's market making activity. Translate trader and quant ideas into efficient, production-grade Java code. Optimise existing trading systems for speed, reliability and scalability. Integrate new data sources and ensure data integrity for accurate model input. Monitor ...

Role: Front Office Java Developer Client: Elite Investment Institution Compensation: Up to £130k Base Salary + Bonus + Package Location: London (Hybrid) Overview This firm is an elite investment institution that uphold extremely high tech standards. They are made up of exceptionally talented individuals who are passionate about … Role They will align you with the best team suited to your skillset and interests. You will be working with the latest versions of Java (ideally up to version 21), directly with traders and quants to build high performance pricing and analytics tools from scratch. This is a greenfield ...

# Sr. Java DeveloperDeveloperLondonAugust 20, 202588400 - 98700/monthFull TimeApplication ends: **May 12, 2026**Apply Now### Job DescriptionA Sr. Java Developer is responsible for designing, developing, and maintaining high-quality Java applications. They collaborate with cross-functional teams to deliver scalable and efficient solutions, troubleshoot complex … capabilities, and staying updated with emerging technologies are essential for driving innovation and ensuring seamless application performance.### Key Responsibilities* Design, develop, and implement complex Java-based software solutions effectively.* Collaborate with team members to define project requirements accurately.* Optimize application performance for scalability, security, and efficiency consistently.* Troubleshoot ...

Java/Kafka Developer Location: Fully Remote (UK Based) Rate: £525/day (Umbrella/Inside IR35) - NON-NEGOTIABLE Contract Length: 6 Months (with strong view to extend) Clearance: Active SC Clearance (Mandatory/Essential) The Role: An exceptional contract opportunity has arisen for a Senior Java Developer with deep Apache Kafka experience to join a major Central Government Department click apply for full job details ...

Hopeghospital in Greater London is seeking a Senior Java Developer to design and maintain high-quality Java applications. The role involves collaborating with cross-functional teams to deliver scalable solutions, optimizing performance, and mentoring junior developers. Candidates must have strong proficiency in Java, Spring, Hibernate ...

Core Java Developer - Low Latency Trading Technology Location: United Kingdom (Remote) We're working with a high-performance financial technology business whose software sits directly in the execution path of real-time electronic trading. This is not a Spring Boot microservices environment. This is an opportunity … particularly interested in engineers who have built systems from the ground up and who understand what happens underneath the frameworks. Key Requirements: * Strong Core Java* Multi-threading, concurrency and locking* Memory management and garbage collection optimisation* Low-latency system design* FIX Protocol* Trading technology experience* Smart Order Routing, market ...

html Java Python Developer – Equity derivs Hedge Fund £200,000 Job Description Quant Capital is urgently looking for a Java Python Developer to join our high profile client in their main development team. Our client is one of the largest Quant Investment managers globally, with around... … technology and the possibility of making serious money doing something you are passionate about. My client is based in London. Skills Needed Java, C++, Erlang, F#, Scala , Haskell, Django, Python, Twisted, NoSQL, Data Science... ``` #J-18808-Ljbffr ...

Java Software Engineer Join a tier-one global financial institution undergoing a major digital transformation across its capital markets technology estate. You'll play a key role in scaling a mission-critical platform, driving architecture, performance optimisation, automation, and engineering best practice. Strong Java and distributed systems experience ...

Hunter Bond is seeking a Front Office Java Developer to join an elite investment institution in London. You will build high-performance pricing and analytics tools, collaborating directly with traders and quants in a greenfield role. The position offers a competitive compensation package of up to £130k base ...

product capability and looking for talented individuals to help build transformational capital markets products including: Aeron - our flagship high-performance messaging infrastructure. Hydra - our developer framework for accelerating the development and delivery of trading systems. Artio - our market-leading open-source FIX engine. YOU ARE: A great team player … 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 ...

Location: London (Hybrid) Type: Permanent Rate/Salary: Competitive Role Overview A leading financial organisation is seeking a Backend Java Developer to design and build robust backend services and applications within a high-availability, performance-critical environment. Youll work on modern Java services and microservices, delivering reliable ...

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 … customers by delivering inbound 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 ...

Location London, Hybrid Role Type 12 Month Contract Rate £700 - £800 per day Delta Capita is seeking a highly skilled Senior eTrading Developer to join our clients Global Markets Technology practice. This role will focus on developing and enhancing low‐latency components within an electronic trading (eTrading) and eRisk … technical designs aligned with broader architectural standards. Work effectively alongside external and internal technical teams as required. Develop high‐quality, low‐latency server‐side Java components using industry‐standard patterns. Apply continuous integration practices and automated testing (unit, integration). Conduct comprehensive testing prior to release into UAT. Assist ...

Location London, Hybrid Role Type 12 Month Contract Rate £800 - £900 per day Delta Capita is seeking a highly skilled Senior Rates Developer to join our Global Markets Technology practice. This role sits within a specialist team responsible for delivering pricing, eTrading and eRisk capabilities across Rates … channels. Integrate quantitative models and new market data feeds into the pricing platform. Produce detailed technical designs aligned to solution architecture. Implement high‐quality Java server‐side components, applying industry‐standard development patterns. Build simulation and back‐testing environments; investigate regression issues where required. Conduct automated unit, integration ...

Online Trading Platform FinTech Client are looking for experienced Senior Java Engineers to join a new team to modernise and simplify critical legacy services using the latest AI Tools and Internally Built LLMs.The client can offer up to £120,000 Basic + Bonus (c25-35k) + PensionThis role … done COMPLETELY REMOTELY from the UKWe are looking for: Experienced Java Back-End Software Engineers Multi-threading (GC, Memory, Performance Tuning) ideally in a trading environment Some experience with Service Modernisation, working in a modern API First and Cloud Native Experience, any experience using AI Tools is preferred ...

Online Trading Platform FinTech Client are looking for experienced Senior Java Engineers to join a new team to modernise and simplify critical legacy services using the latest AI Tools and Internally Built LLMs. The client can offer up to £120,000 Basic + Bonus (c25-35k) + Pension This … role can be done COMPLETELY REMOTELY from the UK We are looking for: Experienced Java Back-End Software Engineers M click apply for full job details ...