1 to 25 of 42 Permanent Java Engineer Jobs in London

Principal Java Engineer (AWS/Microservices) Salary: Up to £100,000 + Bonus + Benefits Location: Coventry or Central London - Hybrid (2 days per week onsite) Working Hours: 40 hours per week - Full time Job Type: Permanent A globally established organisation is seeking an experienced Principal Java Engineer to shape the future of large-scale digital platforms used by millions of customers. This role will focus on driving engineering excellence, defining technical standards and leading the design of scalable, high-availability systems across a modern cloud-native environment. Responsibilities for the Principal Java Engineer ...

Senior Java Software Engineer - Java Developer, Python, AWS, MySQL, NoSql, REST APIs, Microservices, Machine Learning, Artificial intelligence (Hybrid - 3 days a week in the office - Notting Hill) Description for the Senior Java Software Engineer role:- You will be joining a fast-growing, research-driven company … machine learning techniques. My client is revolutionising their industry with a track record of building things that others have ruled out as impossible. The Java Software engineer will join a very bright, talented team of engineers with the guidance of technologists who have help build up some ...

Description Senior Backend Java Engineer Rate: £500 - £575 a day pay inside Location: Remote, with expectations to attend onsite meetings when required (1-2 a month) Duration: 6 months+ We are looking for a hands-on Senior Backend Java Engineer with recent experience building, testing … whose recent experience is mainly support, coordination, architecture-only, or line management. Essential skills and experience Strong hands-on commercial coding experience with modern Java (Java v17 min, v21 LTS or newer preferred) Strong experience with Spring Boot Experience building REST APIs/microservices from scratch Strong testing ...

Description Java Engineer - Payments/IFT London - 2 days in the office 6 Months Contract Inside IR35 £500 a day A top tier consultancy firm is looking for an experienced Java Engineer with a background in payments to contribute to a large payment modernisation programme. … compliance with ISO 20022 standards. Essential Skills 5 + years of hands on experience in a Java11 and spring boot 5 + Years in Java Engineering. Proven track record delivering large-scale systems for major banking clients. Minimum of 3 years' hands-on experience specifically with ICON IPF (Instant ...

This is not a bank. Not a consultancy. Not sell‐side tech. We’re hiring a Java Engineer to join a small, elite engineering team inside a buyside FX trading firm building proprietary systems that directly trade capital. Your code won’t feed dashboards or client portals … fluff. This is backend + infrastructure engineering in a production trading environment. Who This Is For We’re looking for a junior–mid level Java engineer who can: Pick up tickets independently Write clean, production‐ready code Deliver without constant oversight This is not a senior or architectural ...

Principle Java Engineer • Salary to £70k + Company Options Scheme • Hybrid working between your home, their offices (London Vauxhall) & client sites. NB: Please only apply if you are a UK National and able to achieve SC (ideally DV) clearance i.e. you have at least 5 years residency … growing fast and looking for bright, dynamic people to help build their business. Role They’re looking for an experienced (Principle/Team Lead) Java Engineer to join their implementation team. You’ll work across Camunda BPMN/DMN process automation, API integration, and microservice orchestration — helping their ...

Java Engineer Salary to £ 45 k + Company Options Scheme Hybrid working between your home, their offices (London Vauxhall) & client sites. NB: Please only apply if you are a British National/UK Passport holder able & prepared to achieve SC (ideally DV/eDV) clearance. You must have … data and deliver citizen services. Theyre growing fast and looking for bright, dynamic people to help build their business. Role Theyre looking for aJava Engineer to join their implementation team. Youll work across Camunda BPMN/DMN process automation, API integration, and microservice orchestration helping their public-sector clients ...

Latency Java Engineer London | Hybrid Electronic Trading/Distributed Systems/FinTech A leading global trading technology business is looking to hire a Low Latency Java Engineer to join a high-performing Core Trading team building the systems at the heart of a large-scale electronic … Work closely with engineers and stakeholders to deliver trading functionality at scale • Contribute to architecture, performance engineering, and continuous improvement initiatives Requirements: • Strong core Java engineering background • Experience building distributed, low-latency, or high-throughput systems • Strong understanding of concurrency, system design, and backend architecture • Experience with performance testing ...

Title: Lead Modernization Engineer Java/Node.js Salary: Paying up to £80,000 per annum Location: Wembley London - 5 days on-site Our client, a well-established and diversified multinational organisation, is seeking a Lead Modernization Engineer Java/Node.js to join their team. Skills Solid … Experience in Java development with significant, demonstrable experience in Spring Boot and Microservices architecture - not just familiarity, but production ownership. Azure Integration: Proven experience building applications that consume Azure-native services, including Azure Key Vault for secrets, Azure Storage API, and Azure Service Bus for event-driven messaging. DevOps ...

trusted partner for some of the industry’s leading companies, our global talent has helped many clients achieve their goals. Principal Java Engineer We are seeking an experienced and opinionated Principal Java Engineer to join our high-performing engineering team, working on low latency, high-throughput … offers the opportunity to build scalable, real-time services using modern technologies.If you’re passionate about performance, have strong Core Java and SpringBoot expertise, and thrive in a collaborative yet opinionated engineering culture, we want to hear from you. Key Responsibilities: Design, develop, and optimize low-latency, high-throughput ...

Senior Java Engineer – Low Latency Trading London/New York (Hybrid) Skills: Java, Java 23, Low Latency, Trading Platforms, Market Data, Aeron, Kafka, Chronicle, FIX Artemis Talent is partnering with a leading trading technology firm building high-performance, real-time trading systems used across global markets. … sensitive infrastructure across order management, execution, and market data where performance and reliability are critical. The Role Design and build low-latency, high-throughput Java systems Optimise performance across latency, concurrency, and memory Contribute to mission-critical trading platforms (OMS/EMS, market data) Work closely with engineering ...

exciting opportunity for a Java Software Engineer has arisen with a leading semiconductor company specialising in high-performance mixed-signal processing, based in London. This is an exciting opportunity for a Java Software Engineer to design and evolve cross-platform applications, SDKs, and developer tooling. … will commit to a hybrid working model, with a minimum of one day per week onsite in the London office. Experience for the Java Software Engineer includes: 1+ years of experience with desktop application development, ideally with Java UI frameworks e.g. JavaFx, Swing, Qt Object-oriented design ...

Principal Software Engineer/Developer (Java SpringBoot AWS) London/WFH to £120k Are you an experienced Java focussed Software Engineer, with technical project leadership and client facing skills? You could be progressing your career at a global technology consultancy. As a Principal Software Engineer … sites), you'll join a friendly, diverse, upbeat team. About you : You have experience within a financial services or Fintech environment You have strong Java development skills including multi-threading and concurrency You have experience with SpringBoot and microservices environments You have a good knowledge of REST APIs ...

Contract Senior Software Engineer (Java or Python) | Inside IR35 Contract length: 6 months (with potential to extend) Location: London Working Environment: On-site You will be joining a private equity firm as a senior software engineer, to work across the following responsibilities: Develop and support … production-grade code Provide production support, working with Platform and SRE teams as needed Key Requirements: Technical: 8+ years commercial experience in Python or Java across the full development lifecycle 5+ years in financial services (buy-side strongly preferred) Solid relational database skills; MS SQL Server a strong plus ...

global automotive systems industry leader is seeking a Principal AI Software Engineer (Java) to work remotely on AI projects. This role requires deep expertise in Java, Spring, and AWS, with hands-on experience in production-grade AI systems. Responsibilities include implementing AI solutions and creating deployable ...

client - a global automotive systems industry leader - is looking to hire an Principal AI Software Engineer (Java) to join them on an initial 6-month contract, with a view to transition to permanent employment. This role will be operating as part of a high-functioning team focused … Code, Copilot). This role is remote-working (with some occasional visits to site), and will be operating inside IR35. Requirements Deep expertise with Java/Spring/AWS Hands on production grade experience - or leastPoC forLLM's They will be creating agents and creating code that ...

Backend Software Engineer/Developer (Java Kotlin AWS API) Hybrid WFH to £120k Would you like to progress your career in an impactful hands-on Backend Software Engineer role working on Tech for Good? You could be joining a HealthTech Start-up, founded by two highly successful … using complex technology to improve access to patient records, enabling collaboration between healthcare providers and improving nursing and medical care. As a Backend Software Engineer you will collaborate with the CTO on the overall design and architecture of the products' tech stack, working on Greenfield applications. The tech stack ...

Senior Software Engineer - London Harrington Starr are working alongside a unique financial trading technology firm who are seeking 10+ Senior Java Developers to join their Core Development team and build out low latency systems. You absolutely have to have is a demonstrable interest in technology, precision, and technical … successful candidate will have strong appreciation of Linux, common design patterns, and be a practitioner of TDD. For the role of the Senior Java Engineer you will need the following skills: Strong knowledge of Core Java development, ideally in a low latency/real time environment Strong ...

Senior Java/AWS Engineer - Regulatory Reporting (Financial Services) London (Hybrid) | Permanent We're hiring a Server-Side Java/AWS Engineer to join a global investment management firm's regulatory reporting team. This is a great opportunity to work on business-critical systems that support … transaction reporting across EMEA/APAC. What you'll do: Build scalable microservices using Java (Spring Boot) on AWS Develop RESTful APIs and cloud-native solutions Work on regulatory reporting platforms with real business impact Collaborate closely with product and business teams Tech stack: Java (17+), Spring Boot ...

Must Have – Java, Low-latency, financial services background, and hands on coding skills "Our app relies heavily on async development, we use vertex. it takes significant time to switch perspective. And to lead he need to already have significant intuition with that, and some modern messaging like Aeron … rounds of discussions including one face to face at canary wharf client office. DETAILED RESPONSIBILITIES- - Lead the development, testing, and maintenance of low-latency Java applications. - Collaborate with cross-functional teams to gather requirements and design system architecture. - Optimize application performance and troubleshoot latency issues. - Mentor junior developers ...

passionate and committed individuals who want to kickstart a career in technology! You must be willing to complete full-time training in our Java Automation Engineer programme and will then be assigned to work in a junior role with one of our trusted client partners as a 'Spartan … will be reviewed accordingly, aligning to availability and requirements ensuring we can match the right candidates to the right roles. We are seeking Junior Java Automation Test Engineer, Technical Consultants to join our team: Automation Testing is at the core of defining, developing and testing products for businesses ...

Level: 9 UK Wide We are looking for a Senior Software Engineer who will be responsible for designing, developing, and deploying high-quality software solutions. You will work on complex software projects, contributing to the architecture, development, and improvement of software systems. This role involves mentoring junior engineers, collaborating … Professional knowledge and experience Essential Proven experience in full-stack software development, including design, development, testing, and deployment. Significant hands on experience with Java, Spring Boot and Microservices. Strong understanding of Agile and DevOps practices, with a focus on continuous integration and delivery. Some proficiency in one or more ...

Senior Java Developer London/Hybrid Capital Markets Technology A growing capital markets technology business is looking to hire a Senior Java Developer to play a key role in building and evolving a cloud-native post-trade platform used across client reporting, APIs, workflow management, and trading operations. … Engineering teams to design and deliver scalable backend systems supporting post-trade workflows, reporting, integrations, and client-facing tooling. The environment combines modern Java engineering with capital markets domain exposure, including clearing, OTC derivatives, collateral, and prime brokerage workflows. Responsibilities Design, develop, and maintain backend systems, APIs, reporting platforms ...

Role: Senior (+)/Staff Engineer Salary: £110-£130K + 20-35% Bonus + Shares Remote/Hybrid: 3 days in London office Industry: FinTech What does the client do? FinTech/Series E funded - Unicorn Status. Size/shape of team? Circa 300 headcount in total. Close alignment … between Product and Engineering. This team is a new pillar adding to two existing pillars. Front-end and Back-end differentiated. The Stack? Java/Spring Boot/AWS/K8s/Terraform. Interesting levels of through-put. Front-end is React-TS, React Native but less important than ...

Description Java Developer - multiple roles £510/day Inside IR-35 6 month contract Active SC required Remote with occasional travel to London for client meetings only - expensable We are looking for experienced fullstack Java Software Engineers to support projects across UK Government and Law Enforcement. … hands-on and focused on building high quality software using modern engineering practices. What you'll do You'll design, build and maintain Java based microservices, applying test driven development and following established engineering standards. You'll work with technologies including Java, Spring Boot, Postgres, Kafka, Docker, React ...