1 to 25 of 46 Permanent Java Engineer Jobs in London

Senior Java Engineer/Developer (AI) London/WFH to £110k Are you a technologist with a strong knowledge of AI and its practical uses within software engineering? You could be progressing your career in a senior, hands-on Senior Java Engineer role at a global … organising events and projects that foster an open, diverse and inclusive culture Plus a range of other perks Your role: As a Senior Java Engineer you'll join an experienced team working on AI innovation within the business. Your primary focus will be on using Claude code ...

Engineer (Java JVM) London/WFH to £110k Are you a Site Reliability Engineer with a strong knowledge of Java and JVM internals? You could be progressing your career in an impactful role at a global CFD trading company that has been consistently voted … employers. As an SRE Engineer you will collaborate with development teams, as a trusted technical advisor to influence system design, ensuring reliability standards and driving improvements across the platform. You'll have a broad scope including hands-on coding (Java) to build tools and automation, incident response, observability ...

Senior Java Engineer London Salary: £70,000 - 80,000 Bonus: TBC This is a hybrid role that requires 3 days a week office attendance About the Company An exciting opportunity has arisen for a Senior Java Engineer to be part of a highly innovative forward thinking … bespoke best-of-breed banking technology, a single platform delivering loan issue, card issue and recovery. We're looking for an exceptional Senior Java Engineer who will work closely with the Java Team Lead & CTO as we scale up and modernise our business processes and tech stack. ...

Java Engineer Salary to £60k + 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 either SC or DV clearance. (SC) 5 years & (DV) 10 years residency … data and deliver citizen services. Theyre growing fast and looking for bright, dynamic people to help build their business. Role Theyre looking for a Java Engineer to join their implementation team. Youll work across Camunda BPMN/DMN process automation, API integration, and microservice orchestration helping their public ...

Java Engineer • Salary to £60k + 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 either SC or DV clearance. (SC) 5 years & (DV) 10 years residency … deliver citizen services. They’re growing fast and looking for bright, dynamic people to help build their business. Role They’re looking for a 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 – 6-Month Contract – Hybrid (2 days on site, London) - Day Rate: Up to £700 (Inside IR35) Join a high-performing engineering team working on large-scale, high-availability systems used by millions. This role offers the chance to build and enhance complex backend services … modern, cloud-native environment. What you’ll be doing: Designing and developing performant, scalable backend systems using Java (up to Java 21). Building microservices with Spring Boot and related frameworks. Developing and maintaining RESTful APIs and event-driven systems. Writing clean, testable code and following TDD principles. ...

Java Engineer - Contract (outside IR35) A Forex Brokerage based in London and are looking for an experienced Java Engineer with strong FIX API (server-side) expertise to join on an initial 3 month contract. This a key role working on high-performance, low-latency trading infrastructure … used in live market environments. What You'll Be Doing Design, develop, and maintain server-side Java applications for FIX connectivity Build and support FIX API integrations with liquidity providers, banks, and trading venues Optimise systems for low latency, high throughput, and reliability Collaborate closely with trading, infrastructure ...

Java Engineer 📍 Location: London (Hybrid) 💷 Compensation: Up to £160,000 + Bonus + Comprehensive Benefits 🔍 The Role Join a leading FinTech as a Java Engineer and help build their next-generation, low-latency trading platform . This is a hands-on role in a high-performance … where every millisecond matters. Collaborate with top-tier engineers and industry experts to tackle complex, mission-critical challenges , delivering robust, scalable solutions using Core Java . 🔧 What You’ll Be Doing 🧩 Develop high-performance systems in Java for real-time trading applications 🔄 Optimize multithreading, concurrency, and throughput ...

Java Engineer Salary to £60k + 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 or DV clearance. (SC) 5 years & (DV) 10 years residency ...

Full Stack Software Engineer Java React Banking London This is a new and exclusive opportunity for a Full Stack Software Engineer who is primarily front office focused with React (75%) and Java (25%) to join this thriving front office derivatives team in this investment bank Role … details Title: Full Stack Software Engineer Technical focus - React (75%) and Java (25%) Employer: front office banking derivatives Permanent role salary £70-85,000 plus bonus and pension Location: London City and home working hybrid 50/50% Technical stack: primarily React focused with a java base ...

Full Stack Software Engineer Java React Banking London This is a new and exclusive opportunity for a Full Stack Software Engineer who is primarily front office focused with React (75%) and Java (25%) to join this thriving front office derivatives team in this investment bank Role … details Title: Full Stack Software Engineer Technical focus - React (75%) and Java (25%) Employer: front office banking derivatives Permanent role salary £70-85,000 plus bonus and pension Location: London City and home working hybrid 50/50% Technical stack: primarily React focused with a java base ...

Java Full Stack Engineer – Consultant/Senior Consultant Salary: £55,000 – £70,748 base plus benefits, perks, and healthcare options! Base Locations: London, Manchester, Newcastle or Glasgow (Hybrid working - operate out of any base!) Organisation: Global IT consultancy Are you a passionate Java Full Stack Engineer … engineering community where you'll work with cutting-edge technologies and deliver meaningful outcomes for clients across the UK. About the Role As a Java Full Stack Engineer, you'll be responsible for designing, building and delivering high-quality digital products that solve complex business challenges. ...

Software Engineer | Java Microservices | London (1 day per week on-site) | £63,000 – £74,000 We're partnering with a leading UK financial services organisation to recruit a Software Engineer with strong Java and microservices experience. This is an excellent opportunity for someone looking to take … meaningful technical challenge within a highly reputable institution undergoing significant digital transformation. The Role As a Software Engineer, you'll join a dedicated feature team responsible for designing, engineering and maintaining high-performance, secure and robust software solutions. You'll work closely with engineers, architects and business analysts across ...

Senior Software Engineer (Java) – Portfolio Optimization | Fintech | London/Hybrid About My Client My client is a high-growth fintech company transforming the way capital markets operate. Their mission is to make global financial systems safer, more efficient, and more open, using advanced technology and deep domain expertise. … intelligent solutions that optimise portfolios, reduce risk, and unlock access to more diversified capital. About the Role My client is seeking a Senior Software Engineer to join their Portfolio Optimization team — a core group responsible for building the technology that drives their balance-sheet and exposure-management platform. This ...

Director - Lead Software Engineer (Java, Equities) Location: London | Division: Investment Banking | Type: Full-time About the Role We are seeking a Director-level Lead Software Engineer to join our Equities Technology team within the Front Office. This is a hands-on, independent contributor role where you will … closely with traders, quants, and other technologists to deliver innovative solutions in a fast-paced environment. Key Responsibilities Lead the design and development of Java-based trading and risk platforms for equities. Deliver low-latency, high-throughput systems for order management and execution. Collaborate with front-office stakeholders ...

Director - Lead Software Engineer (Java, Equities) Location: London | Division: Investment Banking | Type: Full-time About the Role We are seeking a Director-level Lead Software Engineer to join our Equities Technology team within the Front Office. This is a hands-on, independent contributor role where you will … closely with traders, quants, and other technologists to deliver innovative solutions in a fast-paced environment. Key Responsibilities Lead the design and development of Java-based trading and risk platforms for equities. Deliver low-latency, high-throughput systems for order management and execution. Collaborate with front-office stakeholders ...

Lead Software Engineer – Java Microservices | London (1 day per week on-site) | £74,000 – £92,000 + Package We’re partnering with a leading UK bank to recruit a Lead Software Engineer with strong Java and microservices expertise. This is a hands-on role building high … such as e-commerce search functionality, streaming platform logins, or other large-scale consumer-facing systems. What We’re Looking For Proven experience developing Java microservices for high-traffic applications (retail, e-commerce, media, or streaming platforms). Hands-on experience with the full software lifecycle in agile environments ...

Senior Software Engineer/Developer (Java Spring Boot) London/WFH to £85k Are you a Software Engineer looking for an opportunity where you can make an impact? You could be progressing your career in a senior, hands-on role at a growing US based tech company … that provide a platform for gaming and gambling businesses to retain their customer base, as they expand their UK presence. As a Senior Software Engineer you will be instrumental in helping the company to bring all tech inhouse; you'll design and develop new features and enhancements ...

Java & Spark Engineer 12 month contract Hybrid - London (3 days per week in the office) INSIDE IR35 AM Analytics offers a scalable, ML-ready platform for rapid portfolio model development and deployment. It combines data governance, Big Data, and AI—including GenAI capabilities— to boost alpha generation, enhance … Azure-native Databricks. Responsibilities include: migrating and optimizing 500+ jobs using Databricks optimization techniques, managing 12 TB of data, tuning models for Azure with Java Spark and Delta tables, and addressing vulnerabilities through library version updates. Current Tech Stack: Python, Data Science, Gen AI (GPT, Embeddings, Document Intelligence), Java ...

Java Full Stack Engineer looking to work on cutting-edge, high-impact digital solutions? Do you want to use your expertise to help shape major transformation programmes across government and secure environments? If you're driven by innovation, value collaboration, and enjoy solving complex technical challenges … love to hear from you. Java Full Stack Engineer (DV Cleared) Consultant Level - Digital Excellence Salary: £46,330-£55,000 Base Locations: London, Manchester, Newcastle or Glasgow Organisation : Global leading IT Consulting Business (Applicants must hold active DV clearance) Are you a Java Full Stack Engineer ...

Staff Engineer/Backend Developer (Java AWS PostgreSQL) London/WFH to £120k Are you a backend focussed technologist with leadership skills? You could be progressing your career, in a senior, hands-on role at a technology driven market research company that is scaling rapidly, having raised Series … qualifications Private medical care, access to free therapy X2 days per year for volunteering Excellent career development opportunities Your role: As a Staff Engineer you will take a lead role in architecting, developing and scaling the core platform with a focus on backend engineering with Java (there ...

Staff Engineer/Backend Developer (Java AWS PostgreSQL) London/WFH to £120k Are you a backend focussed technologist with leadership skills? You could be progressing your career, in a senior, hands-on role at a technology driven market research company that is scaling rapidly, having raised Series … qualifications Private medical care, access to free therapy X2 days per year for volunteering Excellent career development opportunities Your role: As a Staff Engineer you will take a lead role in architecting, developing and scaling the core platform with a focus on backend engineering with Java (there ...

seeking an experienced Senior Java Software Engineer to join the IT team at a leading bank, supporting the delivery, maintenance, and enhancement of core systems across various business areas, including operations, compliance, transactions, and client management. This is a 6-month contract role offering an excellent day rate … government/public sector organisations. In this role, you will be an integral part of the software development lifecycle, working closely with Senior Java Developers, UI/UX teams, and Agile Transformation to architect, build, and deliver greenfield, brownfield, and integration applications. You will be expected to employ best ...

Senior Java Developer - Java, Springboot & AWS – paying up to £650/day (Inside IR35) – Hybrid (2x a week - London) – 6 month contract Our client is seeking a Senior Java Developer who is passionate about clean code, cloud-native systems, and building technology that makes a real impact. … unique opportunity to work in an agile, high-ownership engineering culture. What You'll Be Doing: Build and scale backend services using Java and Spring Boot Shape a modern microservices architecture for a high-availability platform Deploy and manage services in AWS with Kubernetes (EKS) Design, implement ...

seeking an experienced Backend Engineer to join the IT team at a leading bank, supporting the delivery, maintenance, and enhancement of core systems across various business areas, including operations, compliance, transactions, and client management. This is a 6-month contract role offering an excellent day rate, ideally suited … government/public sector organisations. In this role, you will be an integral part of the software development lifecycle, working closely with Senior Java Developers, UI/UX teams, and Agile Transformation to architect, build, and deliver greenfield, brownfield, and integration applications. You will be expected to employ best ...