51 to 75 of 586 Java Engineer Jobs in the UK

Software Engineer - High-Performance Java/Low Latency Role Type: Contract (Inside IR35) Location: London, UK (Hybrid - 3 days per week in-office) Overview We are looking for a specialist High-Performance Java Engineer to join our team in London, focusing on the expansion of Agency … concurrent systems for agency liquidity expansion. Perform fine-grained JVM tuning, garbage collection (GC) optimization, and memory profiling to achieve ultra-low response times. Engineer low-level Java solutions utilizing JNI, Java Unsafe, or JNR-FFI for high-frequency processing. Collaborate across cross-functional engineering and risk ...

Lead Software Engineer - Java/Python LONDON, LONDON, United Kingdom Job Description Be an integral part of an agile team that's constantly pushing the envelope to enhance, build, and deliver top-notch technology products. As a Lead Software Engineer at JPMorganChase within Digital Markets Execution Technology … continuous improvement aligned to measurable outcomes Required qualifications, capabilities, and skills Formal training or certification on software engineering concepts and advanced applied experience in Java/Python Hands‐on practical experience delivering system design, application development, testing, and operational stability for mission‐critical platforms Advanced in one or more ...

Hiring: Lead Data Engineer (Java) Locations: Newcastle, Glasgow, Manchester, or London Clearance: Active SC Clearance is highly preferred (SC eligible candidates will be considered) Contract Duration: 13+ months Are you an expert Data Engineer with strong Java programming skills? Join our AI & Data team to design ...

Senior Full-Stack Software Engineer (Java & React/Javascript/Angular) Would you like to help create products to support the sharing of scientific knowledge? Do you enjoy collaborating to solve complex technical problems? About the team: Our dynamic Agile Teams deliver the technology which facilitates researchers … publish quality scientific research. As a Software Engineer, you will build capabilities to improve the quality of scientific research. About the role: As a Senior II Software Engineer, you will build capabilities to support scientific researchers through the process of submitting the research for publication. We are continually ...

Project description As a Senior Full Stack Java Engineer within the US Corporate Loans POD, you will design, develop, and deliver enterprise integration solutions connecting Loan IQ with upstream and downstream platforms. You will leverage modern cloud-native technologies, AI-assisted development tools, and Agentic AI practices … optimize application and integration performance. SKILLS Must have Core Engineering 8+ years of software engineering experience, ideally within Financial Services. Strong expertise in Java, Spring Boot, REST APIs, and distributed systems. Experience with Kafka, IBM MQ, or similar messaging technologies. Strong integration experience with Loan IQ, lending, banking ...

Senior Software Engineer Java React AWS/Azure Hybrid Permanent I'm currently working with a leading UK technology and software consultancy that is looking to add an experienced Senior Software Engineer to one of their Central Government delivery teams. This is an excellent opportunity … Full Stack Engineer who enjoys solving complex technical problems, working with modern technologies, an click apply for full job details ...

Senior Software Engineer Java React AWS/Azure Hybrid Permanent I'm currently working with a leading UK technology and software consultancy that is looking to add an experienced Senior Software Engineer to one of their Central Government delivery teams. This is an excellent opportunity … Full Stack Engineer who enjoys solving complex technical problems, working with modern technologies, an click apply for full job details ...

Select how often (in days) to receive an alert: Senior Software Engineer (Java, Spring Boot) Contract Type: Full time, Permanent Location: Manchester, Hybrid (2 days onsite) Our Team: How We Enrich Everyday Life You’ll be joining Bauer Media Audio (BMA), Europe’s biggest commercial audio broadcaster, connecting … cross-squad roles – people whose expertise and support spans the whole team. Each squad will be led by a Product Manager and Lead Engineer, working in partnership and jointly accountable for their squad's work and outcomes. Squads are intentionally small – typically around five to six engineers – keeping them ...

Backend Software Engineer (Java) | Payments/Financial services We are partnering with a leading technology-driven organisation operating within the Financial Services, FinTech and Payments sector to hire several experienced Senior Backend Software Engineers . This is an opportunity to join a high-performing engineering team responsible … backend expertise remains the highest priority , we are also keen to hear from engineers with full-stack experience . Candidates with a combination of: Java backend development; and React.js frontend development will be considered, particularly where they have strong backend credentials and experience delivering end-to-end solutions. What ...

Senior Software Engineer, Full Stack, Java Belfast, Northern Ireland, United Kingdom Join TRG Screen: Building World-Class Teams. One Expert at a Time. Are you ready to be part of a dynamic team at the forefront of subscription spend management innovation? At TRG Screen, we're not just … Screen is a portfolio company of Vista Equity Partners, one of the world’s largest and most respected private equity firms. Position: Senior Software Engineer, Full Stack Location: Belfast The Role We are seeking a Senior Full Stack Software Engineer (Java) to join TRG Screen’s engineering ...

Senior Low Latency Java Engineer - Equities Electronic- Execution (eTrading) Engineer the future of global finance. At Citi, our Tech teamdoesn’tjust support finance – we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+ countriesoperatingat a scale … including Algorithmic Trading, Smart Order Routing (SOR), Dark Pool & Internalization engines, Low latency Client & Exchange Connectivity, and high-throughput market data processing. The senior engineer will collaborate with a cross-functional team of developers and work closely with product development, quantitative research, technology infrastructure, production support and QA teams. ...

101350289744Posted: 2026-09-30Location: Belfast, Northern Ireland, United KingdomCategory: Technology, Applications Development, ProfessionalCompany: CitiSenior Low Latency Java Engineer - Equities Electronic- Execution (eTrading) Engineer the future of global finance. At Citi, our Tech team doesn't just support finance – we are helping to redefine it. Every … together to define and deliver the next generation of Equities technology at Citi. Role OverviewCiti's Equities Technology organization is seeking a Senior Software Engineer to join the Equities Electronic- Execution (Electronic Trading) technology team. The person in this role will be responsible for the design, development, and delivery ...

Senior Java/Python Engineer London | Up to £775/day (Inside IR35) or £120,000 Base Salary 5 Days Onsite for the First 6 Months | 4 Days Thereafter This investments clientis investing heavily in a strategic platform build-out driven by T+1 settlement requirements and continued business … batch-driven processes towards a modern, event-driven platform, giving engineers the opportunity to have genuine influence over architecture and design decisions. Technology Stack Java Python Spring Boot Kafka Linux PostgreSQL AWS Microservices REST APIs What We're Looking For Capital Markets Technology Regulatory Reporting Finance Systems Trade Lifecycle ...

Senior Software Engineer - (Java/AI) Brokerage Services IG Group is a FTSE 100 fintech operating across five continents, serving over 1.4m customers and handling billions of dollars in transactions – built on scale, trust, and proof. We didn't pivot to innovation; it's how we've always … platform to define what comes next. Join us at IG – the future gets built here. Your team We’re looking for a Senior Engineer to join our Brokerage Services team to push hard on AI across Brokerage Services engineering: AI-assisted coding, testing and deployments, shift left on security ...

Description Senior Software Engineer | Java | React | AWS/Azure Hybrid | Permanent \n I'm currently working with a leading UK technology and software consultancy that is looking to add an experienced Senior Software Engineer to one of their Central Government delivery teams. \n This is an excellent … opportunity for a Full Stack Engineer who enjoys solving complex technical problems, working with modern technologies, an... \n \n \n \n \n \n \n \n \n \n \n ZIPC1_UKTJ ...

Description Senior Software Engineer | Java | React | AWS/Azure Hybrid | Permanent \n I'm currently working with a leading UK technology and software consultancy that is looking to add an experienced Senior Software Engineer to one of their Central Government delivery teams. \n This is an excellent … opportunity for a Full Stack Engineer who enjoys solving complex technical problems, working with modern technologies, an... \n \n \n \n \n \n \n \n \n \n \n ZIPC1_UKTJ ...

Citigroup Inc. is seeking a Senior Software Engineer (Java or Python) to help shape next‐gen financial software. You will engage in full‐stack development, leverage Spring Boot/Core and Flask/FastAPI, and build cloud‐native solutions with modern JS frameworks. You will also explore ...

Senior Full Stack Engineer – Java/Angular Location: UK – Fully Remote Salary: Up to £85,000 Type: Permanent I'm looking for an experienced Senior Full Stack Engineer to join a growing product-focused technology organisation, working on high-scale applications within a modern AWS cloud environment … management title — someone who can set the standard, make sound technical decisions and bring others with them. Key Skills & Experience Strong commercial experience with Java development Strong TypeScript experience Excellent Angular development experience Strong understanding of REST APIs and distributed systems Significant experience working with AWS Experience developing within ...

Backend Software Engineer/Developer (Java) Newcastle onsite to £120k Do you have expertise with backend Java development within finance/trading environments? You could be progressing your career in a senior, hands-on Java Developer role at a scaling FinTech. As a Backend Software Engineer you'll play a key role in a new client engagement to transform a highly complex C++ legacy trading system into a modern Java based application. You'll collaborate with Front Office trading teams as well as other highly skilled software engineers and product teams to deliver robust ...

Citi is seeking a senior Low Latency Java Engineer to drive Java-based, low-latency systems for algorithmic trading. You will develop event-sourced microservices, influence architecture decisions, and collaborate with cross-functional teams in a high-performance London environment. You will mentor junior engineers while shaping ...

Java Software Engineer – Bristol We urgently require a strong Java developer with very good experience working in an agile environment with some experience with Micro Services for a contract assignment in Bristol. Must have at least 5 years’ experience as a software engineer in Java Development. Should be experienced in a true agile environment, collaborative development environment. With strong Java software developer - hands on keyboard with strong communications skills to mentor and coach less experienced developers on the client side. Experience with micro services Experience with native cloud platforms This ...

Place to Work-CertifiedTM company and has won Best Workplaces UK multiple years in a row. We're looking for an experienced Senior Fullstack Engineer who is passionate about building scalable, high-quality software and helping teams grow. This is more than a hands-on engineering role … delivering software that makes a real business impact. What You'll Do Design, build and maintain scalable, secure and resilient backend systems using modern Java and the Spring ecosystem, alongside rich, responsive frontends built with React. Lead technical design and architectural discussions, ensuring solutions are maintainable, performant and aligned ...

Place to Work-CertifiedTM company and has won Best Workplaces UK multiple years in a row. We're looking for an experienced Senior Fullstack Engineer who is passionate about building scalable, high-quality software and helping teams grow. This is more than a hands-on engineering role … delivering software that makes a real business impact. What You'll Do Design, build and maintain scalable, secure and resilient backend systems using modern Java and the Spring ecosystem, alongside rich, responsive frontends built with React. Lead technical design and architectural discussions, ensuring solutions are maintainable, performant and aligned ...

Place to Work-CertifiedTM company and has won Best Workplaces UK multiple years in a row. We're looking for an experienced Senior Fullstack Engineer who is passionate about building scalable, high-quality software and helping teams grow. This is more than a hands-on engineering role … delivering software that makes a real business impact. What You'll Do Design, build and maintain scalable, secure and resilient backend systems using modern Java and the Spring ecosystem, alongside rich, responsive frontends built with React. Lead technical design and architectural discussions, ensuring solutions are maintainable, performant and aligned ...

Place to Work-CertifiedTM company and has won Best Workplaces UK multiple years in a row. We're looking for an experienced Senior Fullstack Engineer who is passionate about building scalable, high-quality software and helping teams grow. This is more than a hands-on engineering role … delivering software that makes a real business impact. What You'll Do Design, build and maintain scalable, secure and resilient backend systems using modern Java and the Spring ecosystem, alongside rich, responsive frontends built with React. Lead technical design and architectural discussions, ensuring solutions are maintainable, performant and aligned ...