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Duetto's core Java/Spring platform processes millions of rate decisions daily across thousands of hotels worldwide — and this role owns its architecture and evolution. What You'll Be DoingYou'll own the architecture and technical roadmap of Duetto's Java/Spring monolith — driving domain decompos

A track record of building scalable data integration systems (beyond simple ETL jobs)Strong proficiency in Java and the JVM ecosystem, including deep knowledge of memory management, garbage collection tuning, and performance profiling. Solid experience with concurrent programming in Java, including

HelloKindred in the United Kingdom is seeking a Lead Fullstack Camunda Developer to design and implement Camunda solutions with strong full‑stack expertise in Java, Spring Boot, React, SQL, and OpenShift.

Your focus includes Scala/Java, async runtimes, meta-modeling, and AI-assisted engineering practices to improve code quality, delivery speed, and resiliency across the firm’s business functions.

We primarily use Jvm based languages (Java/Kotlin) but we also have parts of the platform that use other languages as needed. Lead Software Engineer - Backend Engineering - Java/Kotlin.

Morgan is seeking a Lead Software Engineer to design, build, and deploy scalable cloud-based applications with a focus on Java and AI/ML integrations. This role requires strong Java/Python/Node.

A leading electronic trading firm in the London Area is seeking a Lead Software Engineer to design high-performance trading solutions for front-office teams.You will work closely with exceptional engineers in a fast-paced environment committed to innovation and career progression.The company offers

This is a hands on role where you will design, build, and maintain Java-based backend systems, working with microservices, cloud technologies, and distributed systems. Please note that as part of the interview process you will be expected to carry out basic core java coding and systems design since

You will contribute to the core platform, building scalable services using Java, Spring Boot and cloud technologies within a dynamic Payments & Finance product environment.

JUXT is seeking Senior and Principal Java Developers to work on a high-performance trading and real-time data project for a major financial institution. You will write and tune Java frameworks, optimise throughput and latency, and apply event-driven, microservice-based architectures.

You will design, develop, and test production code in Java or Python, contribute to architecture, and help improve coding hygiene and system design while collaborating across teams.

You will design, develop and deploy Java-based services, REST APIs and React frontends, collaborating with traders and operations to solve real business problems. You will work across Java, Node.

A well-established financial markets firm is seeking a Senior Java Trading Systems Developer to support the continued development of its electronic trading technology. Design, build and maintain trading systems using Java. Strong commercial Java development experience.

Global Banking Markets - Low-Latency Java Software Engineer - Vice President - London location_on London, Greater London, England, United Kingdom. Goldman Sachs Electronic Trading (GSET) - Low-Latency Java Software Engineer - London. Strong Java programming skills, ideally in a real-time low latency

The ideal candidate will have over 5 years of experience in cloud solutions, proficient in JAVA and JVM languages, and familiar with Agile methodologies.

Applied experience in Scala and Java.

Proficiency in Python, Java, and JavaScript/TypeScript.

Experience writing applications using Java;.

You will leverage Java, Python, and React to deliver AI-enabled features and capabilities. Design, develop, test, and maintain full-stack features using Java, Python, React, and AI-enabled services. Proficiency in Java, Python, and React.

Morgan is seeking a Lead Software Engineer within the CIB - Markets Technology group to deliver trusted, market-leading technology products.You will contribute across multiple technical areas, advancing secure, scalable software solutions and responsible AI adoption within an agile team.You will lea

The role requires strong Java expertise, UNIX/Linux experience, and a focus on low-latency, high-volume systems in a fast-paced IT/quant environment.

Lead Java Fullstack Developer – London, UK Overview. Lead Java Fullstack Developer – London, UK. We are looking for a Lead Java Full Stack Developer with significant experience in creating scalable enterprise applications across both frontend and backend technologies.

A growing tech company in the UK is seeking a hands-on Technical Architect with strong Java skills to design and implement scalable AWS solutions.

IBM Consulting UK FutureNow is seeking a Senior Java Developer to design, build, and maintain scalable Java/JEE applications for public and private sector clients. The role requires strong Java/Spring expertise, TDD, CI/CD, and the ability to own technical areas as you gain experience.

State Street is seeking an experienced Java API Developer to join our Digital Asset team in London.

As a Senior Java Developer within the Java Development Guild in CDIO Borders & Trade, you will be responsible for leading the design and development of clean, secure code following a test-driven approach, as well as maintenance and continuous improvement of Java-based services and applications acros

As a Senior Java Developer within the Java Development Guild in CDIO Borders & Trade, you will be responsible for leading the design and development of clean, secure code following a test-driven approach, as well as maintenance and continuous improvement of Java-based services and applications acros

You will join our Software Engineering Practice as a Principal Engineer, specialising in Java, leading technical teams and shaping cutting-edge.

We're looking for Senior and Principal Java Developers with a strong background in low-latency systems to join us on a high-performance trading and real-time data project, for a major financial institution. Your work will focus on writing and tuning high-performance Java frameworks, improving throug

You will contribute to trusted, scalable technology products in a secure, cloud-native environment, applying Scala/Java expertise and AI-assisted practices.

We have an opportunity to impact your career and provide an adventure where you can push the limits of what's possible.As a Lead Software Engineer at JPMorganChase within the ETF Technology team in EMEA, you are an integral part of an agile team that works to enhance, build, and deliver trusted mark

Advanced skills in one or more programming languages such as Java, Python, C/C++, or C#.

Applied experience in Scala and Java.

A leading technology firm in Greater London is seeking an experienced Enterprise Architect (Java J2EE) for a contract role in the BFSI domain. Ideal candidates will have over 20 years in software architecture, proven expertise in Java/J2EE, and deep understanding of cloud services and DevSecOps prac

You have a strong software engineering background with Java. Engineering Manager (Java AI) opportunity. Engineering Manager (Java AI) London / WFH to £140k.

Significant extensive hands‑on coding experience in core Java, specializing in low‑latency, high‑throughput distributed applications. Basic proficiency in Linux system performance tuning and monitoring, with the ability to troubleshoot performance issues within the Java/Linux stack.

JPMorganChase in London seeks a Lead Software Engineer for the ETF Technology team.You will join an agile group delivering trusted market-leading technology products in a secure, scalable way, supporting UCITS ETF business with assets under management around £5 billion.You will collaborate with pla

Basic proficiency in Linux system performance tuning and monitoring, with the ability to troubleshoot performance issues within the Java/Linux stack. Significant extensive hands-on coding experience in core Java, specializing in low-latency, high-throughput distributed applications.

A technology consultancy firm in Greater London is seeking a Principal Engineer specializing in Java.

The role involves designing, building, and maintaining Java-based backend systems, with a focus on cloud-native and microservices architectures. The ideal candidate has hands-on experience with Java, cloud technologies, and mentoring skills. A leading financial institution in London is seeking a Sen

Basic proficiency in Linux system performance tuning and monitoring, with the ability to troubleshoot performance issues within the Java/Linux stack. Significant extensive hands-on coding experience in core Java, specializing in low-latency, high-throughput distributed applications.

Join us to shape the future of payments technology and make a real impact on your career.As part of our agile team, you’ll help build trusted solutions that power global transactions.You’ll have the opportunity to grow your skills, collaborate with talented colleagues, and contribute to a cultur

You will lead a platform built on React and Java (Spring Boot), drive best practices, CI/CD, testing, security and performance, and mentor engineers as the team grows through 2026 and beyond.

Java Lead eSoftware Engineer - Equities Algo Trading - VP. Formal training or certification on software engineering concepts and proficient advanced experience in Java.

You will design and deliver low-latency Java code powering the Bullish Exchange, working across a hybrid architecture that blends a Central Limit Order Book with proprietary market making.

Morgan is seeking a Lead Software Engineer to drive architecture, coding, and delivery across the full software lifecycle.You will spend ~70% on deep technical execution and ~30% on leadership, mentoring, and setting direction, with ownership from design to production support.The role emphasizes pra

London seeks a Lead Software Engineer for the Equity Derivatives Group.You will join an agile team delivering high-quality software using modern tech and industry best practices, collaborating with a global technologists network to build and support market-leading products.Responsibilities include d

Evolving low‑latency Java patterns (lock‑free, low‑GC, CPU/cache optimisation). Strong experience in low‑latency Java within trading, eFX or electronic markets. FX Software Engineer (Ultra‑Low Latency Java).