Lead Software Engineer Python Java Jobs in London, UK

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UK Site Lead, Software Engineering — Director

GRAIL is seeking a Director of Software Engineering – UK Site Lead to spearhead their software engineering organization. Based in London, you will ensure the execution of critical business priorities and alignment with global strategies. Key responsibilities include driving multi-year roadmaps for key initiative ...

UK Site Lead, Software Engineering — Director

GRAIL is seeking a Director of Software Engineering – UK Site Lead to spearhead their software engineering organization. Based in London, you will ensure the execution of critical business priorities and alignment with global strategies. Key responsibilities include driving multi-year roadmaps for key initiative ...

Java Back End Developer

Role: Backend Developer (Core Java) We are seeking an experienced Backend Developer with strong expertise in Core Java to build scalable, high-performance APIs and work effectively within large, complex codebases. The ideal candidate will have a solid foundation in system a ...

Java Developer – Apache Struts

About Us: Founded on the grounds of innovation – iXceed Solutions is an ISO certified, leader in Talent and Digital recruitment solutions, serving Fortune 100 companies globally. If you are considering sending an application, make sure to hit the apply button below after re ...

Java Back End Developer

Role: Backend Developer (Core Java) Please ensure you read the below overview and requirements for this employment opportunity completely.We are seeking an experienced Backend Developer with strong expertise in Core Java to build scalable, high-performance APIs and work ...

Full Stack Java Developer

Job TitleJava DeveloperDay Rate£500/day - Inside IR35LocationRemote - Occasional LondonDuration6 months (with view to extend)ROLE DESCRIPTIONBrio Digital are supporting a consultancy on a major NHS digital programme and are looking for an ex ...

Senior AI Engineer

Senior AI Engineer: Xcede have started working with a frontier AI lab who help large organisations design, build, and deploy real-world Generative AI systems. They work with very well-known brands and generate multi‑million‑pound revenues! < ...

Machine Learning Engineer, Personalization

Machine Learning Engineer, Personalization Join the Personalization team to build and scale machine learning systems that power recommendations for millions of users. You will work on the intersection of research and production, developing reward signals, A/B testing mid‑term signals, and optimizi ...

Machine Learning Engineer, Personalization

Machine Learning Engineer, Personalization Join the Personalization team to build and scale machine learning systems that power recommendations for millions of users. You will work on the intersection of research and production, developing reward signals, A/B testing mid‑term signals, and optimizi ...

Senior Software Engineer Big Data Metrics (Scala/Spark)

A leading information and analytics firm seeks a Senior Software Engineer in Greater London to design scalable systems for metric computation. This position involves building pipelines with Scala and Spark, developing Java APIs, and mentoring junior engineers. Candidates should demonstrate strong expertise in bi ...

Senior Software Engineer Public APIs & Expense Platform

A global technology firm in Greater London is seeking a Senior Software Engineer to enhance their Business Expense Management team. You'll design and maintain scalable services while producing public-facing APIs. Ideal candidates will be proficient in Java, familiar with microservices, and possess strong communi ...

Senior JVM Live Debugger Engineer | AI Driven Production

A leading developer tools company is seeking a Senior Software Engineer in Greater London. This role focuses on enterprise JVM experience and exciting engineering challenges involving AI integration. Responsibilities include designing product features and developing tooling for AI-first workflows. The ideal cand ...

IAM Full Stack Engineer: Secure Platform & Access Leader

A leading financial technology firm is seeking a Software Engineer to join their IAM team. In this role, you will design and implement secure, scalable solutions for user access management, employing cutting-edge technology in a supportive environment. Ideal candidates will have experience in full stack engineer ...

Senior Backend Engineer Enterprise Payments & Banks

A global technology company is seeking a Senior Software Engineer I for the Wise for Banks team in Greater London. The role involves designing and implementing scalable services using Java and Spring Boot within a microservices architecture. Candidates should have strong experience in Kafka, PostgreSQL, and even ...

Senior Algo Trading Engineer Low Latency & SOR (AVP)

Citibank (Switzerland) AG is seeking a Senior Software Engineer for Algo Trading in London. The role involves designing and delivering algorithmic trading and Smart Order Routing (SOR) platforms, requiring strong technical expertise in Low Latency Java, C++, or Rust. Collaboration with traders and quantitative r ...

Senior Backend Engineer – Time & Money (Hybrid, Equity)

Personio seeks a Senior Software Engineer in London to build backend systems for time tracking and payroll functionalities. The role includes designing services to ensure accurate data integration into Payroll and Money systems. Ideal candidates have backend engineering experience, strong programming skills in J ...

Senior Cloud Native Full Stack Engineer (Azure, React/Java)

Charles River Development, based in Greater London, is seeking a full-stack, cloud-native engineer to enhance their Enhanced OTC Module. You will work with Java, C#, SQL, and modern JavaScript frameworks while mentoring junior engineers. A degree in a related field is required, along with 8-10 years of software ...

Software Engineer — Embedded Fintech Platform + RSU

A leading fintech company in Greater London is seeking a Software Engineer to build multi-tenant infrastructures and solutions for enterprise clients like Rippling and SHEIN. The role requires over 3 years of experience in Java/Spring Boot and involves collaboration across Product, Design, Compliance, and Sales ...

Backend Java SDE II — Scale APIs, Hybrid Work

Tesco Technology in Greater London is seeking a Software Development Engineer II to enhance our backend API systems. You'll design and develop high-performance APIs to improve customer experience. With a knowledge of Java, you'll work closely with senior engineers, participate in team planning, and learn modern ...

Software Engineer Analytics & Data Pipelines

Apple is looking for a Software Engineer in London to join the Analytics and Data Engineering team. You will develop large-scale systems to power Apple’s services like the App Store and Apple Music. The ideal candidate should have experience with distributed systems and proficiency in Java or Scala, or equivalen ...

Cloud Native Full Stack Engineer: AWS & Kubernetes

ESPIRE INFOLABS (SINGAPORE) PTE. LTD. is seeking a skilled Full Stack Engineer to join their Cloud Center of Excellence team in the United Kingdom. The role involves building and maintaining applications on AWS with strong proficiency in Java, Spring Boot, and modern DevOps practices. Candidates should have exte ...

Back End Engineer, Fraud in London Blockchain.com

Fault Tolerant, Production Ready Distributed Backend Systems You have experience in any JVM based languages (such as Java, Kotlin, Scala) and are confident in your ability to build, debug, and ship microservices. You are customer-focused and continuously suggest how the... <h ...

Senior Solution Engineer Demos, PoCs & Strategy

A technology solutions provider in Greater London seeks a passionate Solution Engineer to support regional targets by presenting innovative solutions to potential customers. The ideal candidate has a degree in Computer Sciences or Business Informatics and at least two years of experience in software technologies ...

Software Engineer, AI Driven Finance & Asset Analytics

Clearwater Analytics is seeking an experienced Software Engineer in Greater London to develop solutions for fund analytics within an AI-based team. The role emphasizes programming in Java and collaboration with investment professionals. Candidates should have strong problem-solving skills and experience in Agile ...

Android Platform Engineer: Quality, Performance & Tooling

Deepstreamtech is seeking an experienced Software Engineer specializing in Android development in Greater London. The role involves developing tooling to measure quality issues, working across the stack, and optimizing performance through Android profiling. Ideal candidates should have expertise in Java/Kotlin a ...

Senior Java SRE: Scale Low Latency Trading Systems

IG India is seeking a Senior Java Engineer specializing in Site Reliability Engineering (SRE) to enhance system reliability across its trading platform. The successful candidate will blend software development and reliability engineering, collaborating with cross-functional teams and leading initiatives such as ...

Senior JVM Live Debugger Engineer | AI Driven Production

A leading developer tools company is seeking a Senior Software Engineer in Greater London. This role focuses on enterprise JVM experience and exciting engineering challenges involving AI integration. Responsibilities include designing product features and developing tooling for AI-first workflows. The ideal cand ...

Senior Backend Engineer – Time & Money (Hybrid, Equity)

Personio seeks a Senior Software Engineer in London to build backend systems for time tracking and payroll functionalities. The role includes designing services to ensure accurate data integration into Payroll and Money systems. Ideal candidates have backend engineering experience, strong programming skills in J ...

Senior Software Engineer Big Data Metrics (Scala/Spark)

A leading information and analytics firm seeks a Senior Software Engineer in Greater London to design scalable systems for metric computation. This position involves building pipelines with Scala and Spark, developing Java APIs, and mentoring junior engineers. Candidates should demonstrate strong expertise in bi ...

Senior Backend Engineer Enterprise Payments & Banks

A global technology company is seeking a Senior Software Engineer I for the Wise for Banks team in Greater London. The role involves designing and implementing scalable services using Java and Spring Boot within a microservices architecture. Candidates should have strong experience in Kafka, PostgreSQL, and even ...

IAM Full Stack Engineer: Secure Platform & Access Leader

A leading financial technology firm is seeking a Software Engineer to join their IAM team. In this role, you will design and implement secure, scalable solutions for user access management, employing cutting-edge technology in a supportive environment. Ideal candidates will have experience in full stack engineer ...

Senior Software Engineer Public APIs & Expense Platform

A global technology firm in Greater London is seeking a Senior Software Engineer to enhance their Business Expense Management team. You'll design and maintain scalable services while producing public-facing APIs. Ideal candidates will be proficient in Java, familiar with microservices, and possess strong communi ...

Senior Software Engineer (Associate) Full Stack React/AWS

Java Script Works is seeking a Senior Software Engineer (Associate) to work in London, United Kingdom. This full-time position offers competitive compensation and opportunities to work with modern technologies such as C#, .NET core, and React.js. Ideal candidates will possess strong technical abilities ...

Staff AI Systems Engineer — Remote GTM Context & Insights

HubSpot is hiring a Staff Software Engineer to enhance AI products within the Engage Product Group. This role requires solid experience in building AI solutions, and strong programming fundamentals, primarily in Java. Key responsibilities include writing production code, collaborating with product management and ...

Distributed Backend Engineer (JVM Microservices)

Fault Tolerant, Production Ready Distributed Backend Systems You have experience in any JVM based languages (such as Java, Kotlin, Scala) and are confident in your ability to build, debug, and ship microservices. You are customer-focused and continuously suggest how the... <h ...

Python Web Engineer Fintech in London Quant Capital

Job Opening: Python Web Engineer Our client is a major global financial exchange, driven by technology. They are at the bleeding edge of not only product ideas but also experience. The role requires experience with Python-based MVC web frameworks, as well as front‑end web technologies such ...

Engineering Manager — 6 Month Contract (London Onsite)

A leading software engineering firm is seeking a Software Engineering Manager to lead a high-performing team in London. You will mentor engineers, oversee project delivery, and ensure quality standards while promoting a DevOps culture. The ideal candidate has extensive experience in software engineering, team ma ...

Engineering Manager: Lead Scalable Web & Cloud Teams

Marks and Spencer is looking for a Software Engineering Manager in London to lead a passionate team of developers in creating and maintaining high-quality software solutions. You will be responsible for overseeing project delivery, establishing quality standards, and providing technical leadership. Candidates sh ...

Engineering Manager: Lead Scalable Web & Cloud Teams

Marks and Spencer is looking for a Software Engineering Manager in London to lead a passionate team of developers in creating and maintaining high-quality software solutions. You will be responsible for overseeing project delivery, establishing quality standards, and providing technical leadership. Candidates sh ...

Lead AI DevOps Engineer

Lead AI‑Enabled DevOps EngineerTechnical leadership at the intersection of software, platforms, and AIWe're seeking a Lead AI‑Enabled DevOps Engineer to join a growing engineering capability and play a central role in shaping how AI is embedded into real, productio ...

Senior Product Engineer (Python/React) Tech for good

Senior Product Engineer (Python/React) - Tech for good Salary: Up to £85k Location: 1-2 days p/week in London (some flexibility) Senior Product Engineer (Python/React) - would you like the opportunity to work for a tech for good organisation operating in the restoration space? They’re cur ...

Software Engineers

Position Description: CGI was recognised in the Sunday Times Best Places to Work List and has been named one of the ‘World’s Best Employers’ by Forbes magazine. We offer a competitive salary, excellent pension, private healthcare, plus a share scheme (3.5% + 3.5% matching) which makes you ...

Principal Consultant JAVA Developer

About the job Principal Consultant - JAVA Developer Principal Consultant - JAVA Developer Location: London, England, United Kingdom Office space available at location listed Hybrid - Compulsory 2 days onsite. Industry: Information Technology <p ...

Java Developers (all levels)

Java Developer – Backend As a Java Developer , you will play a pivotal role in designing and developing scalable, resilient back-end systems using the latest Java and microservices technologies. You will collaborate with skilled professionals who take ownership of their work, share ideas f ...

Full Stack Java Developer

We are looking for an experienced Full-Stack Developer to design, develop, and maintain scalable web and mobile applications. The role involves building modern user interfaces using React or React Native, developing robust backend services using Java, and ensuring seamless integration between front‑end and ...

Java Spring Boot Developer

The Role The Backend Engineer will contribute to the design, development, and deployment of cloud‑native backend services using Java, Spring Boot, and Microsoft Azure. The role focuses on building and supporting microservices and event‑driven systems that enable scalable, resilient, and high‑perf ...

Backend Java Developer Freelance

Senior Backend Java Developer – London We are looking for a Senior Backend Java Developer to join the transformation of a strategic digital product enabling connectivity with external sales channels such as marketplaces, social commerce and quick‑commerce platforms. The role focuses on con ...

Front Office Java Developer

We are seeking a Java Developer with strong Front Office Foreign Exchange (FX) technology experience to join a major strategic modernisation programme. The programme is focused on migrating a large-scale, business-critical FX trading platform from a legacy C++ architecture to a modern Java-based platform. ...

eFX Java Algo Developer

Location: LondonCompany: TalanType: (Full-time) About Talan Talan is a global consulting group specialising in business and IT transformation, with a strong presence in financial markets, digital innovation, and data-driven technologies. We partner with lea ...

Lending Java Developer London

Who We Are: Galaxy is a global leader in digital assets and data center infrastructure, delivering solutions that accelerate progress in finance and artificial intelligence. We believe that blockchain and digital asset innovation will transform how value moves through the world – and we’re buildi ...

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    Lead Software Engineer Python Java Jobs in London Job Search Guide, Trends and Insights