126 to 150 of 159 Senior Software Engineer Jobs in London

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. This ...

Senior Java Developer – London (Hybrid: 2 Days Onsite) We’re partnering with a leading global organisation that is scaling its engineering function and looking for a Senior Java Developer to join their London team. If you’re passionate about building data-driven platforms, enjoy solving complex challenges ...

Senior Java Developer – London (Hybrid: 2 Days Onsite) We’re partnering with a leading global organisation that is scaling its engineering function and looking for a Senior Java Developer to join their London team. If you’re passionate about building data-driven platforms, enjoy solving complex challenges ...

Title: Forward Deployed Engineer – AI & Customer-Facing Technical Leader Location: Remote Travel: Customer visits 4–5 days/month; occasional team gatherings Salary: Senior: €130–150k base + growth trajectory Principal: €160–200k base + package discussion Tech: Python, JavaScript, Azure, AWS, AI, LLM's, RAG Industry … Consultancy The Role We're looking for talented engineers to join our customer-facing AI practice, from Senior Forward Deployed Engineers through to Principal-level AI technical leaders. You'll work directly with clients to uncover problems, build prototypes, and guide full AI-enabled solution lifecycles. This ...

Title: Forward Deployed Engineer – AI & Customer-Facing Technical Leader Location: Remote Travel: Customer visits 4–5 days/month; occasional team gatherings Salary: Senior: €130–150k base + growth trajectory Principal: €160–200k base + package discussion Tech: Python, JavaScript, Azure, AWS, AI, LLM's, RAG Industry … Consultancy The Role We're looking for talented engineers to join our customer-facing AI practice, from Senior Forward Deployed Engineers through to Principal-level AI technical leaders. You'll work directly with clients to uncover problems, build prototypes, and guide full AI-enabled solution lifecycles. This ...

Role: Senior, Staff & Principal Engineers Salary range: 90 - 160k (+ equity) Senior: 90-115k | Staff: 120-135k | Principal: 140-160k Location: Central London (x3 days per week onsite - Tue/Wed/Thurs) Tech stack includes: Typescript, React, Material UI, NodeJS, Postgres, AWS (Serverless) Current ...

C# skilled Software Engineer/Quant Developer, you'll work closely with portfolio managers, researchers, and data scientists to build and maintain the systems that drive our alpha-generating strategies. You’ll contribute to every part of the investment pipeline—from research tooling and data infrastructure to real … Ensure robustness and scalability in both real-time and batch environments What We’re Looking For: Strong programming experience with C# Solid understanding of software engineering principles, design patterns, and performance tuning Experience in financial markets (equities, futures, FX, etc.) is a plus, but not required Familiarity with data ...

C# skilled Software Engineer/Quant Developer, you'll work closely with portfolio managers, researchers, and data scientists to build and maintain the systems that drive our alpha-generating strategies. You’ll contribute to every part of the investment pipeline—from research tooling and data infrastructure to real … Ensure robustness and scalability in both real-time and batch environments What We’re Looking For: Strong programming experience with C# Solid understanding of software engineering principles, design patterns, and performance tuning Experience in financial markets (equities, futures, FX, etc.) is a plus, but not required Familiarity with data ...

leading systematic investment firm is expanding its Post-Trade Engineering function and is hiring a highly capable Full-Stack Software Engineer to build mission-critical reporting, investor-facing, and post-trade systems. This is an exceptional opportunity to work in a small, high-calibre engineering team where your … automated pipelines Clean architectural patterns, maintainability, correctness Close collaboration with stakeholders; engineers frequently shape product direction What They’re Looking For Core Requirements: Strong software engineering fundamentals (data structures, OO design, distributed systems concepts) Professional experience in C#/.NET Hands-on Angular experience OR strong React/TypeScript ...

leading systematic investment firm is expanding its Post-Trade Engineering function and is hiring a highly capable Full-Stack Software Engineer to build mission-critical reporting, investor-facing, and post-trade systems. This is an exceptional opportunity to work in a small, high-calibre engineering team where your … automated pipelines Clean architectural patterns, maintainability, correctness Close collaboration with stakeholders; engineers frequently shape product direction What They’re Looking For Core Requirements: Strong software engineering fundamentals (data structures, OO design, distributed systems concepts) Professional experience in C#/.NET Hands-on Angular experience OR strong React/TypeScript ...

goal. To support you to do your best work we also offer you the latest tech, generous leave and flexible working options. As a Senior we would expect you to; * Mentor Engineers * Keep the problem front and centre, and champion our principles * Contribute to the evolving standards across ...

goal. To support you to do your best work we also offer you the latest tech, generous leave and flexible working options. As a Senior we would expect you to; * Mentor Engineers * Keep the problem front and centre, and champion our principles * Contribute to the evolving standards across ...

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 in a modern … microservice architecture. Proven background working in cloud environments (ideally AWS). Familiarity with CI/CD pipelines and automation tools. Solid grasp of software testing, TDD, and Agile methodologies. Good communication skills and the ability to work collaboratively in a hybrid setup. If you’re an experienced Java Engineer ...

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 in a modern … microservice architecture. Proven background working in cloud environments (ideally AWS). Familiarity with CI/CD pipelines and automation tools. Solid grasp of software testing, TDD, and Agile methodologies. Good communication skills and the ability to work collaboratively in a hybrid setup. If you’re an experienced Java Engineer ...

case, and we’ll consider expanding our tech stack. ‍ You're a great fit if You have at least 4+ years of experience in software engineering , and back yourself as an individual contributor . You're opinionated on software engineering best practices , balanced by a bias for shipping ...

future. Be part of the future of investing. Shape it with us. What You'll Be Doing Building and deploying scalable, secure, and compliant software at pace. Integrating HL web and mobile apps with existing and new systems to deliver a seamless client experience across a range of products ...

operation and closing over 90 million ledger, the XRPL offers streamlined development, low transaction costs, high performance, and sustainability. We are looking for senior engineering talent to help us maintain this high technical bar, while building innovative solutions to ensure the XRPL can power the growing needs … global digital economy. WHAT YOU'LL DO Increase the capabilities, performance, scalability, and reliability of the XRP ledger. Participate in the full software development lifecycle, including architecture, technical design, C++ development, bug fixing, as well as functional and performance validations. Be part of the open-source XRP ledger community ...

Senior SDET - £75,000 - £85,000 per annum - Largely remote - 1 UK office visit per month A key client is looking to add a senior SDET with strong API testing experience. You will be joining a new teams and working on a brand new greenfield platform build, working … test suites; validating interactions across multiple distributed services. You will be comfortable with paired programming and well versed in agile software development methodologies. As this is the first QA hire in this team, you will also be responsible for establishing and implementing their testing strategy. Essential skills Strong backend ...

Senior SDET - £75,000 - £85,000 per annum - Largely remote - 1 UK office visit per month A key client is looking to add a senior SDET with strong API testing experience. You will be joining a new teams and working on a brand new greenfield platform build, working … test suites; validating interactions across multiple distributed services. You will be comfortable with paired programming and well versed in agile software development methodologies. As this is the first QA hire in this team, you will also be responsible for establishing and implementing their testing strategy. Essential skills Strong backend ...

Join OCI to design and deliver cloud-scale DDoS protection as part of our edge security platform. You'll design and ship high-performance detection and mitigation systems, automate operations end-to-end, and help ...

Join OCI to design and deliver cloud-scale DDoS protection as part of our edge security platform. You'll design and ship high-performance detection and mitigation systems, automate operations end-to-end, and help ...

about to scale fast. Backed by £1.3M in investment (and climbing) , they’re expanding their engineering team and are on the hunt for a Senior Developer to help shape the future of their platform. This is your chance to work where cutting-edge fintech meets real-world impact. Building … Strong experience with both Node.JS and React (ideally stronger on the backend side) Experience working on a 0-1 development cycle Experience with software design principles and architectural patterns. Ideally someone who has worked on a unique start-up environment and loves it! Additional Information: This role is paying ...

about to scale fast. Backed by £1.3M in investment (and climbing) , they’re expanding their engineering team and are on the hunt for a Senior Developer to help shape the future of their platform. This is your chance to work where cutting-edge fintech meets real-world impact. Building … Strong experience with both Node.JS and React (ideally stronger on the backend side) Experience working on a 0-1 development cycle Experience with software design principles and architectural patterns. Ideally someone who has worked on a unique start-up environment and loves it! Additional Information: This role is paying ...

human well-being is safeguarded while closing the gaps in critical global labour needs. About the Role We’re looking for a hands-on Senior Robotics Engineer to turn our robotics stack into a working product. This isn’t a coordination-only role. You’ll write code, integrate … subsystems, debug real robots, and build the software layer that brings everything together for the end user. You’ll lead a small team focused on application-level logic. This is where everything meets: controls, navigation, perception, learning, and platform. Your goal is to ship a cohesive, usable system that ...

About HL and the opportunity. We're building the next generation platform for one of the UK's largest financial services companies, trusted by over 2 million clients and managing c.£150 billion in assets. ...