151 to 175 of 392 Senior Developer Jobs in London

Our client, a well-established global investment firm, is currently looking to hire a Senior Developer to support the technical development of its front and back-office systems. This is an excellent opportunity to contribute to a high-performing technology team at the core of a fast-paced, data-driven investment environment. The role offers strong exposure to … implementation and promoting best practices across the tech team Mentoring junior developers and supporting team growth Driving cloud adoption and contributing to security architecture Communicating technical solutions effectively to senior stakeholders Candidate Profile: 5+ years of experience in software development, ideally within financial services or enterprise environments Strong technical skills across modern programming languages and cloud platforms (e.g., AWS More ❯

Our client, a well-established global investment firm, is currently looking to hire a Senior Developer to support the technical development of its front and back-office systems. This is an excellent opportunity to contribute to a high-performing technology team at the core of a fast-paced, data-driven investment environment. The role offers strong exposure to … implementation and promoting best practices across the tech team Mentoring junior developers and supporting team growth Driving cloud adoption and contributing to security architecture Communicating technical solutions effectively to senior stakeholders Candidate Profile: 5+ years of experience in software development, ideally within financial services or enterprise environments Strong technical skills across modern programming languages and cloud platforms (e.g., AWS More ❯

Our client, a well-established global investment firm, is currently looking to hire a Senior Developer to support the technical development of its front and back-office systems. This is an excellent opportunity to contribute to a high-performing technology team at the core of a fast-paced, data-driven investment environment. The role offers strong exposure to … implementation and promoting best practices across the tech team Mentoring junior developers and supporting team growth Driving cloud adoption and contributing to security architecture Communicating technical solutions effectively to senior stakeholders Candidate Profile: 5+ years of experience in software development, ideally within financial services or enterprise environments Strong technical skills across modern programming languages and cloud platforms (e.g., AWS More ❯

Senior Python Developer - Financial Technology Up to £850 per day via umbrella | Hybrid Working | London Area Join a dynamic team within a global Tier 1 investment bank building cutting-edge financial systems that operate at global scale. They are seeking an exceptional Python developer to work on high-availability trading platforms in a fast-paced, front office More ❯

I am working with a consutlancy who need a DevOps engineer to start a project on 7th July. £500 per day 3 month fully remote Inside IR35 AWS DevOps engineer: - Someone who has previously lead a team - Containers (Docker/ More ❯

work in a hybrid manner, 3 days a week. Retelligence are partnered with a fast-growing client based in North London working on exciting greenfield projects and require a senior full stack engineer. Candidates will need to have ambition and great experience managing and owning the full software lifecycle from architecture build and decisions, through testing phases and ultimately More ❯

Job Title: Senior OneStream Developer Employment type: Permanent Location: London – Hybrid working Salary: Negotiable As part of a significant Finance Transformation programme, we have an opportunity for a OneStream Developer to join our client and be part of their OneStream implementation. This newly created position will see this individual maintaining, Supporting and developing OneStream on both Planning More ❯

Job Title: Senior OneStream Developer Employment type: Permanent Location: London – Hybrid working Salary: Negotiable As part of a significant Finance Transformation programme, we have an opportunity for a OneStream Developer to join our client and be part of their OneStream implementation. This newly created position will see this individual maintaining, Supporting and developing OneStream on both Planning More ❯

Job Title: Senior Ruby on Rails Developer (Backend) Location: London (Hybrid – 2 days minimum per week in office) Salary: Up to £90,000 - 110,000 Contract Type: Full-time, Permanent Working Hours: Fully flexible hours About the Role We’re looking for a Senior Ruby on Rails Developer to join my clients team and take ownership More ❯

Job Title: Senior Ruby on Rails Developer (Backend) Location: London (Hybrid – 2 days minimum per week in office) Salary: Up to £90,000 - 110,000 Contract Type: Full-time, Permanent Working Hours: Fully flexible hours About the Role We’re looking for a Senior Ruby on Rails Developer to join my clients team and take ownership More ❯

Senior Software Developer (PYTHON/AWS/REACT) - Health tech - tech for good, make a positive impact on the world Highly successful and fast growing organisation has an exciting opportunity for a Senior Software Developer (PYTHON/AWS/REACT). They are looking for a talented individual who will design, implement, and maintain their publishing More ❯

Senior Python Developer (PYTHON/AWS/REACT) - Health tech - tech for good, make a positive impact on the world Highly successful and fast growing organisation has an exciting opportunity for a Senior Python Developer (PYTHON/AWS/REACT). They are looking for a talented individual who will design, implement, and maintain their publishing More ❯

Our client, a fast-growing FinTech organisation delivering innovative digital financial solutions, is seeking a highly skilled Senior React Native Developer to join their dynamic technology team. This is a key opportunity to play a leading role in the development and launch of a major new mobile app scheduled for release in September 2025. The successful candidate will … supportive, and fast-paced work environment. * Opportunity to play a key role in the launch of a major FinTech mobile app. Apply today to be considered for this fantastic Senior React Native Developer opportunity. Interviews are taking place shortly! Keywords: Senior React Native Developer, Mobile App Development, UI/UX, iOS, Android, Redux, RESTful APIs, GitHub More ❯

work in a hybrid manner, 3 days a week. Retelligence are partnered with a fast-growing client based in North London working on exciting greenfield projects and require a senior full stack engineer. Candidates will need to have ambition and great experience managing and owning the full software lifecycle from architecture build and decisions, through testing phases and ultimately More ❯

Job Title: Senior Ruby on Rails Developer (Backend) Location: London (Hybrid – 2 days minimum per week in office) Salary: Up to £90,000 - 110,000 Contract Type: Full-time, Permanent Working Hours: Fully flexible hours About the Role We’re looking for a Senior Ruby on Rails Developer to join my clients team and take ownership More ❯

/w - Bermondsey Role : We're looking for 2 engineers to work for a BioTech client based in Bermondsey. The team consists of a Engineering Manager, Team Lead, 2 Senior Engineers and a Full Stack engineer. The client are currently making rapid progress on drug discovery, using AI, Data, Research and Software Development. They're currently at clinical trials More ❯

Hays Software Engineering are looking for a Senior Developer to join a Derivatives team within a world-renowned Investment Management business to own developments within their Calypso & Broadridge platforms. What you will be doing: Drive Innovation: Lead enhancements for Calypso and Broadridge SFCM, shaping their future to better serve front, middle, and back-office users. Lead & Mentor: Share More ❯

Java Developer – 12-Month FTC | Greenfield Build | London 🚨 We’re partnering with a leading systematic family office on an exciting opportunity for a Senior Java Developer to join their Middle Office Engineering team. The team is embarking on a greenfield digital transformation programme, rebuilding key trading and operational systems from the ground up. 📍 Location: Central London … screen with engineering leads On-site technical deep dive (~2–2.5 hours) with the wider team Feedback and offer turnaround expected within days If you’re a seasoned Java developer with serious Kafka experience and want to work on a genuinely interesting greenfield project at a high-performance trading firm, apply here or get in touch directly. More ❯

Java Developer – 12-Month FTC | Greenfield Build | London 🚨 We’re partnering with a leading systematic family office on an exciting opportunity for a Senior Java Developer to join their Middle Office Engineering team. The team is embarking on a greenfield digital transformation programme, rebuilding key trading and operational systems from the ground up. 📍 Location: Central London … screen with engineering leads On-site technical deep dive (~2–2.5 hours) with the wider team Feedback and offer turnaround expected within days If you’re a seasoned Java developer with serious Kafka experience and want to work on a genuinely interesting greenfield project at a high-performance trading firm, apply here or get in touch directly. More ❯

Java Developer – 12-Month FTC | Greenfield Build | London We’re partnering with a leading systematic family office on an exciting opportunity for a Senior Java Developer to join their Middle Office Engineering team. The team is embarking on a greenfield digital transformation programme, rebuilding key trading and operational systems from the ground up. Location: Central London … screen with engineering leads On-site technical deep dive (~2–2.5 hours) with the wider team Feedback and offer turnaround expected within days If you’re a seasoned Java developer with serious Kafka experience and want to work on a genuinely interesting greenfield project at a high-performance trading firm, apply here or get in touch directly. More ❯

Join us as a Senior Etrading Java Developer at VP level and be involved in the development of our new strategic platform, Asgard. To be successful as a Senior Etrading Java Developer within this team, you should have: Electronic Trading and financial experience Experience developing and optimizing highly scalable, high-performance, and low-latency systems written … decisions, be a self-starter, and work independently Some other highly valued skills may include: Mentoring junior team members and helping them grow Confidence interacting with business partners and senior stakeholders, providing clear, concise, and accurate updates Knowledge of Equities Trading, Referencedata, Market data feeds, Analytics, FIX protocol, Signals, Smart order routing, Systematic internalization, Trading algorithms Other technical knowledge More ❯

Frontend-Leaning Fullstack Developer (React) – Contract (6+ Months) React | UI & Reporting Interfaces | UK Payroll Reporting | API Integration Remote (UK-based) | Start: ASAP We’re hiring a Frontend-leaning Fullstack Developer to join a high-performing team driving transformation in UK payroll reporting for a leading global payroll and accounting platform. This role focuses on building intuitive UI tools … Details Rate: £650 + p/d inside IR35 Duration: 6 months initially, with strong potential for extension Fully remote, UK-based contractors only If you’re a React developer with a passion for UI excellence and want to contribute to a market-leading payroll reporting platform, let’s talk. More ❯

Frontend-Leaning Fullstack Developer (React) – Contract (6+ Months) React | UI & Reporting Interfaces | UK Payroll Reporting | API Integration Remote (UK-based) | Start: ASAP We’re hiring a Frontend-leaning Fullstack Developer to join a high-performing team driving transformation in UK payroll reporting for a leading global payroll and accounting platform. This role focuses on building intuitive UI tools … Details Rate: £650 + p/d inside IR35 Duration: 6 months initially, with strong potential for extension Fully remote, UK-based contractors only If you’re a React developer with a passion for UI excellence and want to contribute to a market-leading payroll reporting platform, let’s talk. More ❯

SThree are pleased to announce we’re recruiting for a talented Senior Java Back End Developer to join our excellent team, based in Bank, London. The Senior Java Back End Developer will design, develop, test and support capabilities in our digital experience platform to create competitive advantage for SThree, as part of a small software development More ❯

SThree are pleased to announce we're recruiting for a talented Senior Back End Developer to join our excellent team, based in Bank, London. The Senior Back End Developer will design, develop, test and support capabilities in our digital experience platform to create competitive advantage for SThree, as part of a small software development team. About More ❯