1 to 25 of 26 Senior Systems Developer Jobs in the UK

This job is brought to you by Jobs/Redefined, the UK's leading over-50s age inclusive jobs board. Senior Case Management Systems Developer Department: IT Employment Type: Permanent - Full Time Location: Derby, UK Description To support the firm's ambitious growth plans, we are looking for a skilled Senior Systems Developer to join our Systems Development team to lead the development and optimisation of our legal case management systems, workflows and integrations, primarily within OneAdvanced's Partner for Windows (P4W) environment. As a Senior Case Management Systems Developer, you will be a lead technical resource for the development, configuration and … effective progress updates to ensure the management of delivery risks and alignment with IT standard governance. Mentor junior developers and assist with the provision of technical leadership within the Systems Development Team. Assist and with user training and support. Troubleshoot problems. Create and maintain reporting solutions using MS SQL reporting services and other reporting tools. Support the wider IT More ❯

Senior Software Developers specialising in trading systems required for an excellent client based in London. The successful Software Developer will join a small but extremely talented development team. You will be exposed to creating and maintaining our client's own applications based around a C#/.NET/SQL Server/ASP.NET universe. Many projects More ❯

Senior Software Developers specialising in trading systems required for an excellent client based in London. The successful Software Developer will join a small but extremely talented development team. You will be exposed to creating and maintaining our client's own applications based around a C#/.NET/SQL Server/ASP.NET universe. Many projects More ❯

Recruitment Location: london, United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right Job Views: 2 Posted: 31.05.2025 Expiry Date: 15.07.2025 col-wide Job Description: Senior Trading Software Developers required for an excellent client who are in the trading industry and their office is based in the City of London. The successful Software Developer More ❯

Senior C# Developer/Software Engineer (Windows Desktop Trading Systems) London to £140k Are you a Senior C# Developer with strong Windows desktop development skills combined with banking/financial services experience? You could be progressing your career at a Hedge Fund with over $10 billion under management. As a Senior C# Developer you will work on critical systems across front, middle and back office systems to support trading, operations, finance, compliance and investor relations, optimising system performance to ensure efficient real-time data processing, reporting and automation of operational workflows. You'll focus on building C#, WinForms, WPF desktop applications and design and implementation …/or Angular. This is a senior, hands-on position, you'll collaborate with colleagues in the US and Canada and be the sole resource on these systems for the UK. Location/WFH: You'll join colleagues in the London office with flexibility to work from home once a week; there's a friendly and collaborative More ❯

Senior C# Developer/Software Engineer (Windows Desktop Trading Systems) London to £140k Are you a Senior C# Developer with strong Windows desktop development skills combined with banking/financial services experience? You could be progressing your career at a Hedge Fund with over $10 billion under management. As a Senior C# Developer you will work on critical systems across front, middle and back office systems to support trading, operations, finance, compliance and investor relations, optimising system performance to ensure efficient real-time data processing, reporting and automation of operational workflows. You'll focus on building C#, WinForms, WPF desktop applications and design and implementation …/or Angular. This is a senior, hands-on position, you'll collaborate with colleagues in the US and Canada and be the sole resource on these systems for the UK. Location/WFH: You'll join colleagues in the London office with flexibility to work from home once a week; there's a friendly and collaborative More ❯

Social network you want to login/join with: Senior C# Developer Desktop Trading Systems, slough col-narrow-left Client: Client Server Location: slough, United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right Job Views: 1 Posted: 04.06.2025 Expiry Date: 19.07.2025 col-wide Job Description: Senior C# Developer/Software Engineer (Windows Desktop Trading Systems) London to £140k Are you a Senior C# Developer with strong Windows desktop development skills combined with banking/financial services experience? You could be progressing your career at a Hedge Fund with over $10 billion under management. As a Senior C# Developer you will work on critical systems across front, middle and back office systems to support trading, operations, finance, compliance and investor relations, optimising system performance to ensure efficient real-time data processing, reporting and automation of operational workflows. You'll focus on building C#, WinForms, WPF desktop applications and design and implementation of scalable, service orientated More ❯

Social network you want to login/join with: Senior Python Developer (Distributed Systems) - Up to £140,000 P/A - London, Slough Client: Hunter Bond Location: Slough, United Kingdom Job Category: Other EU work permit required: Yes Job Views: 10 Posted: 26.06.2025 Expiry Date: 10.08.2025 Job Description: Role: Python Developer Salary … A + Bonus + Benefits Location: London Client: Top Fintech My client is a well-established and successful tech house working in the finance sector, seeking a Python Developer with outstanding technical and communication skills to join their team of software engineers. You will work with top technologists from leading tech houses and trading firms on modern, innovative More ❯

Social network you want to login/join with: Senior Python Developer (Distributed Systems) - Up to £140,000 P/A - London, london col-narrow-left Client: Hunter Bond Location: london, United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right Job Views: 4 Posted: 16.06.2025 Expiry Date: 31.07.2025 col-wide Job … Description: Role: Python Developer Salary : £140,000 P/A + Bonus + Benefits Location: London Client : Top Fintech My client is a well-established and successful tech house working in the finance sector who are looking for a Python Developer, with outstanding technical and communication skills to join their existing team of software engineers! You More ❯

Summary: A boutique prop trading firm with a strong focus on high quality technology and systematic and quant trading models are looking for a Senior C# Developer to join their small, agile, London-based team. With zero red tape or bureaucracy often associated with bigger buy-side firms and investment banks, this London-based team of … engineers, researchers, modellers and traders know how to get things done in a cutting-edge market. Working next to the business, the successful C# Developer will be working with vast, complex data sets, and will be building algorithmic trading models and infrastructure in C#/.NET Core and SQL, directly with London-based quants and traders. Requirement s More ❯

the job poster from bet365 Hiring for the technology department of the world's favourite online sports betting brand! Who we are looking for A Senior Business Systems Developer, who will enhance operational efficiency and data accuracy, implementing Google Tag Manager (GTM) for Google Ads tracking and integrating systems. You will be a skilled and … management. Solid understanding of HTML and CSS. Experience with data integration projects, particularly between SaaS platforms and finance systems. Knowledge of API-based data transfer methods. Familiarity with financial systems, such as Sage 50. Experience of AWS or other Cloud platforms. Familiarity with data security and process ownership principles. Main Responsibilities Automating data collection for precise Google Ads performance … implementing pre-built, easy to maintain HTML templates for communications. Offering ongoing support and documentation to enable self-sufficiency in template maintenance. Automating the transfer of data from several systems to Sage 50, ensuring compliance with legislation. By applying to us you are agreeing to share your Personal Data in accordance with our Recruitment Privacy Policy which can be More ❯

Senior Developer - Systematic Trading Tools (C#/Rust) Senior Developer - Systematic Trading Tools (C#/Rust) 2 days ago Be among the first 25 applicants Get AI-powered advice on this job and more exclusive features. Overall Purpose of the Role We are seeking a senior technology developer … production deployment and operational readiness. The role is currently based in London, with the expectation of relocating to Singapore after approximately six months. Key Responsibilities Take ownership of existing systems and processes, ensuring their stability and effectiveness Design and implement new solutions in response to evolving requirements, maintaining close communication with traders and other stakeholders Collaborate with other developers … Rust experience (preferred) or strong C++ background with a desire to learn Rust on the job Proficient in Python (desired) Solid understanding of relational databases (required) Familiarity with messaging systems such as RabbitMQ or Kafka (preferred) Highly motivated, pragmatic, and solutions-focused, with a "smart and get things done" mindset Willingness to relocate to Singapore after an initial London More ❯

Senior Systems Developer Job Summary NHS Blood and Transplant has an exciting opportunity for Senior Systems Developer to join our in-house development team working in a friendly and progressive environment based in Bristol. You will be responsible for the analysis, design, and maintenance of multiple applications critical to organ … You must have a passion for innovation and a can-do attitude to creating new software systems. Main duties of the job To develop and deploy world-class information systems, application software and database services according to NHSBT corporate business plan using the most appropriate tools and technologies from those approved by the Head of Systems Development and … review new and emerging technologies, products, software and database tools, providing business opportunities and advantages to the organisation, and to bring these to the attention of the Head of Systems Development and Integration and other members of the Business Systems Solutions senior management Team. To maintain existing applications, including collecting change requirements, identifying opportunities for improvement More ❯

Senior Systems Developer Job Summary NHS Blood and Transplant has an exciting opportunity for Senior Systems Developer to join our in-house development team working in a friendly and progressive environment based in Bristol. You will be responsible for the analysis, design, and maintenance of multiple applications critical to organ … You must have a passion for innovation and a can-do attitude to creating new software systems. Main duties of the job To develop and deploy world-class information systems, application software and database services according to NHSBT corporate business plan using the most appropriate tools and technologies from those approved by the Head of Systems Development and … review new and emerging technologies, products, software and database tools, providing business opportunities and advantages to the organisation, and to bring these to the attention of the Head of Systems Development and Integration and other members of the Business Systems Solutions senior management Team. To maintain existing applications, including collecting change requirements, identifying opportunities for improvement More ❯

Senior Systems Developer Job Summary NHS Blood and Transplant has an exciting opportunity for Senior Systems Developer to join our in-house development team working in a friendly and progressive environment based in Bristol. You will be responsible for the analysis, design, and maintenance of multiple applications critical to organ … You must have a passion for innovation and a can-do attitude to creating new software systems. Main duties of the job To develop and deploy world-class information systems, application software and database services according to NHSBT corporate business plan using the most appropriate tools and technologies from those approved by the Head of Systems Development and … review new and emerging technologies, products, software and database tools, providing business opportunities and advantages to the organisation, and to bring these to the attention of the Head of Systems Development and Integration and other members of the Business Systems Solutions senior management Team. To maintain existing applications, including collecting change requirements, identifying opportunities for improvement More ❯

Social network you want to login/join with: NHS Blood and Transplant has an exciting opportunity for Senior Systems Developer to join our in-house development team working in a friendly and progressive environment based in Bristol. You will be responsible for the analysis, design, and maintenance of multiple applications critical to organ and … You must have a passion for innovation and a can-do attitude to creating new software systems. Main duties of the job To develop and deploy world-class information systems, application software and database services according to NHSBT corporate business plan using the most appropriate tools and technologies from those approved by the Head of Systems Development and … review new and emerging technologies, products, software and database tools, providing business opportunities and advantages to the organisation, and to bring these to the attention of the Head of Systems Development and Integration and other members of the Business Systems Solutions senior management Team. To maintain existing applications, including collecting change requirements, identifying opportunities for improvement More ❯

We support organisations across a variety of sectors including finance, retail, telecommunications, utilities, gaming, government and insurance. What You'll Bring: We’re looking for a Senior Systems Developer to join our growing Integrations and Decisioning team. Day to Day You’ll Be: Design and build reliable backend systems and infrastructure tooling Use TDD … programming skills in Node.js or similar backend language Deep understanding of TDD and a strong focus on automated testing Experience with Cloud Platforms AWS or GCP Experience owning backend systems in production environments Comfort working directly with clients to gather requirements and debug issues Strong problem-solving skills and a desire to understand the root cause of complex issues … Clear communicator—both in writing and on calls Desirable Skills & Experience: Infrastructure-as-code, CI/CD, and observability tooling Experience scaling systems under sustained load Contributions to internal tooling or open source Experience with large datasets and machine learning models Impact You'll Make: What’s In It For you? At TransUnion you will be joining a friendly More ❯

We support organisations across a variety of sectors including finance, retail, telecommunications, utilities, gaming, government and insurance. What You'll Bring: We're looking for a Senior Systems Developer to join our growing Integrations and Decisioning team. Day to Day You'll Be: Design and build reliable backend systems and infrastructure tooling Use TDD … programming skills in Node.js or similar backend language Deep understanding of TDD and a strong focus on automated testing Experience with Cloud Platforms AWS or GCP Experience owning backend systems in production environments Comfort working directly with clients to gather requirements and debug issues Strong problem-solving skills and a desire to understand the root cause of complex issues … Clear communicator-both in writing and on calls Desirable Skills & Experience: Infrastructure-as-code, CI/CD, and observability tooling Experience scaling systems under sustained load Contributions to internal tooling or open source Experience with large datasets and machine learning models Impact You'll Make: What's In It For you? At TransUnion you will be joining a friendly More ❯

approximately US$121 billion on behalf of major pension funds, endowments, foundations, governments and other investors based in the U.S. and abroad.**Position Overview:**We are seeking a senior quant developer to join the Implementation team. You will be part of a small team of domain experts who are responsible for the ongoing design, development, and … and will lead the build-out of industry-leading capabilities for trading high-yield and investment-grade corporate bonds.The ideal candidate will have hands-on experience with engineering complex systems and pipelines, as well as experience with Python/Pandas/Polars, SQL, AWS, Portfolio Construction/Optimization, Trading and Trading Systems, and Simulation. Prior experience with systematic More ❯

Senior C++ Quantitative Developer - Ultra High Frequency Trading Location: London Established HFT firm seeking an experienced C++ developer passionate about high-performance, low-latency systems. The role of 'Senior Quantitative Developer' offers the chance to work with top professionals on challenging technical projects, including low-latency C++ development, HFT algorithm … experts to design, develop, and optimize ultra-low-latency trading algorithms. Focus on CPU cache optimization, memory management, and threading, requiring a strong foundation in high-performance programming and systems architecture. Work closely with FPGA systems and lead initiatives to enhance trading infrastructure, contributing to client and investor success. Role Requirements: Bachelor's or Master's degree in … Science, Engineering, or related field 5+ years of C++ experience, emphasizing low-level programming and metaprogramming for high-performance applications Expertise in CPU architecture, memory management, multithreading, and Linux systems Experience with high-frequency trading or market order execution systems Strong analytical, problem-solving, and testing skills Excellent interpersonal skills and a collaborative mindset What's On Offer More ❯

Social network you want to login/join with: Senior C++ Quantitative Developer - Ultra High Frequency Trading - Leading Quant & Systematic Fund, London col-narrow-left Client: Oxford Knight Location: London, United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right Job Reference: fe5b574aacef Job Views: 5 Posted: 29.06.2025 Expiry Date: 13.08.2025 col-wide … an elite group of developers and quantitative experts to design, develop, and optimize ultra-low-latency trading algorithms. This position requires a strong foundation in high-performance programming and systems architecture, focusing on CPU cache optimization, memory management, and threading. You will also collaborate closely with FPGA systems and lead initiatives to refine trading infrastructure, ultimately driving success … or a related field 5+ years of C++ experience, focusing on low-level C++ and metaprogramming for high-performance applications Expertise in CPU architecture, memory management, multithreading, and Linux systems Prior experience with high-frequency trading or market order execution systems Excellent analytical and problem-solving skills, with an eye for precision and testing Strong interpersonal skills and More ❯

Senior Developer - Frontend XR Systems Architecture Join to apply for the Senior Developer - Frontend XR Systems Architecture role at Nexus Studios Senior Developer - Frontend XR Systems Architecture 2 days ago Be among the first 25 applicants Join to apply for the Senior Developer - Frontend XR Systems Architecture role at Nexus Studios Location : Remote - able to work 10am - 7pm UK time Type : Long term contract Start Date : July 2025 Nexus Studios is a global creative studio working with award-winning directors across animation, artful live-action and immersive to redefine the boundaries of entertainment. Our work has received accolades from BAFTA … then taking ownership of building the overall frontend framework, to support the full app development team from prototype through live operations. Support the other developers on the project with systems and tooling they require for their tasks. Support Tech Lead to approve PR/Merge requests from the team as/when needed. Work closely with other technical teams More ❯

Senior Embedded Systems Developer - £55k - £65k – Reading - Hybrid My client is an established company in their niche providing end-to-end solutions for a range of sectors. Due to sustained success, they’re expanding their development team. Main duties: + Creating, implementing, and managing software programmes + Continuous integration and development of software. + Collaborating More ❯

Social network you want to login/join with: Senior Developer - Systematic Trading Tools, London Client: Capula Location: London, United Kingdom Job Category: Other EU work permit required: Yes Job Reference: 57f03987c213 Job Views: 7 Posted: 22.06.2025 Expiry Date: 06.08.2025 Job Description: Overall Purpose of the Role We are seeking a senior technology developer … after approximately six months. Similarly, we are open to candidates based in Singapore, who will come to London for six months of training. Key Responsibilities Take ownership of existing systems and processes, ensuring their stability and effectiveness. Design and implement new solutions in response to evolving requirements, maintaining close communication with traders and other stakeholders. Collaborate with other developers … preferred) or strong C++ background with a desire to learn Rust on the job. Proficient in Python (desired). Solid understanding of relational databases (required). Familiarity with messaging systems such as RabbitMQ or Kafka (preferred). Highly motivated, pragmatic, and solutions-focused, with a "smart and get things done" mindset. Willingness to relocate to Singapore after an initial More ❯

Social network you want to login/join with: Senior Cognos Developer to translate technical systems specifications into working for our public sector client, London Client: S.i. Systems Location: London, United Kingdom Job Category: Other EU work permit required: Yes Job Reference: 5601bab2ff1b Job Views: 5 Posted: 29.06.2025 Expiry Date: 13.08.2025 Job Description: Senior Cognos Developer to translate technical systems specifications into working solutions for our public sector client. Duration: ASAP until March 31. Work Mode - 100% remote Responsibilities: Translate technical systems specifications into working, tested applications. Develop detailed programming specifications. Write and/or generate code. Compile data-driven programs and maintain existing ones. Must Haves: Hands … in a public sector environment or large business and IT transformation projects. Experience in large-scale implementations. Technical expertise to enhance, configure, customize, and integrate case management systems with external or related applications. Experience in requirements elicitation, fit-gap analysis, design, and development phases in large Cognos implementations. Ability to advise and provide technical recommendations on infrastructure More ❯