10 of 10 Senior C# Developer Jobs in London

Senior C# Developer/Software Engineer (C# .Net) London onsite to £150k Opportunity to progress your career in a senior, hands-on C# Developer role at a global Asset Manager with c$3 million under management. As a Senior C# Developer within the trading … ll often be collaborating with he strategy team on Greenfield projects which you'll take ownership of and will see the business impact of. There's a focus on C# .Net backend and API development although you'll also have elements of front end work with JavaScript and React.js. Location: You'll be based in plush City office on … a fulltime basis, Monday to Friday. About you: You have expertise with C# .Net, ASP.Net development You have a strong knowledge of databases (SQL or Oracle) You're comfortable with JavaScript/React You have a thorough knowledge of Computer Science fundamentals such as OOP, Design Patterns, Data Structures, Algorithms You are collaborative with excellent communication and stakeholder management More ❯

Senior C# Developer/Engineer (C# .Net Core) London/WFH to £85k Are you a skilled C# Developer looking to progress your career in a senior, hands-on role? You could be at a successful and scaling Retail FX Brokerage working on Greenfield systems. As a Senior C# Developer you'll be designing and developing high quality, maintainable, and reliable code for a real-time, low latency trading systems built mostly in C# and React deployed to Azure. You'll focus on C# .Net backend development within an AWS environment, but also with exposure across the full technology stack in … scratch. Location/WFH: You'll join colleagues in the London office Monday to Wednesday with flexibility to work from home Thursday and Friday. About you: You have strong C# .Net Core backend development experience You have a good knowledge of microservices and Cloud (AWS or Azure) experience, ideally, you'll have some experience with Docker/Kubernetes, EKS More ❯

Senior C# Developer – Endur Transition | Commodities Trading House | £120k + Bonus + Benefits | 2-3 Days Hybrid/Week in London A hands-on Senior C# Developer is required for a global trading company operating across energy, chemicals, metals, machinery, infrastructure, food, and financial services. With a strong footprint in … oil, natural gas, LNG, and renewables . They are looking to bring someone on who is keen on learning and picking up on Endur for their ETRM systems. This C# Developer role will focus on building, enhancing, and optimising the company’s Energy Trading and Risk Management (ETRM) platform. You’ll be designing and implementing new solutions … a developer who can deliver immediate impact — coding, configuring, and optimising Endur to ensure scalability and performance when upgrading them from version 18 to 25. As a C# Developer focusing on Endur, you’ll work closely with business users, analysts, and other technologists to deliver solutions across front, middle, and back office , particularly around pricing More ❯

Senior C# Developer – Endur Transition | Commodities Trading House | £120k + Bonus + Benefits | 2-3 Days Hybrid/Week in London A hands-on Senior C# Developer is required for a global trading company operating across energy, chemicals, metals, machinery, infrastructure, food, and financial services. With a strong footprint in … oil, natural gas, LNG, and renewables . They are looking to bring someone on who is keen on learning and picking up on Endur for their ETRM systems. This C# Developer role will focus on building, enhancing, and optimising the company’s Energy Trading and Risk Management (ETRM) platform. You’ll be designing and implementing new solutions … a developer who can deliver immediate impact — coding, configuring, and optimising Endur to ensure scalability and performance when upgrading them from version 18 to 25. As a C# Developer focusing on Endur, you’ll work closely with business users, analysts, and other technologists to deliver solutions across front, middle, and back office , particularly around pricing More ❯

Senior Backend Developer (C#/.Net) | Brand New Trading Payments Desk | £130,000 + Bonus + Benefits | London Hybrid I am looking for a Senior Backend Engineer with a .Net (C#) focus for a Trading House that build cross asset trading systems. The FinTech are building from the ground up and currently … role is paying up to £130,000 + bonus + benefits 📍Located in London City, St Paul's, with 3 days per week from the office 🧑.Net, C#, .Net Core Responsibilities of the Senior Backend Developer: Designing, coding, and testing all components of modern web applications. Contribute to the overall architecture and design … of the technology created/maintained by the delivery team. Develop Web Trading Applications using .Net, C# Develop solutions to a high standard that is maintainable, testable and meets the requirement’s acceptance criteria. Adhere to development best practices and processes. Communicate with team members, introduce ideas, and keep abreast of the latest technologies If you are interested in More ❯

Senior Backend Developer (C#/.Net) | Brand New Trading Payments Desk | £130,000 + Bonus + Benefits | London Hybrid I am looking for a Senior Backend Engineer with a .Net (C#) focus for a Trading House that build cross asset trading systems. The FinTech are building from the ground up and currently … role is paying up to £130,000 + bonus + benefits 📍Located in London City, St Paul's, with 3 days per week from the office 🧑.Net, C#, .Net Core Responsibilities of the Senior Backend Developer: Designing, coding, and testing all components of modern web applications. Contribute to the overall architecture and design … of the technology created/maintained by the delivery team. Develop Web Trading Applications using .Net, C# Develop solutions to a high standard that is maintainable, testable and meets the requirement’s acceptance criteria. Adhere to development best practices and processes. Communicate with team members, introduce ideas, and keep abreast of the latest technologies If you are interested in More ❯

Role Type : Perm Title – Senior C# Engineer Client – Established Financial Institution Salary - Up to £140,000 P/A + Bonus Location – London/Hybrid My client is a well-established and successful tech house working in the finance sector who are looking a talented senior C# Developer, with outstanding technical and … with some of the best technologists out there, one some of the most up to date tech in the industry, on a greenfields project! Requirements: Strong experience working with C#/.Net Experience working with Cloud Technologies (Azure preferred) Experience working with Typescript - Angular or React Strong SQL experience Finance experience a plus! Strong Communication skills with a drive More ❯

Role Type : Perm Title – Senior C# Engineer Client – Established Financial Institution Salary - Up to £140,000 P/A + Bonus Location – London/Hybrid My client is a well-established and successful tech house working in the finance sector who are looking a talented senior C# Developer, with outstanding technical and … with some of the best technologists out there, one some of the most up to date tech in the industry, on a greenfields project! Requirements: Strong experience working with C#/.Net Experience working with Cloud Technologies (Azure preferred) Experience working with Typescript - Angular or React Strong SQL experience Finance experience a plus! Strong Communication skills with a drive More ❯

As a C# skilled 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-time trading systems. Key Responsibilities: Design, develop, and optimize high … performance trading tools and data pipelines using C# and ideally Python Build research platforms that empower quantitative analysts and strategists Integrate and manage large, complex datasets from a variety of sources Collaborate with quants and PMs to implement and backtest trading models 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 science tools, APIs, and time-series databases is beneficial Self-starter attitude with a sharp eye for detail and a high level of ownership Why Join? Competitive More ❯

As a C# skilled 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-time trading systems. Key Responsibilities: Design, develop, and optimize high … performance trading tools and data pipelines using C# and ideally Python Build research platforms that empower quantitative analysts and strategists Integrate and manage large, complex datasets from a variety of sources Collaborate with quants and PMs to implement and backtest trading models 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 science tools, APIs, and time-series databases is beneficial Self-starter attitude with a sharp eye for detail and a high level of ownership Why Join? Competitive More ❯