12 of 12 Permanent C# Developer Jobs in London

Senior C# Developer/Software Engineer (C# .Net) London onsite to £150k Join a global hedge fund specialising in sports trading as a Senior C# Developer, working on high-performance, real-time trading systems. You'll own greenfield projects, partner directly with quants and strategy teams and build low-latency backend components and … APIs with C#/.Net, plus occasional frontend work in React. What you'll do: Design and develop real-time trading and pricing systems Lead greenfield feature builds with significant business impact Build backend services, APIs and trading engine components in C# Collaborate closely with strategy, quant and engineering teams Tech: C# .Net, ASP.Net, SQL/Oracle … JavaScript, React 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 More ❯

C# Developer - C#/Sql server/Fixed income The Front office (Fixed Income) software development team requires an agile and versatile specialist and team player with mid level expertise in .Net/C# software. The role requires an experienced individual who is comfortable to work in close partnership with a variety of front office … stakeholders, globally. Role details Title: Software Developer (software engineer) Technical stack C#.NET. Wider stack .Net, .Net Core, C#, SQL Server Permanent role, salary £60-75,000 Location: London City and home working hybrid Focus: Front office Fixed Income Requirements: Good experience with C#/Sql server/Fixed income The role requires design and development of More ❯

C# Developer - C#/Sql server/Fixed income The Front office (Fixed Income) software development team requires an agile and versatile specialist and team player with mid level expertise in .Net/C# software. The role requires an experienced individual who is comfortable to work in close partnership with a variety of front office … stakeholders, globally. Role details Title: Software Developer (software engineer) Technical stack C#.NET. Wider stack .Net, .Net Core, C#, SQL Server Permanent role, salary £60-75,000 Location: London City and home working hybrid Focus: Front office Fixed Income Requirements: Good experience with C#/Sql server/Fixed income The role requires design and development of More ❯

Senior C# Developer/Software Engineer (C# .Net) London onsite to £150k Join a global hedge fund specialising in sports trading as a Senior C# Developer, working on high-performance, real-time trading systems. You'll own greenfield projects, partner directly with quants and strategy teams and build low-latency backend components and … APIs with C#/click apply for full job details More ❯

C# Developer - Energy Trading (Renewables Expansion) Location: Central London (Hybrid) Package: £140,000 - £175,000 Department: Trading Technology/Front & Middle Office Platforms We're an energy trading business building the next generation of pricing, risk, and scheduling platforms as we expand into power and environmental products (PPAs, Guarantees of Origin, carbon certificates) alongside our core gas … a tight-knit engineering team that ships high-impact software used by traders, schedulers, and risk analysts every day. If you enjoy solving real-time systems challenges, writing clean C# in cloud-first architectures, and partnering with the desk, this role is for you. Design & build resilient C#/.NET services and APIs powering pricing, market data ingestion … metrics/tracing), CI/CD, and secure-by-design patterns. Own features end-to-end-from design and documentation to deployment and support. What you'll bring Strong C#/.NET engineering skills (async/await, generics, LINQ, dependency injection, clean architecture). Experience building microservices and REST/gRPC APIs; solid understanding of messaging (Kafka/RabbitMQ More ❯

Graduate/Junior Developer, Python, Linux, C#, Java - London (Teck stack: Graduate/Junior Developer, Python, Linux, C#, Java, .NET 10.0, C#, J2EE, Agile, TDD, BDD, Graduate/Junior Developer) Since 2006 our client's revolutionary marketing software platform has been helping businesses all over the world to attract, engage, and … customers by delivering inbound experiences that are relevant, helpful, and personalized. Having recently launched in the UK, they looking to hire Graduate/Junior Developer (Python, Linux, C#, Java)) to become a part of their ever-growing family. They believe that individual developers are in the best position to make decisions about what should be created, and … roles would be suitable Graduate/Junior Developer who have recently graduated from university and have a basic understanding of any of the following technologies: Python, Linux, C# or Java; which might have been acquired as part of your degree course or through a placement year in industry. At the center of our client's culture is More ❯

Software Developer/Engineer (C# .Net SQL) *London onsite* to £180k+ Are you a technologist with a record of academic achievement? You could be progressing your career working on complex and challenging systems at a Hedge Fund with over $17 billion under management. As a Software Developer you'll collaborate with a team of highly … minimum 2.1 in a STEM discipline from a top tier university (i.e. Russel Group or top 100 global university), backed by A grades at A-level You have advanced C# .Net programming skills including .Net Core (will also consider Java, Python or C++ background if happy to use C# going forward) You have a strong knowledge of SQL … care for elderly relatives Various social groups including sports teams Private healthcare and wellness activities Apply now to find out more about this Software Developer/Engineer (C# .Net SQL) opportunity. At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. We're an equal opportunities employer More ❯

Software Developer/Engineer (C# .Net SQL) London onsite to £180k+ Are you a technologist with a record of academic achievement? You could be progressing your career working on complex and challenging systems at a Hedge Fund with over $17 billion under management. As a Software Developer you'll collaborate with a team of highly More ❯

Role: Junior Quant Developer Location: London Type: Hybrid We're representing a leading global trading firm seeking a talented Risk Technology Developer to join their Front Office Technology group. This team builds and enhances the firm's in-house pricing, PnL, and risk platforms-core systems used daily by portfolio managers, risk managers, and finance teams. … a fast-paced trading environment. What you'll do: Design, develop, and enhance core pricing and risk systems used across global trading desks Build scalable, high-performance solutions in C# and contribute to the firm's quant and risk libraries Partner closely with trading and quant teams to deliver new features and Front Office tools Support and extend Python … and Excel-based analytics used across the business Balance rapid delivery for day-to-day enhancements with long-term strategic projects What you'll bring: Strong proficiency in C# and solid understanding of object-oriented programming Good knowledge of financial instruments (derivatives or structured products) Experience with Python for data analysis or automation Familiarity with SQL Server and relational More ❯

C# Position: System Engineer Overview: System development for financial institutions Job Description: Due to the expansion of system development projects for financial institutions, we are seeking engineers with C#.NET Responsibilities: - Develop systems for financial institutions using C# - Design and implement functions from front-end to back-end based on requirements - Participate in all phases of system development: requirements More ❯

Ref: KM46978 A leading Japanese IT company with a central London office is seeking a C#.NET Developer for its Financial Systems Team. They welcome candidates with knowledge of banking, securities, or insurance operations, and experience developing with C#.NET. Ideal candidates have led enhancements, maintenance, or improvements of existing systems. This position is especially suitable for those with hands … Salary: £40k-£65k depending on experience Start Date: Negotiable Working Hours: Monday to Friday, 9:00–17:00 Location: Central London (Hybrid) WORK STYLE: Hybrid style Financial Systems Developer Main Responsibilities: Develop, maintain, and enhance financial systems (banking, securities, insurance) Develop applications using C#.NET Design, manage, and optimise databases such as SQL Server Propose and implement improvements or … new functionalities for existing systems Coordinate with internal and external stakeholders Financial Systems Developer Ideal Candidate: Development experience with C#.NET (3+ years preferred) Experience with SQL and database operations Knowledge of financial systems or financial operations (e.g., payments, settlements, reporting) is a plus Team development experience (familiarity with version control tools such as Git) Business-level English or More ❯

C#.NET, .NET Core, Entity, API's, SQL Server, GIT, Agile, Windows Server, EDI New Permanent Developer role. Office-based 3-4 days, candidates must live within an easy commute of the office location in Croydon/Purley Our client is looking to increase its Software Development/IT team due to continued business growth. A good understanding of More ❯