1 to 25 of 26 Permanent C# Developer Jobs in London

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 … 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 ...

Looking to excel your career in a start-up environment? C# Developer – VC-backed Cloud Security 💰 Salary up to £120k + equity 📍 London 5 days in office 🌎 Visa sponsorship available We have recently partnered with a rapidly growing VC-backed startup who develop technology to identify … built for rapid deployment and ease of use, enabling organisations to handle threats far more effectively. They are now on the hunt for a C# Developer to work on the system that platform processes billions of events every week, powered by modern cloud infrastructure and innovative methods. ...

Looking to excel your career in a start-up environment? C# Developer – VC-backed Cloud Security 💰 Salary up to £120k + equity 📍 London 5 days in office 🌎 Visa sponsorship available We have recently partnered with a rapidly growing VC-backed startup who develop technology to identify … built for rapid deployment and ease of use, enabling organisations to handle threats far more effectively. They are now on the hunt for a C# Developer to work on the system that platform processes billions of events every week, powered by modern cloud infrastructure and innovative methods. ...

Title: C# Developer Rate: Up to £750/day Location: London (Hybrid) The Opportunity: I am working with a leading global investment bank seeking a C# Developer to join their high-performing FO Trading team. This is an exceptional opportunity to work alongside experienced … technologists and investment professionals building mission-critical systems that drive trading, research, and risk management operations. What You Bring (Required): Deep commercial experience engineering C#/.NET solutions within mission-critical financial services platforms Hands-on delivery of enterprise risk platforms (Market, Credit, Counterparty Risk, XVA) with solid understanding ...

Title: C# Developer Rate: Up to £750/day Location: London (Hybrid) The Opportunity: I am working with a leading global investment bank seeking a C# Developer to join their high-performing FO Trading team. This is an exceptional opportunity to work alongside experienced … technologists and investment professionals building mission-critical systems that drive trading, research, and risk management operations. What You Bring (Required): Deep commercial experience engineering C#/.NET solutions within mission-critical financial services platforms Hands-on delivery of enterprise risk platforms (Market, Credit, Counterparty Risk, XVA) with solid understanding ...

Senior Microsoft Stack Developer, C#, .NET, Azure, React, Central London, Mainly Remote Senior Microsoft Stack Developer required to work for an exciting and growing business based in Central London. However, this will be mainly remote and the expectation will … office circa twice a month. You will be hugely proficient in Microsoft Stack Technologies such as .NET, C# and Azure. You will also have experience with React, along with having some knowledge of and exposure to DevSecOps. Read on for more details... Experience required: Proven hands-on track record ...

Hiring: Junior C# Quantitative Developer | Hedge Fund | London (Hybrid) Are you a talented C# developer with a passion for finance, data, and quantitative problem-solving ? Join a leading hedge fund where technology and mathematics drive every decision. We’re looking for a Junior Quantitative … experienced quants, traders, and engineers — building and optimizing the systems that power our trading strategies. 💼 What You’ll Do Develop and maintain high-performance C# applications used in research, risk, and trading Collaborate with quants to implement pricing models and backtesting frameworks Enhance data processing pipelines and contribute ...

growing trading and technology business based in the City of London, and they're working closely with Tempest Vane Partners to find a Senior C# Software Engineer. With a collaborative team of researchers and software engineers, they are developing cutting-edge tools and platforms to analyse and trade across … balanced approach to work and life, alongside regular team socials and a supportive culture. What You’ll Do Build and enhance applications using C#/.NET and SQL Server as part of a small but highly capable team. Contribute to new product development, shaping systems from early stages through ...

growing trading and technology business based in the City of London, and they're working closely with Tempest Vane Partners to find a Senior C# Software Engineer. With a collaborative team of researchers and software engineers, they are developing cutting-edge tools and platforms to analyse and trade across … balanced approach to work and life, alongside regular team socials and a supportive culture. What You’ll Do Build and enhance applications using C#/.NET and SQL Server as part of a small but highly capable team. Contribute to new product development, shaping systems from early stages through ...

Title: C# Developer - Leading Trading Firm - Up to £100k + Bonus + Package Client: Elite FinTech Firm Experience Level: 2+ years' Salary: Up to £100k + Bonus + Package Location: London (Flexible Working) An elite fintech firm are searching for C# Developers to join a group … high performance tools - utilising cutting edge technology across a diverse range of greenfield projects Tech driven environment - most recent versions/frameworks of C# used daily Skills/Experience Strong knowledge of C# STEM degree - strong computer science fundamentals (Preferred ...

Title: C# Developer - Leading Trading Firm - Up to £100k + Bonus + Package Client: Elite FinTech Firm Experience Level: 2+ years' Salary: Up to £100k + Bonus + Package Location: London (Flexible Working) An elite fintech firm are searching for C# Developers to join a group … high performance tools - utilising cutting edge technology across a diverse range of greenfield projects Tech driven environment - most recent versions/frameworks of C# used daily Skills/Experience Strong knowledge of C# STEM degree - strong computer science fundamentals (Preferred ...

C# Developer – Investment Banking (6-Month Contract) Location: London (50% Hybrid) Contract: 6 months Day Rate: Inside IR35 (Open) Our client , a leading investment bank, is seeking an experienced C# Developers to join their Global Markets e-Trading technology team. You will contribute to the development … Rates & FX Pricing Platform used globally for market building and quote formation. Accountabilities Develop distributed application services primarily in C# . Collaborate with developers, traders, and quants on application design and functionality. Ensure compliance with bank policies and standards during development and deployment. Conduct functional and non-functional testing ...

C# Developer – Investment Banking (6-Month Contract) Location: London (50% Hybrid) Contract: 6 months Day Rate: Inside IR35 (Open) Our client , a leading investment bank, is seeking an experienced C# Developers to join their Global Markets e-Trading technology team. You will contribute to the development … Rates & FX Pricing Platform used globally for market building and quote formation. Accountabilities Develop distributed application services primarily in C# . Collaborate with developers, traders, and quants on application design and functionality. Ensure compliance with bank policies and standards during development and deployment. Conduct functional and non-functional testing ...

Role Type : Perm Title – Junior C# Engineer Client – Established Financial Institution Salary - Up to £80,000 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 Junior C# Developer … 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 ...

Role Type : Perm Title – Junior C# Engineer Client – Established Financial Institution Salary - Up to £80,000 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 Junior C# Developer … 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 ...

partnered with a leading fixed income hedge fund in London seeking a talented C# Developer to join their front-office technology team. The fund has a strong and consistent performance track record and has invested heavily in its quant and tech capabilities as part of a wider … team multiple times so are able to go into detail regarding set up of the team and role The team primarily uses C# for core systems and Python within quant and data teams. C# and .Net experience and knowledge are essential for this role, but the fund will ...

partnered with a leading fixed income hedge fund in London seeking a talented C# Developer to join their front-office technology team. The fund has a strong and consistent performance track record and has invested heavily in its quant and tech capabilities as part of a wider … team multiple times so are able to go into detail regarding set up of the team and role The team primarily uses C# for core systems and Python within quant and data teams. C# and .Net experience and knowledge are essential for this role, but the fund will ...

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 … 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 ...

Senior Front Office Developer | Commodities & Energy Trading | C# .NET | Azure | 110k | London (Hybrid) We are looking for a Senior Front Office Developer to join a high-performing trading technology team in London, focused on commodities and energy markets . This is a hands-on role … front office decision-making , shaping how trading desks respond to market events and price risk. This is a hands-on opportunity to work with C#/.NET, Azure, SQL, and modern front-end technologies while contributing to a fast-paced, high-impact trading environment. You’ll be part ...

Senior Front Office Developer | Commodities & Energy Trading | C# .NET | Azure | 110k | London (Hybrid) We are looking for a Senior Front Office Developer to join a high-performing trading technology team in London, focused on commodities and energy markets . This is a hands-on role … front office decision-making , shaping how trading desks respond to market events and price risk. This is a hands-on opportunity to work with C#/.NET, Azure, SQL, and modern front-end technologies while contributing to a fast-paced, high-impact trading environment. You’ll be part ...

Leading Engineering Team at an Elite Financial Institution A top-tier FinTech firm is growing its elite engineering team and is seeking exceptional C# Engineers to help drive innovation in a fast-paced, technology-first environment. 🌟 What Makes This Opportunity Stand Out? Engineering-Driven Culture – Collaborate with top minds … London-based office. 🧠 Your Role Design, build, and optimize high-performance, low-latency systems for real-time financial applications. Develop scalable, efficient software using C#/.NET, with hands-on involvement in architecture and system design. Partner with Front Office, DevOps, and Quant teams to deliver robust solutions. Explore ...

will develop and consolidate systems, write software, guide a team of developers, and take ownership of several critical platforms. This includes an in‐house C# PnL and Risk system that performs real‐time portfolio valuation, alongside other components that will be integrated into a cohesive, modernised core platform. … date) accounting reconciliations Particular interest in candidates with Fixed Income and Rates experience Technical Skills Strong computer science fundamentals Hands‐on development experience in: C# and .NET (essential for this role) Python within quant or data environments The client will also consider exceptional engineers from other OOP backgrounds such ...

will develop and consolidate systems, write software, guide a team of developers, and take ownership of several critical platforms. This includes an in‐house C# PnL and Risk system that performs real‐time portfolio valuation, alongside other components that will be integrated into a cohesive, modernised core platform. … date) accounting reconciliations Particular interest in candidates with Fixed Income and Rates experience Technical Skills Strong computer science fundamentals Hands‐on development experience in: C# and .NET (essential for this role) Python within quant or data environments The client will also consider exceptional engineers from other OOP backgrounds such ...

C#, .NET, .NET Core, SQL Server, T-SQL, Entity, Azure, App Services, Azure Service Bus, Event-driven architecture, API's, CI/CD, DevOps. We have 2 great permanent job opportunities to join our client in early 2026. A degree in computing, software engineering or computer science would ...

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 … 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 ...