1 to 25 of 30 C# Developer Jobs in London

C# Developer/Software Engineer (C# .Net SQL API) London onsite to £90k Are you an ambitious and motivated C# Developer looking for an opportunity to progress your career, working on complex and interesting systems? You could joining a global sports trading firm … based on personal performance (10-25%) Professional development Pension Health Insurance Gym membership Social events, free fruit, snacks, coffee etc. Your role: As a C# Developer within the trading engine team you'll collaborate to design and develop real-time trading systems, you'll often be collaborating ...

C# Developer/Backend Software Engineer C# .Net AWS (Junior - Mid) London to £80k Are you a bright, ambitious C# Developer who enjoys collaborating and working on complex systems with cutting edge technology? You could be progressing your career at a highly profitable … that invests in sports betting markets whilst enjoying a range of perks and benefits including hybrid working and a sociable team environment. As a C# Developer you'll join a cross functional Agile product team responsible for high-value business critical betting execution systems. ...

C# Developer/Backend Software Engineer C# .Net AWS (Junior - Mid) London to £80k Are you a bright, ambitious C# Developer who enjoys collaborating and working on complex systems with cutting edge technology? You could be progressing your career at a highly profitable … that invests in sports betting markets whilst enjoying a range of perks and benefits including hybrid working and a sociable team environment. As a C# Developer you'll join a cross functional Agile product team responsible for high-value business critical betting execution systems. ...

C# Developer | Remote | Outside IR35 A client is seeking an experienced C# Developer to join their development team and support a key internal initiative. In this role, you'll also play a major part in configuring, enhancing, and integrating Microsoft Dynamics 365 within … collaborate closely with senior stakeholders to deliver clean, efficient, and reliable code that underpins critical business applications. Responsibilities: Produce well-structured and clearly documented C#/.NET code. Configure, customise, and maintain Microsoft Dynamics 365. Build and support integrations across Dynamics 365 and other systems. Develop plugins, workflows ...

C# Developer/Backend Software Engineer C# .Net AWS (Junior - Mid) London to £80k Are you a bright, ambitious C# Developer who enjoys collaborating and working on complex systems with cutting edge technology? You could be progressing your career at a highly profitable ...

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 ...

C# Developer (Government) - Remote - £330.00 Per Day Inside IR35 My government client are seeking a C#/.NET Developer with proven expertise in building modern, cloud-native solutions. This is a high-impact position where you will lead the development of .NET applications using … C# and the latest frameworks (.NET 6/7/8), while shaping the technical direction of mission-critical projects. Must have Government background. Required Skills & Experience: Development of .NET applications using C#, .NET 6/7/8, and modern frameworks. Build cloud-native microservices hosted ...

C# Developer (Government) - Remote - £330.00 Per Day Inside IR35 My government client are seeking a C#/.NET Developer with proven expertise in building modern, cloud-native solutions. This is a high-impact position where you will lead the development of .NET applications using … C# and the latest frameworks (.NET 6/7/8), while shaping the technical direction of mission-critical projects. Must have Government background. Required Skills & Experience: Development of .NET applications using C#, .NET 6/7/8, and modern frameworks. Build cloud-native microservices hosted ...

C# .Net Developer - 3 months+ - Hybrid - Rate circa £500-£650 We are looking for an experienced C# .Net Developer with experience of GenAI to join a team developing cutting edge AI solutions who will either have current and active SC clearance or have … experts. You will work on projects developing GenAI capabilities and provide guidance to non-technical people. What you will bring to the team Solid C# .Net experience Fine-tune Large Language Models (LLMs) and other generative architectures. Optimise pre-trained models (OpenAI, Anthropic, or open-source LLMs) for business ...

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 ...

C# Developer - Risk IT - sought by leading investment bank based in London - Contract - Hybrid *inside iR35* What You'll Be Doing Designing and developing enterprise-grade solutions in an Agile team. Building and maintaining middleware services using C# , REST APIs , FIX messaging , XML , and Microservices . … Bring A strong academic background in Computer Science, Engineering, or a related field. Proven experience in SOLID Principles/Design patterns Deep knowledge of C# .NET , RESTful services , and microservice architecture . Hands-on experience with FIX messaging , XML , AMQ , and ideally nHibernate , OData , and TDD . Excellent communication ...

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 ...

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 ...

Global bank based in Canary Wharf. Role - C# Developer - Desktop Applications Duration - 6 months with likely extension Rate - £415 p/d (inside IR35) Location - Hybrid/Canary Wharf Tech Stack C# WPF Winforms SQL Oracle Tasks Tasks range from understanding business requirements, designing application structures ...

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 ...

C# Oracle PL/SQL Developer for Tier 1 bank in Canary Wharf Role - C#, Oracle, PL/SQL Developer Duration - 6 months with very likely extension Location - Hybrid/Canary Wharf - 3 days per week in a Canary Wharf office Rate … Inside IR35) Tech Stack C# Oracle PL/SQL Data Lineage Documentation Role Primary responsibility will be to reverse-engineer complex source code to document data flows and transformations. You will collaborate closely with application teams, DBAs, and data governance specialists to ensure that lineage artifacts are complete ...

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 ...

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 ...