1 to 25 of 53 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 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 a modern development environment with … 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/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 engine team you'll collaborate to … 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 ❯

C# Developer | Remote | Outside IR35 A client is looking for a skilled C# Developer to work within a development team as part of a internal project. You will also contribute to the development, customisation and integration of Microsoft dynamics 365. The successful Software Developer will work closely with senior leadership to create … clean and efficient code to provide software solutions for the business. Key responsibilities of the C# Developer: Develop clear and documented C#/.Net code Customize, extend, and support Microsoft Dynamics 365 Build integrations between Dynamics 365 Develop plugins, workflows and custom components within Dynamics Collaborate with cross-functional teams in a fully remote environment Participate … in code reviews to help define best practices Key experience of the C# Developer: Must have strong experience with developing in C#/.Net Must have hands-on Experience with Microsoft Dynamics 365 Familiarity with Dynamics customizations, plugins, workflows, and Power Platform Experience building REST APIs and integrating systems Cloud experience with Azure is beneficial Good More ❯

C# Developer | Remote | Outside IR35 A client is looking for a skilled C# Developer to work within a development team as part of a internal project. You will also contribute to the development, customisation and integration of Microsoft dynamics 365. The successful Software Developer will work closely with senior leadership to create … clean and efficient code to provide software solutions for the business. Key responsibilities of the C# Developer: Develop clear and documented C#/.Net code Customize, extend, and support Microsoft Dynamics 365 Build integrations between Dynamics 365 Develop plugins, workflows and custom components within Dynamics Collaborate with cross-functional teams in a fully remote environment Participate … in code reviews to help define best practices Key experience of the C# Developer: Must have strong experience with developing in C#/.Net Must have hands-on Experience with Microsoft Dynamics 365 Familiarity with Dynamics customizations, plugins, workflows, and Power Platform Experience building REST APIs and integrating systems Cloud experience with Azure is beneficial Good More ❯

C# Developer | Remote | Outside IR35 A client is looking for a skilled C# Developer to work within a development team as part of a internal project. You will also contribute to the development, customisation and integration of Microsoft dynamics 365. The successful Software Developer will work closely with senior leadership to create … clean and efficient code to provide software solutions for the business. Key responsibilities of the C# Developer: Develop clear and documented C#/.Net code Customize, extend, and support Microsoft Dynamics 365 Build integrations between Dynamics 365 Develop plugins, workflows and custom components within Dynamics Collaborate with cross-functional teams in a fully remote environment Participate … in code reviews to help define best practices Key experience of the C# Developer: Must have strong experience with developing in C#/.Net Must have hands-on Experience with Microsoft Dynamics 365 Familiarity with Dynamics customizations, plugins, workflows, and Power Platform Experience building REST APIs and integrating systems Cloud experience with Azure is beneficial Good 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 energy trading , this client … 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 energy trading , this client … 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 ❯

C# Developer/Software 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 C# Developer you'll collaborate with a … 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 … entrepreneurial with good business acumen, keen to take ownership and lead projects You're collaborative, enjoy problem solving and sharing ideas What's in it for you: As a C# Developer/Software Engineer you will earn a competitive package: Salary to £180k Significant bonus earning potential Fund performance share Personal training budget and mentoring Family friendly More ❯

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 and minimize the effect of security incidents, with the aim of … to minutes. Their solution is 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. 👀 Experience required as a C# Developer: Russell Group university 1st Class Degree in Computer Science (or related – Maths, Physics, Engineering) 2-6 years experience in C# (also open to Python & Go engineers) Strong computer science fundamentals End-to-end project experience (from design, to build, to deployment) 💡 What you’ll do: Write clean, scalable code in C# Drive innovation using More ❯

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 and minimize the effect of security incidents, with the aim of … to minutes. Their solution is 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. 👀 Experience required as a C# Developer: Russell Group university 1st Class Degree in Computer Science (or related – Maths, Physics, Engineering) 2-6 years experience in C# (also open to Python & Go engineers) Strong computer science fundamentals End-to-end project experience (from design, to build, to deployment) 💡 What you’ll do: Write clean, scalable code in C# Drive innovation using More ❯

Senior C# Developer - Commodities Trading - Outside IR35 Exciting opportunity for an experienced senior developer to build on their experience in Commodities or similar trading development role in this successful Commodities Trading company. £750 - 800 per day Outside IR35 The Senior C# Developer will have significant prior experience as a Senior Software Engineer …/Senior Developer working as C# Developer in a Commodities trading environment where they will have gained knowledge of the full trade life-cycle and feel comfortable speaking directly to traders and senior stakeholders in the business as well as senior technical colleagues such as architects. Central London location, with Hybrid working expected. Very strong … core skills in C# are expected Good knowledge of Commodities Trading is also required. Please apply now if your curious to learn more, for a confidential discussion about the role and company Carbon60, Lorien & SRG - The Impellam Group STEM Portfolio are acting as an Employment Business in relation to this vacancy. More ❯

C# DEVELOPER Commodities Trading firm is looking to grow their business and are hiring a Senior .NET Developer due to significant growth across their Front Office team. This is an extremely rare opportunity to break into the world of high-finance, trading and few and far between. £140-175k package This is an experienced … role within the team and the C# Developer will be expected to understand complex technical solutions and deliver in an Agile/SCRUM/Kanban environment. Requirements: C# - ESSENTIAL FRONT-END - VUE or similar - preferred AZURE - preferred TRADING - preferred The role is hybrid working, 2 days in lovely central London offices. Free cooked or contintal breakfast More ❯

religious beliefs, sexual orientations, gender identities, and more. We do this by showcasing their talents, skills, and unique experience in an inclusive environment that helps them thrive. Job Title : C# Developer Contract : Initial 6-Month Contract Location : London - 3 days a week in office Rate : £415 Are you a passionate C# Developer looking to … applications using the MS .NET platform. If you thrive on challenges and enjoy collaborating with various teams, we want to hear from you! What You'll Do: As a C# Developer, you will play a key role in the development and support of essential business applications. Your main responsibilities will include: Understanding Business Needs: Engage with stakeholders … C#.NET, interfacing with Oracle and SQL Server databases. Quality Assurance: Conduct unit testing and ensure quality at every stage of development. Support Existing Applications: Provide ongoing support for current C# and .NET applications, ensuring optimal functionality. Collaboration: Work closely with the IT department to maintain the environments where applications run. Additional Responsibilities: Define necessary database objects and liaise with More ❯

religious beliefs, sexual orientations, gender identities, and more. We do this by showcasing their talents, skills, and unique experience in an inclusive environment that helps them thrive. Job Title : C# Developer Contract : Initial 6-Month Contract Location : London - 3 days a week in office Rate : £415 Are you a passionate C# Developer looking to … applications using the MS .NET platform. If you thrive on challenges and enjoy collaborating with various teams, we want to hear from you! What You'll Do: As a C# Developer, you will play a key role in the development and support of essential business applications. Your main responsibilities will include: Understanding Business Needs: Engage with stakeholders … C#.NET, interfacing with Oracle and SQL Server databases. Quality Assurance: Conduct unit testing and ensure quality at every stage of development. Support Existing Applications: Provide ongoing support for current C# and .NET applications, ensuring optimal functionality. Collaboration: Work closely with the IT department to maintain the environments where applications run. Additional Responsibilities: Define necessary database objects and liaise with More ❯

C# Developer (Contract) – Investment Bank - Mid-Level/AVP Location: London (4 days in office) Contract: 6 Months Rate: £600–£800 per day Team: EMEA Markets Engineering We are supporting a leading global investment bank in their search for a mid-level C# Developer (Contract) to join the EMEA Markets Engineering team. This is … on the development side than operations, while understanding how these systems are managed in production the role includes: Maintaining and enhancing front-office pricing and risk systems built in C# Collaborating with quantitative analysts and traders to understand requirements and deliver effective solutions Troubleshooting and resolving production issues, ensuring smooth system operation Working with grid and cloud-based platforms … rather than leading large greenfield projects. Essential Experience: 4–7+ years of experience in quantitative development or technical roles supporting trading/risk systems Hands-on development experience with C# Understanding of derivatives, pricing, and risk concepts Exposure to front-office/trading environments in a financial institution Experience maintaining or supporting production systems (DevOps-lite, more dev than More ❯

C# Developer (Contract) – Investment Bank - Mid-Level/AVP Location: London (4 days in office) Contract: 6 Months Rate: £600–£800 per day Team: EMEA Markets Engineering We are supporting a leading global investment bank in their search for a mid-level C# Developer (Contract) to join the EMEA Markets Engineering team. This is … on the development side than operations, while understanding how these systems are managed in production the role includes: Maintaining and enhancing front-office pricing and risk systems built in C# Collaborating with quantitative analysts and traders to understand requirements and deliver effective solutions Troubleshooting and resolving production issues, ensuring smooth system operation Working with grid and cloud-based platforms … rather than leading large greenfield projects. Essential Experience: 4–7+ years of experience in quantitative development or technical roles supporting trading/risk systems Hands-on development experience with C# Understanding of derivatives, pricing, and risk concepts Exposure to front-office/trading environments in a financial institution Experience maintaining or supporting production systems (DevOps-lite, more dev than More ❯

C# Developer Remote Outside IR35 A client is looking for a skilled C# Developer to work within a development team as part of a internal project. You will also contribute to the development, customisation and integration of Microsoft dynamics 365. The successful Software Developer will work closely with senior leadership to create More ❯

C# Developer/Software 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 C# Developer you'll collaborate with a More ❯

C# Developer/Software 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 C# Developer you'll collaborate with a 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 expanding their team to … 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 this Senior 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 expanding their team to … 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 this Senior More ❯

C# Developer (.Net) Location: Canary Wharf Hybrid: 3 days onsite per week Rate: £415 per day (Inside IR35) Duration: 6 months initial contract with potential extension up to 2 years with a Permanent conversion option Positions Available: 13 positions Industry: Financial services Interview Process: 2 rounds of interview - Face-to-face interview only, and Technical assessment - Home … behalf of our client, a leading financial services company, within their Business Intelligence development team. The role focuses on developing and supporting business applications using the MS .NET platform (C#, Visual Studio) and working with both Oracle and SQL Server databases. You’ll be joining a collaborative team that delivers key business solutions across various environments. Key Responsibilities: Design … develop, and maintain business applications using Visual C# .NET with Oracle and SQL Server databases Provide ongoing support for existing C# and .NET applications, including troubleshooting and implementing solutions Write and optimise T-SQL and PL/SQL scripts for data analysis and reporting requirements Collaborate with Database Administrators, Technical Support, and Infrastructure teams across London and New More ❯

C# Developer (.Net) Location: Canary Wharf Hybrid: 3 days onsite per week Rate: £415 per day (Inside IR35) Duration: 6 months initial contract with potential extension up to 2 years with a Permanent conversion option Positions Available: 13 positions Industry: Financial services Interview Process: 2 rounds of interview - Face-to-face interview only, and Technical assessment - Home … behalf of our client, a leading financial services company, within their Business Intelligence development team. The role focuses on developing and supporting business applications using the MS .NET platform (C#, Visual Studio) and working with both Oracle and SQL Server databases. You’ll be joining a collaborative team that delivers key business solutions across various environments. Key Responsibilities: Design … develop, and maintain business applications using Visual C# .NET with Oracle and SQL Server databases Provide ongoing support for existing C# and .NET applications, including troubleshooting and implementing solutions Write and optimise T-SQL and PL/SQL scripts for data analysis and reporting requirements Collaborate with Database Administrators, Technical Support, and Infrastructure teams across London and New More ❯

This is a newly created position for a Senior .Net Software Developer based in Central London, paying up to £95,000. PLEASE … NOTE – this role is 5 days a week in the Oxford Street area of Central London. To be considered for this position you will be a highly experienced Lead C# Software Developer with solid Azure cloud experience. The ideal Senor C# .Net Developer will have previous experience with: C# & .Net Core React.js &/… and dedication my client is offering a salary of £95,000. If you are an experienced Senior Software Developer or Lead Software Developer with impressive C# skills and you are looking for a new challenge, please send me your CV immediately. More ❯

Now 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 Developer to work alongside 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 to performance optimization Gain exposure to financial markets, trading systems, and quantitative research 🧠 What … We’re Looking For Strong programming skills in C#/.NET Solid grasp of computer science fundamentals (data structures, algorithms, design patterns) Analytical mindset with a genuine interest in finance and quantitative methods Bachelor’s or Master’s degree in Computer Science, Mathematics, Engineering, or related field 🌟 Why Join Us Direct mentorship from experienced quantitative developers Opportunity to see More ❯