1 to 25 of 62 C# Developer Jobs in London

Senior C# Developer/Engineer (C# .Net Core React) London/WFH to £80k Are you a skilled C# Developer looking to work on complex and interesting systems with continual learning and self development opportunities You could be progressing your career at in a senior, hands-on role 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 … 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 ❯

and is happy with 99% remote working. To be considered for this position, you will be a highly experienced MS full-stack .Net software developer. Skills will include Azure, C#, ASP.Net, .Net Core, MVC, SQL Server, SSRS, SSIS, PostgreSQL, Entity Framework, HTML, CSS, JavaScript, JQuery, and either Angular, React or Node (or similar). The successful candidate will have … client is offering a salary of circa £60,000 and the chance to work on exciting customer-driven projects using the latest development stack. If you are an experienced C# ASP.Net Full Stack Software Developer and you are looking for a new challenge, please send me your CV immediately More ❯

/50 between back and front end design. This role is primarily home-based and may occasionally require out-of-hours support. Key Responsibilities Design and develop applications using C#, .NET Core, and React. Follow and help define software development standards and best practices. Work with test-driven development, automated testing, and CI/CD pipelines. Support ongoing operations … contribute to various development projects. Collaborate with third-party software providers throughout the development lifecycle. Provide technical guidance and mentorship to less experienced developers. Required Skills Strong experience with C#, .NET Core, Azure, and test automation. Proficiency in JavaScript and a modern front-end framework (React preferred). Familiarity with microservices, containerisation, and site reliability engineering. Solid understanding of More ❯

/50 between back and front end design. This role is primarily home-based and may occasionally require out-of-hours support. Key Responsibilities Design and develop applications using C#, .NET Core, and React. Follow and help define software development standards and best practices. Work with test-driven development, automated testing, and CI/CD pipelines. Support ongoing operations … contribute to various development projects. Collaborate with third-party software providers throughout the development lifecycle. Provide technical guidance and mentorship to less experienced developers. Required Skills Strong experience with C#, .NET Core, Azure, and test automation. Proficiency in JavaScript and a modern front-end framework (React preferred). Familiarity with microservices, containerization, and site reliability engineering. Solid understanding of More ❯

Full Stack Software Developer, C# .NET, Remote, £425 day rate, Outside IR35, COR7283 We’ve looking for an experienced Full Stack Software Developer for a contract role available immediately, lasting until November. This role is fully remote and outside IR35, offering a day rate of up to £425. Candidates must live and be eligible to … work in the UK. As a Full Stack Software Developer, you will be responsible for developing and maintaining software solutions using C# and .NET Core, ensuring high-quality code and adherence to best practices. What’s required of the Full Stack Software Developer? Proven experience developing full stack applications with C# and .NET Core … user interface design What Next? If you’re an experienced Full Stack Software Developer available immediately, apply today to learn more! Full Stack Software Developer, C# .NET, Remote, £425 day rate, Outside IR35, COR7283 Corriculo Ltd acts as an employment agency and an employment business. #AS More ❯

Software Developer with Full Stack C# and SQL Server Our Client is an international company in the media industry. They are looking to recruit an additional Software Engineer/Developer with full stack software development experience. Must have at least 2 to 4 years of hands-on software development covering both front and backend development. … storage, security, artificial intelligence, natural language processing, UI design and mobile would be very useful. The Client would like to see experience of the following skills: Languages: HTML5, CSS3, C#, Javascript ( is not main focus but knowledge is good) Frameworks: ASP.Net 4-6, MVC, Ajax, JQuery, HTML, Bootstrap and Knockout (required), Angular (optional) DB's: Ms Sql Server … and photobooks in the best layout order Continuous optimization and debugging when adjustments are made to our webstores Design and implementation of next-generation web applications using Java and C# that can handle web-scale volumes of traffic Summary Do you have at least 2 years full stack development experience with a focus on front end development? Have you More ❯

Senior/Lead Developer (C#/Python) - TOP Hedge Fund! Are you looking for a real and meaningful challenge? Do you enjoy solving problems? Are you ambitious and looking for autonomy and influence Central London - Hybrid working (3 days in the office and 2 days in the office) You will be joining a small but growing hedge … fund which is stable. A high-performing hedge fund is hiring a Senior/Lead Developer t o help design, build, and scale cutting-edge trading and operational systems. You'll work closely with traders, researchers, and stakeholders to deliver systems that are reliable, high-performing, and secure. Key Responsibilities Depending on your experience level, your role will … of engineers and technical professionals Oversee cloud adoption and security architecture Present complex tech solutions to senior management Skills & Experience Required 5-7+ years in hands-on development (C# and/or Python) Strong background in hedge fund, asset management , or financial markets Solid DevOps skills: CI/CD, containerisation, source control (e.g. Git) ETL experience with financial More ❯

Senior C# Developer | FinTech | London (Hybrid) | Permanent We are proud to be supporting a leading financial technology firm in the UK in their search for an exceptional Senior C# Developer to join their high-performing engineering team. This is a fantastic opportunity for an experienced developer to take a leading role in … designing and building cutting-edge systems that power asset management, trading, and investment operations across global financial markets. Key Responsibilities: Design, develop, and maintain high-performance backend systems using C# and .NET (Core and Framework) Architect scalable, secure, and modular applications for the financial domain Collaborate closely with cross-functional teams including Quant Developers, DevOps, and Product Managers Drive … and enforce coding best practices Optimize system performance, reliability, and scalability Participate in rigorous code reviews and contribute to continuous improvement Key Requirements: 10+ years of professional experience in C#/.NET development Strong grasp of OOP, multithreading, and asynchronous programming Proven background in building high-performance, low-latency systems (preferably in financial services) Deep understanding of software architecture More ❯

Senior C# Developer | FinTech | London (Hybrid) | Permanent We are proud to be supporting a leading financial technology firm in the UK in their search for an exceptional Senior C# Developer to join their high-performing engineering team. This is a fantastic opportunity for an experienced developer to take a leading role in … designing and building cutting-edge systems that power asset management, trading, and investment operations across global financial markets. Key Responsibilities: Design, develop, and maintain high-performance backend systems using C# and .NET (Core and Framework) Architect scalable, secure, and modular applications for the financial domain Collaborate closely with cross-functional teams including Quant Developers, DevOps, and Product Managers Drive … and enforce coding best practices Optimize system performance, reliability, and scalability Participate in rigorous code reviews and contribute to continuous improvement Key Requirements: 10+ years of professional experience in C#/.NET development Strong grasp of OOP, multithreading, and asynchronous programming Proven background in building high-performance, low-latency systems (preferably in financial services) Deep understanding of software architecture More ❯

Senior C# Developer/Software Engineer (C# .Net AWS Python) London/WFH to £100k Would you like to join a growing and profitable start-up that is viewed as a leading FinTech disruptor in a senior role that will allow you a great deal of influence and progression? As a Senior C# Developer … from home three days a week. About you: You are an experienced Software Developer/Engineer with a strong knowledge of modern best practice You have strong C# backend development skills, ideally also Python coding skills You have a good knowledge of AWS You have experience of working on highly scalable systems You have a strong knowledge … and problem solving skills alongside organisation and planning abilities You have business acumen and advanced communication/stakeholder management skills What's in it for you: As a Senior C# Developer/Software Engineer you will earn a competitive package including: Salary to £100k Bonus (c20%) Pension (5% employer contribution) 25 days holiday (increasing to 27 after More ❯

Senior C# Developer/Software Engineer (Windows Desktop Trading Systems) London to £140k Are you a Senior C# Developer with strong Windows desktop development skills combined with banking/financial services experience? You could be progressing your career at a Hedge Fund with over $10 billion under management. As a Senior C# Developer … support trading, operations, finance, compliance and investor relations, optimising system performance to ensure efficient real-time data processing, reporting and automation of operational workflows. You'll focus on building C#, WinForms, WPF desktop applications and design and implementation of scalable, service orientated architectures (SOA) but will also gain exposure to web applications using React and/or Angular. This … flexibility to work from home once a week; there's a friendly and collaborative environment with casual dress code and a range of facilities. About you: You have strong C# desktop development experience on Windows within a banking or financial services environment You have a strong knowledge of SQL databases You have a good understanding of asset classes e.g. More ❯

Senior C# Developer/Software Engineer (Windows Desktop Trading Systems) London to £140k Are you a Senior C# Developer with strong Windows desktop development skills combined with banking/financial services experience? You could be progressing your career at a Hedge Fund with over $10 billion under management. As a Senior C# Developer … support trading, operations, finance, compliance and investor relations, optimising system performance to ensure efficient real-time data processing, reporting and automation of operational workflows. You'll focus on building C#, WinForms, WPF desktop applications and design and implementation of scalable, service orientated architectures (SOA) but will also gain exposure to web applications using React and/or Angular. This … flexibility to work from home once a week; there's a friendly and collaborative environment with casual dress code and a range of facilities. About you: You have strong C# desktop development experience on Windows within a banking or financial services environment You have a strong knowledge of SQL databases You have a good understanding of asset classes e.g. More ❯

.Net Developer/Software Engineer (C# TypeScript) London/WFH to £85k Would like to progress your career as a .Net Developer, working on a modern, web based, tech stack with continual learning and development opportunities as part of a diverse team? You could be joining a global FinTech consistently voted as a Top … you'll collaborate to design and develop new features and enhancements to the company's flagship web based trading product. You'll focus on backend systems using C# and TypeScript but will also have exposure to front end components in Angular and React within a TDD environment. Location/WFH: You can work from home most of … you can you enjoy a range of facilities including large kitchen, café, roof top bar, showers and all the latest kit to work on. About you: You have backend C# .Net, ASP.Net MCV application development skills You also have experience with TypeScript, Angular or React You have a good understanding of Docker for Containerisation You have a good knowledge More ❯

You will work as part of a collaborative technical team, delivering high-quality automation solutions to customers across various industry sectors. About You You are an experienced automation developer and automation enthusiast who enjoys building real-world solutions that make businesses more efficient. You are proactive, analytical, and comfortable managing the end-to-end lifecycle of automation projects … a startup-style environment where innovation, autonomy, and agility are core values. Key Responsibilities  Customer-Focused Automation Delivery o Work closely our customers to develop intelligent automation solutions using C#, Python, and RPA tools. o Engage in scoping and assessing business processes that could be automated, working directly with customer stakeholders to understand needs. o Identify opportunities to productise … available to attend quarterly London team meet-ups. o Work cross-functionally with Nexbotix’s project delivery, customer success, and support teams. Essential Skills  Technical Expertise: Strong experience with C#, .NET Core, Python, and full-stack development. Familiarity with Azure, RPA tools, and automation design is key.  Automation & AI: Experience with RPA platforms and ideally exposure to OCR and More ❯

You will work as part of a collaborative technical team, delivering high-quality automation solutions to customers across various industry sectors. About You You are an experienced automation developer and automation enthusiast who enjoys building real-world solutions that make businesses more efficient. You are proactive, analytical, and comfortable managing the end-to-end lifecycle of automation projects … a startup-style environment where innovation, autonomy, and agility are core values. Key Responsibilities  Customer-Focused Automation Delivery o Work closely our customers to develop intelligent automation solutions using C#, Python, and RPA tools. o Engage in scoping and assessing business processes that could be automated, working directly with customer stakeholders to understand needs. o Identify opportunities to productise … available to attend quarterly London team meet-ups. o Work cross-functionally with Nexbotix’s project delivery, customer success, and support teams. Essential Skills  Technical Expertise: Strong experience with C#, .NET Core, Python, and full-stack development. Familiarity with Azure, RPA tools, and automation design is key.  Automation & AI: Experience with RPA platforms and ideally exposure to OCR and More ❯

You will work as part of a collaborative technical team, delivering high-quality automation solutions to customers across various industry sectors. About You You are an experienced automation developer and automation enthusiast who enjoys building real-world solutions that make businesses more efficient. You are proactive, analytical, and comfortable managing the end-to-end lifecycle of automation projects … a startup-style environment where innovation, autonomy, and agility are core values. Key Responsibilities  Customer-Focused Automation Delivery o Work closely our customers to develop intelligent automation solutions using C#, Python, and RPA tools. o Engage in scoping and assessing business processes that could be automated, working directly with customer stakeholders to understand needs. o Identify opportunities to productise … available to attend quarterly London team meet-ups. o Work cross-functionally with Nexbotix’s project delivery, customer success, and support teams. Essential Skills  Technical Expertise: Strong experience with C#, .NET Core, Python, and full-stack development. Familiarity with Azure, RPA tools, and automation design is key.  Automation & AI: Experience with RPA platforms and ideally exposure to OCR and More ❯

C# DevOps Engineer Location: Hybrid (Hammersmith) – 2 days/week onsite Salary: £70,000 About the Role We’re looking for a passionate DevOps Engineer to join a dynamic digital team. In this role, you’ll support and manage production and non‐production environments across a digital estate and oversee deployment pipelines. You’ll work closely with developers, service More ❯

C# DevOps Engineer Location: Hybrid (Hammersmith) – 2 days/week onsite Salary: £70,000 About the Role We’re looking for a passionate DevOps Engineer to join a dynamic digital team. In this role, you’ll support and manage production and non‐production environments across a digital estate and oversee deployment pipelines. You’ll work closely with developers, service More ❯

Actively participate in code reviews, knowledge sharing, and continuous learning Requirements 7+ years of proven professional experience as a Software Engineer, with at least 3 years in .NET and C# 2+ years of experience in product companies (SaaS) 2 years of commercial experience with modern web frameworks like React/Angular/Vue Passion and strong skill for writing … clean, maintainable, and testable code and well-documented C# code Experience with writing and maintaining Unit tests and E2E tests Advanced experience with MongoDB Upper-intermediate or higher English proficiency Experience with usage of the LLM-based solutions in daily workflow (ChatGPT, CoPilot, JetBrains AI Assistant, etc). Understanding of vector databases, embeddings, and RAG implementations Strong problem-solving More ❯

About the Job C# Dot Net Developer with Classic ASP ?" Waterloo London We are looking to recruit a C# Dot Net Developer for a Client based at Waterloo London. You must have at least 1 to 3 years experience of software development with the following: Classic-ASP T-SQL jQuery HTML & CSS You will … advanced features, (including in other languages) and publish real-time results via an online reporting platform. Salary will depend on level of experience - £25-£30K for a junior developer and up to £40K with at least 5 years experience. Please send your CV to cv@nexusjobs.com in Word format, along with your salary expectations and availability. More ❯

Years of relevant experience 2+ years Education Level Bachelor's Degree About the Job Our Client is looking to recruit a C# .net Software Developer with SQL skills. The Client produces information for the Oil and Gas industry and you will be involved in helping their clients and team visualise and interact with the company’s research … data. Required Skills · .net 4, c# , asp.net · MS SQL (Working with and developing relational databases in SQL) · Stored procedures, Functions, SSIS · HTML,CSS · Web Services · Java script · Jquery, AJAX, XML Desirable Skills · GIS · Business Intelligent Tools eg. Logi,Tablae This is a full time position where our Client is seeking someone with about 3 to 5 years’ experience with … C# Dot Net with MS SQL Server software development. You will be involved in developing a reporting tool for clients to be able to login to and turn a query into a visual and interactive representation of the results. C# Dot Net development. Support modelling and forecasting processes work with the consulting and management teams to understand what More ❯

Role: Contract C# .NET Developer Domain: Commodities trading Project: Energy Trading & Risk Management (ETRM) systems Day rate: £700-800/d (inside IR35) Location: London (hybrid - 3 days per week) Contract: 6 months (strong extension scope) X4 Technology are partnered with a well-backed commodity trading firm in London, offering an exciting contract opportunity for an experienced … C# .NET Developer. In this role, you'll play a key role in evolving the firm's core Energy Trading & Risk Management (ETRM) platform - enhancing functionality, onboarding new products and integrating modern SaaS solutions for analytics, hedging, credit, regulatory reporting and more. You'll also drive improvements to customisation code, strengthen unit testing capabilities, contribute to a suite of … ETRM-adjacent tools (APIs, loaders, reports, data pipelines, BI tools) and support broader initiatives in test automation and CI/CD. Responsibilities of the Contract C# .NET Developer (Commodities) Creating new features within ETRM to facilitate company growth Building solutions for front office users (trade entry, exchange interfaces, STP, etc) Designing new bespoke views Customising ETRM user More ❯

Role: Contract C# .NET Developer Domain: Commodities trading Project: Energy Trading & Risk Management (ETRM) systems Day rate: £700-800/d (inside IR35) Location: London (hybrid - 3 days per week) Contract: 6 months (strong extension scope) X4 Technology are partnered with a well-backed commodity trading firm in London, offering an exciting contract opportunity for an experienced … C# .NET Developer. In this role, you'll play a key role in evolving the firm's core Energy Trading & Risk Management (ETRM) platform - enhancing functionality, onboarding new products and integrating modern SaaS solutions for analytics, hedging, credit, regulatory reporting and more. You'll also drive improvements to customisation code, strengthen unit testing capabilities, contribute to a suite of … ETRM-adjacent tools (APIs, loaders, reports, data pipelines, BI tools) and support broader initiatives in test automation and CI/CD. Responsibilities of the Contract C# .NET Developer (Commodities) Creating new features within ETRM to facilitate company growth Building solutions for front office users (trade entry, exchange interfaces, STP, etc) Designing new bespoke views Customising ETRM user More ❯

Senior C# Developer Bank London The Front office (Fixed Income) software development team requires an agile and versatile specialist and team player with extensive 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: Senior … Developer (software engineer) Technical stack C#.NET. Wider stack .Net, .Net Core, SQL Server Permanent role, salary £88,000- £110,000 Location: London City and home working hybrid Focus: Front office Fixed Income Role Summary Work closely with the Front Office (specifically within Fixed Income) to build and develop new amazing softwares. This role reports directly into the Head … within C#.NET & SQL Server This is a very strong team who have been building their front office team and have an excellent reputation Role requirements Core Development Languages covering C# .Net, .Net Core, & SQL Server Experience of Front Office trading systems (including low-touch e-trading platforms) is required Experience and understanding of a Fixed Income Banking is beneficial More ❯

Senior C# Developer Bank London The Front office (Fixed Income) software development team requires an agile and versatile specialist and team player with extensive 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: Senior … Developer (software engineer) Technical stack C#.NET. Wider stack .Net, .Net Core, SQL Server Permanent role, salary £88,000- £110,000 Location: London City and home working hybrid Focus: Front office Fixed Income Role Summary Work closely with the Front Office (specifically within Fixed Income) to build and develop new amazing softwares. This role reports directly into the Head … within C#.NET & SQL Server This is a very strong team who have been building their front office team and have an excellent reputation Role requirements Core Development Languages covering C# .Net, .Net Core, & SQL Server Experience of Front Office trading systems (including low-touch e-trading platforms) is required Experience and understanding of a Fixed Income Banking is beneficial More ❯