21 of 21 C# .NET Developer Jobs in the UK

Full Stack .NET Developer (C#, ASP.NET Core) Oxfordshire/Hybrid (1 day per week in office) Easily commutable from Oxford, Milton Keynes, Birmingham and London (direct rail) £40,000 to £50,000 plus great benefits. How often do you get to rewrite a whole product … over the next few years, and this role sits right in the middle of that work. You will be building the new product in C# and ASP.NET Core: real greenfield code on one side, a live system with real users on the other, and the job of moving ...

C# .NET Software Developer – FX and Fixed Income (London) Location: City of London, England, United Kingdom. Salary: £80,000 – £100,000. Responsibilities Re‐architect and build the in‐house middle office platform and integrate with a new trading platform. Develop pricing toolsets. Integrate to external … pricing APIs. Maintain the company's daily operation on the existing platforms. Required Skills 3–5 years of experience with Microsoft web technologies (C#, .NET Core MVC). Relational database experience (SQL Server). Ability to build relationships with stakeholders (sales, brokers, middle office, external vendors). ...

Principal C# Developer/Engineer (C# .Net AWS Python) London/WFH to £120k Would you like to join a growing and profitable scale-up that is viewed as a leading FinTech disruptor in a senior role that will allow you a great deal … influence and progression? As a Principal C# Developer you will architect and build highly performant and scalable solutions using the Microsoft tech stack and SOLID design principles, collaborating with cross functional Agile project teams in 2 week Sprints, you'll be an advocate of best practice ...

Engineer/Software Developer, C# .NET, Reading, £450 day rate, Outside IR35, COR7631 We're looking for an experienced AI Engineer/Software Developer to join a long-term contract with an initial 3-month term and a strong likelihood of extension … rate of up to £450, outside IR35. As an AI Engineer/Software Developer, you'll be responsible for developing software using C# and .NET while leveraging AI-powered tools throughout the software development lifecycle. You'll be someone who naturally incorporates AI into ...

Senior C#/.NET Developer | Risk & Securities Lending Location: London (Hybrid) Contract Duration: 6 Months Industry: Financial Services About the Opportunity Are you a seasoned C# engineer with a deep understanding of financial markets? We are seeking an experienced Senior C#/.NET … will deliver scalable, robust solutions in a fast-paced, regulated environment. What You Will Do System Development: Design, build, and maintain high-performance C#/.NET applications supporting Risk and Securities Lending workflows. API Integration: Build and consume RESTful APIs to seamlessly connect complex upstream and downstream ...

Principal Backend Developer (C#/.NET) The Opportunity This is a career-defining role for a Principal Backend Developer who wants to be at the forefront of a growing SaaS organisation. You'll be joining a company that's scaling rapidly, building innovative … proof. Working closely with product owners, testers, and front-end teams, you'll bring engineering excellence into every decision. With a stack centred on C#, .NET, cloud services, and automation frameworks, you'll be both hands-on in coding and guiding others to deliver their best work. ...

Senior C# Developer Based at client locations, working remotely, or based in our Godalming or Milton Keynes offices. Salary Negotiable, DoE, plus company benefits. Due to the nature of this position, you must be willing and eligible to achieve a minimum of SC clearance. To be eligible … help the government monitor and reduce greenhouse gas emissions from commercial transport Role Summary Triad Group Plc is seeking a skilled and experienced Senior C# Developer to join our dynamic team. As a Senior Developer, you will be responsible for designing, developing, and maintaining software ...

C#/.NET Developer Salary: £40,000 to £65,000, depending on experience Location: Aberdeen, ideally hybrid, with flexibility depending on the candidate’s location Permanent We are recruiting for a global software business that develops real-time data platforms for the energy industry. … product development and improvements to established software platforms. The role You will be responsible for: Developing and maintaining backend applications using C# and .NET Designing and supporting APIs and integration services Working with SQL Server or PostgreSQL Building event-driven and message-based systems Writing clean, maintainable ...

input towards best practice for the future. The role Involves: Designing, developing, testing and maintaining business applications, web portals, APIs and internal systems using C# and .NET technologies. Analyse business requirements and work directly with users to design practical technical solutions that improve efficiency and support business … applications. Contribute to the maintenance and support of the Company's IT systems and technology infrastructure where required. Essential: Commercial experience developing applications using C# and .NET (.NET Core/.NET 8+ preferred). IIS, Windows authentication, deployment Experience designing, developing and supporting ...

Client Server Ltd. in London is seeking a Principal C# Developer to shape architecture and deliver scalable solutions using C#, .NET, AWS and Python. You will work with cross-functional Agile teams, champion SOLID design, and drive AI initiatives such as chat bots. ...

C#/.NET Core/MVC/ASP.NET Developer – Contractor Location: Office Based, Manchester, M32 0FP Hours: Full Time – 6 Month Contract Salary: £45,000 per annum pro rata Crystal Ball is a Multi-Award-Winning vehicle tracking and lone worker service provider based … entire UK. The Crystal Ball system comprises of mobile phone/tablet client software (all major platforms) as well as scalable server-side architecture (C#/.NET Core/MVC/ASP.Net/SQL Server) and is developed and maintained entirely in-house and we are looking ...

Principal Software Developer, AI Integration, C#, £550 day rate, Outside IR35, Reading, COR7630 We're looking for an experienced Principal Software Developer to join a long-term contract with an initial 3-month term and a strong likelihood of extension up to 18 months. This … development lifecycle, improving productivity and modernising engineering practices. What's required of the Principal Software Developer? Strong commercial experience developing software with C# and .NET Experience leading or supporting the adoption of AI within a software development team Knowledge of AI-assisted development tools, such ...

Role: Senior Developer (C#/.NET) Location: London (Hybrid) Rate: Up To £800 Per Day The role An exciting opportunity has arisen for an experienced Senior .NET Technical Lead to join a high-performing technology team delivering business-critical enterprise applications. This … platforms. Collaborate with technical and business stakeholders to deliver complex change programmes from design through to production. Requirements Extensive commercial experience developing applications with C# and the .NET ecosystem, including modern .NET. Proven experience leading development teams or technical workstreams while maintaining a hands-on coding role. ...

C# .NET Software Developer with FX and Fixed Income Our Client is a niche boutique broker specialising in FX. They are looking to recruit a C# .NET Software Developer with at least 3 to 5 years proven track record … developing with C# .NET. The Client would like meet candidates ideally with some understanding Trading Floor projects to include Fixed Income, Risk Management, Swap Options and FX. You need to be resilient as you will be working closely with traders and developing financial trading systems so an understanding ...

fast-growing dynamic brokerage firm in London seeks a C# .NET Software Developer to re-architect and build their middle office platform. The role requires 3-5 years of experience with Microsoft web technologies and SQL Server, with a strong emphasis on relationship building ...

Triad Group Plc is seeking a Senior C# Developer to design, develop and maintain .NET Core applications, working across client sites or remotely, with options to base in Godalming or Milton Keynes. The role requires SC clearance eligibility and offers a pathway to secure government ...

Inside IR35) About the Role Join our dynamic team as a Senior Full Stack Developer, where your expertise in React JS and C# .NET Core will shine! We are looking for a tech-savvy professional with a passion for building scalable applications within the financial … Front-end: Strong proficiency in React.js, JavaScript/TypeScript, Redux/RTK, and modern UI patterns, develop framework is essential Back-end: Expertise in C# .NET Core, REST APIs, and microservices-based development is essential Python (pyspark): Experience with data pipelines and analytics is a plus. Power ...

About the Role C#, .NET, .NET Core, SQL Server, T-SQL, Entity, Azure, App Services, Azure Service Bus, Event-driven architecture, APIs, CI/CD, DevOps. We have 2 great permanent job opportunities to join our client in early 2026. Based in Kent offices ...

Fullstack with C# Dot net HTML Web Software Developer (IT) Company: Nexus Jobs Limited Location: Basildon, United Kingdom Field Successful Web Developers should have sound knowledge and experience in different programming applications. Core skills include C#, Asp.net/Core, JavaScript , HTML, CSS, MVC, and JSON. Role ...

About the Role C#.NET, .Net Core, TDD, Entity, MVC, SQL Server, Azure, React, Angular. We have a great opportunity that needs a capable full-stack developer, based in the Tunbridge Wells area of West Kent/East Sussex. As the role is hybrid, you do need … distance of Tunbridge Wells (Kent, East Sussex, West Sussex, Surrey). It is a permanent role only. What We're Looking For A developer/software engineer with 2-3 years+ .NET development experience Someone with full-stack experience, although our client will consider those with ...

About the Role C#.NET, .Net Core, TDD, Entity, MVC, SQL Server, Azure, Cloud, Azure Service Bus, RabbitMQ, Back End, Git, REST APIs. Start 2026 with one of these great new opportunities, based in Kent, UK. Permanent roles only. What We're Looking For A Computing Graduate with … months .NET from work, work placement or possibly self-study Someone with 2-3 years C#.Net seeking the next step in their career in the financial services sector .NET Developers wanting a career path Additional Information Candidates will ideally be living within commuting distance of Kent ...