19 of 19 Permanent .NET Developer Jobs in South Wales

.NET Developer - Swansea (Tech stack: .NET Developer, .NET 9, C#, Blazor, Azure, JavaScript, HTML5, CSS3, Agile, Programmer, Full Stack Engineer, Architect, .NET Developer) Since 2006 our client's revolutionary marketing software platform has been helping businesses all over the world to attract, engage … and delight customers by delivering inbound experiences that are relevant, helpful, and personalized. Having recently launched in the UK, they looking to hire .NET Developer (ASP.NET, C#) to become a part of their ever growing family. They believe that individual .NET Developer are in the best … what should be created, and how it should be built. Within their setup those decisions are made by small teams of three or four .NET Developer who own each piece of their product. This autonomy allows them to deploy 200+ times each day. They believe that problems are More ❯

Senior .NET Developer Fully Remote (UK based) Paying £75,000 - £80,000 Oliver Bernard are partnered with a Software Development company in the Sustainability sector. They are looking for a Senior Backend Developer with at least 5 years experience writing scalable, performant and maintainable code. The ideal … candidate will have experience across C#, .NET, Rest APIs, AWS or Azure, DevOps and PostgreSQL. You would be working on an entirely greenfield product and have lots of ownership over the direction of the codebase. If you have worked in start up environments, and built products from the ground … UK to be considered. Visa sponsorship is not available for this role. Salary is paying £75k-£80k + benefits. If you are a Senior .NET Developer who is looking for a great work life balance, whilst having lots of ownership and a key say in the direction of More ❯

Senior .NET Developer Fully Remote (UK based) Paying £75,000 - £80,000 Oliver Bernard are partnered with a Software Development company in the Sustainability sector. They are looking for a Senior Backend Developer with at least 5 years experience writing scalable, performant and maintainable code. The ideal … candidate will have experience across C#, .NET, Rest APIs, AWS or Azure, DevOps and PostgreSQL. You would be working on an entirely greenfield product and have lots of ownership over the direction of the codebase. If you have worked in start up environments, and built products from the ground … UK to be considered. Visa sponsorship is not available for this role. Salary is paying £75k-£80k + benefits. If you are a Senior .NET Developer who is looking for a great work life balance, whilst having lots of ownership and a key say in the direction of More ❯

Lead .NET Developer – Hybrid/Staines - £90,000 - £110,000 plus package We are partnering with a rapidly growing, private equity-backed tech company that is delivering cutting-edge tax and regulatory software to an elite client base. With a team of approximately 140 and a strong, collaborative … culture, this organisation is known for innovation, reliability, and outstanding customer service They are now seeking an experienced Lead .NET Developer to work on their enterprise-grade, cloud-native SaaS product helping multinational organisations. Key Responsibilities: Own technical strategy Shape the technology roadmap Guide architecture & refactoring Champion code … quality Drive AI augmented What You Bring: Deep expertise in .NET, relational data modelling, and modern JavaScript/TypeScript SPA frameworks (Vue preferred). Extensive enterprise market background Leading successful projects and building scalable, reliable services on Azure Proven ability to design and evolve architectures across the spectrum—monoliths More ❯

Lead .NET Developer – Hybrid/Staines - £90,000 - £110,000 plus package We are partnering with a rapidly growing, private equity-backed tech company that is delivering cutting-edge tax and regulatory software to an elite client base. With a team of approximately 140 and a strong, collaborative … culture, this organisation is known for innovation, reliability, and outstanding customer service They are now seeking an experienced Lead .NET Developer to work on their enterprise-grade, cloud-native SaaS product helping multinational organisations. Key Responsibilities: Own technical strategy Shape the technology roadmap Guide architecture & refactoring Champion code … quality Drive AI augmented What You Bring: Deep expertise in .NET, relational data modelling, and modern JavaScript/TypeScript SPA frameworks (Vue preferred). Extensive enterprise market background Leading successful projects and building scalable, reliable services on Azure Proven ability to design and evolve architectures across the spectrum—monoliths More ❯

Senior Full Stack C# .NET DeveloperFully Remote (UK Residents Only) About WebX Systems At WebX, we specialise in technical publishing and content management solutions for the aerospace and defence sectors worldwide. Our flagship products— UltraCSDB®, UltraAuthorTM, UltraXMLTM , and UltraPortalTM —are used globally and combine proven legacy systems with cutting … journey to become the global leader in aerospace and defence content management. Role Overview We're looking for a proactive, experienced Senior Full Stack .NET Developer to help evolve our product suite. You’ll work across both legacy Windows desktop applications and modern web-based systems and help … native architecture. This role is perfect for someone who enjoys innovating within established environments while also driving forward new development. Technology Stack Legacy C#, .NET Framework, WinForms, WCF Client-Server Architecture, MS SQL Server Modern .NET 9, Blazor, Minimal APIs Entity Framework, Redis, RabbitMQ Aspire (.NET), Cloud More ❯

Senior Full Stack C# .NET DeveloperFully Remote (UK Residents Only) About WebX Systems At WebX, we specialise in technical publishing and content management solutions for the aerospace and defence sectors worldwide. Our flagship products— UltraCSDB®, UltraAuthorTM, UltraXMLTM , and UltraPortalTM —are used globally and combine proven legacy systems with cutting … journey to become the global leader in aerospace and defence content management. Role Overview We're looking for a proactive, experienced Senior Full Stack .NET Developer to help evolve our product suite. You’ll work across both legacy Windows desktop applications and modern web-based systems and help … native architecture. This role is perfect for someone who enjoys innovating within established environments while also driving forward new development. Technology Stack Legacy C#, .NET Framework, WinForms, WCF Client-Server Architecture, MS SQL Server Modern .NET 9, Blazor, Minimal APIs Entity Framework, Redis, RabbitMQ Aspire (.NET), Cloud More ❯

Senior Full Stack Developer - .NET, Blazor Fully remote working (UK based ) Salary paying £65,000-£70,000 Our client in the retail space are a market leader in providing warehousing, manufacturing and logistic services across the UK. This is a great opportunity to work on a migration piece … moving from ASP.NET MVC to modern Blazor as they look to roll out a new system. They are also undergoing a migration to .NET 9. They are looking for a Senior Full Stack Developer who has experience with .NET Framework/Core and Blazor. Tech Stack: C# … .NET Core, SQL, Blazor, Rest APIs, ASP.NET MVC, Azure, Entity Framework, Git, This is a fully remote role and you must be based in the UK in order to be considered. Visa sponsorship is not available for this role. Salary is paying £65,000-£70,000 Working hours: 9am More ❯

Senior Full Stack Developer - .NET, Blazor Fully remote working (UK based ) Salary paying £65,000-£70,000 Our client in the retail space are a market leader in providing warehousing, manufacturing and logistic services across the UK. This is a great opportunity to work on a migration piece … moving from ASP.NET MVC to modern Blazor as they look to roll out a new system. They are also undergoing a migration to .NET 9. They are looking for a Senior Full Stack Developer who has experience with .NET Framework/Core and Blazor. Tech Stack: C# … .NET Core, SQL, Blazor, Rest APIs, ASP.NET MVC, Azure, Entity Framework, Git, This is a fully remote role and you must be based in the UK in order to be considered. Visa sponsorship is not available for this role. Salary is paying £65,000-£70,000 Working hours: 9am More ❯

Senior .Net Developer (Azure) We are seeking a hands-on Senior developer to join a reputable fintech banking as a service organisation. You will be responsible for mentoring and providing continuous improvement. Working alongside peers we are looking for someone who enjoys collaborating with their Team, who More ❯

Senior .Net Developer (Azure) We are seeking a hands-on Senior developer to join a reputable fintech banking as a service organisation. You will be responsible for mentoring and providing continuous improvement. Working alongside peers we are looking for someone who enjoys collaborating with their Team, who More ❯

Software Developer - .NET, C#, Angular, SQL Server If you're: A Software Developer wanting to take their career to the next level And the idea of a greenfield transformation piques your interest Particularly the idea of you being one of the integral first boots on the ground More ❯

Senior Software Developer - Lisburn (Hybrid/On-Site) 📍 Location: Lisburn, Northern Ireland 🕒 Contract: Permanent, Full-Time (37.5 hrs/week) 💻 Work Setup: Hybrid/On-site We're hiring a Senior Software Developer to join a small, agile engineering team working on impactful, business-critical software. This is … a hands-on full-stack role with a strong focus on the .NET ecosystem. You'll play a leading part in maintaining and evolving internal applications and building out new product features with direct access to decision-makers and real influence over tooling, architecture, and delivery practices. 🔧 What You … ll Be Doing: Designing, building, and maintaining internal and client-facing software using C#, .NET, Angular , and related technologies Leading the development of new features using modern DevOps and deployment practices ( Docker, AWS ECS, CI/CD ) Refactoring and optimising legacy systems for performance, scalability, and maintainability Mentoring a More ❯

Senior Software Developer - Lisburn (Hybrid/On-Site) 📍 Location: Lisburn, Northern Ireland 🕒 Contract: Permanent, Full-Time (37.5 hrs/week) 💻 Work Setup: Hybrid/On-site We're hiring a Senior Software Developer to join a small, agile engineering team working on impactful, business-critical software. This is … a hands-on full-stack role with a strong focus on the .NET ecosystem. You'll play a leading part in maintaining and evolving internal applications and building out new product features with direct access to decision-makers and real influence over tooling, architecture, and delivery practices. 🔧 What You … ll Be Doing: Designing, building, and maintaining internal and client-facing software using C#, .NET, Angular , and related technologies Leading the development of new features using modern DevOps and deployment practices ( Docker, AWS ECS, CI/CD ) Refactoring and optimising legacy systems for performance, scalability, and maintainability Mentoring a More ❯

Senior C# Developer/Backend Software Engineer (C# .Net Core Azure SaaS) Reigate/WFH to £90k Are you a backend focussed C# Developer with an indepth knowledge of Azure? You could be progressing your career in a senior, hands on role at a global InsurTech business … that is producing game changing technology. As a Senior C# Developer you will join the team responsible for their flagship SaaS insurance platform that handles 4 billion requests per month, playing a key role in designing and developing new features and enhancements whilst ensuring high levels of security, reliability … a week for team meet-ups and stakeholder meetings with the other three days work from home. About you: You have expertise with C# .Net Core backend software development, having worked on large, scalable systems with complexity You're an advocate of creating, clean, reusable and maintainable code and More ❯

Senior C# Developer/Backend Software Engineer (C# .Net Core Azure SaaS) Reigate/WFH to £90k Are you a backend focussed C# Developer with an indepth knowledge of Azure? You could be progressing your career in a senior, hands on role at a global InsurTech business … that is producing game changing technology. As a Senior C# Developer you will join the team responsible for their flagship SaaS insurance platform that handles 4 billion requests per month, playing a key role in designing and developing new features and enhancements whilst ensuring high levels of security, reliability … a week for team meet-ups and stakeholder meetings with the other three days work from home. About you: You have expertise with C# .Net Core backend software development, having worked on large, scalable systems with complexity You're an advocate of creating, clean, reusable and maintainable code and More ❯

Full-time C# Developer - Energy Trading Systems (Remote/Brighton) Location: South-East/Brighton, UK (Remote with occasional Brighton visits) Boutique company seeks a talented C# Developer (10-15+ years .NET) to maintain and enhance a critical Position Management system for a major UK Energy … Trading house. Front Office experience, ideally in Energy (Gas & Power) or commodities, and direct interaction with Traders is key. Required: Strong C#, .NET 7/8, Microservices, XML/JSON/REST APIs, Webservices, Design Patterns, SQL Server, Azure (DevOps, Pipelines, Functions, Security), Git/GitHub, Docker/Kubernetes More ❯

Full-time C# Developer - Energy Trading Systems (Remote/Brighton) Location: South-East/Brighton, UK (Remote with occasional Brighton visits) Boutique company seeks a talented C# Developer (10-15+ years .NET) to maintain and enhance a critical Position Management system for a major UK Energy … Trading house. Front Office experience, ideally in Energy (Gas & Power) or commodities, and direct interaction with Traders is key. Required: Strong C#, .NET 7/8, Microservices, XML/JSON/REST APIs, Webservices, Design Patterns, SQL Server, Azure (DevOps, Pipelines, Functions, Security), Git/GitHub, Docker/Kubernetes More ❯

station and 1/2 mile from the M4/M5 interchange. We are delighted to be offering a unique opportunity for a talented .Net Software Developers to join our growing friendly team. We are looking for someone with commercial experience as a .Net Software Developer to … will need Experience working in a professional software development environment. Technical proficient in the following skill sets: MS Visual Studio C# Net framework/.Net Core Entity Framework MS SQL Server development, TSQL/Stored Procedures TDD WPF/MVVM Demonstrate a systematic, disciplined and analytical approach to problem More ❯