1 to 25 of 78 Senior .NET Developer Jobs in the UK

Senior .Net Developer - South Wales - to 56K plus benefits I am seeking a Senior .Net Developer to work for a fantastic business based in the heart of South Wales. The organisation are putting together a new software development, QA and DevOps team … successful Senior .Net Developer will be at the heart of the technical decision-making on a string of exciting greenfield projects. The right Senior .Net Developer will have demonstrable experience of working in an Agile Development team, and will have excellent skills in .Net ...

Senior .Net Developer - South Wales - to £56K plus benefits I am seeking a Senior .Net Developer to work for a fantastic business based in the heart of South Wales. The organisation are putting together a new software development, QA and DevOps team … successful Senior .Net Developer will be at the heart of the technical decision-making on a string of exciting greenfield projects. The right Senior .Net Developer will have demonstrable experience of working in an Agile Development team, and will have excellent skills in .Net ...

Great opportunity for a Senior .NET Developer to join a SaaS scale-up in Manchester. Since their inception in 2015 this company has grown from start-up to scale-up, they now employ almost 200 people and have over 50,000 clients using their software across … increments of value to their customers very frequently. This role sits within the team responsible for developing their flagship software platform and as a Senior .NET Developer you'll be given the opportunity to build, test and ship super-fast in a team that cares about engineering ...

Senior .NET Developer | HL7 or DICOM or FHIR | HealthTech & BioTech Systems Location: Nottingham (Hybrid, 2–3 days onsite initially, more flex after that) Salary: Up to £80,000+ depending on experience The Role Join a specialised engineering team within a leading HealthTech/BioTech organisation developing digital … platforms used across scientific, clinical, and laboratory environments. Your work will centre on building and maintaining .NET-based integrations that connect internal systems with external healthcare partners. You'll design, refine, and support dataflows that are essential for time-sensitive scientific and clinical processes—ensuring stable, compliant and scalable ...

Senior .NET Developer | HL7 or DICOM or FHIR | HealthTech & BioTech Systems Location: Nottingham (Hybrid, 2–3 days onsite initially, more flex after that) Salary: Up to £80,000+ depending on experience The Role Join a specialised engineering team within a leading HealthTech/BioTech organisation developing digital … platforms used across scientific, clinical, and laboratory environments. Your work will centre on building and maintaining .NET-based integrations that connect internal systems with external healthcare partners. You’ll design, refine, and support dataflows that are essential for time-sensitive scientific and clinical processes—ensuring stable, compliant and scalable ...

Position Overview We are seeking a highly skilled Senior .NET Developer with strong experience in .NET Core (6+), C#, ASP.NET , and hands-on expertise in GitLab CI/CD pipelines . The ideal candidate should have a deep understanding of backend development, microservices, DevOps practices … modern cloud environments. Experience with performance tuning, application optimization, and system migrations is a strong advantage. Key Responsibilities Design, develop, and maintain applications using .NET Framework, .NET Core (6+), C#, ASP.NET , and Web APIs . Build and consume WCF services and RESTful APIs. Work extensively with ...

Senior Back-End Developer - C#/.NET/SQL Server C#, .NET 6+, SQL Server, REST & GraphQL APIs, Azure, Git Salary up to £65k Onsite in Central Manchester Excellent career progression Who We Are We're a collaborative tech team delivering robust, scalable SaaS products … global customer base. Our developer-led culture values clean, maintainable code, innovation, and continuous learning. With an ambitious roadmap ahead, we're expanding our back-end capabilities and looking for a Senior Developer to help shape and deliver our next generation of features. Who We're Seeking ...

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 … building from the ground up and currently expanding their team to work on a completely greenfield build, payments platform. As a Senior Backend, your role will be to come in and build out a new Payments platform working very closely with another engineer to redesign parts of the system ...

seasoned .NET Developer who thrives on building scalable, elegant software that powers real-world applications? Are you passionate about designing clean architecture, applying SOLID principles, and mentoring other Software Engineers? Join us and help shape the future of our cloud-based SaaS platform. … with a product used by thousands of customers globally. Our platform is built for scale, reliability, and agility — and we're looking for a Senior .NET Developer who shares our drive to deliver engineering excellence. What You'll Do Design and implement high-performance, scalablemicroservicesusing.NET 6+ ...

Senior .NET Developer - Manchester (Hybrid) Join high-performing development teams of 250+ building real-time, large-scale systems used by millions of users across the UK, North America and South Africa. This is a chance to work on business-critical software that directly drives user engagement … Collaborate with end-users to gather requirements and provide support What You'll Need: Experience working on large commercial systems Strong skills in C#, .NET Core, and Web APIs Database experience, working with both SQL and NoSQL Performance tuning and optimisation expertise Contact Philip Boltt at Lorien Global ...

Senior Developer - React + WordPress or .Net Up to £65k + benefits Fully remote (South Wales/South West preferred for monthly meet up) Want to build tech for good infrastructure for systems that save lives? Fancy developing greenfield predictive AI models for innovative start … sports and health space? If that sounds like your kind of work, you might like what we are doing. We are looking for a Senior Developer to join a close knit tech team working across a mix of meaningful client projects and internal products. The work is varied ...

mission-critical software that supports healthcare organisations worldwide. Innovation, reliability, and engineering quality define our approach to improving patient outcomes through technology. As a Senior .NET Developer, you will play a pivotal role in designing, developing, and maintaining secure and scalable Web API backends, as well … integration solutions built on the latest .NET technologies. Your work will focus on delivering reliable healthcare integrations, implementing industry best practices for API security, and ensuring high performance across distributed systems. In addition to hands-on development, you will contribute to architectural decision-making, lead technical design initiatives ...

mission-critical software that supports healthcare organisations worldwide. Innovation, reliability, and engineering quality define our approach to improving patient outcomes through technology. As a Senior .NET Developer, you will play a pivotal role in designing, developing, and maintaining secure and scalable Web API backends, as well … integration solutions built on the latest .NET technologies. Your work will focus on delivering reliable healthcare integrations, implementing industry best practices for API security, and ensuring high performance across distributed systems. In addition to hands-on development, you will contribute to architectural decision-making, lead technical design initiatives ...

mission-critical software that supports healthcare organisations worldwide. Innovation, reliability, and engineering quality define our approach to improving patient outcomes through technology. As a Senior .NET Developer, you will play a pivotal role in designing, developing, and maintaining secure and scalable Web API backends, as well … integration solutions built on the latest .NET technologies. Your work will focus on delivering reliable healthcare integrations, implementing industry best practices for API security, and ensuring high performance across distributed systems. In addition to hands-on development, you will contribute to architectural decision-making, lead technical design initiatives ...

mission-critical software that supports healthcare organisations worldwide. Innovation, reliability, and engineering quality define our approach to improving patient outcomes through technology. As a Senior .NET Developer, you will play a pivotal role in designing, developing, and maintaining secure and scalable Web API backends, as well … integration solutions built on the latest .NET technologies. Your work will focus on delivering reliable healthcare integrations, implementing industry best practices for API security, and ensuring high performance across distributed systems. In addition to hands-on development, you will contribute to architectural decision-making, lead technical design initiatives ...

mission-critical software that supports healthcare organisations worldwide. Innovation, reliability, and engineering quality define our approach to improving patient outcomes through technology. As a Senior .NET Developer, you will play a pivotal role in designing, developing, and maintaining secure and scalable Web API backends, as well … integration solutions built on the latest .NET technologies. Your work will focus on delivering reliable healthcare integrations, implementing industry best practices for API security, and ensuring high performance across distributed systems. In addition to hands-on development, you will contribute to architectural decision-making, lead technical design initiatives ...

mission-critical software that supports healthcare organisations worldwide. Innovation, reliability, and engineering quality define our approach to improving patient outcomes through technology. As a Senior .NET Developer, you will play a pivotal role in designing, developing, and maintaining secure and scalable Web API backends, as well … integration solutions built on the latest .NET technologies. Your work will focus on delivering reliable healthcare integrations, implementing industry best practices for API security, and ensuring high performance across distributed systems. In addition to hands-on development, you will contribute to architectural decision-making, lead technical design initiatives ...

mission-critical software that supports healthcare organisations worldwide. Innovation, reliability, and engineering quality define our approach to improving patient outcomes through technology. As a Senior .NET Developer, you will play a pivotal role in designing, developing, and maintaining secure and scalable Web API backends, as well … integration solutions built on the latest .NET technologies. Your work will focus on delivering reliable healthcare integrations, implementing industry best practices for API security, and ensuring high performance across distributed systems. In addition to hands-on development, you will contribute to architectural decision-making, lead technical design initiatives ...

mission-critical software that supports healthcare organisations worldwide. Innovation, reliability, and engineering quality define our approach to improving patient outcomes through technology. As a Senior .NET Developer, you will play a pivotal role in designing, developing, and maintaining secure and scalable Web API backends, as well … integration solutions built on the latest .NET technologies. Your work will focus on delivering reliable healthcare integrations, implementing industry best practices for API security, and ensuring high performance across distributed systems. In addition to hands-on development, you will contribute to architectural decision-making, lead technical design initiatives ...

mission-critical software that supports healthcare organisations worldwide. Innovation, reliability, and engineering quality define our approach to improving patient outcomes through technology. As a Senior .NET Developer, you will play a pivotal role in designing, developing, and maintaining secure and scalable Web API backends, as well … integration solutions built on the latest .NET technologies. Your work will focus on delivering reliable healthcare integrations, implementing industry best practices for API security, and ensuring high performance across distributed systems. In addition to hands-on development, you will contribute to architectural decision-making, lead technical design initiatives ...

mission-critical software that supports healthcare organisations worldwide. Innovation, reliability, and engineering quality define our approach to improving patient outcomes through technology. As a Senior .NET Developer, you will play a pivotal role in designing, developing, and maintaining secure and scalable Web API backends, as well … integration solutions built on the latest .NET technologies. Your work will focus on delivering reliable healthcare integrations, implementing industry best practices for API security, and ensuring high performance across distributed systems. In addition to hands-on development, you will contribute to architectural decision-making, lead technical design initiatives ...

mission-critical software that supports healthcare organisations worldwide. Innovation, reliability, and engineering quality define our approach to improving patient outcomes through technology. As a Senior .NET Developer, you will play a pivotal role in designing, developing, and maintaining secure and scalable Web API backends, as well … integration solutions built on the latest .NET technologies. Your work will focus on delivering reliable healthcare integrations, implementing industry best practices for API security, and ensuring high performance across distributed systems. In addition to hands-on development, you will contribute to architectural decision-making, lead technical design initiatives ...

mission-critical software that supports healthcare organisations worldwide. Innovation, reliability, and engineering quality define our approach to improving patient outcomes through technology. As a Senior .NET Developer, you will play a pivotal role in designing, developing, and maintaining secure and scalable Web API backends, as well … integration solutions built on the latest .NET technologies. Your work will focus on delivering reliable healthcare integrations, implementing industry best practices for API security, and ensuring high performance across distributed systems. In addition to hands-on development, you will contribute to architectural decision-making, lead technical design initiatives ...

mission-critical software that supports healthcare organisations worldwide. Innovation, reliability, and engineering quality define our approach to improving patient outcomes through technology. As a Senior .NET Developer, you will play a pivotal role in designing, developing, and maintaining secure and scalable Web API backends, as well … integration solutions built on the latest .NET technologies. Your work will focus on delivering reliable healthcare integrations, implementing industry best practices for API security, and ensuring high performance across distributed systems. In addition to hands-on development, you will contribute to architectural decision-making, lead technical design initiatives ...

mission-critical software that supports healthcare organisations worldwide. Innovation, reliability, and engineering quality define our approach to improving patient outcomes through technology. As a Senior .NET Developer, you will play a pivotal role in designing, developing, and maintaining secure and scalable Web API backends, as well … integration solutions built on the latest .NET technologies. Your work will focus on delivering reliable healthcare integrations, implementing industry best practices for API security, and ensuring high performance across distributed systems. In addition to hands-on development, you will contribute to architectural decision-making, lead technical design initiatives ...