Salary: £40,000 - 70,000 per year Requirements: We are looking for a Full Stack Developer with a background in .NET and C#. We want someone with knowledge of JavaScript and C++. We need a candidate who is comfortable working in an autonomous role and acting as the go-to technical expert. We are looking for someone with experience supporting web applications and integrating technical systems. We would value experience with IoT devices, sensors, and control panels. We are looking for someone who can provide customer and field engineer technical support. We are open to candidates with relevant full stack development experience, ideally within a similar technical environment. Responsibilities: We maintain and improve our .NET web application. We provide first-line support to customers and help resolve technical issues. We configure and integrate IoT devices into control panels. We remotely support field engineers with technical enquiries. We work on projects from concept through to completion. We collaborate on the integration of smart device technology into our systems. We work a hybrid schedule, with up to 3 days working from home and a 40-hour work week. Technologies: C# IoT Support JavaScript Web ASP.NET Fullstack More: We are the go-to experts in our technical niche, specialising in the renewables sector and developing and manufacturing equipment used to recycle wastewater and harvest rainwater. Our technology is installed across the UK with major blue-chip clients, and we are constantly improving our products as we bring a new system to market. This is a hybrid role based in London, with the opportunity to work from home up to 3 days per week, and we offer company benefits plus an early 1:30pm finish on Fridays. last updated 21 week of 2026