.Net Sdet Engineer

Express Recruitment are proud to be supporting one of Nottingham's longest-established software companies, providing innovative software control solutions to a variety of global manufacturers. Following recent company growth and continued investment in software development, our client is seeking a hands-on Software Developer with strong C#/.NET and full-stack web development experience to support the development, maintenance, and modernisation of its industrial control platform. Initially, the role will focus on developing and maintaining .NET web applications using C#, ASP.NET Core, JavaScript, HTML, CSS, and SQL Server. As you develop your knowledge of the company's products, systems, and customers, you will progressively take ownership of test automation, helping to improve software quality, test coverage, and release confidence across the development team. This is an excellent opportunity for a developer who enjoys solving complex technical challenges, working collaboratively with software and control engineers, and seeing their work implemented in live manufacturing environments. Career Development & Progression: This role offers a clear development pathway, beginning with full-stack application development and progressing towards greater responsibility for test automation and software quality. During the first six months, you will build familiarity with the company's codebase, products, and industrial processes before increasingly taking ownership of automated testing capabilities and supporting improvements across the development team. You will work alongside experienced software developers and control engineers, gaining exposure to live industrial systems, customer requirements, and modern software engineering practices. In return, you can expect a competitive salary up to £55,000, including an attractive annual bonus, a 6% employer pension contribution, private healthcare, flexible salary sacrifice schemes, and genuine opportunities for professional development and progression. Skills & Experience

• Demonstrable commercial experience developing software using C# and the .NET ecosystem, including ASP.NET Core.
• Strong experience building web applications using MVC, Razor, Blazor, JavaScript, HTML, and CSS.
• Proficient in SQL Server, including database design, writing and optimising queries, and maintaining reporting solutions.
• Experience applying software architecture principles, including SOLID, Clean Architecture, or Vertical Slice Architecture.
• Experience working within a DevOps-oriented development team, using source control, code reviews, and collaborative development practices.
• Knowledge of automated software testing, including unit, integration, and end-to-end testing, with exposure to tools such as Selenium, Playwright, xUnit, or JMeter.
• Experience with continuous integration and continuous delivery (CI/CD) processes.
• Understanding of distributed systems, microservices, and secure software development practices.
• Experience using AI-assisted development tools to understand existing codebases, develop new features, and refactor existing applications.
• Familiarity with Git, GitHub, or equivalent source control and code review platforms.
• Previous experience with C or Visual Basic .NET in a Windows environment.
• Experience working within industrial automation, factory process control, manufacturing, or plant engineering environments.
• Knowledge of control systems, commissioning, or implementing software within live operational environments.
• Experience with Crystal Reports or other reporting and analytics tools.
• Experience working in an Agile development environment and contributing to technical documentation and peer code reviews.
• Confidence communicating directly with customers and translating business or operational requirements into technical solutions. Roles & Responsibilities
• Contribute to all stages of the software development life cycle, including requirements gathering, solution design, development, testing, deployment, and ongoing support.
• Design, develop, and maintain web applications using C#, ASP.NET Core, JavaScript, HTML, CSS, and Microsoft Visual Studio.
• Develop end-to-end software features, covering database design, SQL queries, back-end functionality, and front-end user interfaces.
• Maintain and enhance existing applications, ensuring software solutions remain reliable, scalable, secure, and maintainable.
• Design, develop, and optimise SQL Server databases, queries, dashboards, and reporting solutions to support industrial control processes.
• Work closely with control and automation engineers to understand manufacturing processes and translate operational requirements into effective software solutions.
• Support software deployment, commissioning, troubleshooting, and diagnostics within live industrial environments and customer sites.
• Establish and develop automated testing processes, standards, tools, and environments, using technologies such as Selenium, Playwright, xUnit, and Azure DevOps.
• Integrate automated testing, continuous integration, and continuous delivery practices into the software development life cycle.
• Apply appropriate software architecture principles, design patterns, and SOLID principles to produce high-quality, sustainable software.
• Work collaboratively with developers, engineers, stakeholders, and customers to deliver effective technical solutions.
• Use AI-assisted development tools to improve productivity, support code analysis, and accelerate development while maintaining strong engineering standards.
• Participate in code reviews, technical documentation, and continuous improvement initiatives across the Development team. About Express Recruitment Express Recruitment has been offering exceptional recruitment solutions across the East Midlands since 1987, “exceeding expectations every time” of over 267,000 candidates. We supply a diverse range of sectors including Engineering, Technology, Professional Services, Languages, Sales & Marketing, Call Centres, Commercial, Manufacturing, Local Authority, NHS, Education and Voluntary organisations. Find all of our current vacancies on https://bit.ly/3IaEnI7 Not quite found the right role for you yet? Let us do the scrolling for you! Your search for a new role has never been so easy, just fill in our contact form on https://bit.ly/3NHa9NR or give us a call on 0115 924 0010 and we will do the rest for you. Job Location Nottingham, Nottinghamshire Salary c£55,000 Per Annum D.O.E + Bonus Job Type and Hours Full-time, Monday to Friday How to Apply Interested candidates can send their resumes to jobs@express-recruitment.co.uk mentioning the Job Title in the subject line. Unfortunately, we are unable to contact all candidates due to the large volume of applications we receive. If you have not heard from a consultant within the next three days, please assume that you have not been successful on this occasion. Please do not hesitate to apply for other suitable roles in the future. This vacancy is being advertised on behalf of Express Recruitment Ltd. The services advertised by Express Recruitment Ltd. are those of an Employment Agency.