About usOptimus Search is excited to collaborate with an exciting client in the energy sector specialising in the development of innovative AI, IoT, and cloud-based solutions that revolutionise business processes and enhance user experiences. With over 20 years of market success and an extensive client list in the energy market, they are looking for a Backend C# Developer. Their state-of-the-art products are designed to promote efficiency, growth, and success for customers worldwide.TasksDevelop robust web applications, databases, APIs, and microservices using .NET Core, Entity Framework, and MS SQL.Leverage your expertise in integrating Microsoft Azure Cloud capabilities into development processes for enhanced scalability and performance.Ensure high software quality by conducting automated tests and supporting comprehensive documentation.Focus on designing and enhancing backend solutions for web frontend applications, iOS/Android apps, or Unity-based applications.Analyse and troubleshoot issues across multiple layers—backend code, Vue/JS, SQL, Azure, mobile apps, identity servers, and log file analysis.ProfileYou have a degree in computer science, completed IT specialist training, or possess equivalent qualifications and relevant professional experience.You are proficient in programming with .NET Core, Entity Framework Core, Azure DevOps, MS SQL, Visual Studio, and Docker.You have strong analytical skills and thrive on tackling complex challenges.You excel in independent, structured work and are known for your reliability and attention to detail in daily tasks.Excellent German language skills (C1 level or higher) and have good command of written and spoken English.