Lead Engineer .NET & SQL

Join us as a Lead Engineer specializing in .NET and SQL! Work on innovative solutions in a dynamic environment., * Lead technical development of software solutions with .NET and SQL.

• Develop and maintain backend and frontend applications.
• Engage with clients to analyze and implement their requirements., Are you a technically skilled individual who enjoys customer contact, software development and professional leadership? Then we are looking for you as Lead Engineer .NET & SQL. In this role, you take responsibility for demanding software solutions and work closely with customers and internal teams., * Technical leadership and further development of software solutions based on .NET and SQL databases
• Development and maintenance of backend and frontend applications
• Recording, analysing and implementing customer requirements
• Supporting Teams meetings and close collaboration with internal and external stakeholders
• Coordination and support of team members and project participants
• Direct contact with customers as well as support and advice on technical issues
• Ensuring quality, performance and stability of the applications
• Willingness to learn and understand the business processes and professional context of health insurance

Our offer

• You can expect a dynamic and interdisciplinary environment in which your commitment significantly contributes to the success of Sumex AG
• Key role in shaping a leading and established Swiss IT solution with a wide range of modules and services based on modern technologies
• Attractive prospects for your further professional and personal development
• Flat hierarchies and uncomplicated cross-departmental collaboration
• We organise regular events such as brown bag lunches and coding events as well as cosy and sporty off-site gatherings
• Good work-life balance (flexitime, home office), modern and flexible workplace in a multicultural environment
• Top benefits such as: purchase of up to 13 days' holiday, contribution to private mobile phone or business phone, half-fare travelcard, business travel in 1st class, flexible pension fund models, coverage of daily sickness and accident insurance (private, worldwide), and much more

• Experience as a Software Engineer or Lead Engineer required.
• Proficient in Microsoft SQL Server, .NET, C#, and JavaScript.
• Strong communication and organizational skills necessary., * Several years of experience as a software engineer or lead engineer
• Solid experience in software development with Microsoft SQL Server, .NET, C#, Blazor, JavaScript and Vue.js
• Experience in developing and maintaining modern backend and frontend applications
• Enjoyment of customer contact and collaboration with various stakeholders
• Experience with AI-supported development tools such as Claude Code and AI-based code reviews
• Strong communication and organisational skills
• Independent, solution-oriented and structured way of working
• Openness and interest in familiarising yourself with the processes of the health insurance industry
• Very good German skills and good English skills