Lead Engineer .NET & SQL

About us

Sumex AG was founded in 2019 and emerged from the long-standing collaboration between ELCA Informatik AG and Suva. In 2022, we merged with Secon AG to become a leading provider of ERP and claims management software for the Swiss healthcare sector. Our goal is to reduce complexity, ensure compliance, and increase efficiency through the automation of standard processes in insurance. Our privately owned company, headquartered in Zurich, employs more than 50 experts who serve customers throughout Switzerland.

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 will take responsibility for demanding software solutions and work closely with customers and internal teams.

Your tasks

• Technical leadership and further development of software solutions based on .NET and SQL databases
• Development and maintenance of backend and frontend applications 
• Gathering, 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 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 where your commitment significantly contributes to the success of Sumex AG
• A 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 straightforward cross-departmental collaboration
• We organise regular events such as brown bag lunches and coding events as well as cosy and sporty social gatherings outside work
• 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 schemes, coverage of daily sickness and accident insurance (private, worldwide), and much more

Your profile

• 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 working style 
• Openness and interest in familiarising yourself with the processes of the health insurance industry 
• Very good German skills and good English skills 

We look forward to getting to know you and developing innovative solutions for the health insurance sector together. Apply now!