Full-Stack Software Engineer (80-100)

We are a ConTech SaaS startup that is rethinking cost-related processes in the construction industry. Our application helps SME construction companies unlock essential productivity gains through an end-to-end cost estimation process.

Were looking for a skilled full-stack software engineer to design develop and maintain a scalable mobile and web application. Youll be responsible for both frontend and backend systems collaborating in close collaboration with the UI/UX testing and revenue team to deliver easy-to-use and user-friendly new functionality.

• Co-Architect & Scale Act as the technical sparring partner to the CTO. You wont just execute tasks; you will actively debate design and make shared decisions on how to evolve the architecture of a live platform serving 200 growing customers.
• Accelerate Feature Delivery Help us scale up our shipping velocity. Youll build and deploy across the entire stack to deliver robust new features to our active user base.
• Operational Ownership Gain deep end-to-end knowledge of the codebase to become a trusted second-in-command. Youll be fully equipped to troubleshoot live issues ensure high availability and keep the engine running smoothly on your own.
• Fortify the Foundation As we scale you will help upgrade our engineering practices - improving CI/CD pipelines automated testing and code quality to ensure we build fast without breaking things.
• Bridge Tech and Business Collaborate directly with our revenue and product teams to translate customer feedback into scalable technical solutions that drive the next phase of our companys growth.

• 5 years of professional experience as a Full-Stack Software Engineer.
• Solid CS Foundation: Bachelors degree in Computer Science Software Engineering or a related fi eld (or equivalent practical experience).
• Strongly Typed Language Expertise: Strong profi ciency in object-oriented programming. We use C# but a deep foundation in Java Go C or Rust is perfectly fi ne if you are eager to learn.
• Real-World Team Git Experience: You know how to collaborate in a shared repository. Branching pushing pulling creating PRs and resolving the occasional merge confl ict shouldnt scare you.
• DevOps Mentality: You value effi cient engineering workfl ows. You are comfortable working with CI pipelines and are excited to help us design and implement our continuous delivery (CD) practices and expand our automated testing.
• Language: Fluent in English.
• Startup Mindset: Proactive independent and comfortable navigating ambiguity. You dont just wait for tickets to be assigned; you see problems and propose solutions.

Nice to Have:

• Fluent in German.
• In-depth experience with C#.
• Experience with Typescript/Unity/Flutter.
• Experience with Firebase.

• Be part of an early-stage team shaping the future of digital construction.
• Work directly with senior leadership on high-impact projects.
• Opportunity to experiment learn fast and grow your career.
• Competitive salary equity option.

We look forward to hearing from you!