Senior Software Engineer (Tech Lead) - SaaS Startup, 80-100%
A full stack engineering role with technical leadership and architecture ownership at an early-stage SaaS startup – remote across Europe.
Do you want to build the core platform that enables early-stage building design to be optimized through simulation and AI?
At vyzn, an ETH spin-off, we’re building a data- and AI-driven SaaS platform that shapes the future of construction planning. In just a few clicks, developers, planners, and architects receive precise insights on emissions, energy, comfort, and costs - based on automatically refined 3D building models - along with AI-powered recommendations to support well-informed decisions.
As an Engineering Lead (80–100%), you’ll take ownership of the technical foundation of our platform and lead a small, high-caliber engineering team (3–6 people), with the opportunity to expand and shape the team as we grow. You’ll be deeply hands-on in the codebase while shaping architecture, scaling systems, and helping steer how our product evolves.You enjoy balancing speed, pragmatism, and engineering quality. This role includes significant technical ownership and long-term upside through our ESOP program.
Tasks- Lead the technical development of our SaaS platform - from concept to deployment. Our stack is a modern Angular frontend paired with a scalable Nx-powered NestJS microservices backend, running on TypeScript end-to-end, with MySQL, Redis/BullMQ for async workloads, and fully containerized via Docker.
- Shape and evolve the software architecture to ensure scalability, performance, and maintainability as we grow the company and enter new markets.
- Build and inspire a world-class engineering culture. Mentor the development team (3–6 developers), fostering clean code, knowledge sharing, and best practices
- Collaborate closely with product and design to translate user needs into technical solutions
- Coordinate technical priorities with the CTO and founders
- Oversee code reviews, testing, and deployment pipelines
- 5+ years of experience in software development, ideally in SaaS, data, or AI-driven platforms
- Strong skills in TypeScript/Angular, Node.js, and cloud-based architectures (Azure or AWS)
- Proven experience in leading small engineering teams or mentoring developers
- A structured, pragmatic mindset — you know when to build fast and when to build for the long term
- Excellent communication skills in English; German is a plus
- Based in Europe (hybrid or remote with occasional workshops)
- Interest in architecture, BIM, and sustainability in the built environment
- Several members of our tech team are based in Egypt. Experience collaborating with teams across the MENA region, or familiarity with the culture is a plus
- Flexibility: Hybrid and remote work options to fit your lifestyle.
- Growth: Work on ambitious technical challenges that accelerate your professional and personal growth as we roll-out our platform in new markets.
- A-Player Team: Work alongside researchers, founders, and industry experts.
- Impact: Redefine how buildings are planned and optimized, enabling a more sustainable, affordable and livable future
- Builder Culture: High autonomy, low bureaucracy, fast decisions.
- Innovation at the Intersection of AI and Construction: Be part of groundbreaking platform innovation that combines cutting-edge technology with sustainable building solutions.
- Long-Term Potential: Join a dynamic, growing startup with flat hierarchies, high ownership, and the opportunity for long-term collaboration, including participation in our ESOP program.
If you want to build technology that fundamentally changes how buildings are designed, we’d love to hear from you!