Technical Co-Founder

We are exploring open problem spaces that demand immediate technical execution and tight customer feedback loops without corporate overhead. Without a deeply technical co-founder to architect systems from scratch and test ideas side-by-side in Berlin, we cannot rapidly build, validate, and scale high-performance products.

Complete technical strategy, architecture, and hands-on execution across mobile and core systems alongside shared product leadership.

• Architect and build high-performance mobile and system applications completely from scratch.
• Direct end-to-end technical strategy and infrastructure decisions across every project lifecycle.
• Drive rapid product discovery and customer validation experiments directly with your co-founder.
• Co-own sales, marketing, and go-to-market execution across new product iterations.
• Integrate machine learning and AI capabilities into client-facing and system-level applications.

• Deep, machine-level understanding of operating systems across Android, iOS, macOS, or Windows.
• Advanced mastery of native mobile stacks (Swift, Kotlin, Java) or cross-platform tools (React Native, Flutter).
• Currently working full-time on a startup or deeply immersed in startup building.
• High versatility with an open mind regarding problem spaces, pivoting, and product discovery.
• Hands-on familiarity with AI and machine learning technologies is a strong plus.
• Based in Berlin and committed to high-intensity, in-person collaboration.

High-intensity, early-stage building environment centered on close, in-person collaboration in Berlin. Decisions are made through direct, rapid dialogue between co-founders with a bias for fast iteration, hands-on execution, and deep technical exploration without corporate overhead.

• Equal co-founder standing with total technical autonomy and product decision-making power.
• Zero corporate bureaucracy, allowing direct dialogue and immediate code-to-production cycles.
• High-intensity, shoulder-to-shoulder creative partnership in Berlin.
• Direct exposure across all venture disciplines, from low-level systems to client sales.

Mobile Development · Swift · Kotlin · Java · React Native · Flutter · Operating Systems · AI · Machine Learning · Sales and Marketing · Product Management

This probably isn't for you if:

• You want a remote role or cannot commit to regular, in-person collaboration in Berlin.
• You prefer delegating to an engineering team rather than writing core code yourself.
• You want a fixed, predefined product roadmap rather than navigating rapid validation cycles.

If you are ready to build from the ground up and co-lead a new venture from day zero in Berlin, let's connect directly.