Co-Founding CTO

This is a co-founder-level CTO opportunity at an early-stage AI-powered smart home intelligence startup, where you'll own the full technical vision from architecture through team-building. Your work will directly shape how properties detect anomalies, optimise energy usage, and manage connected systems - at scale.

• Own and continuously evolve the technical architecture across IoT, cloud, and AI/ML layers.

• Lead and grow the engineering team, including hiring, mentoring, and setting engineering culture.

• Drive the product roadmap from a technical perspective, balancing long-term innovation with near-term execution.

• Write production code and solve critical technical problems hands-on alongside your team.

• Represent the technical vision to investors, partners, and external stakeholders.

• Salary range: €60,000-€100,000 annually, discussed case by case.

• Co-founding equity up to 5% via an earn-in structure.

• Visa sponsorship is not available.

On-site role primarily based in the Balearic Islands, Spain, with ties to Munich, Germany. Multiple Spanish and German city hubs considered.

• 10+ years of software engineering or technical leadership experience, with 3+ years in senior technical leadership roles.

• Proven 0→1 startup experience as a co-founder or early-stage CTO - not an exclusively large-company background.

• Strong IoT and embedded systems background with hands-on experience shipping real products.

• Cloud architecture expertise, preferably AWS, with a track record of designing and deploying scalable systems.

• Practical AI/ML product experience applied to production systems.

• Hardware and software crossover experience, with fluency across both embedded and software systems integration.

• Hands-on coding ability - you're comfortable jumping into the codebase, not purely managing.

• Familiarity with the smart home, building tech, or energy management domain is a plus.

• German or Spanish language proficiency is a plus.

• Comfortable working with a stack that includes React, Docker, Kubernetes, AWS, Raspberry Pi, ThingsBoard, and AI/ML tooling.