Chief Technology Officer

About the role

As CTO you take technical leadership of Caelex and shape the future of space-compliance software. You will own the architecture, evolve the platform from a powerful first-mover product into a scalable enterprise solution, and build the engineering team that gets us there. The EU Space Act comes into force in 2030 and reaches every satellite operator, launch provider, and space-data company in the Union. Caelex is the dedicated solution to that mandate — and you have the rare chance to set the technical DNA of a category-defining product from the ground up, with founding-level equity and real ownership of the roadmap.

What you’ll do

• Own architecture and technical decision-making across the Caelex platform
• Scale the existing codebase for enterprise customers and high availability
• Hire, mentor, and lead the engineering team as we grow
• Drive enterprise capabilities: SSO, multi-tenancy, a public API, and the integration marketplace
• Establish security and compliance posture (SOC 2, ISO 27001) end to end
• Partner with the CEO on product strategy and the technical roadmap
• Set engineering standards — code review, testing, infrastructure-as-code, observability

What you bring

• 5+ years building production software, including senior or lead ownership
• Deep command of a modern stack: TypeScript, React, Next.js, PostgreSQL
• Track record architecting and scaling B2B SaaS
• Fluency in security and compliance best practices
• Hands-on builder — you still ship code and set the bar by example
• Comfortable as the first engineering leader in an early-stage company
• Fluent in English (German is a plus)

Nice to have

• Experience in RegTech, compliance, or audit software
• Familiarity with the European space industry
• Experience with Vercel, Neon, and Prisma
• Background in cybersecurity
• Prior founding or 0→1 experience
• Experience building and leading distributed teams