Co-Founder & CTO

About the Role

As Co-Founder & CTO, you will take technical leadership of Caelex and shape the future of space compliance technology. You'll work closely with the CEO to evolve the platform from a functional prototype to a scalable enterprise solution. Caelex addresses a rapidly growing market with hundreds of potential customers — satellite operators, launch service providers, and space data companies that must achieve EU Space Act compliance by 2030. As CTO, you have the unique opportunity to shape the technical DNA of a first-mover product from the ground up.

Your Responsibilities

• Technical leadership and architecture decisions for the Caelex platform
• Scale the existing codebase for enterprise customers
• Build and lead the engineering team (Q4 2026+)
• Implement enterprise features: SSO, multi-tenancy, API marketplace
• Ensure compliance with relevant standards (SOC2, ISO 27001)
• Collaborate with the CEO on product strategy and technical roadmap
• Performance optimization and infrastructure-as-code
• Code reviews and establish engineering best practices

What You Bring

• 3+ years experience in software development
• Expertise in modern tech stack: Next.js, React, TypeScript, PostgreSQL
• Experience with enterprise SaaS architectures and scaling
• Understanding of security best practices and compliance requirements
• Entrepreneurial mindset and willingness to build a startup from scratch
• Fluent in English (German is a plus)
• Hands-on mentality — ready to write code yourself
• Experience with agile development methodologies

Nice to Have

• Experience in RegTech or B2B SaaS
• Knowledge of the European space industry
• Experience with Vercel, Neon, or similar cloud platforms
• Background in cybersecurity or audit software
• Experience with NextAuth.js, Prisma ORM
• Previous founding experience