Founding Full Stack Engineer

• Architect scalable, auditable backend systems (Python, PostgreSQL, modern frameworks)
• Build APIs enabling seamless collaboration between humans and AI agents
• Develop clean, modular frontend interfaces using React, Next.js, and TypeScript
• Implement and maintain data-heavy systems and structured knowledge frameworks
• Write clean, precise code and contribute to strong engineering standards
• Collaborate closely with founders, designers, and early users to deliver impactful features
• Influence product, technical direction, and architectural decisions as a founding engineer

• 4-6 years of software engineering experience (mid to senior level)
• Strong backend engineering skills with Python
• Proficiency in React, Next.js, TypeScript, Node.js
• Experience building data-heavy or versioned backend systems
• Strong clean-code discipline and architectural thinking
• English (Advanced/C1+)
• Valid Spain work permit (no sponsorship available), * Experience with AI agents or LLM-native applications
• Knowledge of Supabase, Postgres, RLS, versioning systems
• Familiarity with Radix, Tailwind, shadcn/ui, Inngest, Modal, Zod
• Engineering degree; PhD is a plus
• Background in life sciences, biopharma, or complex scientific domains

From €70,000 Gym membership Hybrid model, but with regular onsite collaboration strongly preferred

Equator is a newly founded AI-native startup building next-generation software for the biopharma industry. Their mission is to solve one of the sector's biggest challenges: knowledge management across scientific, commercial, and operational teams.