Document AI Backend Engineer

About the role

We are looking for our first Backend Engineer to own the API powering our document‑AI product. You will shape the architecture, data model and take features from concept to production, directly impacting users of our B2C mobile app and partner organisations.

Key responsibilities

• Design, build and maintain the API for documents, checklists and the AI chat assistant.
• Develop the document processing pipeline (OCR, summarising, classification, naming and searchability).
• Implement the AI chat that answers user‑specific questions, combining personal context with a shared knowledge base.
• Integrate external (and possibly on‑premise) AI providers for classification and streaming chat responses.
• Own data modelling, permissions, security, multi‑tenant logic, deployment and monitoring.

Required profile

• Strong alignment with the mission of simplifying personal document management.
• Curiosity and drive to solve complex problems and ship solutions.
• Comfortable building AI‑assisted features while maintaining ownership of design and quality.
• Commitment to handling sensitive personal data with privacy as a core principle.

Required skills

• Ruby on Rails (or comparable backend framework) experience.
• API design and implementation.
• Automated testing of backend services.
• AI and LLM integration experience.
• Document processing and OCR knowledge.
• Strong backend fundamentals and reliability engineering.