Senior Full-Stack Developer (React + TypeScript + Supabase + AI)

Project: it's a modern AI-powered SaaS platform built for Swiss tax advisory firms. 

Tech stack: 

Frontend: React 19, TypeScript

Backend: Supabase, PostgreSQL

Responsibilities:

• Develop and maintain product features across the full stack.
• Build complex React interfaces for AI-powered document workflows.
• Design PostgreSQL schemas, SQL migrations, and RLS policies.
• Develop Supabase Edge Functions and backend services.
• Integrate and improve AI/LLM-powered features.
• Participate in architecture and technical decisions.
• Write and maintain automated tests.
• Optimize application performance, scalability, and security.
• Estimate tasks, identify risks, and contribute to planning.

• Collaborate directly with customers in English.

   

Requirements:

• 5+ years of commercial Full-Stack development experience.
• Strong expertise in React and TypeScript.
• Strong SQL and PostgreSQL skills.
• Experience designing secure backend systems and APIs.
• Experience integrating third-party APIs (AI/LLMs is a plus).
• Experience writing automated tests.
• Experience with Docker and modern development workflows.
• Ability to estimate tasks and work independently.
• English level B2+ (spoken and written).