Senior Full-Stack Engineer (AI-Native)

We are seeking a Senior Full-Stack Engineer to build AI-native MVPs and modernize client products. The role involves setting up projects, building backends on Supabase, owning security, integrating payments, and deploying to production. You will work with React, TypeScript, Node.js, and AI coding tools like Claude Code and Cursor.

• Set up projects correctly from day one: repository structure, design system and typography integration, environments, CI/CD
• Take designer-built interfaces to production: refine the code, connect data, make it stable and maintainable
• Build MVP backends on Supabase: database schema, authentication, roles and permissions, row-level security, storage, edge functions
• Own security: make sure users never see each other's data, review access rules, catch unsafe patterns in AI-generated code
• Integrate payments and third-party services; deploy and maintain production environments
• Choose and justify the stack for each project and explain the choice to the client
• Work with existing client codebases during redesign and modernization projects
• Set up AI-driven testing: autotest logic, coverage of key flows, a QA process designers and external QA can follow
• Review code, define engineering standards, and support designers working in code
• Estimate projects accurately and take part in scoping and presales
• Coordinate with partner backend teams on heavy, complex products

• 4+ years of commercial development across both frontend and backend
• Strong React and TypeScript (Next.js is a plus, not required)
• Solid backend experience: Node.js or another server language, relational databases (PostgreSQL), API design
• Hands-on Supabase or Firebase experience: auth, row-level security, access control
• Experience deploying and running products in production (Vercel, cloud providers, CI/CD)
• Payment integrations or work with financial data
• A portfolio of small to medium products you built end to end, with the ability to explain why each technology was chosen
• Experience with more than one stack, so you can pick the right tool rather than default to one
• Security mindset: authorization, data isolation, secrets management
• Testing culture: unit and E2E (Jest, Playwright / Cypress), including tests written by AI
• Experience working with existing codebases, refactoring, and migrations
• Daily work with Claude Code, Cursor, Codex, or similar agentic tools
• Preparing context for agents: CLAUDE.md / cursor rules, MCP integrations, task decomposition
• Critical review of AI-generated code: hallucinations, unsafe patterns, unnecessary abstractions
• Understanding where AI saves time and where it creates technical debt
• Ability to build an AI-driven workflow for the team, including designers who code
• Ability to explain to a client how AI-native development affects timelines and cost
• English B2+, confident in a one-hour client call without an interpreter
• Comfortable talking to CTOs, founders, and C-level: structured, focused on business impact
• Able to explain technical risks, trade-offs, and stack choices in business terms
• Able to say 'no' to a poor idea or unrealistic scope respectfully and on time
• Clear written updates and documentation
• Product thinking: you care about what the MVP is for, not only how it's built (nice to have)
• Experience with Lovable, v0, Figma Make, or similar AI builders, and knowing their limits (nice to have)
• Python, Go, or PHP backend experience (nice to have)
• Analytics and A/B testing setup for live products (nice to have)
• Web3: WalletConnect, ethers.js / viem (nice to have)
• Previous Tech Lead experience (nice to have)
• Presale and project estimation experience (nice to have)