Description: We’re looking for a Brazil-based Full Stack Developer (solo or a small team) who can take ownership of delivery, maintenance, and continuous iteration. You’ll work directly with the founder, under NDA, with a long-term collaboration mindset. Responsibilities: - Design and implement APIs, business logic, and database structure - Create and maintain admin panels for frequent data entry and updates - Implement user authentication, roles, and permissions - Improve performance, reliability, and scalability as the product grows - Maintain the existing system: bug fixes, refactors, upgrades, and new features - Propose practical technical improvements (architecture, tooling, security, DX) - Communicate clearly: progress updates, tradeoffs, and realistic timelines What This Is NOT - Not a WordPress site - Not a short-term freelance gig - Not a design-only role Requirements: - Based in Brazil (mandatory) - Strong experience with both frontend and backend development - Comfortable working on long-term projects, not one-off builds - Able to maintain, improve, and scale an existing system - Willing to work under NDA Nice to have: - Experience with SaaS or internal platforms - Experience owning projects end-to-end - Ability to suggest architecture and process improvements - Familiarity with secure development practices (auth, data protection, auditability) Benefits: - Long-term collaboration (not a short gig) - Direct access to decision-making (work with the founder, fast feedback loops) - Flexible engagement model: - monthly retainer, or - phased delivery (milestones) with ongoing maintenance - Opportunity to shape a real system and improve it continuously