Senior Full-Stack Engineer (Next.js / PostgreSQL / Enterprise SaaS)

This role requires a true full-stack architect. You will be responsible for deconstructing a massive legacy monolithic application into modular React (Next.js) components, while simultaneously building the secure, multi-tenant PostgreSQL backend to support it. You will also build secure middleware to integrate with enterprise ecosystems like Microsoft 365 (SharePoint/Graph API).

We empower our engineering team with the best tools available. We expect you to be a power-user of modern AI coding assistants (Cursor, GitHub Copilot, Claude) to accelerate boilerplate generation, debugging, and refactoring so you can focus on high-level architecture and security. What You'll Do Frontend Architecture: Deconstruct a massive legacy codebase and refactor it into clean, reusable React (Next.js) components using a strict design system.

Implement complex global state management for real-time UI updates. Backend & Security: Design and deploy normalized PostgreSQL databases. Write and rigorously test strict Row-Level Security (RLS) policies to guarantee absolute data isolation across user roles.

Enterprise Integrations: Develop microservices to integrate deeply with the Microsoft Graph API. You will handle Entra ID O

Auth2 tokens, index SharePoint metadata and configure webhooks for automated folder syncing. Document Generation: Develop server-side pipelines to programmatically generate pixel perfect, branded Excel and Word reports. DevOps & AI: Build a secure, serversi de API Gateway to rout