Senior Platform Engineer – Backend

**Senior Platform Engineer – Backend** **The Role** We are looking for **Senior Platform Engineers (Backend)** to strengthen our Platform Engineering team, focused on building reusable components, standardized APIs, and internal accelerators that enable squads with quality, governance, and scalability. 📍 **Hybrid model** – must have easy access to the office in **Barueri/SP** . ⚙️ This is a **platform development role** , not a traditional operations position. **Key Responsibilities** * Build internal SDKs (e.g., email, authentication, logging) and reusable multi\-tenant APIs * Ensure proper versioning, backward compatibility, and standardized abstractions for squad adoption * Develop the internal AI platform in partnership with AI Governance, implementing usage control and rate limiting * Evolve corporate templates, create and maintain **Golden Paths** , and enhance automated quality gates * Architecturally integrate solutions with **Backstage (IDP), GitLab CI, and GKE** (no operational ownership) **Requirements** * Strong backend background with solid expertise in **Node.js, Go, or Python** * Deep knowledge of **REST APIs, distributed systems, and multi\-tenant architectures** * Proven experience with **semantic versioning, automated testing, and authentication mechanisms (OAuth, JWT, RBAC)** * Strong CI/CD and Kubernetes knowledge at an **architectural level** * **AI\-native profile (mandatory)** with daily use of GitHub Copilot, Cursor, or Codeium * Advanced technical English with ability to communicate in global environments **Nice to Have** * Advanced experience with **GitLab CI** * Experience designing **SDKs, LLM APIs, or internal platforms** * Previous experience in **Platform Engineering** , corporate SDK development, and/or use of **Backstage (IDP)**