Back-end Engineer / Platform Engineer

**Job Title: Back\-end Engineer / Platform Engineer** **Location: Brazil (Remote)** **Mode: Contract** **Role Overview** We are seeking an experienced **Back\-end / Platform Engineer** to design and build scalable backend services and APIs. The ideal candidate will have strong experience with **Node.js, TypeScript, GraphQL, and API development** , along with experience working with cloud platforms and modern containerized environments. **Mandatory Skills** * GraphQL * API Development (GraphQL \& REST) * Node.js * TypeScript **Required Experience** * 6\+ years of experience in **software engineering or backend development** * Strong experience building and maintaining **APIs using GraphQL and REST** * Solid understanding of **database design and optimization (SQL \& NoSQL)** * Hands\-on experience with **cloud platforms such as AWS or OCI** * Experience with **containers and orchestration tools (Docker, Kubernetes)** * Proficiency in backend technologies such as **Node.js, Java (Spring Boot), or Python** **Key Responsibilities** * Design, develop, and maintain **data\-driven APIs using GraphQL and REST** * Build and optimize **backend services** interacting with relational and NoSQL databases * Design and manage **GraphQL schemas, resolvers, and API performance** * Collaborate with **data, product, and application teams** to define data access patterns * Implement **API security, versioning, and governance best practices** * Deploy and manage services using **Docker and Kubernetes** * Work with **AWS or OCI cloud services** to build scalable and reliable systems * Monitor, troubleshoot, and optimize **application and database performance** * Participate in **architecture discussions and mentor junior engineers**