Backend Software Developers

Description

Job Summary: Responsible for developing and managing APIs, financial modules, WhatsApp integrations, and AI logic, ensuring security and multi-tenant architecture. Key Highlights: 1. Secure API Gateway/BFF development 2. Creation of financial modules with Boletos and Pix 3. Management of WhatsApp integrations and AI logic **Main Responsibilities:** **Security and BFF:** Build a secure API Gateway/BFF to eliminate frontend exposure of API keys (Vono, Fitbank, Evolution API, and others), ensuring credential protection and implementing authentication and rate limiting. **Financial Module:** Develop logic for generating Boletos and Pix via Fitbank, including resilient Webhooks for automatic invoice settlement. **WhatsApp Integration:** Manage Docker instances (Evolution API/Baileys and others), configuring webhooks to receive messages, status updates, and downtime alerts. **Artificial Intelligence (Gemini):** Move Prompt Engineering logic to the backend to protect intellectual property and establish a persistent history for the AI. **Multi\-tenant Architecture:** Configure strict Security Rules in Firestore and Custom Claims (Auth) to ensure complete data isolation between different companies. **Mandatory Requirements:** Advanced proficiency in Node.js and TypeScript. Deep professional experience with Firebase (Cloud Functions, advanced Firestore, Auth) and GCP (Cloud Run). Experience building and consuming RESTful APIs and Webhooks. Strong foundation in security **Minimum Education:** Bachelor's Degree