Working remotely in a full-time capacity, the Backend Platform Engineer will build and maintain a secure B2C API and authorization boundary, integrating various technologies while collaborating closely with cross-functional teams to deliver high-quality solutions. Key responsibilities Build the versioned REST/OpenAPI contract and modular TypeScript BFF with stable success/error envelopes and contract-drift CI gates Integrate Cognito identity with application sessions, implementing account management features and maintaining independent customer and operator identities Design PostgreSQL domain models and implement durable asynchronous operations, ensuring data integrity and efficient processing Required qualifications Strong experience in TypeScript backend engineering, particularly with Node.js and Fastify Advanced knowledge of PostgreSQL security, data modeling, and transaction management Experience with identity and authorization systems, particularly integrating OIDC providers like Cognito Proficiency in distributed work execution concepts, including transactional outbox and message queuing Familiarity with modern Python development and integration with TypeScript applications