Apply for Senior Backend Engineer (NestJS) at Techkraft Inc in Kathmandu, Nepal. Full-time opportunity. Explore requirements and apply online on SpireJob Nepal.
The Senior Backend Engineer will design, develop, and maintain scalable backend services, REST APIs, and real-time WebSocket features using NestJS, Node.js, TypeScript, PostgreSQL, MongoDB, and Redis. Responsibilities include building asynchronous processing queues, implementing policy-based authorization, integrating third-party OAuth2 APIs, and protecting sensitive data with field-level encryption. Candidates must have 4+ years of hands-on production experience building APIs with NestJS and Node.js in TypeScript, along with strong skills in PostgreSQL, MongoDB, and Redis. Additional requirements include experience with JWT authentication, REST API design with OpenAPI, unit testing with Jest, and containerization using Docker. Fintech or payments domain expertise and familiarity with multi-tenant SaaS architectures are considered strong assets
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