**Position:** Semi-Senior Backend Developer Node.js **Modality:** Hybrid (preferably based in Querétaro) **Experience:** 3+ years **Purpose of the position** Develop, optimize, and maintain backend services using **Node.js**, ensuring a scalable, secure, and efficient architecture. The goal is to guarantee reliable communication between databases, external services, and the front-end. **Main responsibilities** * Development and maintenance of backend services with **Node.js** (JavaScript/TypeScript). * Design and implementation of **RESTful APIs** and integrations with internal and external systems. * Management of relational databases (**MySQL, PostgreSQL**). * Implementation of authentication, data validation, and basic security. * Optimization of backend process performance and stability. * Development of unit and integration tests. * Diagnosis and resolution of incidents in development and production environments. * Collaboration with **Frontend, QA, and DevOps** teams. * Participation in technical planning, estimations, and code reviews. * Documentation of endpoints, APIs, and technical logic. * Version control using **Git**. **Requirements** **Education:** * Engineering or Bachelor’s degree in Systems, Computer Science, or related field (preferred). **Experience:** * 3+ years in backend development. * Proven experience in production projects using **Node.js**. **Required technical knowledge:** * Node.js (Express, NestJS or Fastify). * MySQL / PostgreSQL databases. * Design and implementation of **REST APIs**. * Git. * Unit/integration testing (basic level). * Agile methodologies (**Scrum, Kanban**). **Key competencies** * Analytical thinking and ability to solve complex problems. * Autonomous and responsible work ethic. * Clear communication and teamwork skills. * Organization, discipline, and task follow-up. * Quality orientation and attention to detail. * Continuous learning. **Location and schedule** * Prol. Bernardo Quintana 300, Centro Sur, 76090 Santiago de Querétaro, Qro. * Monday to Friday from 8:00 am to 6:00 pm and Saturdays from 8:00 am to 1:00 pm Job type: Full-time Salary: $25,000.00 \- $34,000.00 per month Workplace: On-site