Senior Software Engineer (Node.js) Important: This role is open only to candidates currently living in Mexico or Latin America . Applications from other regions will not be considered. Join MagmaLabs, a leading provider of expert software engineers dedicated to helping companies achieve their goals across diverse and impactful industries. We are actively seeking a seasoned Senior Software Engineer (Node.js) to join our fully remote team. In this pivotal role, you will apply your passion for building scalable, high-performance backend systems to solve complex challenges for our clients in healthtech, e-commerce, fintech, and other fast-growing sectors. You will play a key role in designing, developing, and maintaining modern backend architectures powered by Node.js and cloud-native technologies, directly contributing to our clients’ success while driving technical excellence across projects. About the Role Are you a seasoned Backend Engineer passionate about building reliable, secure, and scalable systems with Node.js? As a Senior Software Engineer (Node.js), you will take ownership of architectural decisions, lead backend initiatives, and ensure best practices across high-traffic APIs, SaaS platforms, and distributed systems. You’ll balance delivery speed with long-term maintainability, performance optimization, security, and observability. Your contributions will directly impact system reliability, developer productivity, and business scalability. If you thrive on solving complex backend challenges using modern JavaScript/TypeScript ecosystems, we want to hear from you. Responsibilities - Lead the architectural design, development, and continuous evolution of scalable backend applications using Node.js (preferably with TypeScript). - Design and implement RESTful and/or GraphQL APIs with clear versioning, validation, documentation, and error-handling standards. - Optimize database performance (primarily PostgreSQL), including schema design, indexing strategies, query tuning, and transaction management. - Implement asynchronous processing, background jobs, and event-driven workflows using modern queue or messaging systems. - Design resilient integrations with third-party APIs and services (timeouts, retries, circuit breakers, monitoring). - Ensure code quality and reliability through automated testing (unit, integration, and contract tests). - Participate in code reviews, maintain high engineering standards, and actively mentor team members. - Collaborate cross-functionally with product managers, designers, and other engineers to deliver end-to-end solutions. - Contribute to infrastructure and deployment processes (Docker, Kubernetes, CI/CD pipelines). - Improve production reliability through monitoring, logging, tracing, and performance optimization. - Maintain clear technical documentation, including architecture decisions and operational guidelines. - Take ownership of complex technical initiatives and drive them to completion independently. Requirements - Minimum of 7 years of software development experience, with at least 5 years focused on backend development using Node.js in production environments. - Strong proficiency in TypeScript (or modern JavaScript with willingness to work in TypeScript). - Experience with backend frameworks such as NestJS, Express, or Fastify. - Solid expertise with relational databases (preferably PostgreSQL), including schema design and query optimization. - Experience with caching and/or asynchronous processing systems (e.g., Redis, message brokers, queues). - Hands-on experience with automated testing frameworks (e.g., Jest or similar) and CI/CD pipelines. - Strong understanding of secure backend practices (authentication, authorization, input validation, secrets management, rate limiting). - Experience working with containerization and cloud environments. - Proficiency with Git and collaborative development workflows. - Strong problem-solving skills and ability to thrive in a remote-first environment. - Excellent communication skills in English. - Demonstrated ability to take initiative and lead technical decisions independently. - Experience working within Agile development methodologies (Scrum, Kanban, etc.). Bonus Points If You Have - Experience designing microservices or refactoring monolithic systems. - Experience with event-driven architectures. - Familiarity with GraphQL or advanced API contract design. - Experience with Amazon Web Services, Google Cloud, or Microsoft Azure. - Hands-on experience with Docker and container orchestration. - Knowledge of distributed tracing and observability practices. - Exposure to frontend frameworks such as React.js. - Contributions to open-source projects or technical publications. About Us We are a team of innovative software professionals dedicated to delivering high-quality solutions across diverse industries. With a proven track record of success, we prioritize technical excellence, collaboration, and the continuous growth of our team members. We are committed to mentorship, skill expansion, and long-term career progression within a supportive, remote-first environment. Join us to work on impactful projects and advance your career as a Senior Node.js Engineer.

Senior Software Engineer (Node.js)

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