Senior Node.js Developer
Location: Remote (Argentina)
Experience Level: Senior (10+ years)
Employment Type: Contract
About the Role
We are seeking a Senior Node.js Developer with 10+ years of professional software development experience to join our team on a contract basis, remote from Argentina. This role is for a hands-on senior engineer who can own backend architecture, write production-grade code, and operate independently with minimal oversight, while collaborating closely with cross-functional and distributed teams.
Key Responsibilities
Design, build, and maintain scalable, high-performance backend services and APIs using Node.js.
Own architecture decisions for microservices, RESTful APIs, and/or GraphQL endpoints.
Write clean, well-tested, maintainable code and drive engineering best practices (code reviews, testing standards, CI/CD).
Optimize application performance, scalability, and reliability in production environments.
Design and manage integrations with databases (SQL and NoSQL), caching layers, and message queues.
Collaborate with front-end engineers, DevOps,



product managers, and QA to deliver end-to-end features.
Lead technical design discussions and mentor mid-level and junior developers.
Troubleshoot and resolve complex production issues, including performance bottlenecks and system failures.
Participate in architecture reviews and contribute to technical roadmap and platform decisions.
Ensure security best practices are followed across the application stack (authentication, authorization, data protection).
Support CI/CD pipeline design and deployment automation in cloud environments.
Required Qualifications
10+ years of professional software development experience, with strong, hands-on expertise in Node.js.
Deep knowledge of JavaScript/TypeScript and asynchronous programming patterns.
Proven experience designing and building RESTful APIs and/or GraphQL services at scale.
Strong experience with relational databases (PostgreSQL, MySQL) and NoSQL da

📌 Senior Node.js Developer (Argentina)
🏢 Maitsys
📍 Argentina