Full Stack Developer – MERN

This is a fully remote position, open to applicants in Brazil, +5 more countries.

📋 Description

• Oversee, troubleshoot, and enhance a production-level MERN application.

• Create secure Data Export and Analytics APIs for Microsoft Power BI and other external platforms.

• Design workflows for large datasets utilizing MongoDB cursors, batching, Node.js streams, CSV exports, and Amazon S3.

• Implement secure multi-tenant access, encompassing authentication, authorization, API credentials, rate limiting, and strict organization-level data isolation.

• Develop and refine MongoDB and Mongoose schemas, indexes, aggregation pipelines, Atlas Search configurations, and database queries.

• Evaluate query performance using explain() and apply suitable optimization techniques.

• Construct dependable asynchronous workflows with concurrency controls, retries, idempotency, leases, locks, timeouts, and recovery from failures.

• Create new features end-to-end utilizing React, Redux, Node.js, and Express.

• Integrate and manage third-party services, including AI/NLP tools, Twilio, SendGrid, Stripe, Microsoft services, Slack, and AWS services.

• Enhance application performance, security, reliability, logging, monitoring, and observability.

• Investigate and resolve production challenges within a large, established application.

• Work closely with the CTO to define technical solutions, prioritize tasks, and deliver dependable production features.

• Contribute to technical documentation, development standards, and ongoing platform improvement.

⛳️ Requirements

• 5+ years of professional experience in developing full stack applications using the MERN stack.

• Advanced proficiency with MongoDB, Express, React, and Node.js.

• Strong background in designing and developing backend systems and production-grade APIs.

• Proven track record in building data-access, reporting, analytics, or data-export APIs.

• Comprehensive understanding of REST APIs, API design, and API versioning.

• Solid grasp of authentication, authorization, and security in multi-tenant applications.

• Practical experience with Node.js streams, backpressure, batching, and processing large datasets without fully loading them into memory.

• Strong knowledge of concurrency, retries, idempotency, timeouts, failure recovery, and asynchronous processing.

• Extensive experience with MongoDB indexes, aggregation pipelines, query optimization, explain(), and Mongoose.

• Strong expertise in AWS, particularly with EC2, S3, IAM, CloudFront, and WAF.

• Robust experience with React and Redux in established production environments.

• Availability to work in accordance with U.S. West Coast / Los Angeles business hours.

🏝️ Benefits

• Compensation offered in USD.

• Fully remote, long-term position.

• Direct collaboration with a technical founder and CTO.

• Opportunities for professional growth towards a technical lead role.