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Full Stack MERN Developer

2 weeks, 6 days ago
Argentina, Brazil, Chile, Peru, Colombia, Uruguay
Full-time
Senior
Full-stack Engineer
Software Development
AWS Azure CI/CD Express.js Looker MongoDB Mongoose Node.js React REST API SAML SendGrid Tableau Twilio
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Workana

Workana

Workana: Leading Latam's freelance marketplace, connecting top talent with innovative projects for remote and freelance work.

Internet Software & Services
1K-5K
Founded 2012
$3M raised
View All Jobs 74

Description

  • Maintain, debug, and scale a production MERN application.
  • Build secure data-export and analytics APIs for Microsoft Power BI and other external platforms.
  • Design large-data workflows using MongoDB cursors, batching, Node.js streams, CSV exports, and Amazon S3.
  • Implement authentication, authorization, API credentials, rate limiting, and organization-level data isolation.
  • Optimize MongoDB and Mongoose schemas, indexes, aggregation pipelines, Atlas Search, and database queries.
  • Build reliable asynchronous workflows with concurrency controls, retries, idempotency, leases, locks, timeouts, and failure recovery.
  • Develop end-to-end features across React, Redux, Node.js, and Express.
  • Integrate and maintain third-party services including AI/NLP tools, Twilio, SendGrid, Stripe, Microsoft services, Slack, and AWS.
  • Improve application performance, security, reliability, logging, monitoring, and observability.
  • Collaborate with the CTO on technical solutions, prioritization, production issue resolution, documentation, and platform improvements.

Requirements

  • 5+ years of professional full-stack development experience with the MERN stack.
  • Advanced experience with MongoDB, Express, React, Node.js, and Redux.
  • Strong experience designing backend systems and production-grade REST APIs, including API versioning.
  • Experience building data-access, reporting, analytics, or data-export APIs.
  • Strong understanding of authentication, authorization, and multi-tenant application security.
  • Experience with Node.js streams, backpressure, batching, and large-dataset processing.
  • Knowledge of concurrency, retries, idempotency, timeouts, failure recovery, and asynchronous processing.
  • Deep experience with MongoDB indexes, aggregation pipelines, query optimization, explain(), and Mongoose.
  • Strong AWS experience with EC2, S3, IAM, CloudFront, and WAF.
  • Availability to work U.S. West Coast/Los Angeles business hours; fluent English communication required.
  • Preferred: Experience with Power BI, Power Query, Tableau, Looker, OData, AWS messaging/serverless services, SaaS platforms, CI/CD, automated testing, or integrations such as Twilio, Stripe, Microsoft Graph, Azure, Okta, SAML, Slack, and AI/LLM systems.

Benefits

  • USD compensation.
  • Fully remote, long-term opportunity.
  • Direct collaboration with the technical founder and CTO.
  • Professional growth toward a technical lead position.

Interested in this position?

Apply directly on the company website

Apply Now

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