Full-Stack Web Platform Maintenance & Support Developer (React / Next.js / Ruby on Rails)

This is a remote position.

We are looking for a reliable and detail-oriented Full-Stack Developer to manage the daily performance, stability, and continuous improvement of a web-based automotive marketplace platform.

This is not a pure development role—you will take ownership of the platform’s day-to-day health, including monitoring, testing, troubleshooting, and implementing small improvements across both frontend and backend systems.

Key Responsibilities

Platform Monitoring & Testing

• Perform daily checks on critical website functions (search, listings, checkout, user login)
  
• Identify bugs, broken flows, and performance issues
  
• Monitor uptime and ensure smooth system performance
  

Maintenance & Support (Frontend + Backend)

• Maintain and support the full-stack application
  
• Work across:
  
• Frontend: React / Next.js
  
• Backend: Ruby on Rails
  
• Troubleshoot and resolve issues across the stack
  
• Ensure API integrations function correctly
  

Updates & Continuous Improvement

• Implement minor feature updates and UI enhancements
  
• Modify frontend components and backend logic as needed
  
• Improve platform performance and usability over time
  

System Monitoring & Reliability

• Monitor logs, errors, and alerts
  
• Use tools like Sentry (or similar) for error tracking
  
• Proactively identify and resolve risks before impacting users
  

Documentation & Process Improvement

• Maintain and update technical documentation
  
• Document fixes, updates, and known issues
  
• Contribute to improving testing and deployment workflows
  

Requirements

Technical Environment

• Frontend: React, Next.js, Tailwind / modern UI libraries
  
• Backend: Ruby on Rails, REST APIs
  
• Database: PostgreSQL / MySQL
  
• Other: JWT authentication, analytics tools, error monitoring tools (e.g., Sentry), payment integrations (Stripe / PayPal)
  

Essential

• Strong experience with:
  
• React / Next.js
  
• Ruby on Rails
  
• Experience supporting and maintaining live production systems
  
• Ability to debug across frontend and backend
  
• Experience with APIs and integrations
  
• Strong testing and QA mindset
  

Desirable

• Database management (PostgreSQL/MySQL)
  
• Performance optimization
  
• Error monitoring tools (Sentry, Bugsnag)
  
• Basic DevOps (deployments, environments)
  
• Experience with eCommerce or marketplace platforms