Senior Full Stack MERN Developer - Remote

Overview

We are a U.S.-based SaaS startup looking for a Senior Full Stack MERN Developer to work directly with our hands-on CTO. This is a senior role for someone who can not only ship features but also improve architecture, enforce clean code practices, and scale an MVP into a production-grade SaaS platform.

In Short

• Take ownership of an existing MERN MVP and evolve it into a scalable, production-ready product
• Refactor and improve messy or inefficient code for clarity, maintainability, and performance
• Debug and resolve complex cross-layer issues quickly (MongoDB, Node.js, React, CI/CD)
• Design and optimize MongoDB schemas, indexes, Atlas Search, and triggers
• Build event-driven workflows with MongoDB triggers
• Integrate AI/LLM services (OpenAI, AWS Comprehend, embeddings, NLP features) into production apps
• Support and improve Twilio-based messaging and webhook integrations
• Contribute to new product features end-to-end (backend + frontend)

Requirements

• Proven experience with MERN stack
• Strong understanding of software architecture and design patterns
• Experience with CI/CD processes
• Ability to work collaboratively with a remote team
• Strong problem-solving skills
• Familiarity with AI/LLM services integration
• Experience with Twilio and messaging integrations

Benefits

• Work directly with a hands-on CTO
• Opportunity to shape the architecture of a SaaS platform
• Flexible working hours aligned with U.S. West Coast
• Collaborative work environment