Senior Full Stack Developer, Node + React

Workana; Teletrabalho; BRL 325.000 - 435.000; Tempo integral

Resumo da oferta

A U.S.-based SaaS startup is looking for a Senior Full Stack MERN Developer to enhance an existing MVP into a scalable SaaS product. You will address complex technical challenges, refactor code, and integrate AI services. Collaboration will happen directly with the CTO, and candidates must be based in Brazil or Argentina to align with U.S. West Coast time zones. This remote role offers growth into a lead position within the expanding team.

Serviços

Direct collaboration with a technical founder/CTO

Opportunity to grow into a lead role

Qualificações

• Expert in MERN stack: MongoDB, Express.js, React.js, Node.js.
• Deep knowledge of MongoDB: indexes, performance, aggregation, triggers.
• Strong backend/infra skills: Node.js async/memory, AWS, CI/CD.

Responsabilidades

• Take ownership of an existing MERN MVP and evolve it into a scalable product.
• Refactor and improve messy or inefficient code.
• Debug and resolve complex cross-layer issues.

Conhecimentos

MERN stack expertise

Deep MongoDB knowledge

Node.js async/memory

AWS knowledge

AI services integration experience

Excellent English communication

Descrição da oferta de emprego

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.

We are prioritizing candidates based in Argentina or Brazil to align with U.S. West Coast (Los Angeles) working hours.

What You’ll Do

• 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

• Expert in MERN stack: MongoDB, Express.js, React.js, Node.js
• Deep MongoDB knowledge: indexes, performance, aggregation, triggers
• Strong backend / infra skills: Node.js async / memory, AWS (EC2, S3, Lambda), CI / CD pipelines
• Experience integrating AI services into production apps
• Excellent English communication (mandatory)
• Availability during U.S. West Coast working hours (PST / PDT)
• Based in Argentina or Brazil

Benefits

• Direct collaboration with a technical founder / CTO
• Long-term role solving real production challenges (not just CRUD apps)
• Remote role with U.S. time zone collaboration
• Opportunity to grow into a lead role as the team expands