Full-time

Lead Fullstack Engineer

Posted by Keystone Recruitment • Brazil, Brazil, Brazil

📍 Brazil, Brazil 🕒 February 26, 2026

About the Role

  • Title:
    Lead Fullstack Engineer (Remote)
  • Engagement:
    Hourly contract (independent contractor)
  • Location:
    Remote

Role Overview

We are seeking an experienced Fullstack Engineering Lead to design, build, and operate scalable web applications and production-grade LLM-powered systems. This role combines hands-on engineering with technical leadership across backend, frontend, cloud infrastructure, and AI evaluation frameworks.

You will own architecture decisions, release quality, and engineering standards while mentoring developers and collaborating cross-functionally to deliver reliable, high-impact solutions.

Key Responsibilities

  • Lead architecture and end-to-end delivery of scalable full-stack applications across frontend, backend, data, and infrastructure layers
  • Develop and maintain backend services using Python and
  • Build modern frontend applications using React
  • Own Docker contai...

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