Jobs

Our portfolio companies are seeking talented, passionate individuals to tackle the most meaningful challenges in learning, health, and work.

Senior Full Stack Engineer

Messa AI

Messa AI

Software Engineering
Argentina
Posted on Jan 5, 2026

Location

Argentina

Employment Type

Full time

Location Type

Remote

Department

Engineering

Role Overview
We’re looking for a Senior Full Stack Engineer to take a leading role in designing and building key parts of our product. You’ll work across the stack — from polished, responsive interfaces to reliable backend systems — and help set the technical direction as we scale. This role is hands-on, collaborative, and ideal for someone who enjoys moving quickly while keeping a high bar for quality.

What You’ll Do

  • Build and own end-to-end product features.

  • Design clean, intuitive, high-performance user interfaces.

  • Develop and maintain robust APIs and backend services.

  • Integrate AI agents and workflows into product experiences.

  • Ensure reliability, observability, and performance in production.

  • Contribute to engineering standards and mentor teammates.

Technical Requirements

  • Expert-level proficiency in React and modern JavaScript/TypeScript.

  • Strong experience with server-side development and API design.

  • Proven ability to create high-quality, user-friendly UI.

  • Experience incorporating AI/LLM agents into development workflows or features.

  • Solid experience managing, monitoring, and debugging production systems.

Nice to Have

  • Experience building browser extensions.

  • Experience with desktop app development (Electron, Qt, etc.).

  • Familiarity with AWS or another major cloud platform.

  • Experience using Docker across development and production.