Junior Full-Stack Engineer - Cloud Infrastructure & Agentic AI

Location: LATAM - Brazil

Employment: Full-time

Compensation: Up to USD 3,000/month

Experience: 1–2 years

FitNext Exclusive: TBD

Company Overview

We’re an AI-native company building applications powered by modern cloud infrastructure and agentic AI. We’re looking for a curious, hands-on junior engineer who enjoys building software, working with cloud infrastructure, and using AI tools to accelerate development.

The Challenge

You’ll combine full-stack development with cloud infrastructure, helping build, deploy, and maintain applications while integrating agentic AI solutions into products and internal workflows.

This role is ideal for someone who enjoys learning by building, takes initiative, and uses AI tools as a core part of their engineering workflow.

Must-Have Requirements

- Junior profile: 1–2 years of software engineering experience. This position is exclusively for junior candidates.

- Full-stack development: Hands-on experience building frontend features, backend services, APIs, and working with databases.

- Cloud infrastructure: Strong practical knowledge of AWS and Cloudflare, including deploying and troubleshooting applications.

- AI-native mindset: Regularly uses AI coding tools and agents to build, debug, test, and learn.

- AI code validation: Able to review, understand, test, and explain AI-generated code and technical decisions.

- Development workflows: Familiarity with Git, CI/CD, and deployment processes.

- Ownership and curiosity: Proactive, eager to learn, and interested in both software development and infrastructure.

Nice-to-Have

- Experience with LLM APIs, AI agents, tool calling, or agentic workflows.

- Experience automating internal processes or integrating AI into applications.

- Familiarity with Infrastructure as Code (IaC).

- Personal or professional projects combining full-stack development, cloud infrastructure, and AI.

What You’ll Do

- Build and maintain frontend features, backend services, APIs, and databases.

- Deploy and manage infrastructure on AWS and Cloudflare.

- Improve application security, monitoring, reliability, and performance.

- Automate development and deployment workflows.

- Build or integrate agentic AI solutions into applications and internal processes.

- Use AI throughout development while ensuring code quality, reliability, and security.

Selection Process

The selection process will be open to shortlisted candidates.