# Full-Stack Developer (AI-First)

> Lago · Brazil (Remote) · Full-time · Posted 2026-04-30

**Workplace:** remote

**Department:** Dev

## Description

**Job Title:** Full-Stack Developer (AI-First)  
**Location:** Remote ( Brazil)  
**Schedule:** Monday - Friday. 9AM - 5PM EST - Full-Time (Flexible)  
**Salary Range:** $1,800 – $3,500 USD per month ($11 – $22 USD/hour)  
  
An AI-powered veterinary care ecosystem designed to serve 20,000+ clinics across 100+ countries. Powered by Marcia, a proprietary AI platform, it operates across six integrated portals and supports millions of users with tens of millions of concurrent sessions.

This is not a traditional engineering role. It is an AI-first environment where developers are expected to fully embrace agentic workflows, automation, and AI-assisted development to move faster and build smarter at scale.

**Role Overview**

We’re looking for a Full-Stack Developer who is not only technically strong but deeply experienced in AI-assisted development workflows. You will play a critical role in building and scaling a high-performance, globally distributed platform.

You should be comfortable working with tools like Claude Code and Cursor, orchestrating sub-agents, and leveraging AI across the development lifecycle. This role requires someone who can think in systems, optimize performance, and build infrastructure that scales seamlessly under heavy load.

### Responsibilities

**AI-Assisted Development**

-   Leverage AI tools (Claude Code, Cursor) as primary development environments
-   Design and orchestrate agentic workflows and sub-agents
-   Use AI to accelerate development, testing, and debugging

**Full-Stack Development**

-   Build and maintain scalable frontend and backend systems
-   Develop across multiple portals (Consumer, Clinic, Enterprise, Platform, Referral, Admin)
-   Ensure clean, maintainable, and high-quality code

**Performance & Scalability**

-   Optimize database queries and system performance
-   Design and manage caching layers and connection pools
-   Build systems capable of handling millions of concurrent users

**Code Quality & Security**

-   Ensure all code passes automated review pipelines (5+ bots) before human review
-   Meet SonarCloud quality gates on first push
-   Maintain strict security best practices and hygiene

**System Design**

-   Architect distributed systems for global scale
-   Ensure reliability, fault tolerance, and high availability
-   Collaborate on infrastructure and backend architecture decisions

## Requirements

-   Proven experience as a Full-Stack Developer in high-scale environments
-   Strong proficiency in both frontend and backend development
-   Hands-on experience with AI-assisted coding tools and workflows
-   Deep understanding of scalability, performance optimization, and system design
-   Experience optimizing databases, APIs, and distributed systems
-   Strong knowledge of caching strategies and concurrency handling
-   Ability to pass strict automated code quality and security standards
-   Comfortable working in a fast-paced, high-performance engineering culture
-   Strong communication skills in English

**Nice-to-Haves**

-   Experience with agent-based or autonomous development systems
-   Familiarity with large-scale SaaS or platform ecosystems
-   Experience working with global, distributed systems
-   Background in high-traffic applications or real-time systems

**Ideal Candidate Profile**

-   AI-first thinker who naturally integrates automation into workflows
-   Highly technical and performance-driven
-   Systems-oriented with strong architectural instincts
-   Detail-oriented with a strong focus on code quality and security
-   Thrives in high-scale, high-impact environments
-   Fast executor who values efficiency, speed, and precision

**Additional Details**

-   Industry: Technology & IT
-   Number of Positions: 7
-   Job Type: Contractor (Indefinite)
-   Start Date: ASAP

## Benefits

-   **Remote Work Flexibility** – Work from anywhere while staying connected with a high-performing team.
-   **Career Growth Opportunities** – Expand your expertise in digital marketing and client management.
-   **Supportive Team Culture** – Collaborate with passionate professionals who value teamwork and innovation.

_As part of our recruitment process, all candidates are kindly asked to read, understand, and agree to_ [_Lago’s Confidentiality and Non-Circumvention Agreement_](https://docs.google.com/document/d/e/2PACX-1vT9d3IW-QW-lGpt7ZIU22uqvADQUVESDzQPAopkpb1Tzf6OVERy198VBtGBpnpKXw/pub)_. This ensures a respectful and professional experience for everyone involved._

## Apply

[Apply at Lago](https://apply.workable.com/lago-1/j/3E3B2BC7E4/apply)

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