Full Stack Engineer

Full Stack Developer – São Paulo (Hybrid - three days in office) Employment Type : 1-Year Contract

Seniority Level : Associate

Industry : IT Services & Consulting / Technology / Information & Media

Role Overview

We're looking for an experienced Full Stack Developer to build and maintain tools and infrastructure for UX workflows. This position combines hands-on engineering with strong cross-functional collaboration.

Key Responsibilities

Prototyping : Develop high-fidelity, interactive prototypes using Polygon Studio for user feedback.

Asset & Template Management : Create and maintain shared asset repositories and design templates.

Component Library Development : Build reusable UI components in Lit / React for efficiency and consistency.

Collaboration & Communication : Work closely with stakeholders, including design, sales, and operations teams, on requirements and project updates.

Technical Implementation : Ensure cross-browser compatibility, performance, and write clean, documented code.

Platform Expertise : Develop deep knowledge of the Polygon platform.

User Onboarding & Support : Provide support and guidance to new users on the Formats Infrastructure.

Advertisement Campaign Support : Collaborate with internal teams to design and implement advertising features / campaigns aligned with product goals.

Operations Enablement : Partner with operations teams to streamline deployment, process workflows, and performance monitoring of delivered solutions.

Required Skills & Experience

Minimum 5 years' experience in Full Stack Development (mandatory).

Mandatory experience in Advertisement and Operations environments, with a proven ability to work cross-functionally to deliver integrated solutions.

Proficiency in front-end development (HTML, CSS / SASS, JavaScript / TypeScript).

Experience with modern web frameworks (e.g., Angular, React, Lit).

Skills in building responsive component libraries.

Ability to develop high-fidelity interactive prototypes.

Experience with design systems (e.g., Material UI).

Knowledge of version control and collaboration tools (e.g., Git).

Understanding of UX principles and user-centered design.

Experience with AngularJS applications (single-page, complex data-driven interfaces).

CSS proficiency (Bootstrap, Tailwind CSS, SASS, LESS).

Full stack development capabilities (Node.js, Python, Java, .NET).

Database knowledge (SQL, NoSQL).

Proven sales experience and ability to collaborate with sales teams to understand client needs and support solution selling.