# Frontend React Developer

**Empresa:** Kstack
**Local:** SP
**Modalidade:** Presencial
**Contrato:** CLT
**Publicada em:** 2026-09-08

## Descrição

Role Summary

We are looking for a creative, detail-oriented Frontend React Developer with hands-on experience building dynamic, high-performance web applications. The ideal candidate has a strong foundation in front-end architecture, writes clean and maintainable code, and has a solid understanding of modern JavaScript frameworks and development practices.

In this role, you will leverage modern AI-powered productivity tools and work closely with UI/UX designers, back-end engineers, and global cross-functional teams to build scalable user interfaces and deliver exceptional user experiences.

Key Responsibilities

Design, develop, and maintain efficient, reusable, and reliable React.js components for enterprise web applications.

Partner with UI/UX designers to translate wireframes, mockups, and user stories into polished, high-quality user interfaces.

Optimize front-end applications for speed, performance, responsiveness, and cross-browser compatibility.

Integrate front-end applications with RESTful APIs, GraphQL endpoints, and back-end services.

Actively participate in code reviews, sprint planning, and daily stand-ups within an Agile development environment.

Troubleshoot and resolve front-end defects, memory leaks, and performance bottlenecks across modern browsers.

Create and maintain technical documentation, component libraries, and front-end development standards.

Stay current with emerging front-end technologies, web standards, and engineering best practices to drive continuous improvement.

Leverage AI-powered development tools to accelerate feature development, code refactoring, unit testing, and technical documentation.

Technical & Mandatory Skills

React & Front-End Core Stack

3+ years of professional front-end development experience building modern web applications with React.js.

Strong proficiency in JavaScript (ES6+), TypeScript, HTML5, and CSS3/SCSS.

Solid understanding of state management tools and patterns, including Redux Toolkit, Context API, Zustand, or Recoil.

Hands-on experience with asynchronous request handling, API integration, and JSON data using Axios or the Fetch API.

Familiarity with modern front-end build pipelines and development tools, including Webpack, Vite, Babel, and npm/pnpm/yarn.

Strong understanding of responsive design frameworks and styling libraries such as Tailwind CSS, Material UI, Styled Components, or Bootstrap.

Experience with Git-based version control and development workflows using platforms such as GitHub, Azure DevOps, or GitLab.

Quality & Engineering Standards

Good understanding of testing frameworks and tools such as Jest, React Testing Library, or Cypress.

Understanding of browser rendering behavior, DOM manipulation, and front-end performance optimization techniques.

AI Tools Experience

Hands-on experience using modern AI-powered tools to improve developer productivity, including:

GitHub Copilot or Cursor for AI-assisted code generation and refactoring.

ChatGPT, Claude, or enterprise Generative AI assistants for rapid debugging, algorithm design, and technical documentation.

AI-powered tools for code analysis, testing, or code completion.

Preferred Qualifications

Exposure to modern React frameworks such as Next.js, as well as Server-Side Rendering (SSR) and Static Site Generation (SSG) concepts.

Familiarity with CI/CD pipelines for front-end application deployments.

Basic understanding of Web Content Accessibility Guidelines (WCAG) and SEO best practices.

Familiarity with Agile project management tools such as Azure DevOps or Jira.

Soft Skills

Communication: Strong written and verbal English communication skills, with the ability to collaborate effectively with global development teams.

Analytical Thinking: Strong problem-solving skills with excellent attention to detail and UI precision.

Ownership & Accountability: Ability to take ownership of features from technical task breakdown through production release.

Adaptability: Eagerness and ability to quickly learn new libraries, frameworks, and engineering tools.

## Habilidades

- React.js
- JavaScript (ES6+)
- TypeScript
- HTML5
- CSS3/SCSS
- Redux Toolkit
- Axios
- Git

**Página original:** https://www.123vagas.com.br/vaga/frontend-react-developer-sp-80665