Full-Time Middle ReactJS Developer

Sigma Software is hiring a remote Full-Time Middle ReactJS Developer. The career level for this job opening is Experienced and is accepting São Paulo, Brazil based applicants remotely. Read complete job description before applying.

Sigma Software

Job Title

Middle ReactJS Developer

Posted

Career Level

Full-Time

Career Level

Experienced

Locations Accepted

São Paulo, Brazil

Job Details

  • Develop and maintain user interface components using React, TypeScript, and the ConnectWise Asio Front-end framework
  • Collaborate with PHP Back-end developers to integrate APIs and ensure smooth client-server communication
  • Implement responsive, accessible, and high-performing UI layouts following UX designs and branding guidelines
  • Participate in migrating legacy interfaces to a modern React architecture
  • Write clean, maintainable, and testable code using modern React patterns (hooks, context, functional components)
  • Contribute to shared UI libraries and ensure component consistency across the platform
  • Debug, test, and optimize Front-end performance and browser compatibility
  • Work with QA and DevOps teams to ensure smooth releases via CI/CD pipelines
  • Participate in code reviews, sprint planning, and daily stand-ups within an Agile team
  • Learn from and adopt new technologies and practices of Senior engineers to improve quality and productivity

Requirements:

  • 3–5 years of professional experience in Front-end development, with at least 2 years of experience using React in production
  • Solid understanding of JavaScript (ES6+), HTML5, and CSS3
  • Experience building and consuming RESTful APIs, preferably with PHP Back-ends
  • Knowledge of state management (Redux, Zustand, Recoil, or similar)
  • Familiarity with component-based design, reusability, and responsive layouts
  • Experience with Front-end tooling (Webpack, Vite, ESLint, Prettier, npm/yarn)
  • Understanding of Git-based workflows and Agile development practices
  • Basic knowledge of performance optimization and browser debugging tools

Personal Profile:

  • Good communication skills and the ability to collaborate effectively within cross-functional teams
  • A proactive, detail-oriented approach and a willingness to learn new technologies and frameworks

FAQs

What is the last date for applying to the job?

The deadline to apply for Full-Time Middle ReactJS Developer at Sigma Software is 21st of December 2025 . We consider jobs older than one month to have expired.

Which countries are accepted for this remote job?

This job accepts [ São Paulo, Brazil ] applicants. .

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