Sigma Software
Middle Frontend Developer
Remote Frontend Development role with clear candidate location fit.
PostedJul 5, 2026
Eligible countries1 accepted country
Seniority signalMiddle
Work settingRemote
Accepted candidate locations
Brazil
Role overview
Middle Frontend Developer
Requirements and responsibilities
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Details
- Develop and maintain web applications using React.js and GraphQL
- Collaborate with designers and backend developers to build scalable, high-performance applications
- Write clean, maintainable, and efficient code following best practices
- Implement responsive and user-friendly UI components
- Optimize applications for performance and scalability
- Debug and troubleshoot issues across multiple browsers and devices
- Participate in code reviews and contribute to team knowledge-sharing
- (Optional) Write and maintain end-to-end tests using Playwright
- 2+ years of experience in front-end development with React.js
- Strong understanding of JavaScript (ES6+), HTML5, and CSS3
- Hands-on experience with GraphQL (Apollo Client or similar)
- Familiarity with React Hooks, Context API, Redux (optional)
- Experience with RESTful APIs and third-party integrations
- Understanding of component-based architecture and state management
- Knowledge of performance optimization and debugging techniques
- Upper-Intermediate English level
- Bachelor’s degree in Computer Science or related field
WILL BE A PLUS
- Experience with Playwright or other automated testing frameworks
- Familiarity with CI/CD pipelines and DevOps practices
PERSONAL PROFILE
- Detail-oriented developer with a passion for creating seamless user experiences
- Strong problem-solving skills and ability to work in a collaborative environment
- Proactive in identifying performance improvements and UI enhancements
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