Middle Frontend Developer

sigmasoftware2· BU003 (s9uNb)
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🌍 Remote📍 Brasília📍 Brasília, DF, Brazil📍 DF📍 brFull time

About this role

Company Description

Do you enjoy building sleek, high-performance web applications? We are looking for a Middle Frontend Developer to join our Front-end Development Team. This is a full-time remote opportunity based in Brasília, Federal District, Brazil, with flexibility to work from anywhere.

At Sigma Software, we partner with global innovators to deliver cutting-edge solutions across industries. In this role, you will work on modern web applications using React.js and GraphQL, collaborating with talented designers, backend developers, and QA engineers to create seamless user experiences.

Why join us? You’ll benefit from remote work flexibility, professional growth opportunities, and the chance to work on international projects with a supportive, skilled team.

CUSTOMER
Our customer is a technology-driven organization delivering modern web solutions to global clients. They focus on creating scalable, high-performance applications with intuitive user interfaces, leveraging cutting-edge frameworks and tools. Their teams work across diverse industries, ensuring each product meets the highest standards of usability, performance, and security.

PROJECT
The project involves developing and maintaining advanced web applications using React.js and GraphQL. The goal is to deliver seamless, responsive, and user-friendly experiences for end users while ensuring scalability and performance. You will collaborate closely with backend developers, designers, and QA engineers to build robust solutions.

 

Job Description

 

  • 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

Qualifications

  • 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

 

    Additional Information

    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

     

    Frequently Asked Questions

    Is the salary disclosed for the Middle Frontend Developer position at sigmasoftware2?
    The salary for this Middle Frontend Developer role at sigmasoftware2 is not publicly listed. Click "Apply Now" to learn more about the compensation package on their official careers page.
    Is the Middle Frontend Developer job at sigmasoftware2 remote?
    Yes, this Middle Frontend Developer position at sigmasoftware2 is remote, with team members based in Brasília, Brasília, DF, Brazil, DF, br. You can work from home or anywhere in the supported regions.
    Is the Middle Frontend Developer role at sigmasoftware2 full-time or part-time?
    This is listed as a Full time position. It is posted as a Middle Frontend Developer role in the BU003 (s9uNb) department at sigmasoftware2.
    Which team or department does the Middle Frontend Developer at sigmasoftware2 belong to?
    This Middle Frontend Developer position is part of the BU003 (s9uNb) department at sigmasoftware2. See the full job description for more information about the team structure and responsibilities.
    How do I apply for the Middle Frontend Developer position at sigmasoftware2?
    Click the "Apply Now" button on this page. You will be redirected to sigmasoftware2's official application portal hosted on smartrecruiters where you can submit your application directly.
    When was the Middle Frontend Developer job at sigmasoftware2 posted?
    This Middle Frontend Developer position at sigmasoftware2 was posted on Mar 10, 2026. Apply as soon as possible — early applications are often reviewed first.
    Middle Frontend Developer
    sigmasoftware2
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