Senior Frontend Engineer (React)

Senior Frontend Engineer (React)

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior Frontend Engineer (React) based in Brazil. This role offers the opportunity to build modern digital experiences for international clients through scalable and high-performance frontend solutions. You will work on complex web applications using React and modern frontend technologies while collaborating with talented engineering, design, and product teams. The position focuses on creating responsive, accessible, and optimized user experiences that deliver measurable business value. You will contribute to frontend architecture decisions, reusable component development, and continuous improvements in code quality and performance. The role is ideal for an experienced engineer who enjoys solving UI challenges and working in a collaborative, remote-first environment. You will have exposure to global projects, innovative technologies, and opportunities for continuous professional growth. Your expertise will directly influence the quality, scalability, and usability of products used by customers worldwide.

Accountabilities:

The Senior Frontend Engineer will be responsible for designing, developing, and improving modern frontend applications while ensuring excellent user experiences, maintainable architectures, and strong engineering standards.

• Develop and maintain modern frontend applications using React and related technologies.
• Build responsive, accessible, and high-performance user interfaces across digital products.
• Collaborate with designers to transform UI/UX concepts into production-ready experiences.
• Create reusable React components and scalable frontend architectures.
• Integrate frontend applications with REST APIs and GraphQL services.
• Optimize applications for performance, SEO, speed, and overall user experience.
• Participate in technical discussions, architecture decisions, and code reviews.
• Troubleshoot frontend issues and continuously improve application reliability and performance.
• Apply frontend best practices focused on maintainability, scalability, and clean code.
• Collaborate with backend engineers, designers, product managers, and other cross-functional teams throughout the development lifecycle.

Requirements:

• Senior-level experience in frontend development.
• 6+ years of professional experience working with React.
• Strong knowledge of JavaScript (ES6+), HTML5, and CSS3.
• Deep understanding of modern React concepts and best practices, including:
• React components.
• Virtual DOM.
• Props and state management.
• Hooks.
• React lifecycle concepts.
• Experience with React Context API and/or Redux.
• Proven experience building responsive and user-focused web applications.
• Strong understanding of frontend performance optimization techniques.
• Experience consuming REST APIs and/or GraphQL services.
• Ability to design clean, maintainable, and scalable frontend architectures.
• Strong written and verbal English communication skills.
• Experience collaborating with distributed and cross-functional teams.

Benefits:

• Fully remote work model with home office flexibility.
• Competitive compensation based on experience and expertise.
• Career development plans supporting professional growth.
• Opportunity to work on international projects.
• Technical and conversational English development program.
• Access to wellness and fitness benefits.
• Games, competitions, and team engagement initiatives.
• Collaborative environment focused on learning and innovation.