Frontend Developer - Relay experienced (Based in Europe or Brazil)

Emagine Portugal is looking for a Senior Frontend Engineer to help shape and build user-facing applications on our clients Duplex Platform.

You’ll work with TypeScript, React, Vite, GraphQL, Relay, and Storybook to deliver intuitive, high-performance experiences. Your role involves implementing scalable frontend solutions, collaborating across teams, and contributing to a modern development culture focused on quality, performance, and continuous improvement.

• Build and maintain React-based frontend applications using TypeScript.


• Work closely with backend engineers and designers to implement business requirements.


• Write clean, maintainable code with strong test coverage (unit, integration, e2e).


• Optimize performance with industry best practices like code-splitting and lazy loading.


• Participate in code reviews and knowledge sharing within the team.


• Contribute to documentation and the evolution of frontend standards.


• Help maintain CI/CD pipelines and deployment processes for frontend code.

• >7 years of experience with frontend development using TypeScript, React, and Vite.


• Solid experience with component-based development using Material UI (MUI) and Storybook.


• Experience working with GraphQL APIs, ideally with Relay.


• Strong understanding of performance optimization and security standards.


• Passion for clean code, testing, and continuous learning.


• Comfortable working in agile, cross-functional teams.


• Self-motivating and proactive work attitude.


• Bachelor’s degree in Computer Science or equivalent experience.


• Experience with containerization and cloud platforms (Docker, Kubernetes, Azure).