Senior Frontend Engineer (JavaScript / React)

✨ Job Offer: Front End Developer ✨

📍 Location: Paris 2

• Requires a minimum of 2 days per week in the office.
• Not open to full remote.

🚀 About the Role:

As a Front End Developer, you will be responsible for designing, developing, and maintaining the client-side components, user interfaces, and user experience of our software applications. This role requires deep expertise in front-end technologies and the ability to build performant, accessible, and scalable user interfaces while collaborating effectively within an agile team environment.

You will work closely with Engineering Managers, Product Managers, Back End Developers, Designers, and other team members to implement features, improve application architecture, and ensure high-quality deliverables that meet both technical and business requirements.

Curious by nature, you won't hesitate to dive into back-end tasks when the context calls for it, bringing a full-stack mindset to the problems you tackle. You will be part of a cross-functional squad and will contribute to technical decisions while maintaining high standards of code quality, performance, accessibility, and user experience.

Learn more about our Tech Team through our Medium.

🎯 Missions Clés:

🛠️ Technical Development:

• Design, develop, and maintain scalable React applications and reusable component libraries.
• Build responsive and accessible user interfaces following design systems and UI/UX best practices.
• Write clean, maintainable, and well-tested code following team standards and best practices.
• Participate in code reviews and provide constructive feedback to team members.
• Debug production issues and implement robust solutions.
• Contribute to technical documentation and architecture decisions.
• Integrate RESTful APIs and GraphQL endpoints into the front-end application.
• Optimize application performance, bundle size, and loading times.
• Implement state management solutions and client-side caching strategies.
• Participate in agile ceremonies and technical planning sessions.

🤝 Collaboration and Innovation:

• Actively participate within an autonomous mission team (PM, Designer, Engineering manager, Back End Developers) to clarify priorities and user needs.
• Contribute to technical discussions and architecture decisions.
• Collaborate with designers to implement pixel-perfect, accessible interfaces.
• Work with back-end developers to define API contracts and data structures.
• Participate in squad rituals and team meetings.
• Handle support requests and bug fixes within agreed SLAs.

✅ Quality & Best Practices:

• Write unit tests, integration tests, and end-to-end tests following TDD principles.
• Collaborate with QA team to ensure comprehensive test coverage.
• Participate in pair programming sessions with team members.
• Monitor application performance, Core Web Vitals, and implement improvements.
• Follow accessibility standards (WCAG) and ensure inclusive user experiences.
• Contribute to continuous integration and deployment processes.
• Implement error tracking, monitoring, and analytics.
• Ensure cross-browser compatibility and responsive design.
• Optimize for performance: code splitting, lazy loading, image optimization.