Senior Front End Engineer

Join our team as a Senior Front End Engineer, where you'll blend product design thinking with hands-on frontend engineering. You'll create intuitive and fast interfaces for complex network and security data, shape frontend architecture, mentor junior engineers, and drive design/engineering best practices. You'll work closely with product managers, backend engineers, and QA/solutions teams to deliver features that meet the needs of real users under operational pressure.

• Concevoir et mettre en œuvre des composants d'interface utilisateur réactifs et accessibles pour la plateforme en utilisant des frameworks frontend modernes (React, Vue, ou similaire).
• Collaborer avec les ingénieurs backend pour définir et consommer des API, en veillant à ce que les vues riches en données restent performantes à grande échelle.
• Mentorer les ingénieurs frontend/UI de niveau intermédiaire et junior à travers des revues de code, des paires de travail et des critiques de conception.

• We're looking for a Senior Frontend Engineer with 5+/8+ years of experience to design and build the interface for our Quantum Security platform
• Familiarity with REST APIs and working closely with backend teams to shape data contracts for UI needs
• Demonstrated experience owning frontend architecture decisions and mentoring other engineers
• 5+/8+ years of experience as a frontend engineer, UI/UX engineer, or product designer with strong coding ability, ideally on data-dense or technical SaaS products
• Proficiency in modern JavaScript/TypeScript and a component-based framework (React preferred; Vue/Angular acceptable)
• Proficiency with design tools such as Figma, Sketch, or Adobe XD
• Understanding of responsive design, accessibility standards (WCAG), and cross-browser/device compatibility
• Ability to conduct or contribute to usability testing and translate findings into design/engineering improvements
• Experience designing interfaces for complex, data-heavy domains (dashboards, network/graph visualizations, security tools, DevOps tools, or similar)
• Strong UX design skills — information architecture, interaction design, visual hierarchy — with a portfolio demonstrating design-to-code work
• Prior experience in network security, cybersecurity, or IT infrastructure SaaS products
• Familiarity with data visualization libraries (D3.js, Recharts, Cytoscape.js, or similar) for rendering network topology and graph-based data
• Basic understanding of Layer 2/Layer 3 networking concepts (VLANs, routing, ACLs) to better design for technical users
• Experience with design systems and component libraries at scale
• Exposure to CI/CD pipelines and frontend testing frameworks (Jest, Playwright, Cypress)