Lead Frontend Engineer

Photon; Belgique; Sur place; EUR 90 000 - 130 000; Plein temps

Résumé du poste

Photon seeks a senior frontend leader to own end-to-end delivery of a large-scale UI platform (web and mobile). You will drive micro-frontend architecture, design systems, and shared standards to enable multiple teams to ship cohesively while maintaining performance and accessibility.

You will manage offshore developers, enforce delivery commitments, and hands-on unblock critical work. Expect collaboration with product and security teams and a strong emphasis on WCAG, OAuth/OIDC, and robust test

Qualifications

• 8+ years in front-end engineering, with 3+ years as a tech lead owning end-to-end delivery of large-scale web apps.
• Expert, architecture-level React (web and mobile) and Node.js/TypeScript.
• Proven design experience with Webpack, Module Federation, and micro-frontend architecture in production.
• Strong grounding in state management patterns (Redux, Context, signals, or equivalent).
• Experience architecting a UI design system and working with design tooling (Figma).
• Deep knowledge of ARIA/accessibility standards (WCAG) and how to enforce them.
• Strong CSS architecture for design-system-driven styling at scale.
• Proven ability to define and enforce UI performance measurement and optimization.
• Knowledge of OAuth/OIDC and OWASP practices for front-end apps.
• Financial-services or regulated-industry experience preferred.

Responsabilités

• Own delivery of the micro-frontend strategy across teams, including module boundaries and setup.
• Define the UI design system — libraries, tokens, and design-to-code handoffs from Figma.
• Set standards for state management across React apps and CSS architecture at scale.
• Own accessibility compliance delivery across portal surfaces.
• Define UI performance budgets and monitor performance and errors in production.
• Direct authentication delivery using OAuth/OIDC and enforce OWASP web security standards.
• Set A/B testing approach and deployment patterns for UI services.
• Define test automation strategy (Playwright) and quality gates for UI releases.
• Run offshore senior developer delivery including sprint commitments and code reviews.
• Report delivery status, risks, and blockers to engineering leadership.

Connaissances

Frontend architecture

React (web/mobile)

Node.js/TypeScript

Design systems

Accessibility (ARIA/WCAG)

Delivery leadership

Offshore team management

Performance optimization

State management patterns

Security: OWASP / OAuth/OIDC

Outils

Webpack

Module Federation

Playwright

Sentry / Datadog

Figma hand-off

Description du poste

Summary: Owns end-to-end delivery of the organization's web/mobile UI platform: micro-frontend architecture, design systems, and the shared standards that let many teams ship UI independently without breaking cohesion, performance, or accessibility. Sets the technical direction but is accountable for shipped outcomes — runs the offshore development team day-to-day, reviews their work, and stays hands-on to unblock delivery.

Description for Internal Candidates

Key Responsibilities

• Own delivery of the micro-frontend strategy, including module boundaries, shared shell, and Webpack & Module Federation setup across teams.
• Define the UI design system — component libraries, design tokens, and how they're sourced from Figma and propagated to code.
• Set standards for state management across React applications (web and mobile) and for CSS architecture at scale.
• Own accessibility (ARIA) compliance delivery across all portal surfaces.
• Define UI performance budgets and drive performance/error monitoring rollout in production.
• Direct authentication/authorization delivery for UI surfaces using OAuth/OIDC, and enforce OWASP web security standards.
• Set the A/B testing approach and the containerization & deployment pattern for UI services.
• Define the test automation strategy (Playwright) and quality gates for UI releases.
• Run day-to-day delivery of the offshore senior developer team: sprint commitments, code review, real-time unblocking, and hands-on work on critical or time-sensitive pieces.
• Report delivery status, risks, and blockers to engineering leadership.

Must-Have Qualifications

• 8+ years in front-end engineering, with 3+ years as a tech lead owning end-to-end delivery of large-scale web applications (not a pure design/review architect role).
• Expert, architecture-level command of React (web and mobile) and Node.js/TypeScript.
• Proven design experience with Webpack, Module Federation, and micro-frontend architecture in production at scale.
• Strong grounding in state management patterns (Redux, Context, signals, or equivalent) and when to use each.
• Experience architecting a UI design system (component libraries, design tokens) and working with design tooling (Figma) hand-off workflows.
• Deep knowledge of ARIA/accessibility standards (WCAG) and how to enforce them at the platform level.
• Strong CSS architecture experience (design-system-driven styling at scale, not just component-level CSS).
• Proven ability to define and enforce UI performance measurement and optimization strategy.
• Solid understanding of OAuth/OIDC and OWASP web security practices for front-end applications.
• Financial-services or regulated-industry experience preferred given security/compliance stakes.
• Strong stakeholder communication; able to directly manage day-to-day delivery of an offshore team (standups, unblocking, sprint accountability).
• Proven track record of shipping large-scale UI platforms on committed timelines, including hands-on troubleshooting under delivery pressure.

Nice-to-Have Qualifications

• Familiarity with Playwright or comparable UI test automation frameworks at an architectural level.
• Experience with error-monitoring platforms (Sentry, Datadog RUM, or similar) at a design level.
• Exposure to mobile-specific micro-frontend or module-federation patterns.
• Relevant certifications or contributions to open-source design systems.