Frontend Engineer - Advertiser & Agency Console

About the role

A lean, senior internal team is building a highly resilient advertising platform and needs a senior frontend engineer to own the entire product surface: the advertiser and agency console where campaigns, audiences, creatives and reports come to life. The role is end-to-end, with real ownership of a large, still unfinished surface.

Key responsibilities

• Build and own the product UI: campaign and line-item management, inventory, creative assets, reporting dashboards, account and admin modules, and the conversational agent interface
• Keep the typed, contract-first client tight so the backend promises match what the UI assumes
• Own the design system implementation: consistent, accessible components that are internationalised (FR / EN / AR)
• Work in an AI-first delivery model: specify work as clear, self-sufficient issues, direct agentic tooling and gatekeep every change, documenting components and decisions

Required profile

• Senior frontend engineer with 4+ years shipping production React applications, owning a non-trivial product surface
• Deep TypeScript and modern React, with experience of server-state tooling and typed API consumption
• Testing habit (end-to-end and unit), attention to accessibility and internationalisation
• Comfortable editing and validating AI-generated code, turning product goals into executable specs
• Exceptional written communication and effectiveness in a distributed, async environment (Paris timezone +/- 3h)

Required skills

• Modern React and TypeScript
• Component-library-based UI and a shared design system
• Data visualisation and server-state tooling
• i18n (FR / EN / AR)
• Google Cloud Platform