Senior Full Stack Engineer - Campaign Engine (all genders) Berlin, Germany

The Campaign Engine is a completely new product: its mission is to enable self-service campaign management for Retail Media Partners, giving them direct access to AY's unique loyalty frameworks: Missions & Coupons. This creates a compelling opportunity for partners to drive customer acquisition and incremental engagement within AY's existing customer base. Operating within an existing ecosystem, our evolution into s pecialized product teams provides an autonomous, greenfield-like environment.

• Ship full-stack features end-to-end across PHP/Laravel APIs and React UI components
• Lead technical feature design and build background jobs, REST endpoints, and MySQL migrations
• Work on high-precision domain logic covering CPC bidding, ad budgets, and campaign eligibility
• Keep the frontend and backend synchronized through strictly typed API contracts (OpenAPI/TypeSpec)
• Own production stability end-to-end, from writing automated tests to AWS ECS deployments and Datadog/Sentry alerting
• Balance strict engineering rigor on billing/budget flows with fast iteration on exploratory UI features
• Review full-stack code, optimize queries, and leverage modern AI tools (Cursor, Claude Code) in daily work
• Partner with Product to break down features, estimate effort, and ship in short, agile iterations