Senior Frontend Product Engineer, Conversions (all genders)Active

HelloFresh
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The opportunity

Work with HelloFresh in Warsaw and its HelloTech organisation, HelloFresh’s global technology backbone with more than 1000 people, building the digital products that power our end-to-end food experience. From meal kits and ready-to-eat meals to specialty offerings like pet food…

What you'll do

  • Drive the architecture and delivery of personalized conversion pages and: funnels using React, TypeScript, and Next.js, spanning SSR middleware design through to edge-layer caching strategies.

  • Champion GenAI proficiency, embedding AI-driven workflows into development,: debugging, and code-quality processes to accelerate execution velocity and output.

  • Ensure top-tier funnel performance and application stability, optimizing Core: Web Vitals, low-latency personalization, and multi-brand reliability at global scale.

  • Architect and maintain the MarTech integration layer, behavioral lead-capture: tools, and GTM event pipelines feeding downstream analytics and CRM systems.

  • Implement robust automated testing strategies with Jest and Cypress,: alongside frontend observability tools (OpenTelemetry, Honeycomb, Grafana, or Sentry) to embed deep traceability from initial design to release.

  • Partner with cross-functional product, machine learning, and design experts: to shape personalized user experiences and resolve complex technical trade-offs.

What they're looking for

  • Work beyond your specialization when the problem demands it. Your: specialization is your anchor, not your boundary.
  • Operate what you build . You instrument, monitor, and improve your systems in: production. Shipping is the beginning of the learning cycle, not the end.
  • Contribute to customer-facing web surfaces, driving measurable improvements: in conversion, activation, or retention.
  • Hands-on experience working with AI tooling (e.g., Claude Code, Cursor,: Copilot) beyond casual experimentation. You use AI agents every day. You have a practical sense of how the context you provide to AI tools shapes output quality, and how to set boundaries on AI-generated work.