Senior Frontend Product Engineer, Conversions (all genders)

HelloFresh is a global technology company based in Warsaw with its HelloTech organisation comprising over 1000 people. It builds digital products that power end-to-end food experiences including meal kits, ready-to-eat meals, pet food, and premium meat & seafood, serving millions of customers monthly through subscription-based direct-to-consumer platforms.

• Hands-on experience with AI tooling such as Claude Code, Cursor, and Copilot beyond casual experimentation.
• Deep technical proficiency in React, TypeScript, and modern SSR rendering patterns.
• Proven experience architecting solutions using edge runtimes like Vercel Edge Functions or Cloudflare Workers.
• Demonstrated GenAI expertise with hands-on use of modern AI tools to enhance code quality and development speed.
• Practical experience with A/B testing and feature-flagging frameworks such as Statsig and Optimizely.
• Familiarity with frontend monitoring and observability platforms.
• Strong collaborative mindset and ability to communicate complex technical decisions clearly.
• Ownership mentality with a bias to ship and finish tasks.
• Product sense with ability to support decisions with data and user evidence.
• Strong frontend engineering expertise with the ability to prototype and iterate on customer experiences independently.

• Drive the architecture and delivery of personalized conversion pages and funnels using React, TypeScript, and Next.js, including SSR middleware and edge-layer caching.
• Champion GenAI proficiency by embedding AI-driven workflows into development, debugging, and code-quality processes.
• Ensure top-tier funnel performance and application stability, optimizing Core Web Vitals and low-latency personalization at a global scale.
• Architect and maintain MarTech integration layer, behavioral lead-capture tools, and GTM event pipelines feeding analytics and CRM systems.
• Implement robust automated testing strategies with Jest and Cypress, alongside frontend observability tools like OpenTelemetry, Honeycomb, Grafana, or Sentry.
• Partner with cross-functional product, machine learning, and design experts to shape personalized user experiences and resolve technical trade-offs.
• Work beyond your specialization when needed, operate and improve your systems in production.
• Contribute to customer-facing web surfaces to drive measurable improvements in conversion, activation, or retention.