Senior React Native Engineer, ConsumerNew

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

  • End-to-End Ownership: Lead feature delivery from technical design and implementation to phased rollout behind feature flags and post-launch measurement.

  • Mobile Architecture: Build and refine high-performance React Native surfaces across brands, focusing on modularity, offline resilience, and cross-market price correctness.

  • Full-Stack Fluency: Primarily work with React Native and TypeScript, while comfortably navigating our GraphQL APIs and backend pricing data when needed.

  • Quality & Observability: Maintain high test coverage (unit, integration, and Maestro E2E) and establish proactive observability (metrics, traces, alerts) for critical revenue paths.

  • Mentorship & Experimentation: Run and analyze A/B experiments, unblock mid-level engineers through thoughtful reviews, and share mobile patterns across chapters.

  • AI-First Delivery: Leverage AI tools across the entire engineering lifecycle—from scoping and design to coding and test generation—while exercising strong critical judgment on generated code.

What they're looking for

  • Core Experience: Senior-level software engineering experience, including 2–3+ years of production React Native alongside TypeScript and modern React.
  • Architecture & Systems: Proven ability to manage complex state, modular architectures, and API integrations (GraphQL/REST) in large-scale shared codebases.
  • Testing & Release Rigor: Hands-on experience with unit, integration, and E2E testing (e.g., Jest, React Native Testing Library, Maestro), paired with solid CI/CD release hygiene.
  • AI-Assisted Workflow: Proven track record of using AI tools to accelerate delivery, with clear insight into validation, error correction, and trade-offs.