Jobs / Poland / HelloFresh Benelux B.V.
Senior Mobile Engineer - React Native, Platform/Infrastructure (all genders)
HelloFresh Benelux B.V. · 🌍 Warszawa, Masovian Voivodeship, Poland
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About the role
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 and premium meat & seafood, HelloTech creates the platforms that bring tailored food solutions to millions of customers every month. Our subscription-based, direct-to-consumer model relies on technology at every step, from customer-facing apps and personalization logic to pricing, forecasting, supply chain optimization, and initiatives that help reduce food waste. While our brands operate independently to serve distinct customer needs, they are united by shared platforms, data, and operational excellence built by HelloTech. About the role: What's in the Box As a Senior Mobile Engineer in the Consumer Foundations tribe, you'll join the Client Platform squad and work hands-on to help evolve our mobile platform. Alongside engineering and product teammates, you'll help move our white-labeled, multi-brand application from a native brownfield React Native setup toward a more scalable greenfield architecture. This is a chance to build strong technical foundations, contribute to shared tooling, and help a growing engineering organization ship reliable mobile software. Our stack: Core: React Native, iOS (Swift), Android (Kotlin) Architecture: Monorepos, White-labeling, shared npm packages CI/CD & Automation: Bitrise, Expo (Future) Observability & Testing: Honeycomb, Maestro E2E What you’ll do: The Recipe At HelloFresh we are moving away from a model where software developers just execute tickets toward one where product engineers are trusted to own customer problems. A Product Engineer takes a problem, forms a point of view, validates it with customers and data, and ships it using AI as a force multiplier. • Contribute to Migration Work: Help execute the brownfield-to-greenfield React Native migration within our white-labeled, multi-brand application ecosystem. • Support Monorepo Scaling: Work within our React Native monorepo to support concurrent development across multiple squads, and help maintain shared npm packages used across mobile and web. • Strengthen CI/CD: Help maintain and improve our CI/CD pipelines in Bitrise, and contribute to the team's ongoing evaluation of a future Expo migration. • Build Test Automation: Design and extend end-to-end test coverage using Maestro, helping raise the bar for release quality and confidence across the app. • Improve Observability: Build and maintain tracing and dashboards in Honeycomb to help the team make data-informed decisions about app health. • Collaborate Across Squads: Partner with your Engineering Manager and teammates to review technical solutions and bring good engineering practices into your day-to-day work. • Support Application Health: Help investigate and resolve production issues, contributing to a culture of stability and reliability. • Document Decisions: Write clear technical documentation — design proposals, ADRs, or lightweight write-ups — appropriate to the scope of the work. What you’ll bring: The Ingredients • 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. • React Native & Native Mobile Expertise: Deep, production-tested expertise in React Native, combined with strong knowledge of both iOS and Android. You understand React Native's internal mechanics, performance profiling, native code bridging, platform-specific features and constraints, as well as th