Senior React Native Engineer, Consumer

Description

You will join the Warsaw office of the company's technology organisation, HelloTech, which has more than 1000 people and builds the digital products behind its end-to-end food service. Its offerings range from meal kits and ready-to-eat meals to pet food and premium meat and seafood, reaching millions of customers every month.

The business runs on subscriptions sold direct to consumers, and technology touches every step: customer apps, personalisation, pricing, forecasting, supply chain, and food waste reduction. Each brand serves its own customers independently, while shared platforms, data, and operations are built by HelloTech.

HelloTech is organised into autonomous, cross-functional alliances, and each one owns a product or domain from start to finish. You will help build scalable, data-driven products used across markets, using a modern stack alongside international teams.

The squad owns pricing and plans on web, iOS, and Android, including weekly menu pricing, plan building, bundles, and the cancellation flow. It sits in the Consumer Mega Alliance and builds logic that works across several brands, multiple currencies, and different pricing models. When pricing logic or an experiment fails in any market, the squad finds and fixes it.

The React Native codebase is shared across the engineering organisation. Your squad owns the pricing and plan parts of it, plus the backend services behind them.

This is a senior, mobile-first role where most of your time goes into the shared React Native codebase, shipping to iOS and Android. The team is AI-first and wants a senior engineer who can own problems end to end, improve the mobile architecture, and raise the bar for testing and observability.

The team values flexibility and cross-functional work. Although the role is aligned to this Alliance, strong candidates may be considered for work on other teams or projects.

Responsibilities

• Own features from technical design and build through a phased rollout behind feature flags, then measure results after launch.
• Build and improve high-performance React Native screens across brands, focusing on modularity, offline resilience, and correct prices in every market.
• Work mainly in React Native and TypeScript, and move into the GraphQL APIs and backend pricing data when the work needs it.
• Keep test coverage high across unit, integration, and Maestro end-to-end tests, and set up metrics, traces, and alerts for critical revenue paths.
• Run and analyse A/B experiments, guide mid-level engineers through detailed reviews, and share mobile patterns with other chapters.
• Use AI tools across the whole lifecycle, from scoping and design to coding and test generation, and judge generated code critically.

Requirements

• Senior software engineering experience, including 2 to 3+ years of production React Native with TypeScript and modern React.
• Experience managing complex state, modular architecture, and GraphQL or REST integrations in large shared codebases.
• Hands-on experience with unit, integration, and E2E testing tools such as Jest, React Native Testing Library, and Maestro, plus solid CI/CD release habits.
• A proven record of using AI tools to speed up delivery, with a clear approach to validating output, fixing errors, and weighing trade-offs.
• Strong partnership with product, design, and analytics, and the ability to make technical decisions on your own.
• Bonus: experience with subscription or pricing systems, mobile performance profiling, experimentation platforms, or observability tools such as Honeycomb or OpenTelemetry.
• The company wants people who will make it better, and values varied career paths. If you do not meet every point above but think you would thrive in this role, get in touch anyway.

Conditions

Based in the Warsaw office, with the role aligned to the Consumer Mega Alliance.

Candidates may be considered for other teams or projects.

Applications are reviewed and answered within 5 business days.

Equal opportunity applies to all candidates.

Benefits

• Work alongside experienced engineers and product partners across HelloTech's international teams, in a setting where knowledge is shared actively.
• Build and run modern systems at global scale, serving more than 6 million customers and complex supply chain operations.
• Shape architecture, design, quality, and ways of working in an autonomous, product-led setup.
• Own decisions from problem definition through to production, improving systems for long-term scalability.
• Access to a workspace at Centre Point in Warsaw, with showers, breakout areas, outdoor space, bike parking, and refreshments including coffee, soft drinks, and fruit.