Senior Staff Mobile Engineer, Client applications

About the role: What's in the Box

The service provider will contribute to the Shopping tribes within the Consumer Alliance, which oversee the core shopping experience across mobile and web applications—ranging from menu discovery and search to cart management and checkout. As a Senior Staff Mobile Engineer, the external expert will focus on shaping the high-level architecture and technical quality of the React Native mobile application that powers this global experience. This engagement involves providing high-level technical direction across multiple squads to ensure the scalability and modularity of the consumer-facing platforms.

What you’ll do: The Recipe

• Define and drive the mobile architecture and engineering standards across the alliance, ensuring solutions are scalable and modular.


• Drive a unified app and web context management strategy to support quality assurance workflows and AI-driven agentic development lifecycle tooling.


• Optimize GraphQL API usage and data fetching patterns within the mobile application.


• Provide significant hands-on contributions to the codebase to implement core architectural patterns.


• Communicate technical direction, trade-offs, and project milestones to primary stakeholders and senior management.


• Collaborate with peers across engineering, product, and design, offering expert perspectives on technical feasibility and system design.

What you’ll bring: The Ingredients

• Genuine enthusiasm for AI-supported and agentic ways of working, with a drive to implement these methodologies at an enterprise scale.


• Deep expertise in React Native, with extensive experience delivering complex, large-scale mobile applications.


• Proven track record in architecting modular mobile systems and leading large-scale technical migrations.


• Versatility to contribute to backend services or web codebases as required by project demands.


• Experience with GraphQL and React for web is highly desirable.

Above all, we are looking for individuals who will make HelloFresh better. We believe there are many different ways of developing skills and we love diverse experiences! So even if you don’t “tick all the boxes” but think you’d thrive in this role, we would really like to learn more about you.

What we offer: The Toppings

• Global collaboration at scale: Collaborate with experienced engineers and product partners across HelloTech’s international teams, in a culture of active knowledge sharing.


• Technology with real-world impact: Build and operate modern systems at global scale, supporting 6+ millions of customers and complex supply chain operations.


• Technical/Product/Design leadership: Drive best practices and influence architecture/design, quality, and ways of working in an autonomous, product-led setup.


• End-to-end development/delivery: Drive decisions from problem definition to production, improving systems and enabling long-term scalability.


• Access to workspace at Warsaw Centre Point: The hub offers modern facilities including showers, breakout zones, outdoor space, cycle parking, and refreshments (coffee, soft drinks, and fruit).

Are you the missing ingredient? If this sounds like a tasty opportunity, we’d be excited to hear from you. We aim to review your profile and respond within 5 business days.