Senior Mobile Product Engineer – AI-Driven Tracking

HelloFresh; Województwo mazowieckie; On-site; PLN 240,000 - 360,000; Full time

Benefits offered by this job

Global collaboration at scale

Tech with real-world impact

Leadership in engineering/tech/product

End-to-end development/delivery

Workspace access at Warsaw CentrePoint

Job summary

HelloFresh in Warsaw, as part of HelloTech, seeks a Senior Mobile Engineer to own and evolve the mobile app tracking architecture powering behavioral tracking and experimentation across brand portfolio. Core platforms are Android (Kotlin) and React Native, with contributions to iOS and Web as needed.

You’ll work with AI tools like Claude and Copilot to accelerate development. You will collaborate with product managers, software and data engineers, mentor teammates, and help ship high‑quality,

Qualifications

• Hands-on experience with AI tooling beyond casual experimentation and daily use of AI agents.
• Extensive mobile engineering experience (5+ years) with strong native depth, ideally Android (Kotlin).
• Cross‑platform mindset and ability to work across mobile and web codebases.
• GenAI proficiency and ability to leverage AI to boost speed, quality and team output.
• Strong focus on engineering excellence, code quality, stability and resilient infrastructure.
• Experience building and maintaining automated tests at unit, integration and end‑to‑end levels.
• Track record of ownership in ambiguous, cross‑functional environments and shipping impactful solutions.
• Deep mobile engineering expertise across the app release cycle, test automation, and on‑device performance.

Responsibilities

• Own integration and evolution of tracking/experimentation SDKs across Android and React Native.
• Solve native mobile telemetry challenges (lifecycle, background sync, offline buffering).
• Embed AI-driven workflows to increase automation and data quality.
• Drive engineering excellence with robust automated testing and high‑quality releases.
• Collaborate with product, software and data engineers to evolve the platform.
• Mentor engineers and contribute to team-wide engineering standards.
• Own metrics for mobile quality (retention, crash‑free sessions, conversion).
• Operate what you build and monitor production systems; shipping is the start of learning cycle.

Skills

AI tooling

Mobile engineering

Android (Kotlin)

Cross‑platform

GenAI proficiency

Engineering excellence

Automated tests

Ownership / bias to ship

Product sense

Tools

Snowplow

Statsig

React Native

Kotlin

iOS (Swift)

Web frontend (React/TS)

Job description

HelloFresh in Warsaw, as part of HelloTech, seeks a Senior Mobile Engineer to own and evolve the mobile app tracking architecture powering behavioral tracking and experimentation across brand portfolio. Core platforms are Android (Kotlin) and React Native, with contributions to iOS and Web as needed.

You’ll work with AI tools like Claude and Copilot to accelerate development. You will collaborate with product managers, software and data engineers, mentor teammates, and help ship high‑quality,