Senior Mobile Engineer — AI-Driven Tracking & Experiments

HelloFresh; Województwo mazowieckie; On-site; PLN 180,000 - 280,000; Full time

Benefits offered by this job

Global collaboration at scale

Real-world impact technology

Workspace in Warsaw Centre Point

Job summary

HelloFresh's HelloTech in Warsaw is seeking a Senior Mobile Engineer to own and evolve the mobile app tracking architecture across Android (Kotlin) and React Native, with contributions to iOS and Web as needed. You'll work with Claude, Zed, and Opencode to apply AI across design, development, and testing, joining a team that values reliability and experimentation.

You will mentor engineers, raise engineering standards, and own metrics like retention and crash-free sessions.

Qualifications

• Extensive mobile engineering experience (5+ years) with strong native depth, ideally on Android (Kotlin).
• Cross‑platform mindset and ability to work across mobile and web codebases.
• GenAI proficiency and experience leveraging AI in development workflows.
• Commitment to high‑quality code, automated testing, and production readiness.

Responsibilities

• Own the integration and evolution of tracking and experimentation SDKs across Android native and React Native layers.
• Solve native mobile telemetry challenges (lifecycle events, background sync, offline buffering).
• Embed AI-driven workflows to increase automation and data quality.
• Mentor engineers and contribute to team engineering standards.
• Own mobile metrics like retention and crash-free sessions and ship with a bias to speed and quality.

Skills

Mobile engineering

Android Kotlin

Cross-platform

AI tooling

Tools

Snowplow

Statsig

React Native

Job description

HelloFresh's HelloTech in Warsaw is seeking a Senior Mobile Engineer to own and evolve the mobile app tracking architecture across Android (Kotlin) and React Native, with contributions to iOS and Web as needed. You'll work with Claude, Zed, and Opencode to apply AI across design, development, and testing, joining a team that values reliability and experimentation.

You will mentor engineers, raise engineering standards, and own metrics like retention and crash-free sessions.