Senior Mobile Product Engineer: AI-Driven Tracking & Experiments

HelloFresh; Warszawa; On-site; PLN 180,000 - 260,000; Full time

Benefits offered by this job

Global collaboration at scale

Modern tech stack across HelloFresh

Workspace at Warsaw Centre Point

Job summary

HelloFresh in Warsaw, within HelloTech, is looking for a Senior Mobile Engineer to own and evolve the mobile app tracking architecture. Your core platforms are Android (Kotlin) and React Native, with contributions to iOS and Web as needed, while AI is part of daily work.

You’ll use Claude, Zed, and Opencode to accelerate development, mentor engineers, and partner with product, software, and data teams to ship reliable, measurable mobile experiences across brands.

Qualifications

• 5+ years of mobile engineering experience
• Strong native depth on Android (Kotlin)
• Cross-platform mindset across mobile and web
• Proven ability to leverage AI tools to accelerate development
• Experience building automated tests at multiple levels
• Ownership mindset and ability to ship end-to-end solutions

Responsibilities

• Own integration and evolution of tracking/experimentation SDKs across Android native and React Native
• Resolve native mobile telemetry challenges (lifecycle, background, offline)
• Embed AI-driven workflows to increase automation and data quality
• Improve automated testing, error handling, and release practices
• Collaborate with product, software, and data teams to evolve platform
• Mentor engineers and contribute to engineering standards
• Own app metrics for mobile customers (retention, crashes, conversion)
• Operate what you build with production monitoring and continuous improvement
• Be flexible across domains when needed

Skills

Android (Kotlin)

React Native

iOS Swift

AI tooling

GenAI proficiency

Test automation

Cross-functional collaboration

Release engineering

Performance optimization

Mentorship

Tools

Snowplow

Statsig

GTM

Job description

HelloFresh in Warsaw, within HelloTech, is looking for a Senior Mobile Engineer to own and evolve the mobile app tracking architecture. Your core platforms are Android (Kotlin) and React Native, with contributions to iOS and Web as needed, while AI is part of daily work.

You’ll use Claude, Zed, and Opencode to accelerate development, mentor engineers, and partner with product, software, and data teams to ship reliable, measurable mobile experiences across brands.