Odisei Music
- Role
- React Native developer - Performance specialist
- Period
- May 2026 → present
- Sector
- Music / E-commerce
- Location
- Bordeaux
The brief
Brought in as a React Native expert to optimise the mobile app's performance, with Android as the priority.
Context
Odisei Music, between music and e-commerce, ships a React Native mobile app to its users. On Android in particular, some screens lost 40 to 50% of their frame rate, switching between two tabs froze the interface, and lists slowed down screen loading. The brief: come in as a performance specialist, with measurements, Android first.
Approach
Every symptom was measured and reproduced first: profiling of re-renders, the JS thread and memory on real devices. The affected screens were split into atomic components, the lists rebuilt with Legend List, and the freeze on tab switch removed. Measured result: steady 120 fps, CPU down 40%, memory down 20%.
Stack
What I delivered
- Screen-level optimisation: removed a 40 to 50 % frame rate drop, reaching a steady 120 fps with no stutter.
- Tab navigation: fully eliminated the switch freeze that cost up to 30 % of the frame rate.
- Rebuilt the lists on Legend List: fast scrolling stays smooth and screen load times dropped sharply.
- CPU usage down 40 % and memory footprint down 20 %, alongside an atomic redesign of the component tree.
Notes from this mission
Related expertise
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