Mobile UI/Design Engineer
Develops polished, gesture-driven mobile interfaces in React Native for Kraken's crypto app, focusing on fluid interactions, animations, and performance optimization. Requires deep React Native expertise, interaction design sensibility, and a portfolio of shipped work.
About the job
Responsibilities
- Own the craft layer of React Native mobile experience — fluid, gesture-driven interactions and transitions that feel native.
- Push React Native beyond its defaults — Reanimated, Skia, native module bridges.
- Partner closely with product designers, challenging and elevating motion and interaction design.
- Establish animation primitives and interaction patterns within the design system.
- Profile and optimise rendering performance, especially on lower-end Android devices.
- Contribute to architectural decisions affecting UI responsiveness: state management, render cycles, data flow.
- Mentor engineers on interaction quality.
Requirements
- Deep experience building polished mobile interfaces in React Native (Reanimated, gesture handlers, JS/UI thread performance profiling).
- Trained eye for interaction design (easing curves, spring physics, 60fps constraint).
- Portfolio or demo reel of shipped work required.
- Experience with modern AI development tooling (Cursor, Copilot).
- Strong written and verbal communication skills in English.
Nice to Haves
- React Native Skia, custom shader work, canvas-based rendering.
- Native platform knowledge (Swift/Kotlin) for bridging and modules.
- Built interaction patterns adopted by other engineers.
- Background in visual/motion design (Figma, After Effects).
- Experience in high-stakes domains (fintech, health, trading).
Skills
React Native, Reanimated, Gesture Handler, Skia, Swift, Kotlin, Figma, After Effects, Ai Development Tools, Animation Primitives
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