Mobile UI/Design Engineer, Kraken

• Deep, demonstrable experience building polished mobile interfaces in React Native — you know Reanimated well, you've fought with gesture handlers, and you've profiled JS thread vs UI thread performance and won
• A trained eye for interaction design — you notice when an easing curve is wrong, you have opinions about spring physics, and you understand that 60fps isn't a target, it's a constraint
• A portfolio or demo reel of shipped work is a hard requirement — a personal site, video walkthrough, GitHub interaction demos, or screen captures of work you're proud of. If we can't see your craft, we can't evaluate it
• Experience with modern AI development tooling (Cursor, Copilot, or similar) as a natural part of how you build — not as a novelty, but as a multiplier
• Strong written and verbal communication skills in English

Desirable

• The Consumer Mobile team builds the Kraken app — the interface millions of people use to interact with their money
• We work in React Native and care deeply about how the product feels, not just whether it functions
• A trade confirmation should feel instantaneous
• A portfolio should feel alive
• Navigation should feel effortless
• These details directly impact trust, and trust is everything in crypto
• Most mobile engineers can build screens. This role is for someone who makes interfaces feel right — the weight of a gesture, the timing of a transition, the moment a loading state becomes invisible. You obsess over these details not because a designer asked for them, but because you can't ship something that feels wrong
• Own the craft layer of our React Native mobile experience — fluid, gesture-driven interactions and transitions that feel native, not web-in-a-wrapper
• Push React Native beyond its defaults — Reanimated, Skia, native module bridges when the abstraction isn't enough
• Partner closely with product designers, challenging and elevating motion and interaction design from concept through implementation
• Establish animation primitives and interaction patterns within our design system that other engineers build on — your work becomes the quality floor for the team
• Profile and optimise rendering performance, especially on lower-end Android devices where frame drops are unforgivable
• Contribute to architectural decisions that affect UI responsiveness: state management, render cycles, and data flow into the view layer
• Mentor engineers on interaction quality and raise the standard for what "done" looks like across the mobile org

• Unless a specific application deadline is stated in the job posting, applications are accepted on an ongoing basis