Senior UX/UI Designer – Stablecoin Banking

KAST is redefining stablecoin banking for global citizens, crypto professionals, Web3-native businesses, and high-inflation markets hungry for USD-backed banking. Backed by top-tier global investors and led by the ex-APAC CEO of Circle, our leadership team spans Circle, Airwallex, Revolut, Wise, Grab, Zoom, AWS, and leading OTC desks. We’ve scaled from zero to nearly a million users at ridiculous speed.

By building directly on-chain, we’ll deliver what traditional rails can’t: instant yield, flexible collateralized lending, and richer investment products. With a premium user focus and a culture built on velocity × excellence, we’re moving fast to outpace legacy players and build the next generation of financial services.

Cards are how users experience stablecoins in the real world—paying at 100M+ merchants, withdrawing at ATMs, and accessing new forms of credit. Our ambition is clear: make KAST the #1 stablecoin bank globally.

We’re hiring a Senior UX UI Designer to craft high-conversion mobile experiences across onboarding, cards, payments, savings, and referrals. You’ll work closely with Product, Engineering, and Compliance to ship designs that are simple, fast, and compliant – without compromising on quality.

Your mission: make KAST the most intuitive, premium, and addictive stablecoin banking app.

• Own end-to-end design for core journeys (KYC → card activation → first spend).
• Turn complexity (on-chain actions, compliance steps, FX, fees) into simple UX.
• Build and maintain clean, extensible design systems.
• Prototype rapidly (Figma/Proto tools) and validate with users; iterate using analytics.
• Partner with Product & Engineering to scope MVPs, define acceptance criteria, and ensure design quality in build.

• 6-10 years designing consumer mobile apps; fintech, payments, or challenger bank experience.
• Strong systems thinking: component libraries, tokens, motion, responsive rules.
• Fluency in Figma (auto-layout, variants), prototyping, and developer-ready specs.
• Data-driven mindset: comfortable with funnels, A/B testing, and iteration loops.
• Curiosity (or experience) in Web3/crypto, with a knack for simplifying complexity.
• Founder mindset: you own outcomes, communicate clearly, and ship relentlessly.

• Shape the user journeys at one of the fastest-scaling Web3 challenger banks.
• High ownership, zero bureaucracy, and direct impact on millions of users.
• Competitive comp + meaningful equity.
• Join a high-energy, no-BS team on track to be the next unicorn.

Referrals only. Find your way in.

• Ask someone from the KAST team to vouch for you.
• Show us what you’ve built that proves you’re world-class.
• Or surprise us – the best builders always do.