Senior UX/UI Designer - Stablecoin Banking

Remote, New York, Singapore, Dubai, Bangkok, Australia

About KAST

KAST is redefining what it means to bank with stablecoins - think Revolut, rebuilt from scratch on Web3. Backed by top-tier VCs, we’ve grown from 0 to 1 million users in under a year. We’re building the next-gen global bank based entirely on stablecoins.

Design is at the heart of everything we do - it’s how we simplify the complex, make money feel easy, and turn crypto skeptics into brand ambassadors.

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.

The Role

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.

What You’ll Be Doing

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.

What You'll Bring

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.

Why KAST?

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.

How To Apply?

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.