Principal Product Manager - Fiat Payments Platform - Stablecoin Banking

In-Person (Singapore)

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 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.

The Role

Your mission: build a best-in-class fiat payments platform that integrates PSPs, bank rails, and real-time networks, while orchestrating them intelligently for resilience, compliance, and user experience.

What You’ll Be Doing

Define and own the product roadmap for KAST’s fiat payments platform.
Partner with engineering to design event-driven, reliable, ledger-safe services for deposits, withdrawals, and payouts.
Integrate and optimize PSPs, banks, and real-time payment networks (e.g., PIX, UPI, Faster Payments).
Balance cost, approval rates, and resilience with smart routing and failover strategies.
Work with Compliance and Ops to embed KYC/AML and regulatory controls directly into the payment flows.
Set and track KPIs: success = rapid, seamless onboarding, near-zero payment failures, and instant reconciliation.

What You'll Bring

10-12+ years in product management, with at least 5+ in payments, PSPs, or banking rails.
Proven track record building core payment infrastructure or orchestration platforms.
Deep knowledge of PSPs, real-time rails, settlement, reconciliation, and risk/fraud controls.
Experience working closely with engineers on API-first, event-driven, cloud-native systems.
Entrepreneurial mindset: ruthless prioritization, bias to ship, and ability to balance speed with compliance.

Why KAST?

Build the payments brain behind a global, stablecoin-first challenger bank.
High ownership, zero bureaucracy, and direct impact.
Work with a world-class team.
Competitive comp + meaningful equity.
Join a no-BS, high-energy 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.

Interview Process