Jobs

KAST is seeking a mid-level to senior Frontend Developer with strong Flutter and DeFi expertise to build consumer-facing mobile applications. This role involves translating complex on-chain DeFi flows into clear, trustworthy, and delightful user interfaces, collaborating closely with product, design, and backend teams. The ideal candidate will have 2+ years of production Flutter experience and hands-on knowledge of DeFi protocols like lending, staking, and swaps, along with a solid understanding of mobile security and API integration. This is a fully remote position based in Brazil, offering the chance to contribute to a rapidly growing company redefining stablecoin banking.