We are seeking a world-class Senior Fullstack Engineer who thrives on solving high-impact, complex problems. You will own critical system architecture, shape the future of real-time financial transactions, and build at a massive scale. Your work will directly enable millions of hourly workers to access financial freedom. You will own and architect mission-critical financial applications, ensuring real-time, high-availability performance at scale. You will also design highly scalable APIs that support millions of transactions. Lead high-performance engineering projects from conception to deployment, ensuring code quality, maintainability, and security.