Establish Security and Privacy Framework: Design and implement an ironclad security posture appropriate for a regulated financial platform handling sensitive financial and data — spanning PII protection, identity and access management, zero-trust architecture, encryption strategy, secure development lifecycle, vendor security reviews, responsible AI governance controls (ensuring algorithmic fairness and explainability), data retention policies, and security monitoring and threat detection. Recruit and Build the Engineering Organization: Build the initial technical team — defining organizational structure and hiring priorities — with likely early hires spanning a Founding/Principal Engineer, Platform Engineer, Full Stack Engineers, Mobile Engineers, Security Engineer, QA/Automation Engineer, Data/AI Engineers, and Site Reliability Engineers.