Architect and lead development of a scalable, compliant backend system for binary trading markets. Design and implement Order Management System (OMS), clearing house connectivity, compliance subsystems, and back-office reporting. Collaborate with Product, Compliance, Frontend, and Legal teams. Build and mentor backend teams, produce documentation, and evaluate third-party systems. Design AWS-native architecture leveraging specific services. Establish secure CI/CD pipelines with observability. Ensure compliance with CFTC, NFA, and financial protocols.