Own end-to-end technical onboarding and certification for electronic trading clients, from connectivity testing through production launch. Coordinate Development, Infrastructure, Compliance, Legal, Clearing, Business Development, and clients; validate FIX connectivity and routing; configure accounts and trading setups; monitor post-launch message quality and behavior; manage readiness, blockers, recertification, regulatory reporting, and post-trade requirements. Serve as the primary responder for onboarding issues and ensure repeatable, operationally disciplined processes.