Senior Engineering Manager - Credit Cards

Mercury is seeking a Senior Engineering Manager to lead the Custody team through its next stages of growth and scale. The team builds the systems underneath Mercury's investment experience: the ledger, security master service, reconciliation, and operational tools that keep customer assets accurately accounted for and give products a dependable foundation to grow. The manager leads, hires, develops senior engineers, owns the team's technical strategy, and guides the design and evolution of core custody systems including cash and securities ledgers, security master service, position tracking, and reconciliation. SF CA, New York NY, Portland OR, or Remote US. Salary: $239,000–$298,800 USD. Posted 2026-09-18.

• 3+ years of experience managing highly technical teams. • Direct experience building or operating RIA and broker-dealer custody systems at scale, including ledgers, security master service, cash and securities reconciliation, and money movement. • Understanding of the broker-dealer operating model and how responsibilities and data flow across introducing brokers, clearing firms, and custodians. • Experience working closely with compliance and operations teams, translating requirements into practical engineering decisions and effective controls. • Understanding of the lifecycle of securities and the implications of settlement and corporate actions for customer cash and positions across equities, fixed income, ETFs, and mutual funds.