Built by operators, not speculators.
Decades of combined experience in financial technology, institutional operations, and infrastructure engineering.
Jeff Mendonca
Senior technologist and systems architect with 39+ years building mission-critical platforms across national security, advanced computing, and global enterprise infrastructure. Patent inventor (53 claims pending). Architect of the protected self-custody model. Dual British-American nationality. Led humanitarian initiatives across Mexico, U.S., Brazil, Europe, and the Middle East.
LinkedIn ↗
Joshua McCarley
Senior program and operations executive with 21+ years leading large-scale, high-risk, and highly regulated initiatives across defense, aviation, and advanced manufacturing. Retired U.S. Army Senior Enlisted leader from Special Operations Aviation. PMP-certified. Delivered enterprise transformations across portfolios valued at over $500M.
Stanley Byrne
Principal Cloud, Data & AI Architect with 40+ years building AI-driven, cloud-native data platforms across healthcare, insurance, banking, and entertainment. Expert in enterprise data strategy, LLM integration, predictive analytics, and large-scale data engineering with deep hands-on expertise in Python, Databricks, AWS, PostgreSQL, and real-time data pipeline architecture.
LinkedIn ↗Institutional guidance from experienced leaders.
Advisory board members will be announced as engagements are formalized. We are actively in discussions with leaders in institutional finance, regulatory affairs, and enterprise technology infrastructure.
Interested advisors with institutional finance, regulatory, or technology leadership backgrounds are welcome to connect.
Advisory InquiriesWork with us.
JIL Sovereign is building the neutral settlement coordination layer for institutional finance. We welcome conversations with potential partners, investors, and institutional participants.