Chief of Staff to Principal, Single Family Office

The Principal had built the family office over two decades. A Family Office Director ran operations, a CIO ran the investment mandate and a long-serving EA held the Principal's diary. The gap was judgement. Matters that did not sit cleanly with any of those three were reaching the Principal directly, fragmenting attention and blurring accountability.

The brief was for a Chief of Staff who could absorb that middle layer: filtering incoming asks, triaging across operating, investment and personal domains, and holding decisions on the Principal's behalf where the remit was clear. Reporting was to the Principal, with working relationships across every function.

Chief of Staff to Principal is one of the most abused titles in private offices. The market is crowded with candidates who have held the title in a corporate setting, or who have worked as a senior EA with expanded scope. Neither profile matched this brief.

Three specific constraints applied. The role required genuine judgement under confidentiality, holding knowledge across investment, tax, family and personal matters simultaneously, and deciding what reached the Principal and what did not. The candidate needed to land without threatening the existing Family Office Director, CIO or EA, all of whom had long tenure. And the Principal had tested two prior candidates through informal networks, both of whom had failed within the first year. The bar on temperament was higher than the bar on CV.

Candidates who combined genuine Chief of Staff scope inside a UHNW environment, a collegiate rather than territorial temperament, and the track record to land as a peer to seasoned incumbents, existed in single figures in the London market.

Firat led the search. The mandate was run under a codename known only to Firat, the Principal and the Family Office Director. The EA and the CIO were briefed only once a shortlist was ready for internal interviews.

Oplu mapped the active Chief of Staff population across London single-family offices. First meetings focused on judgement scenarios rather than CV review, followed by structured referencing with former Principals and senior colleagues. Candidates were asked to talk through live operating dilemmas without a prepared framework, so the reasoning could be assessed in real time.

The candidate was placed within the agreed scope and remains in the seat. The Family Office Director has since noted that the Principal's weekly meeting volume has rebalanced, and the client has engaged Oplu on a subsequent investment hire into the same office.

Chief of Staff to Principal is a judgement role, not a scope role. The search succeeds or fails on temperament, discretion and the ability to hold decisions under pressure. Scoping the brief around those attributes, and testing for them directly rather than inferring them from title, is how we avoid the repeat failure pattern this client had already experienced.