What it tests

Sustained performance across back-to-back interviews — how candidates maintain energy, consistency, and decision quality when fatigued, mirroring the real stamina demands of a Chief of Staff.

Format

1Four 30-minute interviews scheduled consecutively with no breaks between them
2Each session is led by a different interviewer from a different function: operations, finance, people, and a senior leader
3Each interviewer covers a distinct competency — strategic thinking, cross-functional influence, execution, and values
4Debrief session immediately after the final interview; hiring decision typically made within 48 hours

What to look for

Consistency of answers and judgment across all four sessions — CoS candidates often tell different stories to different audiences
Energy management: does quality degrade in the third and fourth interview?
Cross-functional fluency: does the candidate speak finance with the finance lead and people with the people lead?
Speed of context-switching between functional topics without losing depth
Whether the candidate maintains the same values and ownership orientation throughout

Adaptation guide

Run three back-to-back 30-minute sessions minimum — logistics, strategy, and values. Ensure different interviewers compare notes on consistency rather than just individual performance. The marathon format is intentional: CoS roles require sustained high performance without recovery time.

Full description

Format:

Four 30-minute interviews scheduled consecutively with no breaks between them
Each session is led by a different interviewer from a different function: operations, finance, people, and a senior leader
Each interviewer covers a distinct competency — strategic thinking, cross-functional influence, execution, and values
Debrief session immediately after the final interview; hiring decision typically made within 48 hours

Time: 2–3 hours (4 interviews, 30 minutes each, back-to-back)

What to look for:

Consistency of answers and judgment across all four sessions — CoS candidates often tell different stories to different audiences
Energy management: does quality degrade in the third and fourth interview?
Cross-functional fluency: does the candidate speak finance with the finance lead and people with the people lead?
Speed of context-switching between functional topics without losing depth
Whether the candidate maintains the same values and ownership orientation throughout

Adaptation: Run three back-to-back 30-minute sessions minimum — logistics, strategy, and values. Ensure different interviewers compare notes on consistency rather than just individual performance. The marathon format is intentional: CoS roles require sustained high performance without recovery time.