Ask references for a concrete decision the candidate made, what evidence they used, who implemented it, what changed and what remained unresolved. Speak with a founder and, if possible, an execution partner. A good reference call tests the working relationship as well as the final result.
Choose references that resemble your problem
One enthusiastic founder who bought a brand refresh may tell you little about running a B2B pipeline with a lean team. Ask the candidate for a reference from a company with a similar stage, sales motion or constraint. If possible, speak to both the founder who set the mandate and a marketer, salesperson or agency partner who had to work with the candidate each week. Their views reveal different parts of the job.
Tell the reference the role you are hiring for. You are not asking whether the candidate is generally talented. You are testing whether they can take responsibility for the decisions your company is currently unable to make. The hiring guide helps define that mandate before reference calls begin.
Ask for one decision, not a testimonial
Start with: “What was the most important marketing decision this person made?” Follow with “What evidence did they use?”, “Who disagreed?”, “Who carried out the work?” and “What would have happened without them?” A vague answer such as “they improved our strategy” is less informative than a specific change to target customers, sales narrative, budget or team structure.
Do not stop at the result slide. Ask what the baseline was, how long the work took, and which changes came from sales, product or market conditions. If a reference cites a revenue gain, you need to know what the candidate actually controlled. Good candidates should be comfortable with shared attribution and limits.
Test the operating relationship
Ask how quickly the candidate responded when a decision could not wait for the weekly meeting. Did they give clear briefs to the team? Did the founder still have to approve every material step? When the first plan failed, did the candidate change their hypothesis or push for more spend? These questions distinguish an embedded leader from someone who produces recommendations and leaves the founder to manage them.
For a hypothetical founder hiring to fix unclear ownership, a useful reference might say: “They stopped three campaigns, narrowed the target segment, gave our marketer a weekly decision log and handled the agency review.” That description is testable. “They were a great strategic partner” is pleasant but incomplete. The scope guide gives more criteria to compare.
Ask about the ending
Every fractional engagement should leave the company more capable. Ask what documentation, reporting cadence, account access and team knowledge remained when the candidate left or reduced hours. Was a permanent hire able to take over? Were there unresolved dependencies? Ask the reference what they would put in the contract differently if they hired again.
Apply this to your business
Use the same six questions with every reference and write the answers beside the mandate. Do not turn the conversation into a popularity vote. Look for repeated evidence about judgment, ownership, execution and handover. If those remain unclear after two reference calls, request a focused working session with the candidate before committing to a long engagement.
Frequently asked questions
Should I only speak to the candidate's most successful client?
No. Ask for a reference from a similar stage or problem and, where possible, one engagement where the plan changed. The latter can show how the candidate handles uncertainty and disappointment.
Can a reference prove a claimed revenue result?
A reference can corroborate scope, decisions and context, but attribution is often shared across product, sales and market conditions. Ask what the candidate controlled and what evidence supports the number.
Comparing fractional CMO candidates?
Share the mandate and the questions you cannot answer from a portfolio. Mohit can help you define what evidence to request before a hiring decision.
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