Answers
How do you choose an executive search firm?
Choose an executive search firm on access, alignment, and accountability: the network to reach passive talent your team can't, an incentive model that rewards outcomes over activity, and a guarantee that keeps the risk with the firm. Sector fit and genuine confidentiality matter more than brand size.
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Access over reach
The question isn't how big a firm is, but whether it can reach the specific people you can't. Ask who's actually in its network, how it reaches passive candidates, and whether mandates are exclusive. A firm fishing the same public pools as your own team adds little.
Aligned incentives
Retained fees are billed whether or not you hire; success-only fees are earned only when a hire signs. The Quantum Club works on No Cure, No Pay (25%, no retainer), backed by a guarantee set out in your agreement: the firm carries the risk, which sharpens the shortlist. Weigh the objection too: in 2021 Harvard Business Review argued that a consultant paid only on a hire makes no money on an internal candidate, a critique set out in full in the answer on retained versus contingency search. Whatever the model, ask the firm to set its shortlist beside your internal candidates.
Proof and confidentiality
Look for a track record in your world and a real confidentiality standard. The Quantum Club has placed 120+ executives across 40+ industries, runs confidential searches by default, and confirms every approach with the hiring principal first. A complimentary five-candidate trial lets you judge quality before committing.
A candid assessment, and the terms in writing
Ask each firm what it cannot do as well as what it can. The AESC, the executive search profession's standards body, says its member firms give clients a candid assessment of their own capabilities, including their resources, their knowledge of the function and industry, and their understanding of the market, and will not take on an assignment for which they are unqualified. It expects the terms of an engagement in writing: the lead advisor who will serve the client, the scope, the timing, the fees and payment schedule, the deliverables, and terms that may cover guarantees, off-limits arrangements, conflicts and data management. Its members disclose a potential conflict of interest and resolve it with the client. So ask which organisations the firm will not recruit from while it serves you, and whether it works for anyone competing with you for the same people.
The firm carries your employer brand
For many passive candidates, a search firm's approach is the first contact they have with your company: the firm is an extension of your employer branding. At senior level, employer brand is what makes a passive candidate take the call, and the process keeps writing it — a coherent brief, interviews that start on time, an answer that arrives. Ask how a firm treats the people who say no; they outnumber the one who signs.
A firm that will challenge the brief
A second test comes before the search starts: whether the firm will tell you the brief is wrong. Sometimes the research shows few credible people at the scope or the package, and the brief changes; sometimes the seat doesn't need a permanent hire yet, and a fractional executive bridges to one. A firm paid only on the outcome can afford that honesty.
Choose it as you would choose a person
The same HBR article is practical about the choice itself. It advises using search consultants only in special situations, for example when internal candidates are unsuitable, when the right external candidates cannot be identified or reached without help, or when a company is entering a new business, region or period of strategic change. It then treats the selection as any other people decision: ask for recommendations, consider several firms, and check references. Meet the person who will run the search, not only the one who sells it, and ask a past client what happened after the hire.
What happens after the signature
A search should not end at the offer. The AESC says a firm's responsibility does not end when the candidate accepts, and that its members are available to help with onboarding and integration. Read the guarantee as closely as the fee: what it provides, for how long, and in what form. Under The Quantum Club's general terms, each candidate is guided personally, assessments included, through to onboarding; a guarantee is honoured as a free replacement search or a credit against the next placement, never as a cash refund; and a claim is made in writing within fourteen days of the end of the hire's employment.
Frequently asked
Should I use a big search firm or a specialist?
Specialist access usually beats brand size. What matters is whether the firm can reach the exact talent you need and stands behind the outcome with a guarantee.
What questions should I ask a search firm?
How they reach passive candidates, whether the mandate is exclusive, how they're paid, what guarantee they offer, and for proof in your sector.
How can I try a firm before committing?
The Quantum Club offers Club Promo, a complimentary five-candidate trial on one mandate, so you can see the calibre before any fee.
Can I read a firm's terms before the first call?
You should be able to. The Quantum Club publishes its general terms and conditions in full, in Dutch, at thequantumclub.com/legal/, alongside its member terms and privacy statement. They set out the fee and what it is calculated on, when it falls due, how the guarantee is honoured, and how long an introduced candidate stays protected.
Sources
- Robert Half Japan: What is a recruitment agency? How it works, fees, and the hiring process (2025) (opens in a new tab)
- Harvard Business Review: The High Cost of Poor Succession Planning (2021) (opens in a new tab)
- AESC: Client Bill of Rights (opens in a new tab)
- The Quantum Club's general terms and conditions (in Dutch)
Hire through the Club.
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