Reference checks: who, when, how

Most candidates list three references on a form, never tell them, and hope. References still derail offers about 5% of the time. The avoidance is structural and the fix is fifteen minutes of preparation.

Who to pick

Three references is the standard ask. Pick:

1. A recent direct manager.The most weighted of the three. If your relationship is good, this is required. If it's not, see “What if you can't use your last manager.”
2. A peer who can speak to your work.Ideally someone you collaborated with closely on a shipped project. Their answers calibrate the manager's — companies look for consistency.
3. A skip-level or cross-functional partner. Optional, often filled by a director, PM, or designer you worked with. Adds breadth.

Avoid: friends, family, anyone who hasn't worked with you in the last 3 years. The freshness matters — reference takers ask about specific recent behaviours.

When to brief them

Two beats. First, the soft confirm: when you start interviewing, ask each reference if they're willing to be a reference if it comes up. Don't share the company yet. Just confirm availability.

Second, the specific brief: when the company asks you for references (typically post-final-round, pre-offer), text or email each reference with:

• The company name and role title.
• Two sentences on why you're a fit (so they can match the answers to the role).
• 1-2 themes you'd like them to be ready for (e.g. “you might get asked about how I handle ambiguity — the launch we did in 2023 is a good example”).
• The expected timing of the call.

This is not coaching them on what to say. It's priming them to give specific examples instead of generic praise. Specific examples make a reference; generic praise barely moves the needle.

What companies actually ask

The set of reference questions is more or less standardised:

1. How do you know the candidate, and for how long?
2. What were their primary responsibilities?
3. What are their strengths?
4. What's an area they'd need to grow into for the role we're considering?
5. How do they handle conflict / ambiguity / [specific situation]?
6. Would you hire them again?

The fourth question is the one that catches references off-guard. A reference who can't name a growth area is read as either dishonest or not paying attention; either way, neutral-to-negative for the candidate. Brief your reference to have a real, mild growth area ready.

What if you can't use your last manager?

Three plays in order of preference:

1. Use a manager from a previous role.If your last manager is unavailable, the role-before manager is the next-best. Be ready to explain why you're not using the most recent.
2. Use a senior peer or cross-functional partner who saw you closely. Less weight than a manager but better than no answer.
3. Use the manager and accept the friction. If the relationship is strained but professional, you can still use them — and the company will read your willingness to do so as honest.

The one play to avoid: lying about why your last manager isn't available. Companies cross-check on LinkedIn. “They've left the company” is verifiable; “I'd rather not use them” is honest; “they're unreachable” when they have a public profile is a flag.

The thing nobody tells you

Many companies do a backchannel reference check — asking someone in their own network who worked with you, whose name you didn't provide. This is increasingly common at senior levels and at companies with strong internal networks (former Stripe / Airbnb / Google clusters).

You can't prep for backchannel checks. The defense is consistency — be the same person across all your professional relationships. The most common backchannel reference comes from someone in a peripheral role (PM, designer, cross-functional manager) you may not have considered a primary professional relationship. Treat them well anyway.

After the check

Thank your references. A 30-second message after the call lands well, and it sets up the next reference ask in 2 years.