A reference is someone willing to vouch for your work to a future employer. Usually a former manager, peer, or senior contact who's seen what you're capable of.

Three things to know up front:

  1. References don't go on the resume. Keep them on a separate document.
  2. Don't volunteer them on the application. Send only when asked.
  3. Three is the standard number. A manager, a peer, a stretch.

Who counts as a reference

  • Former direct managers. The most-valued reference type — hiring managers want to know what your boss thought.
  • Peers and cross-functional partners. Show how you collaborate.
  • Skip-level managers or executive sponsors. Senior weight if relevant.
  • Faculty advisors / project leads. Useful for early-career roles.

Avoid:

  • Family members (obvious).
  • Friends without professional context.
  • Anyone at your current employer unless your current employer knows you're leaving.
  • Anyone you fear will give a tepid review.

What references actually do

When contacted by a recruiter, your reference will get asked things like:

  • "How did you work with [Candidate]?"
  • "What were their strengths?"
  • "How would they handle [specific situation relevant to the new role]?"
  • "Would you hire them again?"

A strong reference gives concrete examples and answers warmly. A lukewarm reference is worse than no reference.

How to format a references document

Match your resume's typeface and margins:

References — [Your Name]

Jane Smith Director of Engineering, Acme Corp jane.smith@acme.com | (555) 123-4567 Direct manager 2019-2023; led a team of 6 alongside her on the Platform rebuild.

[...two more, same format]

One page max.

Ask before listing anyone

Three steps:

  1. Email each potential reference and ask if they'll serve.
  2. Tell them what kinds of roles you're applying for.
  3. Send a quick recap of the projects you worked on together.

This is a one-time setup at the start of a search.

When to send

Wait until the employer asks. Typically:

  • After a final-round interview
  • As part of an offer process
  • When the recruiter explicitly requests them

Don't volunteer in a cover letter or initial application.

What goes wrong

  • Listing references on the resume. Wasted real estate.
  • "References available upon request." Implied. Cut.
  • Stale references. 2+ years no contact = stale. Refresh first.
  • Ambushing a reference with a cold call. Always warn them.

The bigger pattern

References matter at the back end of the process. Most candidates never get to that stage. The bottleneck is getting interviews in the first place.

Sorce applies to 5M+ open jobs for you — 40 free swipes a day, AI agent submits, repeat. References come later.

For more: how to list references on a resume, how many references to have ready, job application references meaning.