The Rule of Thumb
- 0-5 years experience: 1 page
- 5-10 years experience: 1-2 pages
- 10+ years experience: 2 pages max
- Academia / PhD: CV can be longer
What to Cut If You Are Over-Length
Remove roles older than 10 years, irrelevant hobbies, references section (say "available on request"), and obvious skills like MS Word.