Former recruiter and current professional resume writer. As the other respondent said, the quick formula a recruiter might use to guess your birth year is "college graduation date - 22" or "date of first job - 22".
You should keep this fact in mind as you write a resume and decide which jobs to include, which jobs to perhaps delete, and whether you want to include your graduation date. It isn't necessary to include a graduation year or all of your jobs, so you can usually shave some years off your age "on paper" without being considered as deceptive.
Sometimes I'll add a line "Previous experience included..." to indicate that there is prior work experience, but I don't list the years.
You should keep this fact in mind as you write a resume and decide which jobs to include, which jobs to perhaps delete, and whether you want to include your graduation date. It isn't necessary to include a graduation year or all of your jobs, so you can usually shave some years off your age "on paper" without being considered as deceptive.
Sometimes I'll add a line "Previous experience included..." to indicate that there is prior work experience, but I don't list the years.