For each job, list only the company name, your position, employment dates in years and three to five bullet points to describe your responsibilities. (work.chron.com)
Be strategic about the placement of employment dates on your resume and keep your current position short and sweet. (greatresumesfast.com)
When listing employment dates on your resume, you don't need to list the month and year if you were in a position for over a year. (thebalance.com)