Yes and no. I think it's useful to show some detail in recent roles, or in jobs where you feel you have something compelling to talk about. But if it's from mor

Yes and no. I think it's useful to show some detail in recent roles, or in jobs where you feel you have something compelling to talk about. But if it's from more than 10 years ago, it's probably no longer relevant. I still list all the companies I've worked at, with dates and city, and either my job title or a one-line summary of what the job entailed. Over one-line and it gets edited to fit. Most of the companies I worked for in the early days no longer exist, have moved offices, or it was so long ago I'd have no idea who still works there who might remember me for a reference, so it seems pointless giving more details. When I last updated my CV, I had good chunk of information about my previous 2 jobs to give any potential interviewer a range of things they might want to ask me about. I always considered it good practice to check-in on my CV once or twice a year and just add a line for everything I'd worked on recently... when you actually want to polish up the CV for a job, it makes it much easier if you have something to remind yourself when you did N years ago. Although having said that, I worked for a FAANG for a couple of years and never updated my CV because it was all for unreleased products and covered by an NDA. And when I left there, I was doing my own thing and found a contract by word-of-mouth, and as a result my CV just stops 5 or 6 years ago. Personally, I also try to cut stuff out of the CV so that it prints out onto 2 sides of A4 (assuming they just take my word file and print as-is) - 1 isn't enough room for any detail, but beyond 2 it's easy to include stuff that isn't useful. As for being 40, that's not that old. I'm closer to 50 and haven't ever really noticed any age discrimination anywhere I've worked - if anything it's worked in my favour most places.