Working a lot will almost never lead to "a promotion". The environment you are in doesn't see the issue with you working 70 hours and did nothing to mitigate i

Working a lot will almost never lead to "a promotion". The environment you are in doesn't see the issue with you working 70 hours and did nothing to mitigate it. That is poor management, poor product definition and poor program management. Run from these situations. Startups that tout "we work hard, we play hard", avoid them. That is synonymous with "you work hard, we hope to profit". Sadly at a YC recruiting event some years back there was an SF startup touting "we are a family" and "we meet with customers after hours to get input" as positive things. I wish I recalled the name of the startup. Unless it is your own startup or you have significant equity (founders shares), your 70 hours is a nice charitable gift to management and the investors. I've been guilty of this. Caring about the company, product, etc. only to pull my head out of my ass, realize the negative impact on my life and walked away before the 1st year cliff of vesting.