A few questions, if you don't mind answering:
> 400-450k
Where is that in the pay distribution? Near median? Realistically, where, comp-wise, would the average SWE plateau?
How many hours are you guys putting in a week?
What was the interview like? Did they go deep into stats/stochastic-calc/derivates-pricing/etc ?
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I'm currently in tech, making near the low end of your range. Getting promoted to the next pay scale (Staff SWE) is a lot more difficult. I'd seriously consider jumping to fintech if 400-450 was below median.