You don't have to pay them to learn. I'm also a generalist freelancer and those general skills make me as productive as most specialists, even accounting for ra

You don't have to pay them to learn. I'm also a generalist freelancer and those general skills make me as productive as most specialists, even accounting for ramp up time. If it does take me more time to learn a new tool, I don't charge for those hours. This doesn't apply to everything, but Clickhouse is not so different from other analytics tools it requires a specialist.