Stock-based compensation - Schedule of Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands		6 Months Ended
		Jun. 30, 2022
Share-based Payment Arrangement [Abstract]
Number of options, Outstanding, Beginning balance		6,119,295
Number of options, Granted		2,103,350
Number of options, Exercised		(172,699)
Number of options, Forfeited		(164,729)
Number of options, Outstanding, Ending balance		7,885,217
Number of options, Exercisable		2,301,148
Number of options, Expected to vest	[1]	5,584,069
Weighted average exercise price, Beginning balance		$ 9.44
Weighted average exercise price, Granted		27.34
Weighted average exercise price, Exercised		3.62
Weighted average exercise price, Forfeited		25.77
Weighted average exercise price, Ending balance		14.09
Weighted average exercise price, Exercisable		4.40
Weighted average exercise price, Expected to vest	[1]	$ 18.08
Weighted average remaining contractual life (in years), Outstanding		8 years 6 months
Weighted average remaining contractual life (in years), Exercisable		7 years 9 months 18 days
Weighted average remaining contractual life (in years), Expected to vest	[1]	8 years 9 months 18 days
Aggregate intrinsic value, Outstanding	[2]	$ 52,868
Aggregate intrinsic value, Exercisable	[2]	25,676
Aggregate intrinsic value, Expected to vest	[1],[2]	$ 27,192

[1] This represents the number of unvested options outstanding as of June 30, 2022 that are expected to vest in the future.

[2] The aggregate intrinsic value is calculated as the difference between the exercise price of the underlying options and the fair value of the common stock for the options that were in the money as of June 30, 2022.