Property and Equipment, Net - Summary of Property and Equipment (Details) - USD ($) $ in Thousands	Jan. 31, 2022	Jan. 31, 2021
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 34,728	$ 18,778
Less: Accumulated depreciation and amortization	(9,810)	(5,405)
Property and equipment, net	24,918	13,373
Office furniture and equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	1,318	837
Computers, software, and electronic equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	4,895	3,489
Capitalized internal-use software
Property, Plant and Equipment [Line Items]
Total property and equipment	17,917	6,959
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total property and equipment	7,490	4,568
Construction in progress
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 3,108	$ 2,925