Honestly, really depends on the Startup and the way they're depositing your salary
If they're sending it directly in USD, you'll need to have a word with your bank
From personal experience, this can be quite a hassle and you do not end up getting a very good exchange rate
If you're providing them invoices every month, then seems like you're being hired as a consultant and not a salaried individual, so please file your taxes accordingly, depending on the amount, you might also have to get GST as well
If your employer is involving an employee management platform like Deel, things might be different