How often will a sales engineer also wear a customer success hat in an early stage of an SaaS startup?
Pretty darn common.
The “traditional” role of a sales engineer is to support the sales team through the close of a deal.
And as you scale, the role should likely end there. Traditional customer success can take the baton from there.
But in the earlier days, having sales engineers continue to support the customer through and after deployment makes a lot of sense. You’ve learned the issues and challenges. Stick around until the customer is fully deployed, at least.