Your Vector account is one sign-in for Vector Engineer and every other Vector app, so deleting it removes it from all of them. Your email address and job title are removed, your sign-in is destroyed, and your Vector Engineer seat ends so your company can give it to someone else.
What stays
Your name stays where you did the work: deliverables you owned and signed, gate decisions, reviews and findings. A project's record only counts if nobody can change it afterwards. Open work you own, sign-offs waiting on you, projects you lead and gates you keep are each marked as needing someone new.
Delete it
1Open Settings and tap “Delete My Account” at the bottom.
2Read what happens and what stays.
3Prove it's you: type your password. If you sign in with your company, tap “No Password? Email Me a Code” and enter the 6-digit code from the email instead. In a Try the Demo copy, nothing is needed.
4Tap “Delete My Account”, then “Delete” to confirm.
This can't be undone. A company's last admin can't delete their account until another admin is named, so the company is never left without one.