People who sew can provide many services, and so there are many relevant job titles. A person who alters clothing is a tailor. A person who makes original clothing from scratch is a designer.
A person who sews clothing is a tailor.
it is a Seamster.
The job title is analyst.
A seamstress is a person who sews and threads needles.
A person who sews professionally is a seamstress.
A landlord is a person, not a job. You are a landlord when you rent out your property. The job is property management and thus the job title is "property manager".
No, 'sews' is a verb (sew, sews, sewing, sewed).
butcher
Barista!
a order writer
Such a job title might be seamstress skilled in handwork.
It is a suffix to specify that a person is a female person doing a job. A person may have the job of a steward; a female person doing that job is called a stewardess. A person who sews is a seamster (usually shortened to semptster); a female person doing that job is a seamstress. A person who does laundry is a launderer; a woman who does it is a laundress. A person who acts is an actor; a female person doing that job is an actress. And so on. By extension, if a form with the -ess suffix is current, the root form is restricted to male persons.