Professionally, this placement comes into its own where there's precision, process and a result you can check. Medicine, accountancy, analysis, editing, lab work, pharmacy, quality control, operations, software testing, systems design, a craft, restoration. Anywhere it matters to get something to the state of "it works", and where you can tell who did it badly and who did it well. In my experience a Virgo Sun is at its strongest in a role where they own a specific patch and can take it to something close to flawless, rather than spreading their attention across ten directions at once.
A corporate career comes to them unevenly. At specialist and middle-management level this person grows fast, because they're indispensable and they carry the real work. Near the top it often stalls: there you have to know how to sell your achievements, play the politics and make calls on incomplete information. Those who do reach the senior positions tend to do it either through narrow expertise — head of department, chief accountant, technical director — or by deliberately learning a bit of "volume". Those who stay at the middle levels often become the "grey cardinal": the person without whom nothing functions, but who rarely gets promoted.
Money, with this Sun, tends to be earned steadily rather than in bursts. A salary with a clear path of progression sits well, as does expert hourly work and freelancing with a stable client base. The models that sit badly are the ones where income hangs on aggressive selling and loud self-presentation. Their own business works if there's a partner handling sales and marketing while they answer for the quality of the product. I'd put it like this: the single most useful career skill for this placement is learning to talk about your work out loud, without the self-erasing "I'm just doing my job".