You must be an established solutions provider headquartered in the UK or the Republic of Ireland serving the financial services sector. If you also serve other markets, so much the better.
You would likely have 20 to 50 employees and be generating revenues of some £1m to 2m p.a. However, if you are close to either of these criteria and think your company otherwise fits the bill, then please apply. The key thing is, you must already have ‘real’ customers generating ‘real’ revenues.
You should also be privately held (i.e. not listed on any public stock exchange), though you may have external investors. And needless to say, you must not be a subsidiary of, or backed by, a competitor to InterSystems.