If you're set on Mef job offers in London, there aren't very many as it stands: we count 2. Check back soon to see if we could find more. Familiarise yourself with skills like Wcf, Mvvm and Prism to give yourself the edge over the competition.
As it stands, there are neither internship vacancies nor junior positions available for Mef. Sign up for Jobspotting to get notified as soon as some become available. Among the companies who look for Mef employees, there are currently no startups. The bulk of employers in this area advertise their job opportunities through HR agencies. If you'd rather not see such job offers, you can filter your feed to exclude them. Have you seen which other skills are in demand in this region?