John Greenan

John Greenan is currently the Chief Technology Officer at a company called "Silence is...".2 He is based in London, UK.2 Prior to his current role, Greenan served as the chief executive officer at Alignment Systems.1

Professional Background

Greenan has a diverse background in technology and finance. His experience includes:

• Chief Technology Officer at Silence is... (current position)2
• Chief Executive Officer at Alignment Systems (previous role)1

It's worth noting that Greenan has been involved in the financial technology sector, as evidenced by his participation as a moderator alongside Ben Jefferys, Head of Trading Solutions at IRESS Market Technology.1

LinkedIn Profile

John Greenan's LinkedIn username is indeed johngreenan, as mentioned in the query. His profile can be found on the UK version of LinkedIn.1

While there are other individuals named John Greenan in different fields and locations, such as an Undersheriff in Erie County, NY, and a Senior Lecturer in Criminology & Policing at Anglia Ruskin University, these appear to be different people with the same name.34