David Caldwell

Transportation analyst and engineer. Senior Engineer with Parsons Brinckerhoff (Sydney)

Chairman, Railway Technical Society Australasia (Engineers Australia) NSW section

Formerly worked with TTG (London), Interfleet (London), WorleyParsons (Sydney) and TMG (Sydney)

Former Co-founder of London's YourJobDone.com, SMS-driven market place for getting jobs done superfast

Alumnus of Mechanical Engineering at the University of New South Wales (Honours)

Awarded by Engineers Australia and the Institution of Railway Signalling Engineers

In Sydney. four-year resident of London. Occasional resident of San Francisco