PwC, the world’s biggest professional services firm, has launched an online market place matching freelancers with internal projects, as its new global chairman seeks to ride a global trend towards a “gig economy”. The firm, which is the largest of the Big Four assurance and advisory firms by revenues, has launched what it calls “Talent Exchange”, an online platform that directly connects independent professionals with PwC teams. Freelancers register, upload their CVs, then apply to work on the firm’s client projects — from IT implementations, to product life cycle management, to anti-money laundering.