Harry Vafias founded Stealth Maritime Corp in 1999. Stealth Maritime Corp today operates twenty one 50,000 – 120,000 dwt modern double hull oil tankers all under long term charters with oil companies and traders. In 2004 he founded Stealthgas which was listed in NASDAQ in October 2005 and up to today has raised approx $500 mil from the capital markets. Stealthgas owns 60 gas ships and 4 oil tankers and is the largest company, in number of owned vessels, in gas transportation worldwide.

In 2005 Harry Vafias founded Estates Corporation Inc, a real estate company, investing in Greece, London, New York, LA and Geneva. In 2008 he became CEO of the Vafias Group, which today is the third largest shipping group in Greece with 86 vessels. In 2008 he was awarded by the NASDAQ for being the youngest CEO of a listed shipping company worldwide.

In 2010 Harry Vafias was elected vice chairman of the INTERTANKO Mediterranean panel. In the same year Harry Vafias was awarded the SEATRADE young person in shipping award. In 2012 Harry Vafias was awarded by Lloyds list newspaper for being ‘newsmaker of the year for 2012’. In 2013 Harry Vafias and StealthGas was awarded by Lloyds list newspaper for ‘best tanker company of the year for 2013’.

In 2016 was elected vice president of the consular corps in Greece. In 2018 was elected president of the consular corps in Greece. Mr Vafias is also a member of the ABS classification society committee, of the NK classification society committee, of the KR classification society committee, member of the board of the BSA (Bahamas shipowners association) and also a member of the board of BCA (Business School of Athens).