Adamos Hadjiantoniou holds a degree in Accounting and Finance from the London School of Economics and Political Science (LSE). In March 2018, he joined membership of the Institute of Chartered Accountants in England and Wales (ICAEW) and in October 2019 as a member of the CFA Institute. Since October 2021, he serves as a member of the CFA Cyprus Advocacy Committee.

Adamos started his career at Deloitte Cyprus in 2014 as a Consultant and was later promoted to an Assistant Manager in the Financial Advisory Services department of the company. In February 2019, he joined the real estate unit of Alpha Bank Cyprus as the Head of the Review and Analysis team, while from September 2019 he worked as a Financial Analyst in the Strategy, Planning and Development department of Logicom Public Ltd. During September 2020 until June 2022, he was working at Demetra Holdings Plc as the Chief Operating Officer and held Board positions in Demetra Holdings Plc and in the desalination companies in which Demetra Holdings Plc is a shareholder.