Quirke joins the company on 24 June. He was previously with Tullow Oil, leading the oiler’s ‘treasury function’ between 2003 and 2017, and more recently was advising Assala Energy following its acquisition of Shell’s assets in Gabon.
"We are delighted to persuade someone of David's calibre and experience to join us for the next phase of our development,” said Brian Larkin, chief executive.
“We are building a team that will enable United to fulfil the undoubted potential of our asset base and to further grow this company."
Larkin added: “David's experience in an international FTSE 100 company and extensive banking relationships will strengthen our ability to develop new funding avenues to fuel our growth.
“His understanding of the capital markets and corporate finance, particularly in the E&P sector, will expand our financial options for both acquisition and operations."