Sean Austin has over 40 years of both domestic and international industry experience focused on finance, accounting and administration. Working with Mr. Spickelmier, he is also currently the Controller for Discovery Energy Corp., an Australia focused exploration and production company. Prior to joining Sintana, he worked with Mr. Manner as a Director, VP and Chief Financial Officer for Irvine Energy USA, a wholly owned subsidiary of a UK public company. At Westside Energy, working with Mr. Spickelmier and Mr. Manner, he was a VP and Chief Financial Officer, Corporate Secretary and Treasurer. For more than two decades, Mr. Austin was employed by HESS and held senior management positions in New York, London and Houston. From 1995 to 1999, he was Vice President and Corporate Controller and subsequently was Vice President – Worldwide Exploration & Production Finance and Administration. He holds a BBA in Accounting from the University of Notre Dame and a MBA from the Amos Tuck School, Dartmouth College.
Senior Management
Our senior management team is listed below. Click each panel to view biography details. To contact Sintana Energy please use the details on the contacts page.
Robert Bose
Chief Executive Officer & Executive Director
Robert Bose
Chief Executive Officer & Executive Director
Mr Bose has more than 28 years of relevant experience. He is the Chief Executive Officer and a member of the Board of Directors of the Company. Additionally, Mr. Bose is the Managing Member of Charlestown Energy Partners, a private investment vehicle associated with a New York-based family office that has been making investments globally in the upstream business since 2016. Robert is also a non-executive director of New Zealand Energy, Corp., a company providing gas, gas storage and liquids solutions to support the domestic energy economy in New Zealand, and is also on the Board of Managers of Black Bayou Energy Hub, a private company developing a gas storage platform on the Gulf Coast of the U.S. Prior to joining Charlestown Energy Partners, Robert spent 17 years in the Investment Banking Group at Scotiabank, latterly as Managing Director and Industry Head, Global Power & Utilities. Mr Bose holds a BA (Honours) in Economics from Queen’s University, Kingston, Ontario.
Eytan Uliel
President & Executive Director
Eytan Uliel
President & Executive Director
Mr. Uliel has more than 27 years of relevant experience. He was the Chief Executive Officer of Challenger Energy Group plc from May 2021 until the Challenger Group was acquired by the Sintana Group in December 2025, having previously served as the Challenger Group’s Commercial Director since 2014. Eytan is a finance executive with a specific background in the oil and gas industry. He has significant oil and gas industry-specific experience in mergers and acquisitions, capital raisings, general corporate advisory work, public market takeovers and transactions, financial controls and audit, private treaty acquisitions and farm-in / farmout transactions. Mr Uliel has also held non-executive roles in various ASX and SGX listed companies and various substantial private companies and funds. He holds a combined BA / LLB degree from the University of New South Wales, Sydney, Australia.
Jonathan Gilmore
Chief Financial Officer & Co-Company Secretary
Jonathan Gilmore
Chief Financial Officer & Co-Company Secretary
Jonathan Gilmore is the Chief Financial Officer and co-Company Secretary. He has extensive international, technical, corporate, and commercial finance experience within the natural resources sector. Jonathan’s prior experience includes five years in audit managerial roles with EY London, focusing on mining and energy clients; internal audit and financial controller roles for mining and processing operations at Glencore’s Kamoto Copper Company in the DRC; and serving as a Commercial Business Partner at Cushman & Wakefield in the UK. He joined Columbus Energy Resources Plc as Group Financial Controller in September 2018, ahead of its merger with Challenger Energy in 2020. Jonathan holds a Bachelor of Commerce (Accounting) from the University of Western Sydney and is a Fellow of the Institute of Chartered Accountants Australia and New Zealand.
Randy Hiscock
Technical Director & Managing Director Uruguay
Randy Hiscock
Technical Director & Managing Director Uruguay
Randolph (Randy) G. Hiscock has extensive global energy expertise with specific focus on Latin America & the Caribbean. Randy has a proven track record of discovering hydrocarbons, deal/acreage delivery and offshore exploration management in Guyana, Brazil and Atlantic Canada. He was Shell’s General Manager for the Americas New Venture and Business Development for approximately 10 years based in Houston. Before Shell, he was EnCana’s South American VP for Exploration. Randy has a Master’s of Science (Geology) and an MBA in International Oil &Gas Studies from Memorial University in Canada and is a member of AAPG and PESGB.
Sean Austin
Financial Controller, Co-Company Secretary and Treasurer