GIE team

Roxana Caliminte
Deputy GIE Secretary General

Roxana has been the Deputy Secretary General of Gas Infrastructure Europe (GIE) since 2017. GIE is the voice of the European gas infrastructure operators, including gas pipelines, storage and LNG terminals. It has 70 members across 26 countries. Before joining GIE, she worked for the Romanian gas transmission operator Transgaz, where she was responsible for the company’s relations with the EU and national governments. She’s also worked in the Romanian Parliament as an advisor on international relations and economic affairs. Roxana holds a Master’s Degree in Business Administration and German. She has studied in Germany, Belgium and Russia. She was the coordinator of the now defunct EU-Russia Gas Advisory Council. She is a visiting lecturer at the Bucharest Academy of Economic Affairs.

roxana.caliminte@gie.eu

Roxana Caliminte
Roxana Caliminte

Gabrielle Lelievre
Communications Manager

Gabrielle has served as the GIE Communications Manager since December 2023 and has been part of the GIE team since 2020, initially joining as a Communication Advisor. In her role, she directs the association’s communication strategy to raise awareness about the vital role of gas infrastructure in bolstering Europe’s energy resilience while advancing the decarbonization of the European economy.

Prior to this position, Gabrielle worked within the EU institutions under the leadership of MEP Jerzy Buzek, serving in the secretariat of the European Energy Forum. This forum comprises MEPs from various political groups and representatives from the European Commission, regulators, and industry leaders across the European energy landscape.

gabrielle.lelievre@gie.eu

Gabrielle Lelievre
Gabrielle Lelievre

Bogdan Simion
Data Analytics Manager

Bogdan has more than 15 years of experience in the gas, oil and power industry.

He has been working for GIE since 2018, responsible for Data Analytics, Gas Transmission Europe and System Operation and Development Area, covering subjects like Security of Supply, Methane Emissions Management, Transparency and Digitalisation.

Backed by a Bachelor of Science (BS) in Physics from Iasi University and an Energy MBA from the Bucharest University of Economic Studies, Bogdan has previously worked for OMV Petrom as Business Developer and Project Manager in the Gas and Power Division, Gas Logistics, as well as Project Manager in M&A department.

bogdan.simion@gie.eu

Scarlett Mertin
Policy Advisor

Biography expected

scarlett.mertin@gie.eu

Scarlett Ann Mertin
@MertinScarlett

Tobias Bühnen
Policy Advisor

Since February 2021, Tobias Bühnen has been working as a Policy Advisor in the Hydrogen Area within GIE, focusing on the current and future role of gas infrastructure operators in contributing to the REPower EU and EU Green Deal targets.

Before joining GIE, he worked on European affairs within the Regulatory & Public Affairs Department of the German Gas Transmission System Operator ONTRAS.

Tobias holds a Master’s degree in European Studies from Maastricht University and a Bachelor’s degree in Economics from the University of Cologne.

tobias.buehnen@gie.eu

Tobias Bühnen
Tobias Bühnen

Malika Khalidi
Office Manager

Biography expected.

malika.khalidi@gie.eu

Mayra Pena
Junior Assistant

Biography expected.

mayra.pena@gie.eu

David Defour
Chief Technology Officer

As CTO, David is in charge of GIE’s REMIT reporting by gas infrastructure operators towards ACER, the European Union Agency for the Cooperation of Energy Regulators. He also manages GIE’s Transparency Platforms and Inside Information Platform for Urgent Market Messaging (UMM). Covering both regulatory and technical aspects, this is further expanded with several data usage publications such as gas infrastructure maps and data reporting tools which are well recognised within the industry.

David has been with GIE since its inception in 2001. Prior to his activities within the gas infrastructure industry, he has worked for Unilever (1996-2000) as well as the maritime sector (Cast Terminal Europe, Zeebrugge and Ghent Port Authority) and several other dedicated IT projects.

David holds a Master in applied economics with international business specialization (University of Leuven, VLEKHO Business School, Campus Brussels) since 1994 and a PostGraduate in Maritime Sciences since 1995 (University of Ghent, Law department), focussed on port operations.

david.defour@gie.eu

Francesco Gabrielli
EU Affairs intern

Biography expected