Secretary General, Gas Infrastructure Europe
Boyana Achovski has been the Secretary-General of GIE since 2016.
Boyana started her European affairs career in the European Parliament in Brussels and led the Analysis and International Operations Division in Bulgartransgaz, later joining GIE in 2012 as the first secondment of the Bulgarian gas infrastructure operator to the European association. She also chaired the Steering Committee of GasNaturally twice, the coalition of Europe’s whole gas value chain.
Boyana graduated in International Economic Affairs, specializing in International Finance. She holds a master’s degree in finance and management of international Associations from the Solvay Brussels School. She also obtained a certificate in women’s leadership from the University of Oxford.
In 2023, Boyana won the award of the most influential Energy Women Leader of Central & Eastern Europe. Committed to advocating for greater gender equality and diversity in the energy transition, she is a Member of the Board of WiRA (Women in Renewables Alliance), a global network of professional women in the renewable energy sector and is part of WoNY, an alliance promoting gender diversity in the CEE-SEE region.
Tobias Bühnen
Policy Manager
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. In addition, he also works on topics related to Sector-Coupling and CCUS.
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.
Scarlett Mertin
Policy Advisor
Biography expected
Alexis Kontoghiannis
Policy Advisor
Since October 2024, Alexis Kontoghiannis has been working as a Policy Advisor for the Gas LNG Europe column (GLE) within GIE. His work focuses on the current and future role of LNG terminal infrastructure operators in contributing to the REPower EU and EU Green Deal targets. He also works on topics related to the European Hydrogen Backbone (EHB).
Before joining GIE, he worked in large chemical companies, then on energy and sustainability issues within the European Commission and in a consultancy.
Alexis holds an Executive Master’s degree in European Studies from the College of Europe, a Master’s in Environmental Studies from Sciences Po Paris, and a Chemical Engineering degree from the National Chemistry Graduate School of Montpellier.
Marx Janssens
Policy Advisor
Since January 2025, Marx Janssens has been serving as a Policy Advisor at GIE, in charge of the CCUS area. In this role, he leads carbon capture, utilization, and storage (CCUS) initiatives to support the EU Green Deal and REPowerEU objectives, with a focus on policy advocacy and stakeholder collaboration.
Before joining GIE, Marx worked as a Project Manager in the Corporate Strategy & Business Development department at the Dutch Gas Transmission System Operator, Gasunie, where he was involved in cross-border CCS infrastructure projects. Earlier, as a Project Manager in the Corporate Finance department, he led the development of a novel financial model to quantify and monetize the societal and environmental impacts of large-capital investments, supporting strategic decision-making at Gasunie.
Marx holds a Master’s degree in Economics from the London School of Economics (LSE) and graduated with First-Class Honours in Economics from University College London (UCL).
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.
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.
Mahtab Jalali Moghaddam
Communication Officer
Biography expected.
![🚨🗺️ Updated System Capacity Map 2025 availableWith GIE & ENTSOG collaboration, explore the latest:
✔️ European gas infrastructure & capacities.
✔️ Gas demand & supply data (2023-2024).
✔️ Updated import points & transmission capacities.
✔️ Network grid projects from TYNDP 2024.📥 Download or order your hardcopy map today: [Link in bio!]#GasInfrastructure #EuropeEnergy #GIE #ENTSOG #energymap](https://www.gie.eu/wp-content/plugins/instagram-feed/img/placeholder.png)