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Executive team

Deborah Flint

President and Chief Executive Officer

Deborah Flint joined the Greater Toronto Airports Authority as President and Chief Executive Officer in February 2020, following more than 4 years as CEO of Los Angeles World Airports and 24 years serving in executive roles in the aviation industry.

At Los Angeles World Airports, Deborah initiated the $14-billion modernization of its terminals, runway improvements, and a comprehensive ground transportation and transit program that brings the first rail line to LAX. 

At GTAA, Deborah began her leadership at the onset of the global pandemic and has led Pearson to being globally recognized and awarded for its Healthy Airport program.  She has developed a new Strategic Plan for the GTAA that is framed by the North Star Statement: “Pearson Strong:  Creating the Airport of the Future by building our business in a Smart, Healthy, and Profitable Way”.

As a recognized leader within the international and U.S. aviation community, Deborah serves as a member of the Airports Council International World board and the Airports Council International – North America board. She previously served on the U.S. DOT Drone Advisory Committee, and as Chair of the Oversight Committee of the Transportation Research Board’s Airport Cooperative Research Program. Beyond the airport industry, she has served on the board of the Federal Reserve Bank and is a director of the Honeywell Corporation. 


Mark Carbonelli

Chief Human Resources Officer

Mark is a senior HR executive with over 20 years of broad experience in both business and academic ventures.  He has held senior HR executive and officer roles in various organizations including large global organizations, domestic market leaders and high-growth start-ups.  Marks’ experience includes all major facets of the HR discipline including total rewards, talent management, organizational transformation, change management, labour relations in addition to board level and other advisory work.  In addition, Mark has taught HR and labour relations courses at both the undergraduate and graduate level and joined the York University faculty in 2002.  Mark holds a BA (Economics), Master of Industrial Relations (MIR) and Master of Business Administration (MBA) and is a graduate of York University, University of Toronto and the London School of Economics.


J’Maine Chubb

Chief Financial Officer

J’Maine joined the GTAA as Chief Financial Officer (CFO) in February 2023. He is a seasoned CFO with more than 20 years of experience in operational environments. He brings expertise in leading large-scale accounting, finance, corporate strategy, supply-chain management, business development, audit and capital planning initiatives and teams.

J'Maine was most recently CFO of TravelWIFI in Houston and spent six years as Controller and CFO for the Houston Airport System, where he was responsible for monitoring overall financial health and working with the executive management team to establish long-range financial goals, strategies and plans, while also ensuring that short-term funding needs were met.

Prior to Houston Airport System, J’Maine held business unit CFO and senior finance and accounting management positions at CITGO Petroleum Corporation, Halliburton and Schlumberger. Prior to his experience in the oil-and-gas sector, J’Maine held accounting positions at Toyota, the State of Georgia and the State of Michigan.

J’Maine holds a Master of Business Administration degree and a Bachelor of Science in Accounting degree from Wayne State University. He holds Certified Global Management Accountant (CGMA), Certified Management Accountant (CMA), Certified in Strategy and Competitive Analysis (CSCA) and International Airport Professional (IAP) designations.

Bernardo Gogna

Chief Infrastructure Officer

Bernardo is the GTAA’s Chief Infrastructure Officer, leading the Airport Development and Technical Services team.

He is responsible for all design, construction, engineering, asset management, facilities maintenance, environmental services and energy/utility management at Toronto Pearson.

Prior to joining the GTAA, Bernardo’s work spanned more than 30 years of experience in major aviation infrastructure development internationally, including at Doha, Istanbul, Amsterdam, Los Angeles and Philadelphia, plus other non-aviation projects.

Most recently, he was the MEA Senior Vice President, Aviation, with AECOM based in Riyadh. He was previously Chief Development Officer at Los Angeles World Airports, Capital Program Director at the Royal Schiphol Airport Group, Program Director for the New Doha International Airport for the Qatar Civil Aviation Authority and Associate Principal at KPF in New York.

Bernardo is an architect and holds a Master’s degree from Politecnico di Milano and Pratt Institute in New York.

Katherine (Kath) Hammond

Vice-President, General Counsel, Corporate Safety and Security

Kath Hammond is a senior corporate lawyer with 25 years of legal and commercial strategy experience, gained as a commercial associate at Torys LLP, followed by progressively more senior in-house and commercial strategy roles for electricity and infrastructure organizations across the public and private sectors. Having held the Assistant General Counsel role at Ontario Power Generation, and most recently, the Director Legal role for OMERS Infrastructure Inc., Ms. Hammond has a proven track record as an innovative thought leader, a strong and influential stakeholder manager and an engaging and supportive leader and mentor.

Ms. Hammond sits on the board of directors of the University of Toronto Schools. A member of the Ontario Bar since 1995, Ms. Hammond earned her BA at Huron College and the University of Western Ontario, and her LLB at the University of Toronto Faculty of Law.

Khalil Lamrabet

Chief Commercial Officer and Interim COO

Khalil joined the GTAA as Chief Commercial Officer in February 2023. Khalil is a long-tenured executive with over 20 years’ experience in the aviation industry and hands-on experience of the full 360 view of the industry, including airports, airlines and aircraft manufacturing.

Khalil has a strong focus on airport business development, commercial relationships management and driving increased revenue. Prior to joining the GTAA, he served as Chief Executive Officer of the Saudi Air Connectivity Program, Senior Vice President of Aviation Development at Abu Dhabi Airports and Director of Aviation Business Management at Dubai Airports.

Before working in the airport side of the aviation industry, Khalil was in route planning and analysis at Emirates Airlines. Earlier in his career, Khalil was part of the sales and marketing team at Bombardier Aerospace.

Khalil holds an Aerospace Engineering Masters Degree from McGill University and a Bachelor of Aeronautical Engineering from École Polytechnique de Montréal in Canada.

Karen Mazurkewich

Vice-President, Stakeholder Relations and Communications

Prior to joining the GTAA, Karen was Vice-President of Strategic Communications at MaRS, the largest innovation hub in North America. At MaRS, she also built a unique in-house agency and content studio supporting hundreds of entrepreneurs and founded a new type of think tank that produces data-driven insights about the Canadian ecosystem.

Karen spent a decade as a senior journalist at the Wall Street Journal in Asia and the Financial Post in Toronto, covering a wide variety of topics ranging from business innovation to international art markets. After leaving journalism, she co-founded a tech start-up, and managed her own consulting practice to help traditional media companies tackle digital transformation.

She has authored reports on innovation for the Canadian International Council and the University of Waterloo, programmed events for various creative agencies such as Interactive Ontario, and directed documentaries for the Discovery Channel. Karen began her career as a communications officer for the National Film Board of Canada. She is the author of books on Canadian animation and Chinese antique furniture.

Brian Tossan

Chief Technology Officer

Brian Tossan, the Chief Technology Officer at the Greater Toronto Airport Authority (GTAA), brings with him over two decades of extensive experience in both the automotive and technology sectors. In his role as the leader of Information Technology and Innovation at GTAA, Brian serves as a driving force for technological advancement, pioneering new horizons in airport operations, and enhancing passenger experiences through human-centric solutions.

Before joining GTAA, Brian held the position of Director at General Motors' Canadian Technical Centre. In this role, he oversaw product engineering with a strategic focus on vehicle software, electrification, and autonomous driving systems. Under his guidance, significant milestones were achieved, including the successful design and launch of a new engineering campus in Markham, Ontario, and the establishment of the 2908 Innovation Lab at Communitech in Waterloo. Brian's global influence expanded further when he assumed the role of Director of Global Innovation at GM. In this capacity, he played a pivotal role in establishing and nurturing internal startups across diverse sectors and new markets. Brian was a staunch advocate for new technology roadmaps, spearheaded tech startup investments, and fostered strategic global partnerships.

An accomplished academic, Brian holds an MBA in Strategic Management from Indiana University - Kelley School of Business, a Master of Science in Engineering from Purdue University, and a Bachelor of Applied Science from the University of Toronto. Additionally, he currently serves on the Engineering Dean’s Advisory Council at the University of Waterloo.