Andreas Merentitis is Chief Data Officer at OLX, leading 150 people implementing innovative AI business solutions. With 20 years ML/AI experience and a PhD from National Kapodistrian University of Athens, he's published 50+ research papers with 1,500+ citations. He focuses on Agentic AI transforming marketplaces and practical applications driving business impact.

Christian Gisy is OLX's CEO, bringing 20+ years of executive leadership experience to scaling marketplaces. He joined OLX as CEO in 2024. Before that, he held multiple C-level roles across digital entertainment, online marketplaces, and private equity, leading major European marketplace companies through growth and transformation. He also serves as a board member and strategic adviser to Tokki Fashion and is Chairman of the Board of Directors at atHomeGroup. He is known for a people-first approach to sustainable growth and learning.

Marta Jakowluk is Chief People Officer at OLX Group, leading people strategy and organizational transformation across Europe and South Africa. With a background in psychology from the University of Warsaw, she has held HR and transformation roles at Leroy Merlin, Liberty Global, and Unilever. She focuses on future-ready skills, employee well-being, and how AI is reshaping leadership, culture, and workforce capabilities.

Sylvie De Wever is General Manager of Goods, Jobs and Services at OLX Group, leading categories that serve millions of consumers across Europe. She joined OLX in 2022 as General Manager of OLX in Europe and moved into her current role in 2024. With extensive experience across Poshmark, Blinkist, eBay, and Accenture, she brings deep expertise in go-to-market strategy, operations, and international expansion, scaling brands and leading cross-functional teams across geographies. She also serves as a board member at OfferUp.

Andrew Garrihy is Chief Marketing Officer at OLX Group, responsible for driving marketing strategy and embedding AI across the function. He previously served as CMO of OLX Autos and Senior Advisor to the company before joining the Executive Team in 2024. Prior to OLX, he held senior marketing roles at Huawei, Qualcomm, Samsung, and Vodafone, leading global teams across EMEA, Asia, and LATAM. His experience spans strategic and technical disciplines, including hands-on work building digital products and embedding AI into day-to-day marketing operations.

Nicolas Loeff is co-founder and CTO at BrainLogic AI, the company behind Zapia, a personal AI assistant used by more than five million people across Latin America (and now Europe) to solve real-world problems. With two decades of experience, Nicolas has led teams building and deploying large-scale AI models for applications ranging from financial trading to global retail. Before Zapia, he led AI teams at Google and served as Director of Engineering for Search AI at Etsy. A Fulbright Scholar with a PhD in AI, his research in time series, computer vision, and language modeling has earned thousands of citations.

Gertrud Kolb is Chief Technology Officer of Scout24 Group and a member of its Executive Leadership Team. She leads the company's technology strategy across AI, data, architecture and information security, with a focus on building AI-native products and operating models.
With more than 20 years of experience in technology and product leadership, she previously served as CTO at eyeo and held senior technology roles at Axel Springer, including CTO for BILD and WELT's digital brands.

Aleksandra Przegalińska is a Fellow at the Harvard Center for Labor and a Just Economy and Vice-Rector for Innovation and AI at Koźmiński University, where she also serves as Associate Professor. She holds a Ph.D. in the philosophy of artificial intelligence from the University of Warsaw and completed post-doctoral research at MIT's Center for Collective Intelligence. She heads the Human-Machine Interaction Research Center at Koźmiński and is co-author of Collaborative Society (MIT Press). Her research focuses on the future of work, natural language processing, social robots, and wearable technologies.

Oana Chiru is Director of Product for Jobs & Services at OLX Group, leading specialized experiences across the category. Before stepping into her current role, she held several product leadership positions at OLX, including Head of Product for Pay & Ship and Senior Product Manager for Payment Solutions. Her career includes product strategy and marketing roles at PayPal and mobile.de prior to joining OLX.

Michał Malewski is Vice President of Jobs & Services Europe at OLX Group, overseeing a $350M+ business across the region. He has spent over 15 years at OLX, rising from Business Analyst to VP through roles including Head of Operations at Otomoto, General Manager of OLX.pl, and General Manager of Central & Southern Europe. He built OLX's Jobs and Services categories into market leaders and has led the categories through their AI transformation.

Sam Burman leads Heidrick & Struggles' global Frontier Tech practices spanning Crypto & Digital Assets, Government & Defence Tech, and Health Tech. He also leads the firm's AI & Technology Officers Practice across Europe and Africa. Sam advises boards and leadership teams at some of the world's leading technology and digital commerce companies on executive search, AI leadership strategy, and organisational transformation. The primary difference being, we merged our Artificial Intelligence & Data and Cybersecurity practices with our Technology Officers Practice in the Spring, to create a newly expanded AI & Technology Officers Practice.