Most Active Speakers 2025
Sessionize proudly presents the list of the most active speakers in the year 2025!
Curious by nature, talkative geek who can speak in front of a public or a camera, in love with technology, especially Azure and SQL Server. I want to understand how things work and to solve problems by myself during work as in my many hobbies. Show more
Konstantinos is a passionate IT professional and Microsoft Certified Trainer with over two decades of experience in crafting and deploying comprehensive IT solutions. His expertise lies in Microsoft technologies, evident in his Microsoft Azure MVP st... Show more
Nick Doelman is an independent Power Platform specialist, trainer and coach. Nick delivers presentations, workshops and collaborates on Power Platform and Dynamics 365 projects worldwide. From 2021 to 2023, Nick worked as a Senior Content Developer a... Show more
Sander Molenkamp is a principal cloud architect and Microsoft Azure MVP with over 25 years of professional experience. He works for Info Support (http://www.infosupport.com) designing and developing customer solutions using cloud native architectures... Show more
Gerrit Grunwald is a software engineer that loves coding for around 40 years already. He is a true believer in open source and he is an active member of the Java community, where he founded and leads the Java User Group Münster (Germany), he is a Jav... Show more
Alex Merced is Head of DevRel for Dremio and co-author of "Apache Iceberg: The definitive guide" from O'reilly and has worked as a developer and instructor for companies like GenEd Systems, Crossfield Digital, CampusGuard and General Assembly. Alex ... Show more
A Data enthusiast more widely interested in Business Analytics/DW/EPM solutions with a special focus on Oracle products and solutions. Oracle ACE Director, owner of DATAlysis LLC, a consulting company in Switzerland, he has more than 15 years of ex... Show more
Michelle Frost is an AI Advocate at JetBrains. With over a decade of engineering experience, Michelle holds a Bachelor of Science in Computer Science from the University of Missouri at Kansas City, a Master of Science in Artificial Intelligence from ... Show more
Mathias is a data enthusiast with a great passion for the synergy between data analytics and cloud data platforms. As a Senior Director at Inspari he works with building up clients' data capabilities, implementing data platform technologies and a... Show more
Wolfgang Strasser, an experienced data consultant at ACP CUBIDO in Austria, specializes in leveraging the Microsoft Data Platform to drive analytics and data strategy transformations. With extensive experience in SQL Server, Azure Data Services, Powe... Show more
Joel Tosi
Co-author of 'Signals & Levers (ITRevolution, September 2026)'; Coaching for Learning' and 'Creating your Dojo' - helping organizations learn to learn, make work easier, and deliver better products.
Co-Author of 'Signals & Levers (ITRevolution, September 2026)', 'Coaching for Learning; the Art and Practice' and 'Create Your Dojo; Upskilling Your Organization for Digital Evolution,' Joel helps organizations evolve through learning. This combines... Show more
Viktor Gamov is a Principal Developer Advocate at Confluent, founded by the original creators of Apache Kafka®. With a rich background in implementing and advocating for distributed systems and cloud-native architectures, Viktor excels in open-source... Show more
Cloud enthusiast and technology lover’s. I work with Azure and other cloud, handling the nitty-gritty tech stuff (think of me as a high-flying engineer) and the creative side (designing awesome solutions). On top of that, I spend my time doing works... Show more
Julian Kusenberg is a Microsoft MVP and Senior Consultant at SoftwareOne AG and an expert in Microsoft 365 compliance, with a particular focus on Microsoft Purview. In his role, he supports organizations in implementing holistic security and governan... Show more
Meet Seema, the tech whiz at Autodesk. She's not just about fixing things – she loves sharing what she knows! Whether speaking at cool events like GitLab Commit, and GitHub Universe or breaking down tech on her YouTube channel, Seema makes the compli... Show more
Cat is a Staff Product Manager at Syntasso, where she works at the intersection of developer experience, infrastructure strategy, and product design. With a background in enterprise platform tooling and developer productivity, she focuses on helping ... Show more
Bree is a frontend Software Engineer turned Developer Advocate at HubSpot. She has a passion for coding and making technology more accessible to everyone. Bree creates technical content to help developers create and build autonomously. When she isn't... Show more
Edoardo is a Developer Relations Engineer. He has a strong software developer and team leader background, working on various projects and platforms. He is passionate about creating and sharing content that educates and inspires other developers, such... Show more
Joy Apple is a Microsoft MVP and Director of Partner and Customer Success at Orchestry. As a seasoned information technologist, Joy strives to ensure technology is implemented with a purpose-driven, “human-first” approach. Teaching is one of her pa... Show more
Andrii has a total of 17 years of software engineering experience and has been very passionate about Go for the past 6 years. Over the past 5 years at Delivery Hero, he has adeptly harnessed Golang, excelling in constructing high-load applications, l... Show more
Michael Greth is a passionate tech enthusiast and long-standing contributor to the digital workplace and AI community. As a freelance consultant, speaker, and trainer, he focuses on Microsoft Copilot, AI, Microsoft 365, enterprise video with Microsof... Show more
Uwe Ricken has been working with IT systems since the early 1990s, with a deep focus on Microsoft SQL Server starting from his work on Membership Software for the American Chamber of Commerce in Germany - later rolled out across five European countri... Show more
Paul (AKA @mrpaulandrew) is the Co-Founder & CTO of Cloud Formations, a specialist data consultancy based in the UK. With nearly 20 years’ experience designing and delivering Microsoft data architectures, Paul leads a passionate team of engineers, su... Show more
Cecilia Wirén senior developer at Active Solution with over two decades of experience in the world of Microsoft development. Her accomplishments have been recognized multiple times with the Microsoft MVP award. Cecilia is often invited to share her i... Show more
Sam Debruyn is a Microsoft Data Platform MVP and Data Platform Architect passionate about modern data platforms such as Microsoft Fabric. In his day-to-day, he designs and implements data platforms that support customers in harvesting the full potent... Show more
John is an experienced data platform professional having spent over fifteen years working with Microsoft SQL Server, Azure, and AWS technologies. Working closely with clients to solve their data platform problems with innovative solutions with a focu... Show more
Heini is a math teacher turned Azure expert. With her background in mathematics and teaching, she has a great passion for problem solving, simplifying complex things and a unique approach to architectures. She is a Co-founder at Bruvo and a Data Pla... Show more
I'm a Cloud Solution Architect Modern Work and deals mainly (but not only ...) with SharePoint, a product that has been with him for 15 years and has experienced the birth and growth of all the latest versions. However, collaboration is not just Shar... Show more
I'm making music from the data! Power BI and Microsoft Fabric addict, Microsoft Data Platform MVP, Pluralsight Author, O'Reilly Instructor, blogger, speaker...Interested in everything related to data - always eager to extract valuable info from raw d... Show more
Antonio Ojea is a Software Engineer at Google, where he works on Kubernetes. He is one of the top contributors of the Kubernetes project, Tech Lead in Kubernetes SIG Network & Testing with a proven track record in leading technical initiatives to enh... Show more
Please note that Sessionize is not responsible for the accuracy or validity of the data provided by speakers.
Most Active Speakers 2025
Every year, we put together a list of the most active speakers. This list features the top 3% of speakers who have participated in events using Sessionize during the 2025.
The 3% is calculated from the pool of all speakers that have at least one accepted session in year 2025. We don't include inactive speakers or speakers that had no accepted sessions during the year. There are around 39,000 unique accepted speakers this year, the 3% is 1163. Not all of them have their speaker profiles set as public, and we respect that, so the list doesn't show all of them.
The calculation is based on the number of accepted events, that's the main criteria, but to get more refined results we also look at things like multiple sessions per event, sharing a session with a co-speaker and how big the event is. Number of submissions and declined sessions don't affect the list.
Please note that the count of events and sessions in this list does not represent the number of events and sessions from the year 2025. Instead, it shows the number of events and sessions featured on the speaker's public speaker profile; these numbers have nothing to do with the award itself.