Most Active Speakers 2025
Sessionize proudly presents the list of the most active speakers in the year 2025!
Thomas "Tom" Martens is a Microsoft Data Platform MVP and Solution Architect at Munich Re. With over 25 years of experience delivering Business Intelligence, Data Warehousing, and Analytics solutions, Tom specializes in helping organizations tackle a... Show more
Kasper Borg Nissen
Principal Developer Advocate at Dash0, former Co-Chair KubeCon+CloudNativeCon EU/NA, CNCF Ambassador, Golden Kubestronaut, KCD Organizer, Meet-up organizer
Kasper is a CNCF Ambassador, former KubeCon+CloudNativeCon Co-Chair, Golden Kubestronaut, KCD Organizer, and CNCG Group Organizer. He co-founded Cloud Native Nordics to unite meetups across the region. As a Developer Advocate at Dash0, he helps make ... Show more
Jean Joseph is a seasoned consultant and senior technical trainer specializing in data engineering and artificial intelligence. With a strong background in database design, administration, and cutting-edge data technologies including machine learning... Show more
With over 20 years of experience developing software on the Microsoft stack, Roelant Dieben has a lot to share about stuff that has been obsolete for years. At Sopra Steria he is helping companies with their Azure cloud and AI challenges, he is a Mic... Show more
Leslie Welch is the Principal Architect, Data & AI at SHI with over 18 years of experience in automation, data analysis and visualization, and strengthening organizations’ knowledge of data. Leslie is a Microsoft MVP and has worked end-to-end in the ... Show more
My name is Jannik Reinhard and I'm 28 years old. I work as Head of AI and Lead at Epic Fusion Germany, a Microsoft Partner of the Year 2024 company specializing in Modern Workplace solutions and AI transformation. I am proud to be a dual Microsoft M... Show more
I'm a dual Microsoft Business Applications MVP in Customer Experience and Customer Service. An expert Microsoft Certified Dynamics 365 Solution Architect, who's led the delivery and implementation of several tailored and value-oriented solutions to ... Show more
Security consultant with a focus on Microsoft Security either on-prem or in the cloud, and a blueteamer at heart. Viktor has worked within IT for the past 10 years always within Cyber Security. Working for public sector in Sweden for years but now as... Show more
Matthijs is a Coding Architect at Xebia. With a strong focus on Azure and AI, he helps clients achieve more on Azure. Matthijs has a passion for creating good work environments, writing great code, and building amazing teams. Matthijs trained and ... Show more
Tatu Seppälä
Blogger & speaker | Microsoft MVP Security | MCT | Data Security, Insider Risk, Power Platform Security & Governance, IAM
Tech explorer & lifetime learner. Deep experience in consultancy, advisory and architectural roles in the Microsoft cloud tech space. Special focus areas include (but are not limited to) insider risk, compliance and data security. Show more
Sami Laiho is one of the world's leading professionals in the Windows OS and Security. Sami has been working with and teaching OS troubleshooting, management, and security since 1995. Sami's session was evaluated as the best session in TechEd North A... Show more
Mabrouk is a Principal Software Engineer @ Xebia Germany and a Microsoft MVP. He specializes in .NET technologies including Blazor, ASP.NET, and .NET MAUI. His expertise extends to developing powerful web applications, APIs, and robust databases. Mab... Show more
Vesa “Vesku” Nopanen is Principal Consultant for AI-Native Future Work at Sulava MEA, the leading Microsoft Copilot and AI enablement partner in the Middle East and Africa. A Microsoft MVP (AI & Microsoft 365) since 2019, Vesku helps organizations be... Show more
Richard Fichtner is the Principal Software Architect at XDEV Software GmbH, with over 20 years of experience in the software industry. He works at the intersection of business and technology and is a strong advocate for best practices in modern Java ... Show more
Markus Ehrenmueller-Jensen is the founder of Savory Data, with a career spanning project leadership, data engineering, and business intelligence architecture since 1994. He holds degrees in software engineering and business education and serves as a... Show more
Dieter is a Microsoft MVP for Azure and an experienced IT architect, certified since 2012. He focuses on designing clear, scalable enterprise architectures, with a strong emphasis on domain-driven thinking and practical cloud governance. As a TOGAF-... Show more
Sammy is a seasoned consultant with an extensive background in diverse industries and over a decade of experience. With a specialization in the Microsoft Stack, he has successfully undertaken and delivered numerous projects across sectors such as fin... Show more
Jan Ketil is an Microsoft MVP since 2016 and are working as a COO and Principal Cloud Architect at CloudWay in Norway. He has been working in the industry for Microsoft Partners and Microsoft for more than 25 years. He loves to speak about anything a... Show more
Kevin Dubois is often featured as a (keynote) speaker at conferences around the world, where he shares his passion and knowledge about developer experience, open source, cloud native development and Java. He is also an author, java Champion, and an a... Show more
Roberth is a self-proclaimed "cloud automator" and "platform creator". He primarily works on building cloud native platforms, while being an advocate for Platform Engineering and DevOps. He has been awarded the title Microsoft Azure MVP and CNCF Amba... Show more
I'm a GitHub Technical Lead, and I'm passionate about front-end technologies and everything related to the cloud, especially Microsoft Azure. I live in Zurich and actively participate in local and international community activities and events. I ... Show more
Serge Luca, also known as Doctor Flow, is a 19-time Microsoft MVP and currently a Business Applications MVP specializing in Power Automate, Power Apps, and Copilot Studio. Based in Brussels, Belgium, he works as a Power Platform Solution Architect an... Show more
Java Champion, CNCF Ambassador & TAG DevEX Co-Chair, Developer Advocate, Technical Marketing, Keynote Speaker, Published Author Show more
Louëlla Creemers is a software developer from the Netherlands focusing on .NET, C#, and modern web technologies. She is active in the developer community as a teacher, content creator, blogger, and public speaker, with a focus on making advanced or n... Show more
I'm a dual Microsoft MVP in the categories: Azure and Security. With more than eighteen years of experience in large-scale global IT environments, I specialize in Modern Endpoint Management, Enterprise Mobility and Security, and Microsoft Azure. I cu... Show more
Barbara Forbes is an Azure Architect & consultant at Zure in the Netherlands, a Microsoft Azure MVP, Microsoft Certified Trainer (MCT), and a GitHub Star. She works at the intersection of technology, strategy, education, and development. Her focus is... Show more
Stefan's passion is to practice Clean Code and test-driven development in order to build maintainable high-performance software in an ever-evolving team, supported by tools from the .NET Ecosystem. He loves to attend and speak at public developer eve... Show more
Helping organizations achieve a data-driven culture by implementing Data Analytics and Business Intelligence Solutions and increasing the solution adoption via workshops, training and Centers of Excellence. Tech Leader | Entrepreneur | Public Spea... Show more
Mihaela is an Experienced Software Architect at Systematic, Romania, and an Oracle ACE Associate for Java. Ph.D in artificial neural network algorithms, Assistant Professor at the University of Cybernetics and Informatics in Bucharest, she is a dedic... Show more
Gregorio Palamà
GDE Cloud | Senior Enterprise Architect @ adesso.it | Community Manager @ GDG Pescara
I have been working in the IT industry for over 15 years. I currently hold the role of Senior Enterprise Architect in adesso.it. I am a Google Developer Expert on GCP and a Google Cloud Innovator Champion on the topic of modern architecture. I manage... 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.