Most Active Speakers 2025
Sessionize proudly presents the list of the most active speakers in the year 2025!
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
Katerina, an MVP, MCT, and renowned public speaker, focuses on Power Platform & AI. With twenty years of experience and key certifications in PROSCI, PMI, Power Platform Solution Architect, she leads in app development, AI, and adaptive work models. ... Show more
Bob Fornal
Microsoft MVP | Senior Developer with a passion for learning, testing, mentoring, speaking and personal growth. Blessed husband and proud father of two.
Microsoft MVP and Torc Ambassador with a focus on Web Development: JavaScript, TypeScript, CSS, SVG, Angular, React, React-Native, Vue, and Ionic. I commonly speak about Cloud CI/CD, Quality Engineering, Best Practices, and Front-End Technologies. ... Show more
I am Clément SERAFIN, Global Solution Architect AI. Specialized in tenant 365 migrations during merge & acquisitions, I advised multiple companies on several areas of Microsoft 365: – Entra ID (Security, IAM) – Teams (Call center, Teams Premium, M... Show more
Usman is a Staff Developer Advocate at Grafana Labs from Nuremberg, Germany. He works with the Open Source community on the community forum, GitHub and Slack. He has over 15 years of experience in IT and in Cloud Stack where he served multiple cus... Show more
Tatu Seppälä
Blogger & speaker | Microsoft MVP Security | Insider Threat, Data Security, Agents & Power Platform Security & Governance, IAM
Lifetime learner. Deep experience in consultancy, advisory and architectural roles in the Microsoft cloud tech space. Show more
Loek Duys
Freelance Azure & .NET Architect | 9× Microsoft MVP | Driving Cloud Adoption, Optimization & Secure Platforms | International Conference Speaker
I help organizations design, build, and optimize secure, scalable Microsoft Azure platforms that deliver measurable business results. For over 20 years, I’ve guided enterprise leaders and product teams through high-stakes cloud adoption, complex mig... Show more
I help organizations strengthen security, automate processes, and streamline device management across Intune, Windows 365, and the Microsoft Security stack. My work focuses on closing real gaps, from PowerShell-driven Intune automation and third-part... Show more
I'm Mahendran Selvakumar, a Cloud Native technologist and Open Source advocate with deep experience in Kubernetes, AWS, and HashiCorp tools and Service Mesh. I'm a HashiCorp Ambassador, Linkerd Ambassador, AWS Community Builder. I organize the AWS We... Show more
My name is Marjolein Opsteegh. I'm a Microsoft Data Platform MVP and a big Power BI enthusiast living in the Netherlands, who loves to share knowledge, especially at the intersection of Power BI, UI, and UX. As a consultant, I design and build dashbo... Show more
Thomas Naunheim is a Cyber Security Architect at glueckkanja AG and a Microsoft MVP from Koblenz, Germany, specializing in cloud-native identity and security solutions in Microsoft Azure and Microsoft Entra. With a deep focus on privileged identity m... Show more
Nicklas is a Trusted Security Advisor employed at Onevinn in Sweden. His primary objective is assisting organisations in navigating Intune, ensuring they obtain an optimal and highly secure user experience. Nicklas is a dual Microsoft MVP: * Sec... Show more
Since the beginning of my IT profession, my focus has been on identity and automation. Currently i work for semperis with a strong focus on protecting your Identity Provider, both on premise and Cloud. In my previous role as a PFE at Microsoft, my... 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
Part technologist, part educator, part community organizer—Karinne Bessette operates at the intersection of enterprise security, hands-on learning, and human connection. In their role as Technical Storyteller in Veeam's Office of the CTO, they speci... Show more
Juan Vázquez is a Microsoft Certified Trainer (MCT) with 25 years of experience helping professionals and organizations adopt Microsoft technologies effectively. He is the CTO of DT Software Services, a Microsoft Partner, where he leads architecture,... Show more
Håkan Silfvernagel
Senior AI Architect | Microsoft AI MVP | Microsoft Certified Trainer | MCT Community Lead
Håkan holds a Master of Science degree in Electrical Engineering and a Master’s degree in Leadership and Organizational behavior. He has also taken courses on university level in psychology, interaction design and human-computer interaction. He has 2... Show more
Computer engineer with 15 years of experience in implementing business intelligence, engineering, and data analytics solutions. I love learning new things, pushing technology further, and collaborating on exciting projects that add value at all level... Show more
IT Leader, Instructor, and Conference Speaker with decades of experience in Microsoft solutions, currently serving as Director of Microsoft Governance and Microsoft MVP for M365 & Copilot. I'm passionate about leveraging technology to empower organiz... Show more
Yves Habersaat is a Business Applications Consultant and AI Tech Lead at Sword Group in Switzerland, specializing in building applications and solutions with Microsoft 365, Azure, Dynamics 365, and the Power Platform. With a strong passion for mod... Show more
Active in the IT industry since 2012, Leo Visser is a Subject Matter Expert for Azure and AI Foundry at OGD. He advises organizations on AI, automation, and cloud architecture, combining tools like PowerShell, Power Platform, Azure Logic Apps, and na... Show more
Rajani is a DevOps and Site Reliability Engineer (SRE) with over 4 years of experience in cloud infrastructure, automation, and platform engineering. She is a Google Developer Expert (GDE) for Google Cloud, a Docker Captain, and a Women Techmakers (W... Show more
I love to tell you a story! Whether it's about autonomous agents, boosting personal productivity, enhancing your company's efficiency, exploring the latest CRM innovations within Dynamics 365, or mastering social selling through LinkedIn, I bring ea... Show more
Brian Vermeer is a Staff Developer Advocate at Snyk and a respected authority in Java and secure software development. He is an internationally recognized Java Champion and Oracle ACE Pro, honored for his outstanding contributions to Java and open so... Show more
Baruch Sadogursky (@jbaruch) did Java before it had generics, DevOps before there was Docker, and DevRel before it had a name. He built DevRel at JFrog from a ten-person company through IPO, co-authored "Liquid Software" and "DevOps Tools for Java De... Show more
My name is Jasper Oosterveld. I am a Microsoft MVP, Data Security & Microsoft 365 Consultant working for Rubicon in the Netherlands. I’ve spent the last decade helping organizations tackle complex challenges around Microsoft 365 Governance, Adoption ... Show more
Øystein Hagen Blixhavn is passionate about getting stuff done, in basically all senses of the words. If it reduces wasteful effort and time, fantastic. If it improves the developer experience and increases their flow, amazing! This aspiration has ... Show more
Nikhilesh Tayal
Google Developer Expert for AI. Founder - "AI ML etc." (an educational platform for Senior IT professionals to learn AI). 70+ speaking assignments.
Nikhilesh is an entrepreneur, teacher and tech nerd He is an IIT Kharagpur alumnus. He is also a Google Developer Expert in AI and has over 15,000 followers on LinkedIn. Currently, he runs "AI ML etc." - an AI-enabled educational platform for senio... Show more
Microsoft and AI consultant, trainer and speaker. MVP Alumni in Business Applications, 12 years of experience in Power BI / Fabric. Moved to the AI-augmented side. 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.