Most Active Speakers 2025
Sessionize proudly presents the list of the most active speakers in the year 2025!
Dr Nestori Syynimaa is a Principal Identity Security Researcher at Microsoft Threat Intelligence Center He has over a decade of experience with the security of Microsoft cloud services and is known as the creator of the AADInternals toolkit. Before j... Show more
Cloud Architect, Platform Evangelist, AI Enthusiast, Father, and Husband. 13+ years of experience in the IT Industry across Samsung, PwC, EY, and Accenture, last 5 years of which has been primarily focused on building, maintaining and selling plat... Show more
Martin Catherall is a Data Architect working on Microsoft Data Platform technologies. He is currently based in Brisbane, Australia. Martin’s career has expanded from the world of SQL Server Administration and T-SQL development to encompass data en... Show more
Roman is a cybersecurity expert, engineer, and leader with over 17 years of hands-on experience securing complex systems and products at scale. Currently Principal Architect at Red Hat, he leads open-source security strategy, upstream collaboration, ... Show more
Global AI & Data Science Lead at Avolta. Master's degree in Computer Science at Universidad of Alicante (2005-2011). Microsoft AI MVP Show more
Alex is CTO in KMMX,an IT Training and Certification company located at Mexico City . Web & Mobile Developer with more than 20 years of experience. Recently doing DevOps functions. Technical Writer and International Speaker. Proudly member o... Show more
Tim is a freelance consultant with more than 20 years of experience in modern workplace and mobility solutions. A Microsoft MVP for 12 consecutive years, Tim specializes in endpoint management, security, and Microsoft Intune. He works with organizati... Show more
Vukasin is a digital nomad and Microsoft Azure MVP, currently working as a Senior Cloud Architect, with a specialization in Microsoft Azure and Hyper-Converged Infrastructures. Father, rescue scuba diver, and public speaker. Show more
Rick Ossendrijver is a Software Engineer at Picnic, a fast-growing online supermarket. Rick is a committer and enthusiast of the Error Prone project. Moreover, he is passionate about improving software quality through static analysis and automation, ... Show more
My name is Axel and I'm from Argentina, where I live with my dog child Sansa. Love playing with her (and any dog), go for a walk and grab a coffee or have mate (argentinian drink :D ) in some park and read. Also series, films, friends, tech. Oh almo... Show more
Spyros has 20 years of experience in the security world. Since the beginning of his career he has been an avid supporter and contributor of open source software and an OWASP volunteer. Currently he is interested in the harmonization of security tools... Show more
Sujithkumar P Sukumaran
CGI, Director Consulting Expert (Bridging Technology and Business: Your Architect for Next-Gen CRM Solutions)
Experienced Architect with a demonstrated history of working in the management consulting industry. Skilled in Requirements Analysis, Designing, Customer Relationship, Leadership with strong consulting skills Summary of Qualifications & Experience a... Show more
Lizzie serves developers in the Bay Area and beyond on Cloudflare's developer relations team and holds a Bachelor's degree in Computer Science from Bryn Mawr. She likes JavaScript, Python, and working with AI. When not organizing or attending hackath... Show more
Michael Seidl
IT Process Automation Expert | define, automate, and delegate your IT Processes with Microsoft Automation and au2mator | ITSM Mastermind | Microsoft MVP
Michael is an IT Process automation Expert with Customers all around the Globe, a Cloud and Datacenter MVP since 2015, and an au2mation enthusiast. Show more
I have spent the last 30 years spent working in the technology industry, and have over 20 years experience working with open source. I help customers solve business problems with open source technologies and cloud. I am a Developer Advocate for open ... Show more
Driven by the mission to make people's lives easier, Tim Damen actively advocates for and builds a web that serves everyone equally. Tim is a frontend developer, web accessibility specialist, and engineering manager from Amsterdam, the Netherlands 🇳... Show more
Creative developer Jorrik bridges the gap between design and functionality. With 8+ years in front-end, he's now exploring AI's potential. At Sopra Steria, he builds innovative web solutions and shares his tech journey through public speaking. Show more
Es especialista en ciberseguridad ofensiva, con enfoque en operaciones de red teaming, purple teaming, pruebas de penetración, campañas avanzadas de phishing y ataques dirigidos a entornos de Active Directory. Actualmente forma parte del un equipo re... Show more
Based in Zürich, Switzerland I have been working as a BI consultant using the Microsoft Data platfrom since 10 years. Covering all aspects of the data journey from data engineering to data visualization. A big passion lately has been the new world... Show more
Brenna Buuck is the subject matter expert at MinIO for databases and data lakehouses. A data engineer turned developer evangelist, she is passionate about coding, data, and learning. She endeavors to inspire and educate other developers about the lat... Show more
Jenn Claridge is a Microsoft MVP and trusted advisor in Business Central, specializing in manufacturing and service-focused organizations. She helps small and mid-sized businesses translate ERP strategy into practical, real-world execution. With d... Show more
Rajesh worked as data architect, data modeler and data analyst at global firms working on technical projects that generated huge revenue. He holds master's in computer science and bachelor's in electrical and electronics engineering. Show more
Eric “waldo” Wauters Eric is one of the founding partners of iFacto Business Solutions and Dynex bv. With his 21 years of technical expertise, he is an everyday inspiration to its development teams. As development manager he continually act... Show more
Wade is a CPA who brings 20 years of financial expertise and business management experience to U.S. Transactions Corp. He was previously with Ernst & Young in San Francisco and later PriceWaterhouseCoopers in Stuttgart, Germany where he was senior ... Show more
Marco is a business intelligence consultant and mentor. He wrote several books about Power BI, Analysis Service, and Power Pivot. He also regularly write articles and white papers that are available on sqlbi.com. Marco is a Microsoft MVP and an SSAS ... Show more
Kamal Shree
Senior Developer Advocate @Microsoft, Google Developer Expert, Youtuber(Whatsupcoders), Women Techmakers Ambassador!
Senior Developer Advocate @Microsoft, Google Developer Expert in Flutter & Dart with 14 years of experience in Web Technologies, Android, Flutter, HarmonyOS and Microsoft M365. I have worked for multinational firms in India, the Netherlands, and the ... Show more
Javier Sanchez Rivero
Senior BI Consultant en Next Digital || Microsoft MVP Data Platform || Creador de losdatoscomoherramienta.blogspot.com
Ingeniero electrónico convertido en experto en datos con más de 6 años de experiencia, Microsoft 𝗠𝗩𝗣 𝗲𝗻 𝗗𝗮𝘁𝗮 𝗣𝗹𝗮𝘁𝗳𝗼𝗿𝗺 y 𝗰𝗲𝗿𝘁𝗶𝗳𝗶𝗰𝗮𝗰𝗶𝗼𝗻𝗲𝘀 𝗱𝗲 𝗠𝗶𝗰𝗿𝗼𝘀𝗼𝗳𝘁 como Analista de Datos en Microsoft Power BI y en Microsof... Show more
Reet Kaur is a seasoned information security professional experienced in both public and private sectors. She is currently a leader of a consulting company offering CISO services. She was recently an Executive Director of IT Risk Management & Securit... Show more
Eugene Meidinger works as a BI consultant and Pluralsight author, specializing in Power BI and Azure. He has been working with data for 10 years. Show more
I've more than 18 years of experience defining and implementing software architectures by leading high-performance teams and improving best practices for software development. I help connect people with technology by bringing value to their busines... 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.