Most Active Speakers 2025

Sessionize proudly presents the list of the most active speakers in the year 2025!

  • 1125 speakers
  • Auto-generated
Ferdi Lethen-Oellers

Ferdi Lethen-Oellers

Ferdi Lethen-Oellers is a senior consultant in the area of Microsoft 365 and helps companies increase productivity in their everyday work. He likes to focus on the most important component in the process: people. Since the pandemic, Ferdi has been an avid jogger and regularly goes to soccer. Besides sports, his family is the most important thing to him. Ferdi is an expert on the topic of Microsoft 365 and is available for questions as well as consultations. Inquiries via mail to ferdi.lethen@outlook.de.

Ferdi Lethen-Oellers is a senior consultant in the area of Microsoft 365 and helps companies increase productivity in their everyday work. He likes to focus on the most important component in the process: people. Since the pandemic, Ferdi has been an... Show more

Joel Tosi

Joel Tosi

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 a blend of systems thinking, XP, agile, lean, devops and product thinking practices all to embrace learning in the context of work.
With deep experience in architecture modernization, blending product discovery with delivery and architecture, and systems thinking, Joel helps organizations make it easier for their teams to do great work.

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

Serge Luca

Serge Luca

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 and has designed and delivered more than 18 enterprise-scale Power Platform projects.

An international and Microsoft Ignite speaker, Serge is also a frequent blogger and community contributor. He has completed multiple assignments for the Microsoft SharePoint team in Redmond, worked on projects worldwide, and served as a Subject Matter Expert for Microsoft Learning on SharePoint and Workflow Foundation.

Serge has trained over a thousand developers in SharePoint technologies and is the author of the renowned Master Class Microsoft Power Automate and Master Class Power Apps workshops. He also collaborated with the Flow team to help create the “Microsoft Power Automate in a Day” workshop.

In addition, Serge is the creator of the open-source Power Platform BPM Toolkit, available on GitHub. Earlier in his career, he worked as a researcher at the University of Namur (Belgium) and as a contractor for Microsoft (USA).

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

Daniel Rohregger

Daniel Rohregger

Daniel is a international Speaker covering topic all around Microsoft 365. With a big focus on Copilot, Adoption and Modern Workplace he loves what he does. With large to medium Enterprises from EMEA he get's experience from the real world and combines that with the passion for technology.

💼 M365 Copilot MVP
💼 AI, Hybrid Work, Teams and Modern Work-Freak
💼 Speaker and Instructor for Microsoft 365 Services
🎓 Certified ScrumMaster, Bachelor Professional for Project Organisation (CCI)

🌇 Regensburg, Germany near Munich area

Daniel is a international Speaker covering topic all around Microsoft 365. With a big focus on Copilot, Adoption and Modern Workplace he loves what he does. With large to medium Enterprises from EMEA he get's experience from the real world and combin... Show more

Antonio Ojea

Antonio Ojea

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 enhance Kubernetes networking stability and performance. Enthusiastic advocate for strong testing practices within open-source communities.

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

YK Sugi

YK Sugi

Founder of CS Dojo, a programming education YouTube channel with 1.9M+ subscribers. Also the creator of an open-source coding assistant with ~1200 stars on GitHub, and a Claude Code tips repo with 9000+ stars.

Founder of CS Dojo, a programming education YouTube channel with 1.9M+ subscribers. Also the creator of an open-source coding assistant with ~1200 stars on GitHub, and a Claude Code tips repo with 9000+ stars. Show more

Peter Shore

Peter Shore

Peter is a seasoned IT professional with over 25 years experience. He took the accidentally intentional DBA plunge in 2013 and has discovered that he loves to find the stories the data has to tell. Peter is comfortable working with physical, virtual, and cloud instances where he tries to apply best practices to attain performance improvements. He is also adept at bridging the gap between technical and business language in order to bring technology solutions to business needs.

Peter is a seasoned IT professional with over 25 years experience. He took the accidentally intentional DBA plunge in 2013 and has discovered that he loves to find the stories the data has to tell. Peter is comfortable working with physical, virtua... Show more

Olivier Van Steenlandt

Olivier Van Steenlandt

Olivier Van Steenlandt is a Business Intelligence Professional who spent most of his early career assisting retail companies to get more value of their data using the Microsoft BI Stack (SSIS, SSAS, SSRS, Power BI).

As his first experience in the field (in Business Intelligence), Olivier worked as a Big Data Analyst using tools such as Hadoop and Spark.

In 2015 the focus changed to traditional data warehousing & reporting using SSIS, SSRS & MicroStrategy. A bit later, around June 2019, the opportunity arose to fill the position of BI Teamlead. In this function he was able to set up a hybrid BI Team (team members in Belgium and Belarus).

Early 2020, Olivier joined the dataMinds crew as a core member, assisting to organise several events.

Around April 2021, Olivier started a new position as BI Teamlead in another Retail Company to support business growth. Besides the challenge to help the BI Team grow and deliver projects on time, he started to use SSAS & Power BI.

In April 2025, Olivier stepped away from internal positions and became an independent consultant.

When Olivier is not working there is a high chance that you find him on a football field, studying (BI Related), playing music (Saxophone / Piano) or cooking.

Olivier Van Steenlandt is a Business Intelligence Professional who spent most of his early career assisting retail companies to get more value of their data using the Microsoft BI Stack (SSIS, SSAS, SSRS, Power BI). As his first experience in the ... Show more

Rodrigue Yengo

Rodrigue Yengo

I'm a passionate cloud architect specializing in Azure (DevOps, Identity, Integration, Storage, Serverless, Microservices), Office 365 (Exchange, SharePoint, Teams), Dynamics 365 CE and ERP, and Data Management. With over 15 years of experience, I design complex architectures, drive major projects, and support transformation initiatives. Enthusiastic about architecture, governance, Zero Trust security, and business processes, I love sharing knowledge and contributing to innovative solutions across international environments.

I'm a passionate cloud architect specializing in Azure (DevOps, Identity, Integration, Storage, Serverless, Microservices), Office 365 (Exchange, SharePoint, Teams), Dynamics 365 CE and ERP, and Data Management. With over 15 years of experience, I de... Show more

Claire Edgson

Claire Edgson

Microsoft Fast Track Recognized Architect. I have 30+ years experience in Data Analytics, Infrastructure and Integration Architecture. 20+ years of Microsoft Business Applications and Azure, including SharePoint, Microsoft 365, Dynamics 365CE, FO & HR. Business experience as IT Manager and IT Director allows Claire to work closely with customer IT teams and understand their pain through transformation programs.
9 years experience with Power platform architecture and design, with Dataverse , SharePoint, SQL , Azure cognitive services, Azure Blob and Azure datalakes. I am passionate about Learning new things and sharing that knowledge with others as well as being incredibly passionate about the outcomes we give our customers.
My prime focus is on Security, Governance and Integrations with the PowerPlatform.

Microsoft Fast Track Recognized Architect. I have 30+ years experience in Data Analytics, Infrastructure and Integration Architecture. 20+ years of Microsoft Business Applications and Azure, including SharePoint, Microsoft 365, Dynamics 365CE, FO ... Show more

Kimasia Ayers

Kimasia Ayers

Kimasia Ayers is a sociologist, systems thinker, consultant, and strategist whose work lives at the intersection of business analysis, human behavior, design, and organizational change. She is widely recognized for helping organizations navigate complexity with clarity, guiding insight from discovery through decision and into action in ways that hold under real-world conditions.

Rooted in social innovation, Kimasia brings a rare blend of creative human-centered insight and rigorous structure to change enablement. Her work centers on preserving meaning under pressure, designing for adoption, and strengthening how understanding moves across strategy, technology, governance, and execution. She is known for developing original frameworks that help teams communicate complexity, align across disciplines, and sustain transformation within the complexity of society.

Through her consulting practice, Kimasia partners with organizations, institutions, and leaders to support thoughtful, resilient change. She also leads a social enterprise dedicated to translating complex social and organizational dynamics into accessible, actionable understanding that empowers individuals, teams, and communities. Grounded in empathy, systems awareness, and deep analytical discipline, Kimasia’s work reflects a core belief that meaningful change emerges when human insight and structured analysis work together.

Kimasia Ayers is a sociologist, systems thinker, consultant, and strategist whose work lives at the intersection of business analysis, human behavior, design, and organizational change. She is widely recognized for helping organizations navigate comp... Show more

Luis Beltran

Luis Beltran

I'm a Microsoft MVP in Azure, Artificial Intelligence, and Developer Technologies. I am currently pursuing a PhD in Engineering Informatics at Tomas Bata University in Zlin, Czech Republic.

I've been developing .NET apps for +10 years. I find C# a really powerful language which allow us to create different kinds of software. I focus on mobile apps (Xamarin/.NET MAUI), cloud computing (Azure) and AI.

I enjoy sharing my knowledge with others.

I'm a Microsoft MVP in Azure, Artificial Intelligence, and Developer Technologies. I am currently pursuing a PhD in Engineering Informatics at Tomas Bata University in Zlin, Czech Republic. I've been developing .NET apps for +10 years. I find C# a... Show more

Luc Labelle

Luc Labelle

Luc brings over two decades of IT expertise to the table, with a remarkable 15-year tenure as a consultant. Throughout his career, he has spearheaded numerous projects centered around Office 365, SharePoint, Power BI, and Power Platform, accumulating a wealth of experience in diverse business environments. This extensive exposure has sculpted Luc into a highly skilled professional with a deep understanding of various business models.

Driven by his fervor for technology, Luc established his own consulting firm, Kabesa, in 2014. Actively immersed in the Montreal community, he is a frequent contributor to events, wearing multiple hats as both an organizer and a speaker. As a distinguished Business Applications MVP, Luc leads the Montreal Power Platform User Group and is sought after globally for his expertise, having delivered numerous sessions worldwide, each showcasing the cutting-edge innovations of Microsoft technology.

Luc brings over two decades of IT expertise to the table, with a remarkable 15-year tenure as a consultant. Throughout his career, he has spearheaded numerous projects centered around Office 365, SharePoint, Power BI, and Power Platform, accumulating... Show more

Michael Greth

Michael Greth

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 Microsoft Stream/Clipchamp and naturally, SharePoint, which has been at the heart of his work for decades.

Michael has been producing video content and live events for many years, sharing insights across YouTube and other platforms. A true podcast pioneer, he launched sharepointpodcast.de back in 2005 and now hosts yourcopilot.de, diving into the latest trends in Microsoft 365 Copilot, AI and productivity.

In recognition of his deep expertise and tireless community engagement, Michael has been awarded the Microsoft MVP title ffor an impressive 26 consecutive years currently for or Microsoft Copilot & Clipchamp.

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

Marco Pollacci

Marco Pollacci

Hi! I’m a frontend developer with a long-standing love affair with JavaScript, CSS, and the magic they bring to the web.
My journey started back in the jQuery era, when Chrome was just a baby—and I’ve been hooked ever since! I thrive on building snappy, interactive experiences and exploring the endless possibilities of the modern web.

Hi! I’m a frontend developer with a long-standing love affair with JavaScript, CSS, and the magic they bring to the web. My journey started back in the jQuery era, when Chrome was just a baby—and I’ve been hooked ever since! I thrive on building sna... Show more

John Martin

John Martin

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 focus on simplicity, maintainability, and automation.

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

Cat Morris

Cat Morris

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 teams treat platforms as products that deliver measurable value. Cat brings experience from both engineering and product management roles in fast-scaling tech environments.

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

Osita Ifezue

Osita Ifezue

Osita Ifezue is a researcher, international keynote speaker, and storytelling strategist. He is the founder of Njiko Storytelling, with over 25 years of experience training individuals and developing storytelling strategies. He has created the Storyboard Backcasting and Origin Story-Loop Strategic Frameworks, strategic storytelling tools designed to enhance learning in the storytelling process. Beyond entrepreneurship, Osita founded Entergrate, an NGO in Finland that focuses on social inclusion, and he hosts the podcast Think About It! With Osita Ifezue.

Osita Ifezue is a researcher, international keynote speaker, and storytelling strategist. He is the founder of Njiko Storytelling, with over 25 years of experience training individuals and developing storytelling strategies. He has created the Storyb... Show more

Anders Norås

Anders Norås

Anders Norås started out in arts and design, but for the last 25 years he has been creating magic with code instead of paint. Blending creativity with technical skill, he brings a perspective on technology that is as much about people as it is about software.

He has given more than 100 talks at conferences around the world. His presentations are not just lectures, they are experiences. With a sharp delivery and high energy, Anders turns even dry technical material into something lively, memorable and often funny.

Whether you are into computer science, design, media or anything else, Anders offers insights that will make you think and probably make you laugh. He does not just talk about technology. He brings it to life.

Anders Norås started out in arts and design, but for the last 25 years he has been creating magic with code instead of paint. Blending creativity with technical skill, he brings a perspective on technology that is as much about people as it is about ... Show more

Mario-Leander Reimer

Mario-Leander Reimer

Passionate software developer and architect. Proud father. #CloudNativeNerd. Leander is the CTO at QAware. He’s continuously looking for innovations in software engineering and ways to combine and apply state-of-the-art technology in real-world projects. As a speaker at national and international conferences he shares his tech experiences and he teaches cloud computing and software quality assurance as a part-time lecturer.

Passionate software developer and architect. Proud father. #CloudNativeNerd. Leander is the CTO at QAware. He’s continuously looking for innovations in software engineering and ways to combine and apply state-of-the-art technology in real-world proje... Show more

Carly Richmond

Carly Richmond

Carly is a Senior Manager in Developer Advocacy at Elastic, based in London, UK. Before joining Elastic in 2022, she spent over 10 years working as a technologist at a large investment bank, specialising in front-end web development and agility. She is a UI developer, who occasionally dabbles in writing backend services, a speaker and a regular blogger.

She enjoys cooking, photography, drinking tea, and chasing after her young son in her spare time.

Carly is a Senior Manager in Developer Advocacy at Elastic, based in London, UK. Before joining Elastic in 2022, she spent over 10 years working as a technologist at a large investment bank, specialising in front-end web development and agility. She ... Show more

Javiera Laso

Javiera Laso

I’m a Lead software engineer and architect with a background in biotechnology. I specialize in modernizing legacy systems, transforming them into scalable, efficient, and maintainable solutions. I focus on applying Domain-Driven Design (DDD) principles to create software that not only meets technical requirements but also aligns with business goals.

I have experience designing modular, cloud-ready architectures and using techniques like microservices and event-driven design to solve complex challenges. I’m passionate about continuous learning and improvement, and I enjoy mentoring teams and promoting best practices in software development. My approach combines deep technical knowledge with a practical understanding of business objectives, ensuring that the solutions I deliver are both effective and future-ready.

I’m a Lead software engineer and architect with a background in biotechnology. I specialize in modernizing legacy systems, transforming them into scalable, efficient, and maintainable solutions. I focus on applying Domain-Driven Design (DDD) principl... Show more

Anders Green

Anders Green

I am an a Microsoft MVP and workplace architect who specializes in Intune and modern workplace solutions for medium to large enterprises. Passionate about learning and sharing knowledge, Speaks at conferences around the world, aiming to deliver sessions that inspire and encourage meaningful discussions. Outside of work, rocks out to the favorite bands and crushes functional fitness challenges—because who says IT pros can’t be hardcore in every sense?

I am an a Microsoft MVP and workplace architect who specializes in Intune and modern workplace solutions for medium to large enterprises. Passionate about learning and sharing knowledge, Speaks at conferences around the world, aiming to deliver sessi... Show more

Mete Atamel

Mete Atamel

I’m a Software Engineer and a Developer Advocate at Google in London. I build tools, demos, tutorials, and give talks to educate and help developers to be successful on Google Cloud.

I’m a Software Engineer and a Developer Advocate at Google in London. I build tools, demos, tutorials, and give talks to educate and help developers to be successful on Google Cloud. Show more

Ram Iyengar

Ram Iyengar

Ram Iyengar is an engineer by practice and an educator at heart. He was (cf) pushed into technology evangelism along his journey as a developer and hasn’t looked back since! He enjoys helping engineering teams around the world discover new and creative ways to work. He is a proponent of community-first product development.

Ram Iyengar is an engineer by practice and an educator at heart. He was (cf) pushed into technology evangelism along his journey as a developer and hasn’t looked back since! He enjoys helping engineering teams around the world discover new and creati... Show more

Michael Coté

Michael Coté

Michael Coté studies how large organizations improve how they build software to run and grow their business. His books Changing Mindsets, Monolithic Transformation, and The Business Bottleneck cover these topics. He’s been an industry analyst at RedMonk and 451 Research, done corporate strategy and M&A, and was a programmer. He also co-hosts several podcasts, including Software Defined Talk. His daily-ish newsletter is at newsletter.cote.io.

Michael Coté studies how large organizations improve how they build software to run and grow their business. His books Changing Mindsets, Monolithic Transformation, and The Business Bottleneck cover these topics. He’s been an industry analyst at RedM... Show more

Michel Murabito

Michel Murabito

I'm Michel Murabito, Mich to my friends! Born in 1986 in Turin with Sicilian roots, I now live in Milan. My journey in software began at 12, coding for fun. At 18, I started my first job as a software developer and have continuously sought new challenges to grow and learn. Today,

I'm a Tech Evangelist @Fractal Cloud and a Cloud Native Computing Foundation (CNCF) Ambassador, sharing my passion for cloud native technologies with a community of curious minds. I'm also an organizer of the Cloud Native Days Italy (formerly KCD Italy) and KCD San Francisco Bay Area, fostering collaboration and innovation within the cloud native ecosystem.

I'm Michel Murabito, Mich to my friends! Born in 1986 in Turin with Sicilian roots, I now live in Milan. My journey in software began at 12, coding for fun. At 18, I started my first job as a software developer and have continuously sought new challe... Show more

Borja Piris de Castro

Borja Piris de Castro

Como me gusta a mi decirlo, soy la "mascota" que se dedica al desarrollo, con una experiencia de más de 15 años en c#, con una pasión con todo lo que tenga ver con la tecnología, otorgándome competencias transversales en seguridad, sistemas, arquitectura e IA.

Apasionado de dos maravillosos monstruos a los que llamo hijos y que me hacen cada día la vida más "sencilla" pero muy bonita...​

Mi vida laboral se puede resumir como fundador y empresario con más de 15 años de experiencia de varias empresa, docente en el master de MCSD y en este relax de vida decidí unirme a Encamina gracias a unos amigos buscando disfrutar del camino.​

En los tiempos que me dejan estar entre pantallas, ratones y teclados hago las veces de Principal Tech Lead creando metodología, método, soluciones reusables e innovando en Encamina​

Comencé en comunidad a los 14 años, en los antiguos servidores públicos y privados del IRC, programando en ensamblador para verificar la robustez de los sistemas de entonces, asistiendo a eventos cuando eran de ámbito privado y con invitación, los cuales normalmente se indicaban en que ciudad se realizabas y la ubicación se comunicaba en las últimas horas... Otros tiempos...

Así que como os podéis imaginar me encanta compartir y crear comunidad:​

- Staff de Tech Rider.​

- Ponentes en múltiples conferencias.

Como me gusta a mi decirlo, soy la "mascota" que se dedica al desarrollo, con una experiencia de más de 15 años en c#, con una pasión con todo lo que tenga ver con la tecnología, otorgándome competencias transversales en seguridad, sistemas, arquitec... Show more

Tomasz Kostyrka

Tomasz Kostyrka

Data Platform Architect with ten years of experience in various positions related to the Data field.

Proficient with the Microsoft technology stack - started his journey with SQL Server and the SSIS/AS/RS suite, currently primarily focused on Azure Cloud, Snowflake, and Databricks platforms. Highly enthusiastic about all kinds of automation and implementing the DevOps/DataOps practices in projects.

Privately, a husband and father of two, suffering from chronic lack of time and sleep deprivation.

Data Platform Architect with ten years of experience in various positions related to the Data field. Proficient with the Microsoft technology stack - started his journey with SQL Server and the SSIS/AS/RS suite, currently primarily focused on Azur... Show more

Lizzie Siegle

Lizzie Siegle

Lizzie serves developers in the Bay Area and beyond on Entire'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 hackathons and meetups, she enjoys tennis, ping pong, and all things Disney.

Lizzie serves developers in the Bay Area and beyond on Entire'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 hackathons ... 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.