Most Active Speakers 2025

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

  • 1125 speakers
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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

Jérôme Urvoas

Jérôme Urvoas

Jérôme is a professional coach, agile coach, facilitator and trainer.
For 19 years, he has been one of the pioneers who have develop an agile culture within Lectra teams. He is now in charge of a team of internal coaches that he created and who support his company in its many changes.
Passionate about human dynamics, he has developed over the years an expertise in the fields of agility, change management and the management of teams and organizations.
Active member of the Agile community and of the European Mentoring and Coaching Council France, he likes to share his experience and his convictions through conferences and training.

Jérôme is a professional coach, agile coach, facilitator and trainer. For 19 years, he has been one of the pioneers who have develop an agile culture within Lectra teams. He is now in charge of a team of internal coaches that he created and who supp... Show more

Raphael Koellner

Raphael Koellner

RAPHAEL KÖLLNER
Compliance Manager

Raphael Koellner combining the law and the information technology in particular the cloud computing. He worked for universities, Microsoft Germany (DX) and Microsoft Partner as consultant.

As CEO for KöllnService GmbH he works for huge international companies to migrate and implementate cloud solutions on a technical and a contract/law way.

Since 2019 Raphael Köllner is Microsoft Regional Director. He is the community guy, MVP for Office Server & Services, Windows 10 Insider MVP, MCT, Microsoft Student Partner Evangelist and become an attorney in Europe. He is the lead of the Office 365 Usergroup Germany, the Office 365 DACH, Leader of the Office 365 conference Germany, the SharePoint Saturday Cologne and one of 30 Windows 10 Top Insiders. Moreover he is member of the TEAMS Elite Team and the organizer of the TeamsCommunityDay. In this connection he leads the biggest Windows 10 Insider Community in Germany.

MVP: https://mvp.microsoft.com/en-us/mvp/Raphael%20%20Koellner-5000185

Microsoft Regional Director: https://rd.microsoft.com/en-us/raphael-koellner

RAPHAEL KÖLLNER Compliance Manager Raphael Koellner combining the law and the information technology in particular the cloud computing. He worked for universities, Microsoft Germany (DX) and Microsoft Partner as consultant. As CEO for KöllnSe... Show more

Oktay Sari

Oktay Sari

“My name is Oktay Sari and I live in Hoofddorp, the Netherlands. I am happily married with 2 children and our dog Lucy. I like to read a good book, have a nice BBQ and enjoy a delicious craft beer with friends and family. The little things in life matter the most to me”

Oktay has been working as an IT specialist since 1997 and has fulfilled various roles over the years.. For the past 9+ years, he has honed his skills in Endpoint management, Microsoft Intune and all things Security. In 2022 he received the Microsoft Most Valuable Professional (MVP) award in the Security (Intune) category for his community contributions and thought leadership.

With the growing prevalence of macOS in corporate settings, his current focus is on leveraging Microsoft Intune's capabilities to ensure robust and efficient management of macOS devices.

“My name is Oktay Sari and I live in Hoofddorp, the Netherlands. I am happily married with 2 children and our dog Lucy. I like to read a good book, have a nice BBQ and enjoy a delicious craft beer with friends and family. The little things in life ma... Show more

Sam Debruyn

Sam Debruyn

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 potential of their data. Sam has over 10 years of experience with Microsoft Azure and often blogs about his adventures in data. He contributes to the data community through blog posts, open-source projects, and speaking engagements at data meetups and conferences.

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

Kristyna Ferris

Kristyna Ferris

Kristyna Ferris is a solution architect at P3 Adaptive. Her experience includes implementing and managing enterprise-level Power BI instance, training teams on reporting best practices, and building templates for scalable analytics. Passionate about participating and growing the data community, she enjoys co-writing on Data on Wheels (dataonwheels.com) and speaking at various events. She also a co-organizer for Lexington Data Technology Group.

Kristyna Ferris is a solution architect at P3 Adaptive. Her experience includes implementing and managing enterprise-level Power BI instance, training teams on reporting best practices, and building templates for scalable analytics. Passionate about ... Show more

Jimmy Bogard

Jimmy Bogard

Jimmy is the creator and maintainer of the popular OSS libraries AutoMapper and MediatR, and the originator of Vertical Slice Architecture. Jimmy is an independent software consultant based in Austin, TX. Jimmy has received the "Microsoft Most Valuable Professional" (MVP) award every year since 2009.

Jimmy is the creator and maintainer of the popular OSS libraries AutoMapper and MediatR, and the originator of Vertical Slice Architecture. Jimmy is an independent software consultant based in Austin, TX. Jimmy has received the "Microsoft Most Valuab... Show more

Brian McKeiver

Brian McKeiver

Brian McKeiver is Co-Owner at BizStream, digital agency in Allendale, MI. At BizStream he is a solution architect, visionary, dual Microsoft Azure MVP (Azure AI and Azure PaaS), Kentico MVP, and Kontent.ai MVP. He has over 24 years of experience leading his agency of more than 40 employees, about a hundred clients spread out across North America, and one heck of an interesting story of how it all started from a two-person team. In addition to his expertise in web development, cloud, integration, and digital marketing, Brian is active with the tech community via his blog at Mcbeev.com.

Brian McKeiver is Co-Owner at BizStream, digital agency in Allendale, MI. At BizStream he is a solution architect, visionary, dual Microsoft Azure MVP (Azure AI and Azure PaaS), Kentico MVP, and Kontent.ai MVP. He has over 24 years of experience lead... Show more

Régis Schneider

Régis Schneider

Je suis marié, avec 2 enfants (16 & 17 ans). J'apprécie particulièrement les voyages éloignés, mais aussi ceux au bout de la rue. Tant d'opportunités de rencontrer et d'apprendre !
Le mot que j'apprécie le moins : "Normal".
Un mot que je n'apprécie pas trop : "Bienveillance". Un principe que j'apprécie beaucoup : "Bienveillance".
Sinon, tombé dans Agile en 2009, je ne veux maintenant plus m'en sortir, que ce soit à la maison ou au boulot. Je tente de développer depuis un positionnement de facilitateur, de produit et d’équipe.

Je suis marié, avec 2 enfants (16 & 17 ans). J'apprécie particulièrement les voyages éloignés, mais aussi ceux au bout de la rue. Tant d'opportunités de rencontrer et d'apprendre ! Le mot que j'apprécie le moins : "Normal". Un mot que je n'apprécie... Show more

Jean-Philippe Lesage

Jean-Philippe Lesage

Je suis CTO pour Devensys Cybersecurity et je travaille principalement sur les solutions de sécurité de Microsoft. Je suis CISSP, MVP SIEM & XDR et MCT. J'ai aussi passé 25 ans chez Microsoft.

Je suis CTO pour Devensys Cybersecurity et je travaille principalement sur les solutions de sécurité de Microsoft. Je suis CISSP, MVP SIEM & XDR et MCT. J'ai aussi passé 25 ans chez Microsoft. Show more

Brian Gorman

Brian Gorman

Brian is a Microsoft Azure MVP, speaker, author, trainer, and .NET developer with deep expertise across cloud and application development. He holds MCSA: Web App Certification, MCSD: App Builder, and thirteen Azure and GitHub certifications, including Developer, Administrator, DevOps Engineer, Solutions Architect, Data Administrator, Security Engineer, AI Engineer, and Cosmos DB — along with multiple Fundamentals certifications. Since 2019, he has also been a Microsoft Certified Trainer (MCT).

Brian earned a Master of Science in Computer Information Systems and a Bachelor of Science in Computer Science. Along with 25 years of development experience, he brings over 15 years of experience teaching computer science, SQL databases, object-oriented programming (C#, VB.NET, Java), and Microsoft Office in online university settings and professional training environments.

As an educator and creator, Brian has developed numerous online training courses available across multiple platforms and has authored several books with APress, including Practical Entity Framework Core 10 (with two earlier editions) and Developing Solutions for Microsoft Azure Certification Companion: Hands-on Preparation and Practice for Exam AZ-204.

Brian is a Microsoft Azure MVP, speaker, author, trainer, and .NET developer with deep expertise across cloud and application development. He holds MCSA: Web App Certification, MCSD: App Builder, and thirteen Azure and GitHub certifications, includin... Show more

James Reeves

James Reeves

Data enthusiast on a mission to make cost effective data platforms accessible to all while navigating the whims of an ADHD-powered mind – it's a bit like juggling flaming torches while riding a unicycle, but he makes it work!

Data enthusiast on a mission to make cost effective data platforms accessible to all while navigating the whims of an ADHD-powered mind – it's a bit like juggling flaming torches while riding a unicycle, but he makes it work! Show more

Roberto Navarro

Roberto Navarro

Soy Roberto Navarro, Ingeniero Informático de profesión y por suerte de vocación y MVP en IA, llevo cerca de 20 años trabajando en el sector, y durante los últimos 7-8 dedicándome a tareas relacionadas con el BigData y la IA en Azure, aunque siempre me pico el mundillo este de contar cosas, de ayudar a la gente a meterse es este mundo hyper-loco, así que hace como unos 3 años me metí más de lleno en la “comunidad”, realizando charlas en diversos eventos de Azure, como el GlobalAIBootcamp, NetCoreConf, GlobalAzure, etc. escribiendo algún que otro post, mi propio canal de Youtube, etc. y aquí estoy ahora, como Evangelist en donde parte de mi trabajo es precisamente este, el de ayudar a la gente y las empresas a entender este mundo tan loco de los datos, la IA, etc.

Soy Roberto Navarro, Ingeniero Informático de profesión y por suerte de vocación y MVP en IA, llevo cerca de 20 años trabajando en el sector, y durante los últimos 7-8 dedicándome a tareas relacionadas con el BigData y la IA en Azure, aunque siempre ... Show more

Rudy Ooms

Rudy Ooms

Rudy Ooms works as a Content Creator Manager at Patch My PC as of June 2024. He utilizes his extensive IT experience to create and manage content, particularly focusing on Microsoft Intune, Windows Autopilot, and Endpoint Privilege Management (EPM).

One of his hobbies (next to drinking some good beers) is debugging Intune issues. By doing so, he has learned much about all the moving pieces in Autopilot, Intune, and the associated intricacies. This knowledge is shared through the many blogs he writes on call4cloud.nl.

Rudy Ooms works as a Content Creator Manager at Patch My PC as of June 2024. He utilizes his extensive IT experience to create and manage content, particularly focusing on Microsoft Intune, Windows Autopilot, and Endpoint Privilege Management (EPM). ... Show more

Ana Maria Bisbe York

Ana Maria Bisbe York

Ana María is a data professional with over 35 years of experience in the software industry and extensive experience, both in training and in projects, in data modeling and analysis with Microsoft technology like SQL, Power BI, and Fabric for advanced analytics.
She shares knowledge and experiences and promotes the visibility of female talent in technology.
You can find her in forums and international events and congresses in Spain, many European countries, LATAM, and the United States, as a speaker, organizer, or attendee, and also online on her Twitter account (ambynet), on LinkedIn (https://www.linkedin.com/in/ambynet/) or her technical blog at AMBY.NET (https://amby.net/) which he has maintained for almost 20 years. She is a Power Platform Madrid community co-leader and leads projects and initiatives in Power Platform Spain.

Ana María is a data professional with over 35 years of experience in the software industry and extensive experience, both in training and in projects, in data modeling and analysis with Microsoft technology like SQL, Power BI, and Fabric for advanced... Show more

Gerardo Lopez Falcon

Gerardo Lopez Falcon

Gerardo is a big fan of DevOps and cloud technologies. He loves to code interesting backend stuff in languages like NodeJs, Java, etc..... He participates as speaker and mentor in different software communities in Costa Rica. He is the first Google Developer Expert in Cloud and Docker captain of America Central.

Gerardo is a big fan of DevOps and cloud technologies. He loves to code interesting backend stuff in languages like NodeJs, Java, etc..... He participates as speaker and mentor in different software communities in Costa Rica. He is the first Google D... Show more

Chris Simon

Chris Simon

Chris is a technology coach and advisor helping technology teams drive business success. His focus is on helping startups realise their vision and new CTOs flourish in their roles. He also supports executives & boards with strategic technology advice, and engineering teams with training, mentoring and consulting in architecture, quality, domain-driven design and test driven development.

He is a regular meetup & conference speaker (https://chrissimon.au/speaking/) and to support teams using Domain-Driven Design, he recently launched https://contextive.tech & co-founded the DDD Australia meetup and the ADAConf (https://adaconf.org) conference.

Chris is a technology coach and advisor helping technology teams drive business success. His focus is on helping startups realise their vision and new CTOs flourish in their roles. He also supports executives & boards with strategic technology advice... Show more

Hannes Lagler-Gruener

Hannes Lagler-Gruener

Hannes Lagler-Gruener is a senior cloud architect with consulting experience of more than 15 years.
Hannes is focusing on cloud architecture and security.
Hannes had deep experience in IaaS, Security, Networking, Governance, and IaC. He started his carrier at one of the biggest Austrian banks and changed to Microsoft Austria after a few years.
Currently, Hannes is working at ACP IT Solutions GMBH as Lead-Cloud Solutions Architect.

Hannes Lagler-Gruener is a senior cloud architect with consulting experience of more than 15 years. Hannes is focusing on cloud architecture and security. Hannes had deep experience in IaaS, Security, Networking, Governance, and IaC. He started his... Show more

Mats Necker

Mats Necker

I like lots of stuff 👉 Power Platform 💘 Dynamics 365 🚀 Azure 🧙‍♂️

Microsoft MVP ✍ blogs at https://nckr.de 🚀 Founded https://dhino.io

I worked for over 15 years with Microsoft Biz Apps as a solution architect / developer, starting with Business Central, nowadays loving the Power Platform & Azure

Building repeatable software has always been my passion and I'm continuing to talk about the best ways to do that 🙂

I like lots of stuff 👉 Power Platform 💘 Dynamics 365 🚀 Azure 🧙‍♂️ Microsoft MVP ✍ blogs at https://nckr.de 🚀 Founded https://dhino.io I worked for over 15 years with Microsoft Biz Apps as a solution architect / developer, starting with Bus... Show more

Brennan Lodge

Brennan Lodge

He has held cyber security, data scientist, and leadership roles at JP Morgan Chase, the Federal Reserve Bank of New York, Bloomberg, and Goldman Sachs. Brennan holds a masters' degree in Business Analytics from New York University and participates in the data science community with his non-profit pro-bono work at DataKind.

He has held cyber security, data scientist, and leadership roles at JP Morgan Chase, the Federal Reserve Bank of New York, Bloomberg, and Goldman Sachs. Brennan holds a masters' degree in Business Analytics from New York University and participates i... Show more

Barkha Herman

Barkha Herman

Barkha Herman is a technologist, experienced developer advocate, and the founder of WiTVoices and South Florida Women in Tech. With a deep understanding of technology and a love for fostering inclusive and diverse tech communities, Barkha is dedicated to empowering individuals and organizations to thrive in the rapidly evolving digital landscape.

In addition to her work at WiTVoices, she takes great pride in leading South Florida Women in Tech. These organizations are committed to empowering women in technology and creating a supportive environment for their professional growth. Through mentorship programs, networking events, and educational initiatives, they strive to break barriers and foster inclusivity in the tech industry.

Barkha Herman is a technologist, experienced developer advocate, and the founder of WiTVoices and South Florida Women in Tech. With a deep understanding of technology and a love for fostering inclusive and diverse tech communities, Barkha is dedicate... Show more

Marco Minerva

Marco Minerva

Marco Minerva has been using .NET since its first introduction. Today he proudly lives in Taggia, Italy, works as a freelance consultant and is involved in designing and developing solutions for the Microsoft ecosystem. His greatest expertise is backend development as a software architect. He holds training courses. He is a speaker at technical events, writes books and articles about developing and regularly makes live streaming about coding on Twitch. He is a Microsoft MVP since 2013.

Marco Minerva has been using .NET since its first introduction. Today he proudly lives in Taggia, Italy, works as a freelance consultant and is involved in designing and developing solutions for the Microsoft ecosystem. His greatest expertise is back... Show more

Lotte Pitcher

Lotte Pitcher

Lotte Pitcher has been building websites with Microsoft technologies for longer than she cares to remember. She ran a web development agency in London and is now Head of the Developer Relations team at Umbraco, where she helps maintain a successful open-source project while engaging with its dedicated global community.

As a Microsoft MVP and a long-time open-source contributor, Lotte organises meetups, hackathons and conferences, speaks at events and releases software. She is a passionate advocate for active participation in tech communities and aims to create inclusive, safe and welcoming spaces - both in-person and virtual - where everyone can learn, collaborate and thrive.

Lotte Pitcher has been building websites with Microsoft technologies for longer than she cares to remember. She ran a web development agency in London and is now Head of the Developer Relations team at Umbraco, where she helps maintain a successful o... Show more

Kenneth van Surksum

Kenneth van Surksum

As a Microsoft 365 Modern Workplace consultant I help customers implement modern workplace solutions based on top of their Microsoft 365 licensing, leveraging products like Microsoft Intune, Microsoft Entra, Microsoft Defender, Exchange Online, Microsoft Teams, Microsoft SharePoint and Microsoft Purview. I constantly build solutions which span these products, taking into account Security, Usability and Manageability as main pillars.

Currently I'm also responsible for the delivery of Secure At Work, a product which can automatically provision Microsoft 365 tenants with best practices configuration and once onboarded keeps customers up to date by using regular releases. Each release adds or updates functionality in Microsoft 365 environments based on best practices and lessons learned from implementation feedback. The Secure At Work solution is already running om more than 10K endpoints, making it proven solution and able to cover 80% of business requirements.

With more than 25 years of experience in IT, I managed to get myself Microsoft certified in 1998, eventually becoming a Microsoft Certified Trainer (MCT), en ultimately receiving my first Microsoft MVP award in 2010. Currently I am a proud dual Microsoft MVP for Microsoft Intune and Identity and Access.

In the past I have worked with many products in the Microsoft infrastructure space, like SMS/System Center Configuration Manager, Active Directory, Virtualization (both VMware as Hyper-V), System Center products like SCOM, SCSM, SCVMM, SCDPM among others.

Kenneth regularly shares his knowledge by blogging at https://www.vansurksum.com and by speaking on national and international events.

As a Microsoft 365 Modern Workplace consultant I help customers implement modern workplace solutions based on top of their Microsoft 365 licensing, leveraging products like Microsoft Intune, Microsoft Entra, Microsoft Defender, Exchange Online, Micro... 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

Rajendra Ongole

Rajendra Ongole

I am currently working as a BI Lead Specialist within the Engineering and Tech Lead Team at Bosch Digital. Holding more than 8 certifications from Microsoft, such as Microsoft Certified Fabric Analytics Engineer, Power BI Analyst, and Microsoft Certified Trainer. I’ve shared insights in Power Platforms forums through sessions, and I contribute through blogging. I worked on different projects, delivering insights to clients. My current skills include: Microsoft Fabric, Microsoft Power BI, SQL, Azure Databricks, Microsoft Excel, Python, and Spark My knowledge-sharing efforts extend across various platforms, including writing blogs, technical reviews of books, forum participation, and live sessions. I take pride in actively participating in and contributing to the Microsoft forums, where I consistently share valuable insights and knowledge.

I am currently working as a BI Lead Specialist within the Engineering and Tech Lead Team at Bosch Digital. Holding more than 8 certifications from Microsoft, such as Microsoft Certified Fabric Analytics Engineer, Power BI Analyst, and Microsoft Certi... Show more

David Oliva

David Oliva

Estoy especializado en el diseño de soluciones cloud-native sobre Azure, con foco en arquitecturas escalables, DevOps, platform engineering y sistemas basados en inteligencia artificial, incluyendo GenAI, agentes y RAG.

A lo largo de más de 15 años de experiencia, he trabajado en la intersección entre negocio y tecnología, ayudando a organizaciones a definir, diseñar y aterrizar soluciones reales, desde la idea inicial hasta la arquitectura, el modelo de entrega y la estimación de costes.

Mi día a día consiste en resolver problemas complejos en entornos enterprise:
– Diseño de arquitecturas en Azure
– Estrategias DevOps y automatización
– Aplicación del Well-Architected Framework
– Construcción de plataformas preparadas para la era de la IA

Tengo un enfoque pragmático y orientado a resultados: la tecnología solo tiene sentido si aporta valor real, es viable y escala.

Además, participo activamente en la comunidad técnica compartiendo conocimiento sobre cloud, arquitectura e inteligencia artificial.

Estoy especializado en el diseño de soluciones cloud-native sobre Azure, con foco en arquitecturas escalables, DevOps, platform engineering y sistemas basados en inteligencia artificial, incluyendo GenAI, agentes y RAG. A lo largo de más de 15 año... Show more

Funke Olasupo

Funke Olasupo

Funke Olasupo is a seasoned Technical Writer with a proven track record of simplifying complex software and developer tools into clear user and developer-focused technical documentation. She currently works at Rocket.Chat which is an open-source communication platform, where she champions various documentation efforts for developer and user-facing products.

Her career spans across fintech, secure collaboration, and developer tooling where she crafts API docs, technical tutorials, user guides, and in-product help systems that serve diverse audiences across industries.

Previously, she worked with OpenFoodFacts and Macrometa and has contributed as a guest author to platforms like Twilio, Honeybadger, and ButterCMS through backend engineering tutorials and documentation.

Beyond her work in tech writing, Funke is deeply involved in developer community growth. As a Google Developer Groups (GDG) co-organizer and Women Techmakers (WTM) Ambassador, she co-organizes developer meetups and women-in-tech events that promote diversity, inclusion, and continuous technical learning in the African tech ecosystem.

Funke’s work stands at the intersection of technical communication, open-source advocacy, and community empowerment, making her a valuable voice in Africa’s fast-growing tech space.

Funke Olasupo is a seasoned Technical Writer with a proven track record of simplifying complex software and developer tools into clear user and developer-focused technical documentation. She currently works at Rocket.Chat which is an open-source com... Show more

Rockford Lhotka

Rockford Lhotka

Rockford Lhotka is VP of Strategy at Xebia. He is the creator of the widely used CSLA .NET open-source software framework, the author of numerous books, and regularly speaks at major conferences around the world. Rockford is a member of the Microsoft Regional Director and MVP programs. For more information go to https://lhotka.net.

Rockford Lhotka is VP of Strategy at Xebia. He is the creator of the widely used CSLA .NET open-source software framework, the author of numerous books, and regularly speaks at major conferences around the world. Rockford is a member of the Microsoft... Show more

James Serra

James Serra

James works at Microsoft as a big data and data warehousing solution architect where he has been for most of the last ten years. He is a thought leader in the use and application of Big Data and advanced analytics, including data architectures such as the modern data warehouse, data lakehouse, data fabric, and data mesh. Previously he was an independent consultant working as a Data Warehouse/Business Intelligence architect and developer. He is a prior SQL Server MVP with nearly 40 years of IT experience. He is a popular blogger (JamesSerra.com) and speaker, having presented at dozens of major events including PASS Summit, SQLBits, Data Summit, SQLDay, Enterprise Data World conference, Big Data Conference Europe, SQL Saturdays, and Informatica World. He is the author of the book “Deciphering Data Architectures: Choosing Between a Modern Data Warehouse, Data Fabric, Data Lakehouse, and Data Mesh”.

James works at Microsoft as a big data and data warehousing solution architect where he has been for most of the last ten years. He is a thought leader in the use and application of Big Data and advanced analytics, including data architectures such ... 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.