Most Active Speakers 2025

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

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Tanya Janca

Tanya Janca

Tanya Janca, aka SheHacksPurple, is the best-selling author of 'Alice and Bob Learn Secure Coding’ and 'Alice and Bob Learn Application Security’. She is currently the CEO and secure coding trainer at She Hacks Purple Consulting. Over her 28-year IT career she has won countless awards (including OWASP Lifetime Distinguished Member and Hacker of the Year), spoken all over the planet, and is a prolific blogger. Tanya has trained thousands of software developers and IT security professionals, via her online academies (We Hack Purple and Semgrep Academy), and her live training programs. Having performed counter-terrorism, led security for the 42nd Canadian general election, developed or secured countless applications, Tanya Janca is widely considered an international authority on the security of software.

Advisor: Smithy, Katilyst

Board Member: Forte Group
Founder: DevSec Station, We Hack Purple, OWASP DevSlop, #CyberMentoringMonday, WoSEC
Contributor: OWASP Top Ten, StackOverflow

Tanya Janca, aka SheHacksPurple, is the best-selling author of 'Alice and Bob Learn Secure Coding’ and 'Alice and Bob Learn Application Security’. She is currently the CEO and secure coding trainer at She Hacks Purple Consulting. Over her 28-year IT ... Show more

Tom Martens

Tom Martens

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 analytical challenges using Microsoft Fabric and Power BI. Alongside his full-time role, he offers freelance consulting for data platform and analytics projects. Tom is a regular speaker at international conferences and user group meetings, and co-author of the book Pro DAX with Power BI.

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

Diego Rodríguez Varela

Diego Rodríguez Varela

I am currently a Microsoft MVP and Software Developer Engineer at Plain Concepts, where I mainly focus on working with Microsoft technologies.

Within my work, I am particularly drawn to the focus on security. I am interested in exploring the methodologies and technologies that allow us to achieve secure stystems, and how we can apply these principles in organizations of different sizes. I strive to achieve these goals and contribute to creating safer and more reliable technological environments.

Besides software development, I am passionate about sports, motorbikes and, when I have enough time, travelling.

I am currently a Microsoft MVP and Software Developer Engineer at Plain Concepts, where I mainly focus on working with Microsoft technologies. Within my work, I am particularly drawn to the focus on security. I am interested in exploring the metho... Show more

Gabriel Naranjo Lituma

Gabriel Naranjo Lituma

Cloud enthusiast and technology lover’s. I work with Azure and other cloud, handling the nitty-gritty tech stuff (think of me as a high-flying engineer) and the creative side (designing awesome solutions).
On top of that, I spend my time doing workshops, offering consultancy, and geeking out about the latest and greatest in the world of the cloud. As if that's not enough fun, I'm also a Microsoft Certified Trainer (MCT), which means I get a kick out of helping people level up their tech skills.
I'm always on the lookout for exciting ways to take technology to the next level and help businesses perform better. Connect with me, and let's explore what the cloud can do for you. Let's make some tech magic together!"

Cloud enthusiast and technology lover’s. I work with Azure and other cloud, handling the nitty-gritty tech stuff (think of me as a high-flying engineer) and the creative side (designing awesome solutions). On top of that, I spend my time doing works... Show more

Chen Shiri

Chen Shiri

Chen Shiri is a cyber security researcher, hacker, known for his research on low-level security and containers isolation. His research has revealed significant flaws within widely-used services and prominent vendors. In addition to its research on Accenture, he published research with early examples of weaknesses in microservices and container-based web apps.

Chen Shiri is a cyber security researcher, hacker, known for his research on low-level security and containers isolation. His research has revealed significant flaws within widely-used services and prominent vendors. In addition to its research on ... Show more

Andrea Dottor

Andrea Dottor

Andrea Dottor, I am a consultant, developer, and trainer in the .NET field (primarily ASP.NET and Blazor), author of the podcast 📢 '.NET in Pillole,' and a 🏆 Microsoft MVP since 2008.

I am one of the founding members of XE - Development User Group (XeDotNet).

I began my journey in software development in 2002 using the .NET Framework in the industrial automation sector, later transitioning to the web world in 2005, a field that has fascinated me and continues to provide new challenges and opportunities for growth.

Andrea Dottor, I am a consultant, developer, and trainer in the .NET field (primarily ASP.NET and Blazor), author of the podcast 📢 '.NET in Pillole,' and a 🏆 Microsoft MVP since 2008. I am one of the founding members of XE - Development User Gro... Show more

Christian Henrik Reich

Christian Henrik Reich

Sr. Solution Architect at Microsoft. I started programming as a kid and never stopped. I have worked across everything from embedded systems to large‑scale data platforms. My work over the past decade has focused on Data and AI with a strong emphasis on Microsoft Fabric, SQL Server, Databricks, cloud‑scale architectures, modern data engineering, and Machine Learning. I volunteer teaching AI and Machine Learning, and I’m currently writing “The Data Engineer’s Guide to Microsoft Fabric” for O’Reilly.

Sr. Solution Architect at Microsoft. I started programming as a kid and never stopped. I have worked across everything from embedded systems to large‑scale data platforms. My work over the past decade has focused on Data and AI with a strong emphasis... Show more

Dieter Gobeyn

Dieter Gobeyn

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-certified architect, he helps large distributed organisations simplify complex landscapes, align business domains, and build integration strategies that actually work across countries and teams.
He speaks at events about cloud architecture, enterprise integration, and the real lessons learned from modernising systems, adopting AI, and running global platforms without unnecessary complexity.

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

Jonah Andersson

Jonah Andersson

Jonah Andersson is a Fullstack Developer and Lead Cloud DevOps Engineer based in Sweden.
She works as a Senior Azure Consultant with different tech hats. With a background in Computer Science and System Development, Jonah specializes in .NET technologies and excels in cloud development, particularly within Microsoft Azure.

Passionate about solving complex problems and crafting modern applications, Jonah succeeds in working with cloud platforms like Azure, and her expertise in cloud computing and development has earned her international recognition. She is recognized as a Microsoft Most Valuable Professional and Microsoft Certified Trainer for her contributions to the tech industry. Her book, 'Learning Microsoft Azure: Cloud Computing and Development Fundamentals' (O'Reilly Media), further highlights her expertise and the depth of her technical knowledge.

She actively engages in tech communities and international events, fosters connections, and shares insights with fellow developers. Jonah's leadership extends beyond her technical expertise. As the founder and leader of the Azure User Group Sweden, she guides, inspires, and leads others in tech. She is also an MCT Community Lead from Sweden, helping and supporting fellow Microsoft Certified Trainers in the community.

Her advocacy for gender equality and inclusion in tech, recognized by her Developer of the Year awards in 2023 at the Nordic Women in Tech Awards and in 2024 at Developers Day, is a testament to her commitment to making the tech industry a more inclusive space. She actively mentors aspiring women in tech careers and co-hosts the Extend Women In Tech Podcast, to inspire inclusive tech for all.

Jonah Andersson is a Fullstack Developer and Lead Cloud DevOps Engineer based in Sweden. She works as a Senior Azure Consultant with different tech hats. With a background in Computer Science and System Development, Jonah specializes in .NET techno... Show more

Henry Been

Henry Been

Henry Been is an independent architect and developer from The Netherlands. He enjoys working with software development teams to create and deliver software for the Azure cloud. His interests include Azure, Agile, DevOps, software architecture and the design and implementation of testable and maintainable software. Besides his work he is a speaker at international conferences, is the author of two books, and creates online training courses for Pluralsight and A Cloud Guru. For his work in the community, he has been awarded the Microsoft MVP Award since 2019. To follow Henry, you can go to his blog henrybeen.nl or look him up on LinkedIn: https://www.linkedin.com/in/henrybeen

Henry Been is an independent architect and developer from The Netherlands. He enjoys working with software development teams to create and deliver software for the Azure cloud. His interests include Azure, Agile, DevOps, software architecture and the... Show more

Somesh Pathak

Somesh Pathak

Somesh is a Microsoft MVP in Enterprise Mobility, boasting over 17 years of experience in IT infrastructure and endpoint management. Currently, he works as Manager, Modern Workplace Engineering at Avanade, Netherlands. His profound expertise in Apple technologies has established him as a sought-after consultant and a respected voice in the tech community.

He has a solid history of designing and implementing cutting-edge workplace solutions for a diverse range of global clients. His work spans end-to-end client management, administration, security, and automation. Somesh is particularly skilled in leveraging Microsoft Intune for efficient mobile device management, ensuring that organizations transition smoothly into more agile and effective operational frameworks. Beyond his technical endeavors, Somesh is dedicated to disseminating his knowledge across various technical communities through social media and his personal blog. Additionally, he is an active and engaging speaker.

Somesh is a Microsoft MVP in Enterprise Mobility, boasting over 17 years of experience in IT infrastructure and endpoint management. Currently, he works as Manager, Modern Workplace Engineering at Avanade, Netherlands. His profound expertise in Apple... Show more

Gregorio Palamà

Gregorio Palamà

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 GDG Pescara together with other developers, I love sharing my knowledge and trying to do it in a fun way.

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

Marit van Dijk

Marit van Dijk

With over 20 years of software development experience, Marit is passionate about building great software with great people, and making developers’ lives easier.
She regularly presents at international conferences and shares her expertise through webinars, podcasts, blog posts, videos, and tutorials. She's also contributed to the book “97 Things Every Java Programmer Should Know” (O’Reilly Media).

With over 20 years of software development experience, Marit is passionate about building great software with great people, and making developers’ lives easier. She regularly presents at international conferences and shares her expertise through web... Show more

Andy Cutler

Andy Cutler

I am an Azure Data Platform professional working predominantly with Azure Synapse Analytics (SQL Pools), Data Factory, SQL Server and Power BI. I hold an MSc in Business Intelligence and Data Mining. I am a current Microsoft Data Platform MVP.

I am an Azure Data Platform professional working predominantly with Azure Synapse Analytics (SQL Pools), Data Factory, SQL Server and Power BI. I hold an MSc in Business Intelligence and Data Mining. I am a current Microsoft Data Platform MVP. Show more

Nicklas Ahlberg

Nicklas Ahlberg

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:
* Security (Microsoft Intune)
* Windows and Devices (Windows)

He has spoken at events such as:
* Workplace Ninjas Virtual Event (21)
* HTMD (21)
* TechMentor Orlando (22)
* Live 360 Orlando (22)
* MMUGSE, (23,24,25)
* NIC (23,25)
* India Cloud Security Summit (23,25)
* Experts Live Denmark (24,25)
* AVD Tech Fest (24)
* MEM Summit (22,23,24,25)
* Cloud Technology Townhall Tallinn (25)
* Workplace Ninjas NL Connect (25)
* MC2MC Connect (25)
* MMSMOA (25)
* Experts Live NL (25)
* Workplace Ninjas NO (25)
* Workplace Ninjas UK (25)
* Workplace Ninjas Summit (25)

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

Peter De Tender

Peter De Tender

Peter has an extensive background in architecting, deploying, managing and training on Microsoft technologies, dating back to Windows NT4 Server in 1996, all the way to the latest and modern Azure and AI solutions available today. With a passion for Cloud Architecture and DevOps, Peter always has a story to share on how to optimize your Enterprise-ready cloud workloads, from skilling the world largest Microsoft customers through compelling workshops over the last 15 years. After 6,5 years at Microsoft as Microsoft Technical Trainer, he recently transitioned into the role of Senior Content Developer for Dev/AI/DevOps, focusing on DevOps/GitHub content on https://aka.ms/Learn and Instructor Led Training (ILT) material, used by global Microsoft Certified Trainers (MCTs).

You can follow peter on LinkedIn (/in/pdtit) and read his (mostly) technical blog adventures on http://www.007ffflearning.com

Peter has an extensive background in architecting, deploying, managing and training on Microsoft technologies, dating back to Windows NT4 Server in 1996, all the way to the latest and modern Azure and AI solutions available today. With a passion for ... Show more

Sharon Smith

Sharon Smith

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 meet diverse global and national business requirements, that lead to positive customer outcomes.

15x Microsoft Certified and Success by Design Accredited, I use its principles that blend strategic design, rigorous gap analysis, and the pursuit of excellence in service delivery, to craft pathways to success for customers.

As Founder of the UK Charity HeuristicDev: The Mentoring Hub and regular Community contributor through my HeuristicDev blog posts and public speaking, I have a 'thing' for learning, a thirst for knowledge, and a desire for sharing both to uplift and empower all.

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

Jasper Oosterveld

Jasper Oosterveld

My name is Jasper Oosterveld. I am a Microsoft MVP, Data Security & Microsoft 365 Consultant based in the Netherlands. I’ve spent the last decade helping organizations tackle complex challenges around Microsoft 365 Governance, Adoption and Data Security with Microsoft Purview. My mission? To empower companies to protect their data and streamline collaboration in Microsoft 365, all while keeping Governance, Adoption and Data Security at the forefront.

My name is Jasper Oosterveld. I am a Microsoft MVP, Data Security & Microsoft 365 Consultant based in the Netherlands. I’ve spent the last decade helping organizations tackle complex challenges around Microsoft 365 Governance, Adoption and Data Secur... Show more

Massimo Crippa

Massimo Crippa

Massimo Crippa is a cloud enthusiast with 20+ years of experience shaping enterprise solutions on Microsoft technologies.

He began his career in the Italian ICT sector as a web developer, before moving into middleware and messaging projects. Since 2011, he has been based in Belgium, where he works as a Lead Architect at Codit.
Massimo’s expertise spans the entire cloud journey from defining strategy and showcasing Azure PaaS and container-based solutions, to delivering hands-on implementations with customers.

Outside of work, he’s a proud dad of two, passionate about motorbikes, and always eager to explore the latest in cloud technology.

Massimo Crippa is a cloud enthusiast with 20+ years of experience shaping enterprise solutions on Microsoft technologies. He began his career in the Italian ICT sector as a web developer, before moving into middleware and messaging projects. Since... Show more

Tom van den Berg

Tom van den Berg

Tom van den Berg is a lead developer at Info Support.
As a developer he is part of a team that realizes new and innovative solutions.
Tom likes to think outside of the box and he gets a lot of energy from sharing knowledge and encourage other people to think outside of the box.

Tom van den Berg is a lead developer at Info Support. As a developer he is part of a team that realizes new and innovative solutions. Tom likes to think outside of the box and he gets a lot of energy from sharing knowledge and encourage other peopl... Show more

Jimmy Engström

Jimmy Engström

Jimmy Engström has been developing ever since he was 7 years old and got his first computer.
He loves to be on the cutting edge of technology, trying new things.
When he got wind of Blazor, he immediately realized its potential and adopted it when it was in beta. He has been running Blazor in production since it was launched by Microsoft.
He is the author of "Web Development with Blazor" and the co-host of Coding After Work (podcast and stream).
His passion for the .NET industry and community has taken him around the world, speaking about development. Microsoft has recognized this passion by awarding him the
Microsoft Most Valuable Professional award 11 years in a row.
He occasionally blogs at engstromjimmy.com.

codingafterwork.com

Jimmy Engström has been developing ever since he was 7 years old and got his first computer. He loves to be on the cutting edge of technology, trying new things. When he got wind of Blazor, he immediately realized its potential and adopted it when... Show more

Tine Staric

Tine Staric

Tine Staric is a strategist at Companial, helping Partners around the world develop products of the highest quality. He has been a Dynamics BC developer since 2015, working with end-customers, VARs, and ISVs, delivering support, implementation, localization, and product projects. He leads most developer productivity initiatives at Companial, and is constantly looking for opportunities to eliminate monotonous developer tasks by using modern tools and automation to make room for creative, fun, and high-value development.

Tine Staric is a strategist at Companial, helping Partners around the world develop products of the highest quality. He has been a Dynamics BC developer since 2015, working with end-customers, VARs, and ISVs, delivering support, implementation, local... Show more

Shawn Wildermuth

Shawn Wildermuth

Shawn Wildermuth has been tinkering with computers and software since he got a Vic-20 back in the early ‘80s. As a Microsoft MVP since 2003. He’s the author of over twenty Pluralsight courses, written eight books, has a popular YouTube channel, and is one of the Wilder Minds. You can reach him at his blog at http://wildermuth.com.

As a filmmaker, he creates documentaries including a feature-length, documentary about software developers today called “Hello World: The Film”. You can see more about it at http://twainfilms.com.

Shawn Wildermuth has been tinkering with computers and software since he got a Vic-20 back in the early ‘80s. As a Microsoft MVP since 2003. He’s the author of over twenty Pluralsight courses, written eight books, has a popular YouTube channel, and i... Show more

Daniel Afonso

Daniel Afonso

Daniel Afonso is a Senior Developer Advocate at PagerDuty, SolidJS DX team member, Instructor at Egghead.io, and Author of State Management with React Query. Daniel has a full-stack background, having worked with different languages and frameworks on various projects from IoT to Fraud Detection. He is passionate about learning and teaching and has spoken at multiple conferences around the world about topics he loves. In his free time, when he's not learning new technologies or writing about them, he's probably reading comics or watching superhero movies and shows.

Daniel Afonso is a Senior Developer Advocate at PagerDuty, SolidJS DX team member, Instructor at Egghead.io, and Author of State Management with React Query. Daniel has a full-stack background, having worked with different languages and frameworks on... Show more

Andres Almiray

Andres Almiray

Andres is a Java/Groovy developer and a Java Champion, with more than 2 decades of experience in software design and development. He has been involved in web and desktop application development since the early days of Java. Andres is a true believer in open source and has participated on popular projects like Groovy, Griffon, and DbUnit, as well as starting his own projects. Founding member of the Griffon framework and Hackergarten community event. Author of JReleaser.

Andres is a Java/Groovy developer and a Java Champion, with more than 2 decades of experience in software design and development. He has been involved in web and desktop application development since the early days of Java. Andres is a true believer ... Show more

Jean Joseph

Jean Joseph

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 and generative AI.

He helps organizations build secure, scalable solutions across both legacy systems and modern cloud platforms. Formerly recognized as a Microsoft MVP and senior technical trainer at Microsoft, Jean brings deep technical insight and a passion for teaching.

He’s also a dynamic speaker, mentor, and the founder of the Cloud Data Driven User Group and the Future Data Driven Summit, where he champions innovation and promotes responsible use of emerging tech within the data community.

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

Josh Long

Josh Long

Josh (@starbuxman) has been the first Spring Developer Advocate since 2010. Josh is a Java Champion, author of 7 books (including "Reactive Spring") and numerous best-selling video training (including "Building Microservices with Spring Boot Livelessons" with Spring Boot co-founder Phil Webb), and an open-source contributor (Spring Boot, Spring Integration, Axon, Spring Cloud, Activiti, Vaadin, etc), a Youtuber (Coffee + Software with Josh Long as well as my Spring Tips series ), and a podcaster ("A Bootiful Podcast").

Josh (@starbuxman) has been the first Spring Developer Advocate since 2010. Josh is a Java Champion, author of 7 books (including "Reactive Spring") and numerous best-selling video training (including "Building Microservices with Spring Boot Liveless... Show more

Graziano Casto

Graziano Casto

Graziano is a DevRel Engineer at Akamas, where he spends his days convincing computers to stop being lazy and start being efficient. A former distributed systems developer and product manager, he’s now on a mission to optimize the entire cloud-native universe, one Pod at a time. As a Tech Lead for the CNCF TAG DevEx and a member of the Kubernetes Release Team since v1.34, he balances deep infrastructure roots with a passion for developer happiness. Obsessed with AI, Platform Engineering, and saving the planet through better code, Graziano is basically trying to make the cloud faster, greener, and significantly less annoying for everyone.

More on: https://castograziano.com/

Graziano is a DevRel Engineer at Akamas, where he spends his days convincing computers to stop being lazy and start being efficient. A former distributed systems developer and product manager, he’s now on a mission to optimize the entire cloud-native... Show more

Spencer Schneidenbach

Spencer Schneidenbach

Spencer Schneidenbach is an AI Architect and CTO of Aviron Labs, an AI and software development firm based in the United States. He has been recognized as a Microsoft MVP for his AI expertise and contributions to the community. Visit our website at https://avironlabs.com for more information.

Spencer Schneidenbach is an AI Architect and CTO of Aviron Labs, an AI and software development firm based in the United States. He has been recognized as a Microsoft MVP for his AI expertise and contributions to the community. Visit our website at h... Show more

Satish Upadhyaya

Satish Upadhyaya

I am a Global Microsoft 365 Architect. with over 12+ years of experience in the field of unified communications. I have a deep understanding of the entire unified communications lifecycle, from presales to deployment and user adoption. I am also a Microsoft MVP for Microsoft Teams, which means that I am a recognized expert in the platform.

I have worked with a variety of businesses of all sizes, helping them to implement unified communications solutions that meet their specific needs. I have a proven track record of success in delivering innovative solutions that help businesses to improve their communication and collaboration capabilities.

In addition to my technical skills, I also have strong telecom expertise. I have a deep understanding of the telecom regulations around the world and I can help businesses to comply with these regulations.

I am a highly motivated and results-oriented individual with a passion for helping businesses to communicate and collaborate more effectively. I am confident that I can make a significant contribution to your team and help you to achieve your business goals.

I am a Global Microsoft 365 Architect. with over 12+ years of experience in the field of unified communications. I have a deep understanding of the entire unified communications lifecycle, from presales to deployment and user adoption. I am also a Mi... 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.