Most Active Speakers 2025

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

  • 1125 speakers
  • Auto-generated
Rafael Báguena Girbés

Rafael Báguena Girbés

Computer engineer with 15 years of experience in implementing business intelligence, engineering, and data analytics solutions. I love learning new things, pushing technology further, and collaborating on exciting projects that add value at all levels.

Computer engineer with 15 years of experience in implementing business intelligence, engineering, and data analytics solutions. I love learning new things, pushing technology further, and collaborating on exciting projects that add value at all level... Show more

Neel Shah

Neel Shah

A DevOps engineer with a great passion for building communities around DevOps. Organiser of Google Cloud Gandhinagar, CNCF Gandhinagar, Hashicorp User Group Gandhinagar and Open Source Weekend. Have mentored 15+ hackathons and open source programs. I have given more than 15 talks at conferences such as KubeCon India, Platform Con 2024, DevFest, HashiTalk India 23, LinuxFest Northwest, 90 Days of DevOps, and many more.

GCP Devops, Cloud Professional certified, Azure -104 certified, Finops Engineer Certified, Terraform and Vault Certified

A DevOps engineer with a great passion for building communities around DevOps. Organiser of Google Cloud Gandhinagar, CNCF Gandhinagar, Hashicorp User Group Gandhinagar and Open Source Weekend. Have mentored 15+ hackathons and open source programs. I... Show more

Nicholas Chang

Nicholas Chang

Nicholas Chang is a Senior Platform Engineer at Kainos with a deep passion for Microsoft Azure.

With extensive experience in cloud technologies and a focus on Azure, he is the founder of the Microsoft Azure Community User Group, where he fosters knowledge sharing, collaboration, and growth within the tech community.

Nicholas is also the creator and host of the Microsoft Community Insights podcast, where he connects with industry leaders and shares valuable insights about Azure and the broader tech ecosystem.

As a dedicated community advocate, Nicholas contributes by speaking at events and sharing his expertise through his blog, nicholaschangblog.com. You can connect with him on Twitter: @nick_cloudops or visit his blog to learn more.

Nicholas Chang is a Senior Platform Engineer at Kainos with a deep passion for Microsoft Azure. With extensive experience in cloud technologies and a focus on Azure, he is the founder of the Microsoft Azure Community User Group, where he fosters k... Show more

Andrea Della Porta

Andrea Della Porta

Born in Rome in 1994, passionate about mobile development since forever. Andrea has been a technology enthusiast for as long as he can remember. He started developing his first Java programs in his early high school years, but with the advent of smartphones, he quickly fell in love with the mobile world. His experience started in Switzerland for an Android project in the medical field and continued for large companies such as NTT Data and Deloitte, until he got to his current Capgemini. Over the years he has developed applications with large user bases for various industries, specializing in native Android development, Flutter and now Kotlin Multiplatform.
His life is not only programming, but also football and padel!

Born in Rome in 1994, passionate about mobile development since forever. Andrea has been a technology enthusiast for as long as he can remember. He started developing his first Java programs in his early high school years, but with the advent of smar... 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

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

Tanja Wiehoff

Tanja Wiehoff

I love to bring enthusiasm to my speaches and trainings.
I want people to have fun with the M365 tools and I want them to experience how easy it is to create awesome solutions in only minutes.

I love to bring enthusiasm to my speaches and trainings. I want people to have fun with the M365 tools and I want them to experience how easy it is to create awesome solutions in only minutes. 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

Johnny Hooyberghs

Johnny Hooyberghs

Johnny Hooyberghs is a managing partner and consultant for Involved NV, part of the Cronos group, since 2014 focusing on software architecture, backend development and a Microsoft Most Valuable Professional for Azure and Developer Technologies since 2020. Prior to joining Involved as a consultant, he has had experience developing software for the health-care sector since 2008. Johnny has been passionate about software development using the .NET stack, cloud native development using the Microsoft Azure cloud stack and quantum computing. Johnny has spent 10 years of his free time teaching software development courses for the adult education institute CVO Antwerpen and has been enjoying public speaking these past 6 years. When Johnny is not working, he likes to spend his time on self-education, quantum computing, some casual video gaming, travelling the world and visiting as many theme parks as possible.

Johnny Hooyberghs is a managing partner and consultant for Involved NV, part of the Cronos group, since 2014 focusing on software architecture, backend development and a Microsoft Most Valuable Professional for Azure and Developer Technologies since ... 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

Hasan Savran

Hasan Savran

Hasan is a recognized Microsoft Data Platform MVP and an expert in Azure data products, bringing over 20 years of experience in software development, architecture, and management. As the owner of SavranWeb Consulting and the Senior Business Intelligence Manager at Progressive Insurance, he specializes in designing innovative business solutions leveraging the latest web and database technologies. A passionate global conference speaker, Hasan enjoys sharing his insights through blogging about Azure Data services, C#, and front-end development.

Hasan is a recognized Microsoft Data Platform MVP and an expert in Azure data products, bringing over 20 years of experience in software development, architecture, and management. As the owner of SavranWeb Consulting and the Senior Business Intellige... Show more

Davide Passafaro

Davide Passafaro

Senior Frontend Engineer and Google Developer Expert in Angular, Davide leads the GDG Roma Città and Angular Roma communities.

While rooted in Angular, he is currently expanding his horizons into Node.js, React, and AI experimentation to share fresh insights through talks and workshops.

Outside of coding, he is an archery enthusiast, a board game strategist, and a fan of escape rooms.

Senior Frontend Engineer and Google Developer Expert in Angular, Davide leads the GDG Roma Città and Angular Roma communities. While rooted in Angular, he is currently expanding his horizons into Node.js, React, and AI experimentation to share fre... Show more

Tatu Seppälä

Tatu Seppälä

Tech explorer & lifetime learner. Deep experience in consultancy, advisory and architectural roles in the Microsoft cloud tech space. Special focus areas include (but are not limited to) insider risk, compliance and data security.

Tech explorer & lifetime learner. Deep experience in consultancy, advisory and architectural roles in the Microsoft cloud tech space. Special focus areas include (but are not limited to) insider risk, compliance and data security. Show more

Matthijs van der Veer

Matthijs van der Veer

Matthijs is a Coding Architect at Xebia. With a strong focus on Azure and AI, he helps clients achieve more on Azure. Matthijs has a passion for creating good work environments, writing great code, and building amazing teams.

Matthijs trained and led teams in different countries. He strongly believes that remote and distributed teams can be just as (or more) effective than sitting in the same old office together. Matthijs received the Microsoft MVP Award for five consecutive years.

Matthijs is a Coding Architect at Xebia. With a strong focus on Azure and AI, he helps clients achieve more on Azure. Matthijs has a passion for creating good work environments, writing great code, and building amazing teams. Matthijs trained and ... Show more

Nanddeep Nachan

Nanddeep Nachan

Microsoft MVP (M365 and AI Platform), MCT

A results oriented consultant with experience in Microsoft Technologies especially with Microsoft 365, Power Platform, and Microsoft Azure. Experienced in design, implementation, configuration, and maintenance of several large-scale projects.

Author of books:
➟ Mastering SharePoint Framework (BPB Publications), Amazon bestseller
➟ Understanding Hybrid Environments in SharePoint 2019 (Apress)
➟ Up and Running on Microsoft Viva Connections (Apress)

Organizer of Pune Tech Community (https://www.meetup.com/pune-tech-community/)

Microsoft MVP (M365 and AI Platform), MCT A results oriented consultant with experience in Microsoft Technologies especially with Microsoft 365, Power Platform, and Microsoft Azure. Experienced in design, implementation, configuration, and mainten... Show more

Kathryn Grayson Nanz

Kathryn Grayson Nanz

In 2013, I graduated with a BFA and took my first job as a Junior Graphic Designer at a small, boutique ad agency. While there, my Creative Director warned me to never let anyone find out I could code, because if I did I'd be stuck doing it forever. I ignored his warning; it turns out he was completely right, but I've never been happier.

I currently work as a developer advocate on a wonderful team where I help people build web applications in React, design and maintain their UI component libraries, and desperately attempt to stop back-end devs from writing any more CSS.

In 2013, I graduated with a BFA and took my first job as a Junior Graphic Designer at a small, boutique ad agency. While there, my Creative Director warned me to never let anyone find out I could code, because if I did I'd be stuck doing it forever. ... Show more

Alberto Mori

Alberto Mori

Software Developer. In love with Web and .NET. I like to try and learn always something new.

I try to share my experience living the community. I'm the host of "Spike time" (https://www.ugidotnet.org/tv/3307/Spike-time) and sometimes you can find me live on my Twitch channel, writing code.

Software Developer. In love with Web and .NET. I like to try and learn always something new. I try to share my experience living the community. I'm the host of "Spike time" (https://www.ugidotnet.org/tv/3307/Spike-time) and sometimes you can find ... Show more

Daniel Hutmacher

Daniel Hutmacher

SQL Server developer for 25-odd years, Microsoft Data Platform MVP, Redgate Community Ambassador, organizer of Data Saturday Stockholm and Stockholm SQL, volunteer/co-organizer of GroupBy.org. I still occasionally blog at sqlsunday.com.

SQL Server developer for 25-odd years, Microsoft Data Platform MVP, Redgate Community Ambassador, organizer of Data Saturday Stockholm and Stockholm SQL, volunteer/co-organizer of GroupBy.org. I still occasionally blog at sqlsunday.com. 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

Luca Di Vita

Luca Di Vita

I hold a degree in Computer Engineering from the University of L'Aquila. My passion lies in research, particularly in Machine Learning and Evolutionary Computation.
I work as a Machine Learning Engineer in the IT sector, focusing on security and defense.
Driven by curiosity and a love for continuous learning, I have ventured into the world of Dev Talks, where I enjoy sharing knowledge and connecting with the tech community.

My goal is to inspire and engage others with the same enthusiasm that fuels my work, fostering discussions that push the boundaries of technology and innovation.

See my personal blog here: https://www.lucadivita.it/

I hold a degree in Computer Engineering from the University of L'Aquila. My passion lies in research, particularly in Machine Learning and Evolutionary Computation. I work as a Machine Learning Engineer in the IT sector, focusing on security and def... Show more

Katerina Chernevskaya

Katerina Chernevskaya

Katerina, an MVP, MCT, and renowned public speaker, focuses on Power Platform & AI. With twenty years of experience and key certifications in PROSCI, PMI, Power Platform Solution Architect, she leads in app development, AI, and adaptive work models. Active in the Microsoft community, Katerina mentors new tech talent and supports innovation. Katerina takes part in the #SharingIsCaring initiative, guiding community contributions to the Microsoft Sample Solution Gallery.

https://www.linkedin.com/in/katerinachernevskaya/

Katerina, an MVP, MCT, and renowned public speaker, focuses on Power Platform & AI. With twenty years of experience and key certifications in PROSCI, PMI, Power Platform Solution Architect, she leads in app development, AI, and adaptive work models. ... Show more

Ronni Pedersen

Ronni Pedersen

Ronni is working as a Cloud Architect in Denmark. He has been working as a consultant since 1997 with a primary focus on Enterprise Client Management solutions, based on technologies like Microsoft Intune, Microsoft Configuration Manager, Enterprise Mobility + Security (EMS), Microsoft 365, Windows 11 and Windows 365.
Ronni is also a Microsoft Certified Trainer and Microsoft MVP in Enterprise Mobility and an appreciated speaker at events like Microsoft Campus Days, Microsoft Management Summit (MMS), Microsoft Ignite, Microsoft Techdays, Nordic Infrastructure Conference, Techorama, Workplace Njina Summit and at local User Group events.

Ronni is working as a Cloud Architect in Denmark. He has been working as a consultant since 1997 with a primary focus on Enterprise Client Management solutions, based on technologies like Microsoft Intune, Microsoft Configuration Manager, Enterprise ... Show more

Gerald Versluis

Gerald Versluis

Meet Gerald Versluis, software engineer at Microsoft, who wields the power of .NET to conquer any project that comes his way. With a career spanning over a decade, he's tackled it all, from frontend to backend and everything in between, using .NET MAUI, Azure, ASP.NET, and all the other .NET goodies. And these days of course; AI and Copilot.

But it wasn't until he discovered the magic of Xamarin that he truly fell in love with mobile and cross-platform development, becoming an active community member and sharing his knowledge through writing, tweeting, and presentations. When he's not saving the world of software, you can find him on Twitter @jfversluis, blogging at https://blog.verslu.is, or making videos on his YouTube channel: https://youtube.com/GeraldVersluis.

Meet Gerald Versluis, software engineer at Microsoft, who wields the power of .NET to conquer any project that comes his way. With a career spanning over a decade, he's tackled it all, from frontend to backend and everything in between, using .NET MA... Show more

Simon Martinelli

Simon Martinelli

Simon Martinelli is a Java Champion, Vaadin Champion, and Oracle ACE Pro with over three decades of experience as a software architect, developer, consultant, and trainer. He is the creator of the AI Unified Process (AIUP) and a strong advocate of Spec-Driven Development.
As the owner of Martinelli LLC, he coaches teams to get up to speed with AI-driven development. He regularly shares his insights through international conferences, articles, and his blog, Keep IT Simple (https://martinelli.ch), where he writes about AI, architecture, and modern Java development.
He is also a lecturer at two universities in Switzerland, where he teaches software architecture, persistence, DevOps, and cloud-native development.

Simon Martinelli is a Java Champion, Vaadin Champion, and Oracle ACE Pro with over three decades of experience as a software architect, developer, consultant, and trainer. He is the creator of the AI Unified Process (AIUP) and a strong advocate of Sp... Show more

Taswar Bhatti

Taswar Bhatti

Taswar Bhatti works for Microsoft as AI Security Cloud Solutions Architect. Prior to his current position he also worked as a Solutions Architect for AWS, his focus areas are security and machine learning. He holds a BSc in Mathematics and Computing Science from University of Alberta, and is well versed in architectural design, security and building large scale security web applications; not to mention he was a Microsoft MVP for 8 years.

Taswar is also fluent in many spoken languages: Cantonese, English, Turkish, and Urdu/Hindi.

Taswar Bhatti works for Microsoft as AI Security Cloud Solutions Architect. Prior to his current position he also worked as a Solutions Architect for AWS, his focus areas are security and machine learning. He holds a BSc in Mathematics and Computing... Show more

Renato Romão de Souza

Renato Romão de Souza

6x Microsoft Most Valuable Professional (MVP) – Business Applications & Azure AI
4x Microsoft Certified Trainer (MCT)

🔧 Expertise & Experience:
With over 11+ years of experience developing Microsoft 365 solutions and 8+ years of Power Platform development, I am passionate about crafting innovative solutions that enhance productivity, improve management, and unlock business value for organizations. My team was recognized as the World’s Best Microsoft Project and Portfolio Management Partner in 2020, a testament to our commitment to excellence.

📢 Community Leader & Educator:
For over 8 years, I have been intensely involved in the tech community, creating impactful content focused on driving innovation in technology, with a strong emphasis on Artificial Intelligence. Through these efforts, I’ve shared knowledge, empowered individuals, and contributed to the growth of professionals in this rapidly evolving field. My dedication has also led to teaching over 12,000 students and building a YouTube channel with 11,000+ subscribers.

🌍 Global Impact:
As an expert trainer, I’ve delivered sessions in 10+ countries, sharing insights and practical guidance on Microsoft technologies. My mission is to democratize technology and inspire others to innovate with tools like Copilot, AI Builder, Azure AI, and Power Platform.
A few highlights:
- CollabDays New England 2024 (United States)
- CollabDays Porto 2024 (Portugal)
- Directions EMEA 2024 (Austria)
- aMP Bordeaux 2024 (France)
- ColorCloud Hamburg 2025 (Germany)
- North America MCT Summit 2025 (United States)
- Power Platform Community Conference 2025 (United States)
- CollabDays Finland 2025 (Finland)
- CollabDays Madrid 2025 (Spain)
- Days of Knowledge Nordic 2025 (Denmark)
- ESPC Conference 2025 (Ireland)
- Cloud Tech Tallinn 2026 (Estonia)

6x Microsoft Most Valuable Professional (MVP) – Business Applications & Azure AI 4x Microsoft Certified Trainer (MCT) 🔧 Expertise & Experience: With over 11+ years of experience developing Microsoft 365 solutions and 8+ years of Power Platform ... Show more

Engin Diri

Engin Diri

As a Senior Solutions Architect at Pulumi with over 15 years of experience in the IT industry, including roles at the Schwarz Group and W&W Versicherungen, I bring extensive expertise with an end-user and enterprise focus. Currently working for a startup while collaborating with enterprise clients has further enriched my experience!

I began my career as a Java backend developer, transitioned to frontend development, and ultimately specialized in CI/CD and DevOps. Working with ANT and Cruise Control to switch to Jenkins and Microsoft Team Foundation Server added some traumas on top! But as they say, what doesn't kill you makes you stronger.

I have now embraced the dynamic world of DevOps and Platform Engineering, leveraging cloud technologies and Kubernetes.

Recently, I have been exploring AI to find ways to make myself redundant in the future.

As a Senior Solutions Architect at Pulumi with over 15 years of experience in the IT industry, including roles at the Schwarz Group and W&W Versicherungen, I bring extensive expertise with an end-user and enterprise focus. Currently working for a sta... Show more

Rajani Ekunde

Rajani Ekunde

Rajani is a skilled DevOps and SRE Engineer with over 4 years of experience, passionate about cloud technologies and modern DevOps practices. As a recognized Docker Captain and Women Techmakers (WTM) Ambassador, she actively contributes to the tech community through content creation, mentorship, and public speaking.
A prominent speaker at major cloud and DevOps conferences, Rajani engages global audiences on emerging technologies and real-world engineering practices. She shares her expertise on platforms like Medium and LinkedIn, aiming to educate and empower others in the DevOps space. Rajani finds fulfillment in mentoring aspiring engineers, inspiring professionals and students alike through her talks, articles, and community initiatives.

Rajani is a skilled DevOps and SRE Engineer with over 4 years of experience, passionate about cloud technologies and modern DevOps practices. As a recognized Docker Captain and Women Techmakers (WTM) Ambassador, she actively contributes to the tech c... 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

Javier Villegas

Javier Villegas

Javier Villegas is IT Director (DBA & BI Services) at Mediterranean Shipping Company with 30 years of experience working with SQL Server, Including Azure SQL.
His specialization is Administration, Performance Tuning, High Availability and Disaster Recovery.
Javier is a Microsoft MVP Data Platform since 2016 and MCT
He is a frequent speaker in technical conferences and events such as SQL Saturdays, PASS Virtual Groups, PASS Marathons, 24 Hours SQL PASS , vOpen , GroupBy , Data Saturdays and Azure Global Bootcamps.
He is one of the group leaders of SQL Argentina Community and former Microsoft Azure Data Advisory Board Member

Javier Villegas is IT Director (DBA & BI Services) at Mediterranean Shipping Company with 30 years of experience working with SQL Server, Including Azure SQL. His specialization is Administration, Performance Tuning, High Availability and Disaster ... 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.