Most Active Speakers 2025

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

  • 1123 speakers
  • Auto-generated
Christopher Schmidt

Christopher Schmidt

Christopher Schmidt is a Principal Program Manager with deep expertise in real-time data systems, specializing in message streaming and event-driven architectures. At the forefront of Microsoft’s efforts in modern data platforms, Christopher has led initiatives that transform how organizations harness streaming data for intelligent, scalable decision-making. His work spans resilient, low-latency pipelines to AI-led consumption technologies. 

Christopher Schmidt is a Principal Program Manager with deep expertise in real-time data systems, specializing in message streaming and event-driven architectures. At the forefront of Microsoft’s efforts in modern data platforms, Christopher has led ... Show more

Daniel Sogl

Daniel Sogl

Daniel Sogl is a Principal Consultant at Thinktecture AG and a Microsoft MVP for Developer Technologies – Web Development.
He helps companies design and implement complex web applications, with a strong focus on modern web technologies with Angular as well as Generative AI and AI-assisted software development.

Knowledge sharing is one of his core passions – as a speaker, trainer, and author, he regularly contributes to conferences, workshops, and publications. His mission is to foster technical excellence and empower teams to build sustainable, future-proof software solutions.

Daniel Sogl is a Principal Consultant at Thinktecture AG and a Microsoft MVP for Developer Technologies – Web Development. He helps companies design and implement complex web applications, with a strong focus on modern web technologies with Angular ... Show more

Cody Zuschlag

Cody Zuschlag

With a clear focus on open-source solutions, Cody is deeply committed to shaping technology for the greater good. Since embarking on the international speaking circuit in 2022, Cody has championed the benefits of full-stack and decentralized applications, underscoring the significance of open-source technologies. Through his work, presentations, and teaching at the university, he constantly seeks ways to use technology as a tool for fostering social interactions and driving positive societal change.

With a clear focus on open-source solutions, Cody is deeply committed to shaping technology for the greater good. Since embarking on the international speaking circuit in 2022, Cody has championed the benefits of full-stack and decentralized applicat... Show more

Vjekoslav Babic

Vjekoslav Babic

Vjekoslav Babić (Vjeko) is a Business Central architect, developer, trainer, author and blogger with over three decades of IT experience, two of which have been spent in the Business Central ecosystem.

His passion lies in web and mobile technologies, but deep down he's an incurable hacker who loves writing code and breaking things apart to see how they work.

As a frequent conference speaker and blogger, Vjeko pushes the boundaries of what's possible, connecting Business Central with anything that can be plugged into it through obscure loopholes or undocumented interfaces, especially when they're not meant to be used that way. In his view, nothing is really meant for any particular purpose, and figuring out how to make things useful beyond their intended design is the meaning of life.

Since 2010, Vjeko has been awarded the Microsoft Dynamics NAV MVP. You can find him at his blog "Vjeko.com - ideas in the cloud".

Vjekoslav Babić (Vjeko) is a Business Central architect, developer, trainer, author and blogger with over three decades of IT experience, two of which have been spent in the Business Central ecosystem. His passion lies in web and mobile technologi... Show more

Cristina Tarabini-Castellani Ciordia

Cristina Tarabini-Castellani Ciordia

Ingeniera Informática, especializada en SQL Server. Mas de 12 años modelando, desarrollando, administrando y optimizando bases de datos en un entorno en el que la información debe de llegar en el menor tiempo posible.

Ingeniera Informática, especializada en SQL Server. Mas de 12 años modelando, desarrollando, administrando y optimizando bases de datos en un entorno en el que la información debe de llegar en el menor tiempo posible. Show more

Julien Salvi

Julien Salvi

With over a decade in the Android world, I’ve lived the fast-paced startup life in California before returning to France. Today, I’m leading and managing the Android team at Aircall, where we're building the best phone system for modern businesses.

Beyond Android, I’m passionate about backend development with Kotlin and exploring the possibilities of AR/VR. In 2021, I was honored to become an Android GDE—continuing my mission to share knowledge and grow alongside the amazing Android community.

Outside of work, you’ll find me traveling the globe or on the hunt for the perfect IPA.

With over a decade in the Android world, I’ve lived the fast-paced startup life in California before returning to France. Today, I’m leading and managing the Android team at Aircall, where we're building the best phone system for modern businesses. ... Show more

Camillo Bucciarelli

Camillo Bucciarelli

Passionate about technology work in the IT industry since 2015. From Android through the web to Flutter helps companies to get their target.

Passionate about technology work in the IT industry since 2015. From Android through the web to Flutter helps companies to get their target. Show more

Esther Barthel

Esther Barthel

Esther Barthel has worked in different roles and functions as an IT consultant after she finished her Master’s degree in Computer Science in 1997. She soon discovered that End User Computing combined servers, desktops, and user experience technologies into one and specialized in virtualization solutions, like Microsoft Remote Desktop Services, Citrix Virtual Apps & Desktops and Azure Virtual Desktops

Esther works as a Senior Solutions Architect at cognition IT, where she combines her passion for designing and implementing End User Computing (EUC) solutions with her love for DevOps, using Infrastructure-as-Code, PowerShell scripting, REST APIs, and JSON payloads for process automation of managing infrastructure focused resources (both on-premises and Cloud).

Ever since she hosted introduction days for technical female student candidates Esther has shared her passion and knowledge for IT. She has also been a strong advocate of diversity and inclusion as one of the founders of the CUGC Women in Tech mentorship program.

In addition to her Microsoft Most Valuable Professional (MVP) award, Esther is also awarded as a Nerdio Valued Professional (NVP), and Parallels VIPP.

Esther Barthel has worked in different roles and functions as an IT consultant after she finished her Master’s degree in Computer Science in 1997. She soon discovered that End User Computing combined servers, desktops, and user experience technologie... Show more

Vincent Caldeira

Vincent Caldeira

Vincent Caldeira, Red Hat APAC CTO and Industry Visiting Scholar at Columbia University, drives tech strategy and emerging engineering. A Top 10 APAC CTO (2023) with 20+ years in finance IT, he is an authority on open source, cloud-native technologies and AI. Vincent holds leadership roles across the Linux Foundation (FINOS, LF AI & Data) and GSF, championing AI safety, sustainability, and digital sovereignty.

Vincent Caldeira, Red Hat APAC CTO and Industry Visiting Scholar at Columbia University, drives tech strategy and emerging engineering. A Top 10 APAC CTO (2023) with 20+ years in finance IT, he is an authority on open source, cloud-native technologie... Show more

Marcin Siewnicki

Marcin Siewnicki

I am Microsoft 365 solution architect. I create applications and solutions that improve and facilitate work using Power Platform, SharePoint, and Teams.

My adventure in IT began in 2005. Since then I have been creating and implementing business applications based on SharePoint and Microsoft 365 platforms. I am a big fan of task and process automation (Power Automate) and Modern Workplace platforms (Microsoft Teams).

Privately a husband, father of 2 sons. Fan of science fiction and cyberpunk, futurist. I co-organize the SharePoint Saturday Warsaw conference and speak at Microsoft's community events.

I am Microsoft 365 solution architect. I create applications and solutions that improve and facilitate work using Power Platform, SharePoint, and Teams. My adventure in IT began in 2005. Since then I have been creating and implementing business ap... Show more

Erwin Staal

Erwin Staal

I am a Tech Lead and Azure Solution Architect from the Netherlands, with over a decade of experience spanning startups, enterprise organizations, and international teams. I thrive at the intersection of technology, strategy, and leadership, helping companies deliver software to customers using DevOps practices and Cloud-Native architectures.

Being on the line between IT and business is where I feel most at home—creating technical solutions that address real user needs while driving teams toward success. I enjoy coaching and leading teams to embrace new technologies and ways of working, fostering collaboration and continuous improvement.

Outside of my work for clients, I have a passion for sharing knowledge. I am a co-author of Azure Infrastructure as Code (https://www.manning.com/books/azure-infrastructure-as-code), occasionally write blogs, and regularly speak at international conferences.

I am a Tech Lead and Azure Solution Architect from the Netherlands, with over a decade of experience spanning startups, enterprise organizations, and international teams. I thrive at the intersection of technology, strategy, and leadership, helping c... Show more

Clarissa Rodrigues

Clarissa Rodrigues

Clarissa Rodrigues is graduated by University of Vale dos Sinos (UNISINOS), specialist in Software Engineering by Federal University of Rio Grande do Sul (UFRGS) and master student in Applied Computing by UNISINOS. With more than 10 years of IT experience, she has been working in different roles and companies, such as a Business Analyst at SISPRO, ADP, SAP and most current Technical Quality & Program Manager at Uber. On her journey, she has been advocated for quality inside QAs work to make sure goods and services are designed, developed, and made to meet or exceed customers’ expectations and requirements.

Clarissa Rodrigues is graduated by University of Vale dos Sinos (UNISINOS), specialist in Software Engineering by Federal University of Rio Grande do Sul (UFRGS) and master student in Applied Computing by UNISINOS. With more than 10 years of IT exper... Show more

Courtney Yatteau

Courtney Yatteau

Courtney Yatteau is a Developer Advocate on Esri's Developer Experience Team, where she helps developers build better web applications with modern JavaScript tools, libraries, and mapping technology. Before Esri, she taught computer science and mathematics, which shaped her approach to making technical concepts clear, approachable, and visual.

Courtney Yatteau is a Developer Advocate on Esri's Developer Experience Team, where she helps developers build better web applications with modern JavaScript tools, libraries, and mapping technology. Before Esri, she taught computer science and mathe... Show more

Emmz Rendle

Emmz Rendle

Rendle is the CTO of XRAI, on a mission to subtitle and translate real life using AI and mixed reality. When it comes to programming they are obsessed with maximizing performance and minimizing complexity. When it comes to speaking, they combine 40 years experience in tech with skills acquired as a professional stand-up comic in the 90s to deliver entertaining and informative talks at conferences around the world. They recently learned to play bass so they could join tech parody band The LineBreakers and promptly became obsessed with that, too.

Rendle is the CTO of XRAI, on a mission to subtitle and translate real life using AI and mixed reality. When it comes to programming they are obsessed with maximizing performance and minimizing complexity. When it comes to speaking, they combine 40 y... Show more

Keith Atherton

Keith Atherton

Power Platform Solution Architect, Microsoft MVP for Business Applications, Microsoft Certified Trainer (MCT), 11x Microsoft certified, published LinkedIn Learning instructor, public speaker, Power Platform Community High Five user group founder, On Air in the Cloud podcast host, blogger, and mentor.

Versatile solution architect with over 25 years' international experience of leading and developing software solutions in permanent and contract roles for sectors including finance, legal, manufacturing, construction, game development, retail, healthcare, travel, and charity.

Find me online: https://linktr.ee/keithatherton

Power Platform Solution Architect, Microsoft MVP for Business Applications, Microsoft Certified Trainer (MCT), 11x Microsoft certified, published LinkedIn Learning instructor, public speaker, Power Platform Community High Five user group founder, On ... Show more

Dan Bergh Johnsson

Dan Bergh Johnsson

Dan Bergh Johnsson works at the intersection of software architecture, security, and large-scale system design. He has decades of experience designing and reviewing complex systems where security, stability, and delivery speed are in constant tension.
Dan is co-author of Secure by Design (Manning) and a frequent international conference speaker. His talks focus on how architectural and design choices — increasingly involving AI — shape long-term security, system behavior, and organizational responsibility. He is particularly interested in what gets lost when productivity increases faster than system understanding.

Dan Bergh Johnsson works at the intersection of software architecture, security, and large-scale system design. He has decades of experience designing and reviewing complex systems where security, stability, and delivery speed are in constant tensio... Show more

Kay Sauter

Kay Sauter

Kay Sauter has been working with SQL Server since 2013. His expertise covers SQL Server, Azure, Data Visualization, and Power BI. He is a Microsoft Data Platform MVP.

Kay blogs on kayondata.com and is actively involved in various community projects like Data TGIF, databash.live, data-conference.ch, and Data Platform Data Platform DEI Virtual Group. Being deaf himself, he is an advocate for people with handicaps and accessibility for any conference.

He is based in Zurich, Switzerland and in his free time, together with his wife, he loves to travel to learn from other cultures and perspectives.

Kay Sauter has been working with SQL Server since 2013. His expertise covers SQL Server, Azure, Data Visualization, and Power BI. He is a Microsoft Data Platform MVP. Kay blogs on kayondata.com and is actively involved in various community project... Show more

Marcus Noble

Marcus Noble

Marcus is a platform engineer at Monzo, a UK based bank committed to making money work for everyone, helping build their infrastructure platform. His main area of focus in recent years has been around Go, Kubernetes, containers and DevOps but originally started out as a web developer and JavaScript enthusiast. A self-described “tinkerer”, when not building Kubernetes solutions, Marcus likes to dabble with 3D printing and experimenting with smart home tech.

Marcus is a platform engineer at Monzo, a UK based bank committed to making money work for everyone, helping build their infrastructure platform. His main area of focus in recent years has been around Go, Kubernetes, containers and DevOps but origina... Show more

Himanshu Singh

Himanshu Singh

Himanshu is a Full Stack Kotlin Engineer specializing in Android development. Recognized as a Google Developer Expert (GDE) for Android, he is an active speaker and content creator. Passionate about community building, Himanshu loves mentoring aspiring developers and helping them transition into the tech world.

Himanshu is a Full Stack Kotlin Engineer specializing in Android development. Recognized as a Google Developer Expert (GDE) for Android, he is an active speaker and content creator. Passionate about community building, Himanshu loves mentoring aspiri... Show more

Dubravko Bogović

Dubravko Bogović

I am an electrical engineer turned programmer. I love new technologies, smart homes and renewable energy as well as Science Fiction and fantasy and board games. I love making quizzes for conventions and playing board game tournaments or just attending a game day.
Also love badminton and everything related to it.

I am an electrical engineer turned programmer. I love new technologies, smart homes and renewable energy as well as Science Fiction and fantasy and board games. I love making quizzes for conventions and playing board game tournaments or just attendin... Show more

Saurav Jain

Saurav Jain

Saurav Jain, Apify's Developer Community Manager, excels in community building and devrel. With a history of growing Amplication's community to 40K, he now enhances Apify's developer engagement. An international speaker, he has contributed to PyCon Ireland, PyCon Italy, and more. His work bridges developers globally, fostering innovation and collaboration within the tech ecosystem. His expertise and passion for technology make him a pivotal figure in nurturing tech communities.

Saurav Jain, Apify's Developer Community Manager, excels in community building and devrel. With a history of growing Amplication's community to 40K, he now enhances Apify's developer engagement. An international speaker, he has contributed to PyCon I... Show more

Connell Sharp

Connell Sharp

After falling in love with coding in 2005, Connell became a fan of software architecture and design, and now spends a lot of time drawing boxes and arrows to help visualise concepts.

This led to the creation of his YouTube channel @DrawingBoxes, which establishes a simple animated visual presentation style shared by his talks and blog.

Always an advocate for developer communities, he co-organises the .NET Notts meetup, and now works at Stack Overflow where he continuously improves the site enabling communities worldwide.

After falling in love with coding in 2005, Connell became a fan of software architecture and design, and now spends a lot of time drawing boxes and arrows to help visualise concepts. This led to the creation of his YouTube channel @DrawingBoxes, w... Show more

Ambesh Singh

Ambesh Singh

I am a Father, International Speaker, Software Engineer, and Architect at Visionet Deutschland GmbH, currently living in Germany. My interests range from technology to travel. I am also interested in coaching, entrepreneurship, reading, vlogging and programming.

I am a Father, International Speaker, Software Engineer, and Architect at Visionet Deutschland GmbH, currently living in Germany. My interests range from technology to travel. I am also interested in coaching, entrepreneurship, reading, vlogging and ... Show more

Nacho Cardenal

Nacho Cardenal

With more than 25 years of experience in the world of data and, especially in the automation of processes to guarantee the availability of information following the quality and defined standards.

In my career I have been able to give free rein to two of my passions. The first, lead the transformation of teams and work models, based on the automation of processes.
The second, to share and disseminate my knowledge and experiences, about the world of data, and specifically, regarding the integration of systems, analysis and visualization of information.

With more than 25 years of experience in the world of data and, especially in the automation of processes to guarantee the availability of information following the quality and defined standards. In my career I have been able to give free rein to ... Show more

Bernat Agulló

Bernat Agulló

Passionate about Power BI in general and DAX in particular.
Based in Barcelona, I speak Catalan, Spanish, English, Japanese and some German.

Passionate about Power BI in general and DAX in particular. Based in Barcelona, I speak Catalan, Spanish, English, Japanese and some German. 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

Fabio Bonolo

Fabio Bonolo

🚀 #FutureofModernWork - The future starts now!

👋🏻 Ciao! I'm Fabio, Microsoft MVP in the M365 Copilot category, Teamleader Productivity at redIT Switzerland, speaker and passionate community enthusiast with a clear goal: empowering people to actively shape the future of work with Microsoft 365 and Copilot. ✨

🎯 My mission
I support my network with practical insights and valuable knowledge about Microsoft 365 Copilot - so that you can extend your digital knowledge. It's not just about technology. It's about empowerment. Perspectives. The future. 🎯

🚀 #FutureofModernWork - The future starts now! 👋🏻 Ciao! I'm Fabio, Microsoft MVP in the M365 Copilot category, Teamleader Productivity at redIT Switzerland, speaker and passionate community enthusiast with a clear goal: empowering people to act... Show more

Zaid Zaim

Zaid Zaim

As a Developer Advocate at Neo4j, I help developers harness the power of graph technology and AI. A Microsoft MVP and global speaker at events like TED, Microsoft Build, and WeAreDevelopers, I focus on making complex tech accessible through content, community, and hands-on support. My mission is to connect, empower, and inspire developers to build impactful solutions.

As a Developer Advocate at Neo4j, I help developers harness the power of graph technology and AI. A Microsoft MVP and global speaker at events like TED, Microsoft Build, and WeAreDevelopers, I focus on making complex tech accessible through content, ... Show more

Cedric Clyburn

Cedric Clyburn

Cedric Clyburn (@cedricclyburn), Senior Developer Advocate at Red Hat, is an enthusiastic software developer with a background in Kubernetes, DevOps, and container tools. Focused on open-source software, he both contributes (e.g., Podman, vLLM) and enjoys speaking, with prior experience at Devoxx, WeAreDevelopers, The Linux Foundation, and more. Cedric also spends (too much) time creating video and written content helping developers learn new topics in emerging technologies, with over 2M+ views online. He’s based in New York City and is an organizer of the local Kubernetes Community Day.

Cedric Clyburn (@cedricclyburn), Senior Developer Advocate at Red Hat, is an enthusiastic software developer with a background in Kubernetes, DevOps, and container tools. Focused on open-source software, he both contributes (e.g., Podman, vLLM) and e... Show more

John Kerski

John Kerski

John leverages his 10+ years of technical and government leadership experience to help Federal Agencies, and private sector clients utilize Microsoft products to their fullest potential. His certifications with Microsoft products offers customers a high rate of return when looking to invest in Microsoft solutions.

John leverages his 10+ years of technical and government leadership experience to help Federal Agencies, and private sector clients utilize Microsoft products to their fullest potential. His certifications with Microsoft products offers customers a h... 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.