Most Active Speakers 2025

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

  • 1125 speakers
  • Auto-generated
Roman Zhukov

Roman Zhukov

Roman is a cybersecurity expert, engineer, and leader with 20 years of hands-on experience securing complex systems and products at scale. Currently Principal Architect at Red Hat, he leads open-source security strategy, upstream collaboration, and cross-industry initiatives focused on building trusted ecosystems. He has built and scaled programs across security architecture, threat modeling, secure development, vulnerability management, incident response, and security education - for both engineers and senior leadership. His work spans trusted AI, privacy, compliance, and secure software supply chains. Previously, Roman led Product Security & Privacy for Data Center and AI software at Intel. He is a Security Champion for several open-source projects and an active contributor to working groups under the OpenSSF, Eclipse Foundation, and other global initiatives. He is an official member of CEN/CLC and ETSI standardization groups, contributing to the EU Cyber Resilience Act (CRA).

Roman is a cybersecurity expert, engineer, and leader with 20 years of hands-on experience securing complex systems and products at scale. Currently Principal Architect at Red Hat, he leads open-source security strategy, upstream collaboration, and c... Show more

Markus Kett

Markus Kett

Markus and his teams have been working on Java IDE and database tools, frameworks, as well as on various open-source projects for 20+ years. Markus is the CEO and founder of Cyrock.AI, Inc., which is the company behind the Eclipse open-source projects EclipseStore, Eclipse Serializer, and Eclipse Data Grid, powering Cyrock.AI as the first AI Memory based on a serverless microservices architecture. He is also the editor-in-chief for the free JAVAPRO magazine and the founder and co-organizer of the Java community conference series JCON. He is an independent editor for several magazines, and loves speaking at developer conferences and user groups around the world.

Markus and his teams have been working on Java IDE and database tools, frameworks, as well as on various open-source projects for 20+ years. Markus is the CEO and founder of Cyrock.AI, Inc., which is the company behind the Eclipse open-source project... Show more

Muhammad Samiullah

Muhammad Samiullah

Hi, I’m Muhammad Samiullah, a Solution Engineer and a Microsoft Most Valuable Professional (MVP) in Azure and Developer Technologies. I design and deliver secure, scalable cloud and AI solutions, with a focus on automation, cost optimization, and operational excellence, helping organizations maximize the value of their technology investments.

Previously a Microsoft for Startups Expert, I mentored founders on building and scaling solutions with Microsoft technologies and guided teams to leverage Artificial Intelligence (M365 & GitHub Copilot) for measurable business impact.

Beyond my professional work, I’m committed to community building. As a Gold Microsoft Student Ambassador and lead of the Microsoft Learn Student Community’s Karachi chapter, I have organized impactful events and initiatives that connect students with industry leaders and inspire the next generation of technology professionals.

My mission is to foster innovation, drive growth, and make technology accessible to both individuals and businesses aiming to scale and thrive in the digital age.

Hi, I’m Muhammad Samiullah, a Solution Engineer and a Microsoft Most Valuable Professional (MVP) in Azure and Developer Technologies. I design and deliver secure, scalable cloud and AI solutions, with a focus on automation, cost optimization, and ope... Show more

Aydin Mir Mohammadi

Aydin Mir Mohammadi

Aydin Mir Mohammadi, partner and architect at bluehands, has been creating software for more than twenty years. He specializes in the development of distributed complex business applications based on Microsoft technologies. His focus is on cloud migration, AI integration, software modernization, and twin transformation.

Aydin is co-initiator of the .NET User Group Karlsruhe, organizer of the Green Software Development Karlsruhe, Azure MVP, initiator of the CO2-Challenge, chair of the German Green Software Association and host of the #nossued Open Space. He is also involved in the training of young software developers as a lecturer at the Karlsruhe Cooperative State University.

Aydin Mir Mohammadi, partner and architect at bluehands, has been creating software for more than twenty years. He specializes in the development of distributed complex business applications based on Microsoft technologies. His focus is on cloud migr... Show more

Angela Velasco Perea

Angela Velasco Perea

Power Platform Developer

Power Platform Developer Show more

Christian Wenz

Christian Wenz

Christian Wenz is a consultant, software architect and entrepreneur specializing in web technologies and security. A prolific writer, he has authored or co-authored over 100 books for various publishers. Christian’s work spans both open-source and proprietary web technologies, a unique combination that has earned him recognition as a Microsoft MVP for Developer Technologies and the distinction of being the lead author of the Zend PHP certification. He is also credited in several open-source projects for his contributions. In addition to his writing and technical endeavors, Christian is a frequent speaker at developer conferences worldwide, where he shares his expertise in web technologies.

Christian Wenz is a consultant, software architect and entrepreneur specializing in web technologies and security. A prolific writer, he has authored or co-authored over 100 books for various publishers. Christian’s work spans both open-source and pr... Show more

Cathrine Bruvold

Cathrine Bruvold

Microsoft Business Applications MVP in Power Apps.

Power Platform enthusiast and solution architect with great passion for building and developing functional & aestethic Power Apps ✨

Microsoft Business Applications MVP in Power Apps. Power Platform enthusiast and solution architect with great passion for building and developing functional & aestethic Power Apps ✨ Show more

Ryan Schouten

Ryan Schouten

With a passion for technology that is matched only by his commitment to community engagement, Ryan Schouten stands out as a Microsoft Most Valuable Professional (MVP). Hailing from the vibrant tech scene of California, Ryan has carved a niche for himself as a thought leader and advocate for Microsoft Products & Services.

Ryan’s journey in the tech industry is marked by his eagerness to share knowledge and foster learning. His expertise spans across various Microsoft technologies, where he has contributed significantly through public speaking, content creation, and mentorship. His ability to demystify complex technical concepts and present them in an accessible manner has made him a beloved figure in the tech community.

At the core of Ryan’s philosophy is the belief that technology can be a force for good, driving innovation and solving real-world problems. He actively participates in community events where he shares insights and collaborates with other experts.

With a passion for technology that is matched only by his commitment to community engagement, Ryan Schouten stands out as a Microsoft Most Valuable Professional (MVP). Hailing from the vibrant tech scene of California, Ryan has carved a niche for him... Show more

Cristian Angyal

Cristian Angyal

Cristian is a “Project Management Professional turned into a Data Guy” working as a link between two worlds: Business and IT.
Having worked for the last 20+ years with data in different roles he was fascinated when he discovered Power Query and Power Pivot back in 2014 and then, Power BI in 2015.

He’s holding several Microsoft Certifications (MS Fabric Analytics Engineer, MS Fabric Data Engineer, Power BI Certified Data Analyst, Trainer (MCT), MCSE Data Management and Analytics, MCSA BI Reporting, MOS Master, Excel Expert, etc) and he loves getting insights from data and then, using these insight solving real business problems.

He is the founder of Romania Power BI and Modern Excel User Group (https://www.meetup.com/romaniapug/) and has been recognized as Microsoft Most Valuable Professional (MVP) in 2022.

Cristian is a “Project Management Professional turned into a Data Guy” working as a link between two worlds: Business and IT. Having worked for the last 20+ years with data in different roles he was fascinated when he discovered Power Query and Powe... Show more

Nilanjan Chatterjee

Nilanjan Chatterjee

I am Nilanjan Chatterjee , a seasoned Data Engineering leader and architect at AMD, with extensive experience in rolling out 0-1 turn-key products and features across Fintech, Semiconductor and Telecom domains. With over 12 years of experience across Data Engineering , Data Science and Gen AI pipeline and MLOps, I assist business operationalise their data and ML strategy and find data driven solutions to problems.

I am Nilanjan Chatterjee , a seasoned Data Engineering leader and architect at AMD, with extensive experience in rolling out 0-1 turn-key products and features across Fintech, Semiconductor and Telecom domains. With over 12 years of experience across... Show more

Cat Morris

Cat Morris

Cat is a Staff Product Manager at Syntasso, where she works at the intersection of developer experience, infrastructure strategy, and product design. With a background in enterprise platform tooling and developer productivity, she focuses on helping teams treat platforms as products that deliver measurable value. Cat brings experience from both engineering and product management roles in fast-scaling tech environments.

Cat is a Staff Product Manager at Syntasso, where she works at the intersection of developer experience, infrastructure strategy, and product design. With a background in enterprise platform tooling and developer productivity, she focuses on helping ... Show more

Sergey Chubarov

Sergey Chubarov

Sergey Chubarov is a Security and Cloud Expert with over 15 years of extensive experience in Microsoft technologies. As an instructor, Sergey is dedicated to guiding companies through the complexities of securely adopting cloud solutions. His consulting experience spans both the red and blue sides.

Certifications and recognitions include Microsoft MVP: Cloud Security, OSCP, OSEP, MCT, MCT Community Lead, EC Council CPENT & LPT, CREST CPSA & CRT, and many more.

Frequent Speaker at Prestigious Conferences: Black Hat, Hacker Halted, DEF CON, Wild West Hackin' Fest, Workplace Ninja Summit, Midwest Management Summit, and many others.

Prefers live demos and cyberattacks simulations.

Sergey Chubarov is a Security and Cloud Expert with over 15 years of extensive experience in Microsoft technologies. As an instructor, Sergey is dedicated to guiding companies through the complexities of securely adopting cloud solutions. His consult... Show more

Mathias Halkjaer

Mathias Halkjaer

Mathias is a data enthusiast with a great passion for the synergy between data analytics and cloud data platforms.

As a Senior Director at Inspari he works with building up clients' data capabilities, implementing data platform technologies and all-in-all maximize the impact of their data.

Being a Microsoft Data Platform MVP, he is very passionate about sharing anything with community, especially something around turning data into impact!

With a background in Product Development and Innovation, Mathias brings a unique 'Data Product' perspective to the realm of data architecture, and is obsessed with the bigger picture. With his slightly rebellious attitude, he's not afraid to challenge the status quo and break industry norms to find new and better solutions.

Mathias is a data enthusiast with a great passion for the synergy between data analytics and cloud data platforms. As a Senior Director at Inspari he works with building up clients' data capabilities, implementing data platform technologies and a... Show more

Pulkit Midha

Pulkit Midha

Pulkit Midha is a mobile developer and technical evangelist passionate about offline-first architecture, real-time sync, and intelligent client-side experiences. He has worked on cross-platform apps, AR/VR products, and AI-integrated systems. A GSoC alumnus and frequent hackathon winner, Pulkit is focused on building resilient mobile solutions and growing open developer communities.

Pulkit Midha is a mobile developer and technical evangelist passionate about offline-first architecture, real-time sync, and intelligent client-side experiences. He has worked on cross-platform apps, AR/VR products, and AI-integrated systems. A GSoC ... Show more

Rik Hepworth

Rik Hepworth

Rik helps organisations use Cloud better as CEO and co-founder of Zure UK. Whether that is a new adoption where governance and management are key, or an application modernisation project where technology choice and team knowledge are important factors in success.
Through his public speaking and community involvement, Rik is a recipient of the Microsoft MVP Programme award for his work with Azure. He is also proud to be a member of the Microsoft Regional Director Programme. As an event organiser, speaker and lapsed blogger, Rik is keen to share his knowledge with the community, and encourage and support others as they do the same.
His grey hair is an indication of how long he has worked in IT, and in that time he's done most things you'd expect of an IT Pro: From crawling under floors pulling cables, to managing large scale automated OS rollouts, to architecting solutions for on-premises and cloud. Now he spends more time working with his customers' management, sharing that breadth of experience and learning.

Rik helps organisations use Cloud better as CEO and co-founder of Zure UK. Whether that is a new adoption where governance and management are key, or an application modernisation project where technology choice and team knowledge are important factor... Show more

Alan Smith

Alan Smith

Alan Smith is a Cloud & AI Trainer, Mentor & Coach at Active Solution in Stockholm, Sweden. He has a strong hands-on philosophy and focusses on embracing the power and flexibility of cloud computing to deliver engaging and exciting demos and training courses.

Alan has held the MVP title since 2005, and is currently an AI MVP. He is in the organization team for the CloudBurst and AI Burst Conferences.

Alan Smith is a Cloud & AI Trainer, Mentor & Coach at Active Solution in Stockholm, Sweden. He has a strong hands-on philosophy and focusses on embracing the power and flexibility of cloud computing to deliver engaging and exciting demos and training... Show more

Kasam Shaikh

Kasam Shaikh

5X Microsoft MVP AI | Among first five AI MVP from INDIA |☁️ Cloud Evangelist at Capgemini| 🎙️Global AI Speaker | ✍️ Published Author | 👨‍💻 MS Docs Contributor | Founder of Dear Azure

5X Microsoft MVP AI | Among first five AI MVP from INDIA |☁️ Cloud Evangelist at Capgemini| 🎙️Global AI Speaker | ✍️ Published Author | 👨‍💻 MS Docs Contributor | Founder of Dear Azure Show more

Sankalp Kumar

Sankalp Kumar

With over 8 years of experience working with industry giants like McAfee, Juniper, and Fraunhofer, Sankalp has consistently been at the forefront of security innovation. He has expertise in building software systems that do intrusion detection and was one of the lead engineers in building McAfee’s IPS. Sankalp today leads efforts for scaling, improving network software stack and securing software systems.Sankalp is a leader in resiliency and reliability.

With over 8 years of experience working with industry giants like McAfee, Juniper, and Fraunhofer, Sankalp has consistently been at the forefront of security innovation. He has expertise in building software systems that do intrusion detection and wa... Show more

Aleksandar Nikolić

Aleksandar Nikolić

Aleksandar Nikolić is a Microsoft Azure MVP and a co-founder of PowerShellMagazine.com, the ultimate online source for PowerShell enthusiasts. As a Microsoft Azure Advisor, he provides valuable feedback and insights to the Azure engineering team. With over 18 years of experience in system administration, he is a trusted trainer and speaker who travels the globe to share his knowledge and skills on Azure and PowerShell. He has spoken at prestigious IT events such as Microsoft Ignite, ESPC, NIC, Techorama, PowerShell Conference Europe, NTK, and various others.
You can find him on Twitter (https://twitter.com/alexandair) and LinkedIn (http://www.linkedin.com/in/alexandair).

Aleksandar Nikolić is a Microsoft Azure MVP and a co-founder of PowerShellMagazine.com, the ultimate online source for PowerShell enthusiasts. As a Microsoft Azure Advisor, he provides valuable feedback and insights to the Azure engineering team. Wit... Show more

Alex Merced

Alex Merced

Alex Merced is Head of DevRel for Dremio and co-author of "Apache Iceberg: The definitive guide" from O'reilly and has worked as a developer and instructor for companies like GenEd Systems, Crossfield Digital, CampusGuard and General Assembly.
Alex is passionate about technology and has put out tech content on outlets such as blogs, videos and his podcasts Datanation and Web Dev 101. Alex Merced has contributed a variety of libraries in the Javascript & Python worlds including SencilloDB, CoquitoJS, dremio-simple-query and more.

Alex Merced is Head of DevRel for Dremio and co-author of "Apache Iceberg: The definitive guide" from O'reilly and has worked as a developer and instructor for companies like GenEd Systems, Crossfield Digital, CampusGuard and General Assembly. Alex ... Show more

Abdul Rasheed Feroz Khan

Abdul Rasheed Feroz Khan

Founder - CodeSizzler India | UAE
AI Engineer
9x Microsoft MVP on Azure
10x Microsoft Certified Trainer
Azure Cloud Advocate

Founder - CodeSizzler India | UAE AI Engineer 9x Microsoft MVP on Azure 10x Microsoft Certified Trainer Azure Cloud Advocate Show more

Stephanie Bruno

Stephanie Bruno

Stephanie is the co-founder and grand high witch at data-witches.com. She is a Microsoft Data Platform MVP who specializes in turning complex data into clear insights using Fabric and Power BI. Known for her practical, approachable style, she shares her expertise through blogging, GitHub tools, and speaking at conferences. She’s passionate about helping others grow their data skills and believes in the power of community and collaboration.

Stephanie is the co-founder and grand high witch at data-witches.com. She is a Microsoft Data Platform MVP who specializes in turning complex data into clear insights using Fabric and Power BI. Known for her practical, approachable style, she shares ... Show more

Jason Bell

Jason Bell

Jason Bell is a digital transformation leader with expertise in business architecture, emerging technologies, and guiding organizations through complex digital initiatives. With a background in both strategic vision and hands-on execution, he brings a unique blend of technical and business acumen, empowering teams to leverage cutting-edge solutions that drive efficiency and growth.

Jason Bell is a digital transformation leader with expertise in business architecture, emerging technologies, and guiding organizations through complex digital initiatives. With a background in both strategic vision and hands-on execution, he brings ... Show more

Sreekanth Takkalapalli

Sreekanth Takkalapalli

Cloud Infrastructure Specialist,
Focused on designing and securing scalable cloud solutions across Azure, AWS, and GCP. Expertise in network/cloud security (VMware NSX, SIEM) and virtualization (VMware, Citrix) to drive resilient and efficient IT environments.

Cloud Infrastructure Specialist, Focused on designing and securing scalable cloud solutions across Azure, AWS, and GCP. Expertise in network/cloud security (VMware NSX, SIEM) and virtualization (VMware, Citrix) to drive resilient and efficient IT en... 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

Alyssa Nicoll

Alyssa Nicoll

Alyssa is an Senior Developer Advocate for Progress and a Google Developer Expert for Angular. She has spoken at over 50 conferences locally and internationally. She is the host of the Angular Air podcast and emcees ng-conf as well as Monorepo World. She enjoys gaming, scuba diving, and has a little one that fondly goes by "Mr. Milks".

Alyssa is an Senior Developer Advocate for Progress and a Google Developer Expert for Angular. She has spoken at over 50 conferences locally and internationally. She is the host of the Angular Air podcast and emcees ng-conf as well as Monorepo World.... Show more

Brian Contos

Brian Contos

With two IPOs and nine acquisitions, Brian has contributed to the development and scale of several of the most influential cybersecurity companies globally. He brings more than 30 years of experience across the security sector as an entrepreneur, board advisor, investor, and author. Brian began his career with the Defense Information Systems Agency (DISA) and later at Bell Labs, before moving into the private sector to build and scale security startups. He has held leadership roles in companies that achieved significant liquidity events, including ArcSight, Imperva, McAfee, Cylance, and Mandiant. He has worked in more than 60 countries across six continents, advising enterprises and governments on cyber risk, adversary operations, and defensive strategy. Brian is the author of Enemy at the Water Cooler and co-author of Physical & Logical Security Convergence with William Crowell, former Deputy Director of the NSA. He was featured in the cyberwar documentary 5 Eyes alongside General Michael Hayden, former Director of the CIA. Brian is a contributor to Forbes and regularly speaks at industry conferences including Black Hat and RSA.

With two IPOs and nine acquisitions, Brian has contributed to the development and scale of several of the most influential cybersecurity companies globally. He brings more than 30 years of experience across the security sector as an entrepreneur, boa... Show more

Catalin Gheorghiu

Catalin Gheorghiu

Catalin Gheorghiu is a solution architect from Timisoara Romania. The current interests are in the area of (I)IoT, industrial mobile and cloud solutions. In addition to addressing the software development and architecture, is a trainer and consultant. In his spare time is member of the technical community, contributing with articles and blogs (signed MrSmersh), presentations to several user groups/meetups (also is RONUA Timisoara user group leader), and lecturing all over Romania and abroad.
Since 2011, every year he was awarded the Microsoft MVP Award. Is also a current holder of the Intel Software Innovator Award. Is a current Microsoft Certified Trainer.

Catalin Gheorghiu is a solution architect from Timisoara Romania. The current interests are in the area of (I)IoT, industrial mobile and cloud solutions. In addition to addressing the software development and architecture, is a trainer and consultant... Show more

Christian Glessner

Christian Glessner

Christian Glessner is the founder of Hololux, an innovation agency at the intersection of artificial intelligence and immersive technology.

As a 17-year Microsoft Most Valuable Professional (MVP) and early contributor to Microsoft’s new Agent Framework, he explores how multi-agent orchestration and graph intelligence are shaping the future of enterprise automation.

A German Innovation Award 2024 winner, Christian bridges advanced AI concepts with real-world business impact.

Known for his energetic, demo-driven presentations, he makes complex agent architectures tangible and inspires teams to build smarter, connected systems.

Christian Glessner is the founder of Hololux, an innovation agency at the intersection of artificial intelligence and immersive technology. As a 17-year Microsoft Most Valuable Professional (MVP) and early contributor to Microsoft’s new Agent Fram... Show more

David Amorín García

David Amorín García

Me llamo David Amorin Garcia, tengo 32 años y me dedico a la comunicación desde los 15. Como amante de las tecnologías y de transmitir conocimiento, me gradué en Teatro a la par que me formaba en aspectos relacionados con el SEO y los datos. Aproveché durante varios años la ventana que me ofrecía YouTube y Twitch para mostrar las aptitudes que iba adquiriendo y compartirlas con la audiencia. A principios de 2022 decidí entrar en el mundo empresarial para aportar todo lo que había aprendido durante todos estos años y así poder ayudar a los demás.

Me llamo David Amorin Garcia, tengo 32 años y me dedico a la comunicación desde los 15. Como amante de las tecnologías y de transmitir conocimiento, me gradué en Teatro a la par que me formaba en aspectos relacionados con el SEO y los datos. Aprovech... 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.