Most Active Speakers 2025

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

  • 1126 speakers
  • Auto-generated
Mary Grygleski

Mary Grygleski

Mary is a Technical Solutions Architect and Advocate in the Emerging Technology area. She started as an engineer in Unix/C, then transitioned to Java around 2000 and has never looked back since then. After 20+ years of being a software engineer and technical architect, she discovered her true passion in developer and customer advocacy. Most recently she has serviced companies of various sizes such as IBM, US Cellular, Bank of America, Chicago Mercantile Exchange, in topic areas that included Java, GenAI, Streaming systems, Open source, Cloud and Distributed messaging systems. She is also a very active tech community leader outside of her day job. She is the President of the Chicago Java Users Group (CJUG), and the Chicago Organizer of the AI Collective Chicago Chapter.

Mary is a Technical Solutions Architect and Advocate in the Emerging Technology area. She started as an engineer in Unix/C, then transitioned to Java around 2000 and has never looked back since then. After 20+ years of being a software engineer and... Show more

Charles Lakes II

Charles Lakes II

Charles is a technical speaker and low-code advocate with a pro-code background, specializing in transforming business data architecture. With a passion for innovation, he shares his expertise to solve complex business problems and guide organizations in reimagining their legacy processes, advancing automation initiatives, streamlining operations, and reducing infrastructure costs.

| Software Engineer Plus Ultra | Middle-child | Soufside

Charles is a technical speaker and low-code advocate with a pro-code background, specializing in transforming business data architecture. With a passion for innovation, he shares his expertise to solve complex business problems and guide organization... Show more

David Lorenzo

David Lorenzo

Since 2010 delivering value in the Microsoft ecosystem: .NET web development, designing and building solutions in Azure. Since 2021, more focused in the Power Platform and Artifical Intelligence world.

Since 2010 delivering value in the Microsoft ecosystem: .NET web development, designing and building solutions in Azure. Since 2021, more focused in the Power Platform and Artifical Intelligence world. Show more

Sasha Denisov

Sasha Denisov

Sasha is CTO at Brainform.ai with over 20 years of experience architecting scalable enterprise systems. With a strong engineering background, his expertise spans frontend, backend, cloud infrastructure, mobile development, and AI — from cloud-based generative AI to on-device solutions. He specializes in building robust, production-ready products using a variety of technologies and frameworks. Sasha has delivered solutions across fintech, digital media, and entertainment. He is a Google Developer Expert for Cloud, AI, Firebase, Flutter, and Dart, co-organizes the Flutter Berlin Community, and is a recognized international speaker and writer, having presented at 30+ conferences worldwide.

Sasha is CTO at Brainform.ai with over 20 years of experience architecting scalable enterprise systems. With a strong engineering background, his expertise spans frontend, backend, cloud infrastructure, mobile development, and AI — from cloud-based g... Show more

Fabian Bader

Fabian Bader

Fabian Bader is a Cyber Security Architect and Microsoft MVP from Germany. His main focus is on security research and cloud security solutions and he works mainly with Microsoft technologies. From the cloud to on-premises he loves to automate stuff with PowerShell.

Besides being a speaker at conferences and community events, he blogs at "cloudbrothers.info" and hosts "Purple Elbe Security User Group" and "Hamburg PowerShell User Group".

❤️ PowerShell and Security 🛡️

Fabian Bader is a Cyber Security Architect and Microsoft MVP from Germany. His main focus is on security research and cloud security solutions and he works mainly with Microsoft technologies. From the cloud to on-premises he loves to automate stuff w... Show more

Marco Dal Pino

Marco Dal Pino

Marco Dal Pino is working in IT for more than 30 years as Developer, Team Leader, PM and Cloud Architect.
He mostly experienced Microsoft dev Platforms around .NET, for LOB, Desktop, Mobile and embedded apps.
He is a Microsoft Certified Trainer and a Speaker at the main technical conferences all around the world.
He is part of the staff of DotNetToscana a community focused on Microsoft technologies.
He received many awards from IT companies as independent Advisor like:
Microsoft MVP, Intel BlackBelt & Innovator, Nokia DevChamp, Hackster Live Ambassador
He works in Microsoft as a Senior Technical Consultant.

Marco Dal Pino is working in IT for more than 30 years as Developer, Team Leader, PM and Cloud Architect. He mostly experienced Microsoft dev Platforms around .NET, for LOB, Desktop, Mobile and embedded apps. He is a Microsoft Certified Trainer and... Show more

Jonathan "J." Tower

Jonathan "J." Tower

Jonathan, or J. as he's known to friends, is a founding partner of Trailhead Technology Partners, a custom software consulting company with employees across the U.S., Europe, and South America. He is Vice President of the .NET Foundation, a 13-time recipient of the Microsoft MVP award for his expertise with .NET and AI, and a frequent speaker at software conferences around the world. He doesn’t mind the travel, though, as it allows him to share what he's been learning and also gives him the chance to visit beautiful places like national parks—one of his passions. So far, he's visited 58 of the 63 U.S. national parks.

J. is also passionate about building the software community. Over the years, he has served on several non-profit boards, including more than a decade as president of the board for Beer City Code, Western Michigan's largest professional software conference. Outside of work, J. enjoys hiking, reading, photography, and watching all the Best Picture nominees before the Oscars ceremony each year.

Jonathan, or J. as he's known to friends, is a founding partner of Trailhead Technology Partners, a custom software consulting company with employees across the U.S., Europe, and South America. He is Vice President of the .NET Foundation, a 13-time r... Show more

Alan Smith

Alan Smith

Alan Smith is a Cloud & AI Trainer, Mentor & Coach at Evidi 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 Evidi 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. ... Show more

Giorgio Galassi

Giorgio Galassi

Senior Frontend Engineer with 10+ years of experience building large-scale, production-grade web applications. Specialized in Angular, TypeScript, NgRx, RxJS, and Nx, with a strong focus on component architecture, state management, micro-frontend patterns, and modular monorepos.

Most of my career has been spent in complex, multi-team environments where scalability and maintainability aren't optional. I think about frontend not just as UI delivery, but as a platform: shared libraries, design systems, DX tooling, and architecture that lets teams move fast without breaking each other's work.

Beyond code, I care deeply about the developer community. I'm co-founder of GDG Roma Città and co-organizer of NgRome. I write regularly on Angular topics and speak at conferences across Italy and Europe.

Senior Frontend Engineer with 10+ years of experience building large-scale, production-grade web applications. Specialized in Angular, TypeScript, NgRx, RxJS, and Nx, with a strong focus on component architecture, state management, micro-frontend pat... 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, padel and an obsession with Lego!

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

Fabrizio Sgura

Fabrizio Sgura

I started programming at 12, cutting my teeth on Basic and Assembler for Sinclair and Commodore machines back in the 80s, a foundation that's stuck with me ever since. Today I'm a Docker Captain, Golden Kubestronaut and CNCF Ambassador, AI dedicated and still an insatiable learner, drawn to scalability, flexibility, and the hard problems of transformation at scale. Innovation is my belief! My job is my favorite game, and there's no such thing as a break.

I started programming at 12, cutting my teeth on Basic and Assembler for Sinclair and Commodore machines back in the 80s, a foundation that's stuck with me ever since. Today I'm a Docker Captain, Golden Kubestronaut and CNCF Ambassador, AI dedicated ... Show more

Nikita Verma

Nikita Verma

Nikita Verma is an active contributor to the open-source community with a strong focus on Kubernetes and cloud-native technologies. She worked on developing forest growth simulations, automating configuration generation, and integrating CI/CD workflows. Nikita has volunteered at KubeCon events, showcasing her commitment to the Kubernetes ecosystem. Her technical expertise spans Python, Golang, AWS, and FLINT.Cloud, complemented by her contributions to initiatives like Girlscript Summer of Code

Nikita Verma is an active contributor to the open-source community with a strong focus on Kubernetes and cloud-native technologies. She worked on developing forest growth simulations, automating configuration generation, and integrating CI/CD workflo... Show more

Laila Bougria

Laila Bougria

Laila Bougria is a Solutions Architect and Engineer with over two decades of industry experience. She's a keynote speaker, a Microsoft MVP in Azure and Developer Technologies, and frequently shares her knowledge and insights at conferences worldwide. Currently, Laila is busy building NServiceBus at Particular Software and solving distributed riddles. She specializes in event-driven systems and is passionate about critical thinking. When she's not immersed in complex problems or code, Laila enjoys indulging in her favorite pastime - knitting! She finds that tangling the yarn into beautiful patterns helps untangle her thoughts.

Laila Bougria is a Solutions Architect and Engineer with over two decades of industry experience. She's a keynote speaker, a Microsoft MVP in Azure and Developer Technologies, and frequently shares her knowledge and insights at conferences worldwide.... Show more

Tatu Seppälä

Tatu Seppälä

Lifetime learner. Deep experience in consultancy, advisory and architectural roles in the Microsoft cloud tech space.

Lifetime learner. Deep experience in consultancy, advisory and architectural roles in the Microsoft cloud tech space. Show more

Jason Romans

Jason Romans

Jason Romans is a Microsoft MVP and data platform engineer based in Nashville, TN, specializing in Microsoft Fabric, Power BI, and SQL Server. He started his career as a DBA before finding his passion in business intelligence and data modeling, and has since become a regular conference speaker at events including SQLBits, PASS Summit, and FabCon. He first found PowerShell at user group meetings more than a decade ago and keeps coming back to it — lately to automate the parts of Fabric administration that don't scale by hand. His sessions focus on practical, real-world application — things you can use the moment you're back at your desk. His first computer was a Commodore 64, and he's been hooked ever since.

Jason Romans is a Microsoft MVP and data platform engineer based in Nashville, TN, specializing in Microsoft Fabric, Power BI, and SQL Server. He started his career as a DBA before finding his passion in business intelligence and data modeling, and h... Show more

Jamel Abed

Jamel Abed

Jamel Abed is a Microsoft MVP in Microsoft 365 Development and SharePoint, Senior Developer Advocate, and International Speaker with over 17 years of experience in architecting, building, and migrating enterprise-scale solutions.

He has successfully delivered projects across multiple industries, including Banking, Finance, Energy, Insurance, Healthcare, Aerospace, Defense, and Government, leveraging the full power of Microsoft 365, SharePoint, Power Platform, Azure, and SharePoint Embedded.

As a Solutions Architect and Developer Advocate, Jamel is passionate about empowering developers, promoting clean code, and driving product adoption. He specializes in designing end-to-end solutions across the Microsoft ecosystem, transforming complex business requirements into secure, scalable, and efficient technology solutions.

Ranked #1 Global Speaker on CommunityDays.org, Jamel regularly speaks at international conferences on topics such as SharePoint Embedded, AI integration, and cost optimization for data management. He is also a community leader and mentor, dedicated to fostering innovation and collaboration within the global tech community.

Jamel Abed is a Microsoft MVP in Microsoft 365 Development and SharePoint, Senior Developer Advocate, and International Speaker with over 17 years of experience in architecting, building, and migrating enterprise-scale solutions. He has successful... Show more

Syed Usman Ahmad

Syed Usman Ahmad

Usman is a Staff Developer Advocate at Grafana Labs from Nuremberg, Germany. He works with the Open Source community on the community forum, GitHub and Slack.

He has over 15 years of experience in IT and in Cloud Stack where he served multiple customers all over Europe, US, Japan, etc.

He is an active international public speaker participating in multiple conferences and events.

In his free time, Usman likes to spend time with his family, go out on occasional traveling and play games or read comics.

Usman is a Staff Developer Advocate at Grafana Labs from Nuremberg, Germany. He works with the Open Source community on the community forum, GitHub and Slack. He has over 15 years of experience in IT and in Cloud Stack where he served multiple cus... Show more

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

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

Tom Colvin

Tom Colvin

I'm a Google Developer Expert in Android and CTO of Apptaura, the mobile app development agency. I build great apps for people, helping them to build great app businesses. I have a commercial focus and a wide knowledge of many technologies (both back- and front-end).

I'm a regular conference speaker on topics related to Android, and app startups more generally. I also provide mentorship to those looking to start app businesses.

I have a proven entrepreneurial capability and enjoy the energy of startup culture.

I'm a Google Developer Expert in Android and CTO of Apptaura, the mobile app development agency. I build great apps for people, helping them to build great app businesses. I have a commercial focus and a wide knowledge of many technologies (both back... Show more

Uros Babic

Uros Babic

Uros is a Global Product Engineer for Microsoft Security DevOps at SoftwareOne’s Global Center of Excellence. He contributes to the design and innovation of MXDR for Microsoft Sentinel and strengthens Managed SOC capabilities through security automation, incident response engineering, and SOC‑as‑code development.

With 20+ years of cybersecurity experience, he focuses on Azure‑based security architecture, CI/CD automation, and large‑scale SecOps engineering using Bicep, Terraform, and GitHub Actions. As a Microsoft Security MVP and Microsoft Certified Trainer, he actively shares knowledge through community events, conferences, and technical content, with a strong focus on Microsoft Defender, Sentinel, and AI‑driven security automatio

Uros is a Global Product Engineer for Microsoft Security DevOps at SoftwareOne’s Global Center of Excellence. He contributes to the design and innovation of MXDR for Microsoft Sentinel and strengthens Managed SOC capabilities through security automa... Show more

Augustin Dokoza Bukvic

Augustin Dokoza Bukvic

Augustin is an Analytics Architect, Microsoft Certified Trainer, Speaker, and Power Platform User Group Stuttgart founder and leader.
Working as a CoE lead and a Solution Architect with the main focus on the Power BI platform and Data Governance.
Working with Power BI since the public preview version, and delivered multiple large-scale enterprise analytics projects for Fortune 500 companies. Passionate about data culture and governance.

Augustin is an Analytics Architect, Microsoft Certified Trainer, Speaker, and Power Platform User Group Stuttgart founder and leader. Working as a CoE lead and a Solution Architect with the main focus on the Power BI platform and Data Governance. ... Show more

Chris Huntingford

Chris Huntingford

Hi there, I’m Chris!

I'm a seasoned tech leader, keynote speaker, and technology consultant with expertise across the full tech stack, from enterprise architecture and data platforms to advanced AI (including Agentic AI and Responsible AI / Trustworthy AI). I’ve led large-scale, high-value enterprise projects and initiatives across industries (with a strong focus on government), helping organizations harness emerging technology responsibly to solve real-world challenges - I try to remove the fluff and cut to solving the real problem.

My style is bold, straight-talking, and deeply authentic. I'm a natural connector who brings people together to spark collaboration and creativity. A lifelong tinkerer and excessively curious, I thrive on exploring new ideas and building communities around innovation. I encourage teams to think differently, color outside the lines, and always remember to stay human in a tech-driven world.

As an international keynote speaker, I've energized audiences with talks on AI, Ethics in Tech, data strategy, and true concepts around digital transformation, infusing humor and real-talk into every session. Whether I'm advising C-suite leaders on AI strategy or coaching teams on the latest tech, my goal is to inspire innovation, enable people to do awesome things and drive positive change. If you're on the verge of the next big breakthrough and need a dynamic speaker or consultant, let's connect. I'm all about helping to #BuildAwesomeThings and making sure we all #StayExtraHuman along the way.

Hi there, I’m Chris! I'm a seasoned tech leader, keynote speaker, and technology consultant with expertise across the full tech stack, from enterprise architecture and data platforms to advanced AI (including Agentic AI and Responsible AI / Trustw... Show more

Santhana Lakshmi Ponnurasan

Santhana Lakshmi Ponnurasan

Lakshmi is a Microsoft MVP (Data Platform) and a Certified Power BI Data Analyst, currently working in the Institutional Effectiveness department at Missouri University of Science and Technology. She is passionate about creating creative and innovative Power BI reports that not only make data pop but also provide actionable insights. She was a Finalist in the Microsoft Power BI DataViz World Championships 2025 and 2026, showcasing her ability to combine technical expertise with storytelling. An engaging speaker, she frequently speaks about all things Power BI at user groups and conferences, and also shares tips and best practices on her Medium blog.

Lakshmi is a Microsoft MVP (Data Platform) and a Certified Power BI Data Analyst, currently working in the Institutional Effectiveness department at Missouri University of Science and Technology. She is passionate about creating creative and innovati... Show more

Daniele Mario Areddu

Daniele Mario Areddu

Daniele Mario Areddu is a young Italian technologist, international conference speaker, Backend and AI Developer at Global Technologies Italia, and Computer Science student at the University of Calabria.

Over the past two years, he has delivered around 30 technical talks across Europe, the United States and Central Asia, taking the stage in New York, Dallas, Madrid, Sofia, Bucharest, Tirana, Almaty and Bishkek, to name just a few. His sessions explore autonomous AI agents, Retrieval-Augmented Generation, LLM-powered applications, cloud-to-edge architectures and production-ready backend systems.

Daniele develops AI-powered applications and scalable backend services using Python, Flask, Node.js and REST APIs. His experience also includes PySpark, Microsoft Fabric and Power Platform, with a focus on integrating agentic AI, contextual retrieval and on-device intelligence into real-world software architectures.

Passionate about Artificial Intelligence, youth empowerment, community building and knowledge sharing, he is the founder and Community Lead of Velletri.dev. Through meetups and technical initiatives, he creates opportunities for young people, students and developers to connect, exchange ideas and grow together.

Daniele Mario Areddu is a young Italian technologist, international conference speaker, Backend and AI Developer at Global Technologies Italia, and Computer Science student at the University of Calabria. Over the past two years, he has delivered a... Show more

Fabio Catinella

Fabio Catinella

Fabio is an Android lover even before being an Android Developer.
He is specialized in Kotlin Multiplatform and Jetpack Compose, with a focus on building scalable architecture and fostering developer communities through international speaking. He is driven by high-quality code and the creative side of mobile innovation.

In his spare time, he also organizes community events with the GDG Venezia.

Fabio is an Android lover even before being an Android Developer. He is specialized in Kotlin Multiplatform and Jetpack Compose, with a focus on building scalable architecture and fostering developer communities through international speaking. He is... Show more

Juan Vazquez

Juan Vazquez

Juan Vázquez is a Microsoft Certified Trainer (MCT) with 25 years of experience helping professionals and organizations adopt Microsoft technologies effectively. He is the CTO of DT Software Services, a Microsoft Partner, where he leads architecture, training, and technology strategy initiatives focused on data, analytics, AI, and Microsoft Fabric.

Juan serves as an MCT Regional Lead and holds multiple certifications across Microsoft Fabric, Power Platform, and Azure AI, further strengthening his expertise in modern data and AI solutions. He is also part of Microsoft’s In a Day program, where he delivers official workshops such as Fabric Analyst in a Day, Chat with Your Data in a Day, Real-Time Analytics in a Day, and Dashboard in a Day. In addition, he has delivered sessions at recognized community and industry events, including Power Platform Community Conference, Partner Vibe, and other Microsoft-focused conferences, workshops, and training programs.

With a strong technical background in SQL Server, .NET, data platforms, and solution architecture, Juan combines deep technical knowledge with a clear and engaging teaching style. He is recognized for helping teams move beyond theory into real-world implementation through impactful training sessions, workshops, and solution design.

Juan Vázquez is a Microsoft Certified Trainer (MCT) with 25 years of experience helping professionals and organizations adopt Microsoft technologies effectively. He is the CTO of DT Software Services, a Microsoft Partner, where he leads architecture,... Show more

Kristen B. Hubler

Kristen B. Hubler

Kristen B. Hubler, M.Ed., mini-MBA, Prosci Certified Change Management Specialist, and Certified Scrum Master, is a consultant, speaker, best-selling author, and founder of Workshops by Kristen. She specializes in helping organizations successfully adopt new technologies by combining change management, learning, and adoption best practices with practical business strategies. In recent years, Kristen has focused extensively on helping organizations deploy Microsoft Copilot and AI solutions, designing training programs, adoption campaigns, governance strategies, and user enablement initiatives that drive meaningful business outcomes and increase AI adoption at scale.

Kristen B. Hubler, M.Ed., mini-MBA, Prosci Certified Change Management Specialist, and Certified Scrum Master, is a consultant, speaker, best-selling author, and founder of Workshops by Kristen. She specializes in helping organizations successfully a... Show more

Marin Niehues

Marin Niehues

Marin Niehues is an independent consultant at the intersection of organizational design and delivery, helping companies build and operate structures that actually deliver. Across 20+ client projects with organizations from VC-backed scaleups to DAX40 companies, Marin works either embedded in line functions as a Delivery Lead or Business Analyst or strategically on organizational design, governance and process architecture.

In the past three years, Marin has spoken at conferences in more than twenty countries across six continents, including repeated invitations from Google and Microsoft.

Marin Niehues is an independent consultant at the intersection of organizational design and delivery, helping companies build and operate structures that actually deliver. Across 20+ client projects with organizations from VC-backed scaleups to DAX40... Show more

Sergio Valverde

Sergio Valverde

Experienced professional with a diverse background in Software, Architecture, infrastructure, SRE, OpenSource. Versatile in Research and Development. Proven track record in various roles across startups and corporations. Committed team player, thriving in collaborative environments, and dedicated to continuous learning.

I love sharing what I learn, which is why I actively participate in tech communities, organize events, give talks, and create content on platforms like YouTube, X, and GitHub.

My goal when giving a talk is always to provide practical value by sharing real-world lessons, tools, and best practices that attendees can apply the very next day. If you join one of my sessions, you'll leave with clear ideas, real examples, and the motivation to try it yourself.

Experienced professional with a diverse background in Software, Architecture, infrastructure, SRE, OpenSource. Versatile in Research and Development. Proven track record in various roles across startups and corporations. Committed team player, thrivi... 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.