Most Active Speakers 2025

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

  • 1125 speakers
  • Auto-generated
Liz Sundet

Liz Sundet

Liz loves a challenge, so everything from a business problem to troubleshooting an error in a system is just another learning opportunity. As a trainer and international speaker, she hopes to inspire others to learn something they can apply to their own work immediately. When she is not working in SharePoint or traveling, you may find her in a variety of activities as diverse as she is: playing music, riding motorcycles, training her dog and even a craft or two.

Liz loves a challenge, so everything from a business problem to troubleshooting an error in a system is just another learning opportunity. As a trainer and international speaker, she hopes to inspire others to learn something they can apply to their ... Show more

Hazel Saenz

Hazel Saenz

Hazel Saenz is a LATAM Developer Advocate at Amazon Web Services (AWS) and a Former AWS Serverless Hero, with over 20 years of experience in application development and 6 years working with cloud technologies.

She specializes in serverless architectures, event-driven systems, and Generative AI on AWS, and is a frequent speaker at AWS Summits, Community Days, and international conferences, sharing practical knowledge with the developer community across Latin America.

Hazel Saenz is a LATAM Developer Advocate at Amazon Web Services (AWS) and a Former AWS Serverless Hero, with over 20 years of experience in application development and 6 years working with cloud technologies. She specializes in serverless archite... Show more

Tommaso Stocchi

Tommaso Stocchi

Tommaso is a Cloud Solution Architect for Microsoft's Application Innovation team. He supports developers in the adoption of Microsoft's technologies with a focus on Cloud Native Applications and DevOps.

Tommaso is a Cloud Solution Architect for Microsoft's Application Innovation team. He supports developers in the adoption of Microsoft's technologies with a focus on Cloud Native Applications and DevOps. Show more

Henrik Rexed

Henrik Rexed

Henrik is a Cloud Native Advocate at Dynatrace, the leading Observability platform. Prior to Dynatrace, Henrik has worked more than 15 years, as Performance Engineer. Henrik Rexed Is Also one of the Organizer of the conferences named WOPR, KCD Austria and the owner of the Youtube Channel IsitObservable.

Henrik is a Cloud Native Advocate at Dynatrace, the leading Observability platform. Prior to Dynatrace, Henrik has worked more than 15 years, as Performance Engineer. Henrik Rexed Is Also one of the Organizer of the conferences named WOPR, KCD Austri... 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

Patrycja Wegrzynowicz

Patrycja Wegrzynowicz

Patrycja is a principal consultant and founder of Yon Labs, a startup developing automated tools for detecting and refactoring security vulnerabilities, performance anti-patterns, and cloud misconfigurations. She brings deep expertise in Java, C++, SRE, DevOps, security, performance optimization, and cloud technologies.

She is a regular speaker at leading software conferences, including KubeCon, JavaOne, Devoxx, JFokus, and others. Patrycja has been recognized as a Java Champion and holds titles such as Oracle Groundbreaker Ambassador, Oracle ACE Associate, and Oracle ACE Pro. In 2016, she was named one of the Top 10 Women in Tech in Poland.

Her interests focus on automated software engineering, particularly static and dynamic analysis techniques to support software verification, optimization, and deployment.

Patrycja is a principal consultant and founder of Yon Labs, a startup developing automated tools for detecting and refactoring security vulnerabilities, performance anti-patterns, and cloud misconfigurations. She brings deep expertise in Java, C++, S... Show more

Chad Green

Chad Green

Chad Green is a visionary Senior Systems Architect at Jasper Engines & Transmissions with over 35 years of expertise in crafting innovative, customer-centric solutions. He is currently leading the migration of legacy systems to cloud-native technologies. His career spans diverse industries, including automotive, healthcare, education, and government. Recognized as a Microsoft Most Valuable Professional (MVP) and a dynamic community leader, Chad champions knowledge-sharing by organizing conferences and meetups and delivering speaking engagements at national and international events.

Outside the tech world, Chad proudly embraces his roles as a dedicated father, loving husband, and United States Marine Corps veteran. When he's not leading innovation or empowering communities, you'll find him bringing creativity to life through intricate Lego builds and his ever-growing Lego city.

Chad Green is a visionary Senior Systems Architect at Jasper Engines & Transmissions with over 35 years of expertise in crafting innovative, customer-centric solutions. He is currently leading the migration of legacy systems to cloud-native technolog... Show more

Peter Daalmans

Peter Daalmans

Peter is a Principal Workplace Consultant / Architect and Microsoft Certified Trainer at SecMinds Solutions with a primary focus on the Microsoft Intune, Configuration Manager and Enterprise Mobility. Peter is awarded every year as a Security MVP (Microsoft Intune) since 2012 and as a Windows 365 MVP since 2024.

Peter writes blogs and sharing his knowledge on his blog https://ModernManagement.blog . Peter is also one of the founders and leads of the Workplace Ninja User Group Netherlands.

Author of Mastering System Center 2012 Configuration Manager, Mastering System Center 2012 R2 Configuration Manager and the just in 2017 released Mastering System Center Configuration Manager, books from Sybex and a book called: Microsoft Enterprise Mobility Suite, Microsoft Enterprise Mobility Suite: Planning and Implementation. Peter was one of the co-authors a book called Microsoft 365 Security for ITPros which was updated every month, for 2,5 years.

Peter speaks at local and international group meetings, conferences like Microsoft Ignite, Microsoft TechEd (Australia / New Zealand), IT/Dev Connections, Techmentor, Techorama Belgium, Midwest Management Summit (MMS), BriForum (London, Denver and Boston), TechDays Netherlands and ExpertsLive Netherlands

Peter is a Principal Workplace Consultant / Architect and Microsoft Certified Trainer at SecMinds Solutions with a primary focus on the Microsoft Intune, Configuration Manager and Enterprise Mobility. Peter is awarded every year as a Security MVP (Mi... Show more

Renuka Kelkar

Renuka Kelkar


Renuka Kelkar is a trailblazing figure in the tech industry, known for her multifaceted roles as Co-Founder of ARNA Genext Solutions, Google Developer Expert for Flutter and Dart, and Founder of the TechPowerGirls Community. With a passion for fostering diversity and inclusion, she serves as an organizer for GDG London and a WomenTechmaker ambassador. Renuka's impactful contributions were recognized with the prestigious Diversity and Inclusion Award from Google in 2023. Her dynamic speaking prowess has earned her the prestigious title of Most Active Speaker for the past two years consecutively on Sessionize, cementing her reputation as a driving force in the tech community.

Renuka Kelkar is a trailblazing figure in the tech industry, known for her multifaceted roles as Co-Founder of ARNA Genext Solutions, Google Developer Expert for Flutter and Dart, and Founder of the TechPowerGirls Community. With a passion for fost... Show more

Margarita Naumova

Margarita Naumova

Magi Naumova is an SQL Server Architect and Consultant, speaker and trainer, Microsoft Certified Master, MVP, MCT, Founder of SQL Master Academy, and founder and CEO Of Inspirit Data Platform Consulting Company in Bulgaria and Norway, founder, and the leader of Bulgarian SQL & BI User group and Azure Analytics User Group BG. She has more than 25 years SQL Server training and consulting experience. Magi is a former member of Microsoft Services Worldwide Technical Leadership Team. Currently she speaks, writes, trains and consults people on SQL Server and MS Fabric Data Platform. She is MVP for 15 years in a row. Her unique SQL Master Academy training program has helped hundreds of specialists to feel knowledgeable in their daily work or to find an inspirational career path in the world of SQL Server.

Magi Naumova is an SQL Server Architect and Consultant, speaker and trainer, Microsoft Certified Master, MVP, MCT, Founder of SQL Master Academy, and founder and CEO Of Inspirit Data Platform Consulting Company in Bulgaria and Norway, founder, and th... Show more

Luise Freese

Luise Freese

Luise is an Azure & Power Platform Architect based in Germany. She is an awarded Microsoft Most Valuable Professional (MVP) working with organizations that want to move beyond digital theatre. Her focus is on AI-enabled solutions that are designed to last in real-world environments. She helps teams build accessible apps, robust data models, and automation that respects governance, compliance, and human effort. A recurring theme in her work is making the invisible visible: unmeasured work, emotional load, operational friction, and the real cost of “quick wins”. Her motto "Changing the world one app at a time" stems from her extensive work with non-profit organizations.

Alongside client work, Luise writes and speaks about productivity myths, pseudo-agile practices, AI readiness, and why many digital initiatives fail long before technology becomes the problem. She is known for combining clear technical guidance with a sharp eye for organizational patterns; and for asking the uncomfortable questions others tend to avoid.

When not working and traveling, she is a runner, a mother of (teenage) dragons, a LEGO-builder and a lover of the number 42. Her favorite color is #ff69b4. 

Luise is an Azure & Power Platform Architect based in Germany. She is an awarded Microsoft Most Valuable Professional (MVP) working with organizations that want to move beyond digital theatre. Her focus is on AI-enabled solutions that are designed to... Show more

Grant Fritchey

Grant Fritchey

Grant Fritchey is a Data Platform MVP and AWS Community Builder with over 30 years’ experience in IT, including time spent in support and development. Grant works with multiple data platforms including SQL Server and PostgreSQL as well as multiple cloud platforms. He has also developed in VB, VB.NET, C#, and Java. Grant writes books for Apress and Simple-Talk. Grant presents at conferences and user groups, large and small, all over the world. He joined Redgate Software as a product advocate in January 2011.

Grant Fritchey is a Data Platform MVP and AWS Community Builder with over 30 years’ experience in IT, including time spent in support and development. Grant works with multiple data platforms including SQL Server and PostgreSQL as well as multiple cl... Show more

Sander Berkouwer

Sander Berkouwer

Sander Berkouwer works as an independent identity architect in the Netherlands, where he helps organizations make the most out of Microsoft products, services, strategies and technologies. Sander blogs on DirTeam.com. He regularly gets invited as speaker for his enthusiastic approach, his in-depth real-world knowledge and as the author of the much-appraised Active Directory Cookbooks. Sander has been awarded with the Microsoft Most Valuable Professional (MVP) award (for the last 16 years), Veeam Vanguard award (for the last 8 years) and VMware vExpert (for 3 years).

Sander Berkouwer works as an independent identity architect in the Netherlands, where he helps organizations make the most out of Microsoft products, services, strategies and technologies. Sander blogs on DirTeam.com. He regularly gets invited as spe... Show more

Bharath Nallapeta

Bharath Nallapeta

Bharath Nallapeta leads the Open Source Program Office at Mirantis, where he works on the infrastructure beneath modern platforms: Kubernetes cluster lifecycle, bare metal, multi-cluster management, and the fast-moving world of AI agents. He contributes to Cluster API and its OpenStack provider, works on agentic workflows, and spends most of his time on the unglamorous layers that decide whether a platform actually holds up in production.

He's also one of the more active speakers in his field, with numerous talks at conferences and meetups worldwide, including KubeCon, MCP Dev Summit, OpenInfra Summit, DevOpsDays and more. He gravitates toward sessions that show real, working things instead of slides, and that make hard infrastructure approachable for the people who have to run it.

Bharath Nallapeta leads the Open Source Program Office at Mirantis, where he works on the infrastructure beneath modern platforms: Kubernetes cluster lifecycle, bare metal, multi-cluster management, and the fast-moving world of AI agents. He contribu... Show more

Tim De Keukelaere

Tim De Keukelaere

Tim is a freelance consultant with more than 20 years of experience in modern workplace and mobility solutions. A Microsoft MVP for 12 consecutive years, Tim specializes in endpoint management, security, and Microsoft Intune. He works with organizations worldwide to design and implement secure, scalable, and user-friendly workplace environments.

Beyond consulting, Tim is a community leader, organizing and speaking at user groups, meetups, and international tech conferences. Based in Belgium, he’s passionate about sharing knowledge, bridging the gap between technology and people, and helping IT teams turn complex challenges into practical, impactful solutions.

Tim is a freelance consultant with more than 20 years of experience in modern workplace and mobility solutions. A Microsoft MVP for 12 consecutive years, Tim specializes in endpoint management, security, and Microsoft Intune. He works with organizati... Show more

Nestori Syynimaa

Nestori Syynimaa

Dr Nestori Syynimaa is a Principal Identity Security Researcher at Microsoft Threat Intelligence Center He has over a decade of experience with the security of Microsoft cloud services and is known as the creator of the AADInternals toolkit. Before joining Microsoft in early 2024, Dr Syynimaa worked as a researcher, CIO, consultant, trainer, and university lecturer for over 20 years.

Dr Syynimaa has spoken in many international scientific and professional conferences, including IEEE TrustCom, TROOPERS, BSides, Black Hat USA, Europe, and Asia, Def Con, and RSA Conference.

Dr Nestori Syynimaa is a Principal Identity Security Researcher at Microsoft Threat Intelligence Center He has over a decade of experience with the security of Microsoft cloud services and is known as the creator of the AADInternals toolkit. Before j... Show more

Sue Bayes

Sue Bayes

Microsoft MVP Data Platform
Microsoft Certified: Fabric Data Engineer Associate, Fabric Analytics Engineer Associate, Azure Enterprise Data Analyst Associate, Power BI Data Analyst Associate

Over 7 years successfully working as an independent Power BI developer and data analyst within the public and private sector.

Reporting solutions range from project management, planning , financial reporting, specific service sector reporting, bespoke data cleansing and sentiment analysis.

15 years of lecturing in Business and Computing before starting my own business.

I am passionate about data in general and how we can harness information to grow business. Knowledge of R, SQL and C# but main love is Python, M and DAX.

When not in front of the screen, I love to run and walk my dog and be outside.

Microsoft MVP Data Platform Microsoft Certified: Fabric Data Engineer Associate, Fabric Analytics Engineer Associate, Azure Enterprise Data Analyst Associate, Power BI Data Analyst Associate Over 7 years successfully working as an independent Po... Show more

Liran Tal

Liran Tal

Liran Tal is a software developer, and a GitHub Star, world-recognized for his activism in open source communities and advancing web and Node.js security. He engages in security research through his work in the OpenJS Foundation and the Node.js ecosystem security working group, and further promotes open source supply chain security as an OWASP project lead. Liran is also a published author of Essential Node.js Security and O'Reilly's Serverless Security. At Snyk, he is leading the developer advocacy team and on a mission to empower developers with better dev-first security.

Liran Tal is a software developer, and a GitHub Star, world-recognized for his activism in open source communities and advancing web and Node.js security. He engages in security research through his work in the OpenJS Foundation and the Node.js ecosy... Show more

Verónica Rivas Remiseiro

Verónica Rivas Remiseiro

A computer engineer with over 25 years of experience, my profession has fascinated me since I was a child, providing me with wonderful professional and personal experiences 👩‍💻

I enjoy building teams, sharing with them, growing together, and executing projects with the greatest possible success 👌

Enjoying my full return to the world of technology, security, AI, etc., constantly learning and exploring because knowledge is power, in addition to working as an event moderator, speaker, and writer 🚀

Author of my first book based on personal events with a stowaway named Alzheimer's, in homage to the woman who helped me become who I am today 🧠

Passionate about my life, my profession, and technology 💛

A computer engineer with over 25 years of experience, my profession has fascinated me since I was a child, providing me with wonderful professional and personal experiences 👩‍💻 I enjoy building teams, sharing with them, growing together, and exe... Show more

Max Körbächer

Max Körbächer

Max is Founder and Technology Advisor at Liquid Reply. He is Emeritus Lead of the CNCF Environmental Sustainability TAG, CNCF Ambassador and Linux Foundation Europe Advisory Board member. Max focuses on platform engineering to simplify the current challenges of complex systems in the cloud native space and recently published about Platform Engineering for Architect. Besides, Max organizes Kubernetes Community Days in Munich & Ukraine, and Kubernetes & Cloud Native Meetup in Munich.

Max is Founder and Technology Advisor at Liquid Reply. He is Emeritus Lead of the CNCF Environmental Sustainability TAG, CNCF Ambassador and Linux Foundation Europe Advisory Board member. Max focuses on platform engineering to simplify the current ch... Show more

Jayshree Ostwal

Jayshree Ostwal

An MVP, solutions architect , Microsoft Certified Trainer with a passion for the Power Platform, M365 Copilot, GenAI, Azure technology.

Empowering enterprises to thrive with Microsoft Copilot & Modern Workplace AI solution frameworks to solve challenges and to drive impactful change across Health & Public Sector. I have an intense enthusiasm for technology and innovation along with its governance and security aspects. An advocate of women empowerment through Information Technology.

An MVP, solutions architect , Microsoft Certified Trainer with a passion for the Power Platform, M365 Copilot, GenAI, Azure technology. Empowering enterprises to thrive with Microsoft Copilot & Modern Workplace AI solution frameworks to solve chal... Show more

Toni Ferrà Arbós

Toni Ferrà Arbós

Desarrollador que paso al mundo del dato, por eso intento aprovechar mi experiencia en desarrollo para automatizar procesos

Desarrollador que paso al mundo del dato, por eso intento aprovechar mi experiencia en desarrollo para automatizar procesos Show more

Sergio Hernandez Mancebo

Sergio Hernandez Mancebo

[Azure MVP - Cloud Solution Architect]

Soy Sergio Hernández Macebo, Ingeniero en Informática por la Facultad UCM de Madrid.
Desde 2012 centrado en el desarrollo de aplicaciones Microsoft, desde aplicaciones Sharepoint On premises en todas sus versiones, a aplicaciones Office 365 (Sharepoint & Dynamics CRM).
Desde hace unos años dedico mi actividad a la coordinación de proyectos desde la figura de Team Leader sobretodo proyectos cloud en Azure, así como lidear el equipo de Team Leader, que incluye tanto el liderazgo del equipo de proyectos. En la actualidad muy centrado en definir arquitecturas empresariales y globales a una gran compañia multinacional, basadas en soluciones Cloud.

Enamorado de la tecnología, participo en revistas técnicas como Compartimoss, colaborador en distintos grupos de usuarios como SUGES, asiduo en eventos de la comunidad Microsoft como ponente u organizador, además de contar con una comunidad de usuarios propia llamada Crossdevlopment, que da cabida a que cualquiera que tenga un buen tema que compartir tenga un espacio para ser escuchado.

[Azure MVP - Cloud Solution Architect] Soy Sergio Hernández Macebo, Ingeniero en Informática por la Facultad UCM de Madrid. Desde 2012 centrado en el desarrollo de aplicaciones Microsoft, desde aplicaciones Sharepoint On premises en todas sus v... Show more

Anmol Krishan Sachdeva

Anmol Krishan Sachdeva

Anmol Krishan Sachdeva (greatdevaks) is a seasoned technologist who has spoken at 100+ global conferences, bridging technical deep dives with architectural strategies. He helps organizations navigate emerging technologies for driving key business outcomes.

An advocate for sustainable innovation, he currently serves as a Sr. Solutions Engineer (Platform Engineering) at Google. Balancing industry with academia, Anmol is a Distinguished Lecturer, an Adjunct Professor, and a published researcher.

Anmol Krishan Sachdeva (greatdevaks) is a seasoned technologist who has spoken at 100+ global conferences, bridging technical deep dives with architectural strategies. He helps organizations navigate emerging technologies for driving key business out... Show more

Saumya Smriti

Saumya Smriti

I have been working with Microsoft AI tools for over three years now and delivered over 20 sessions so far in the field of AI and Copilot

I have been working with Microsoft AI tools for over three years now and delivered over 20 sessions so far in the field of AI and Copilot Show more

Barbara Gaspar

Barbara Gaspar

Especialista FinOps con 7 años de experiencia liderando implementaciones técnicas, operaciones en la nube (AWS, AZURE, GCP) y gestión de soporte técnico para clientes de diferentes sectores, resolviendo casos técnicos con la colaboración de equipos internos y externos. Ganadora de la presea Jóvenes con Valores, y del primer lugar del premio Daniel Cosío Villegas, autora de 7 libros sobre tecnología y FinOps. Cuenta con todas las certificaciones de la FinOps Foundation

Especialista FinOps con 7 años de experiencia liderando implementaciones técnicas, operaciones en la nube (AWS, AZURE, GCP) y gestión de soporte técnico para clientes de diferentes sectores, resolviendo casos técnicos con la colaboración de equipos i... Show more

Hamish Watson

Hamish Watson

Hamish is a Microsoft Data Platform MVP with a passion for efficient database & application deployments using DevOps methodologies.

He has formed his own company – Morph iT – based in Christchurch, New Zealand and provides consultancy services for many clients in the US, Canada, UK, Australia and NZ
He has 20 years IT experience in managing and deploying large scale databases on SQL Server technologies. He has been managing SQL Server since SQL Server 2000 and pragmatic approaches to delivering business value to end users is his career passion.

Educating and helping others learn is a driver for Hamish and he is a User Group Leader, International speaker and a repeat guest lecturer at universities.

Hamish is a Microsoft Data Platform MVP with a passion for efficient database & application deployments using DevOps methodologies. He has formed his own company – Morph iT – based in Christchurch, New Zealand and provides consultancy services for... Show more

Spyros Gasteratos

Spyros Gasteratos

Spyros has 20 years of experience in the security world. Since the beginning of his career he has been an avid supporter and contributor of open source software and an OWASP volunteer. Currently he is interested in the harmonization of security tools and information and is currently helping large regulated companies setup and automate their AppSec programmes. He also maintains several Open Source projects including the security automation framework Smithy, and opencre.org, the worlds largest security knowledge graph. Also, he usually doesn’t speak about himself in the third person.

Spyros has 20 years of experience in the security world. Since the beginning of his career he has been an avid supporter and contributor of open source software and an OWASP volunteer. Currently he is interested in the harmonization of security tools... Show more

Ignat Korchagin

Ignat Korchagin

Ignat is a systems engineer at Cloudflare working mostly on Linux, platforms and hardware security. Ignat’s interests are cryptography, hacking, and low-level programming. Before Cloudflare, Ignat worked as a senior security engineer for Samsung Electronics’ Mobile Communications Division. His solutions may be found in many older Samsung smart phones and tablets. Ignat started his career as a security researcher in the Ukrainian government’s communications services.

Ignat is a systems engineer at Cloudflare working mostly on Linux, platforms and hardware security. Ignat’s interests are cryptography, hacking, and low-level programming. Before Cloudflare, Ignat worked as a senior security engineer for Samsung Elec... Show more

Alain Delachaux

Alain Delachaux

Je suis tombé dans la marmite Agile en 2018, après 17 ans de vie dans l'IT et la conception de produits.
D'abord Product Owner, puis Scrum Master. Aujourd’hui, j’accompagne les équipes dans leur découverte de l’Agilité.
Je me considère comme agnostique en matière d’Agilité. Pour moi les frameworks sont des outils utiles, à condition d’être bien compris et utilisés avec discernement.
Mon objectif est de rester fidèle au Manifeste Agile et à son esprit, tout en étant attentif aux impacts humains, organisationnels et environnementaux — notamment en promouvant un numérique responsable.

Je suis tombé dans la marmite Agile en 2018, après 17 ans de vie dans l'IT et la conception de produits. D'abord Product Owner, puis Scrum Master. Aujourd’hui, j’accompagne les équipes dans leur découverte de l’Agilité. Je me considère comme agnost... Show more

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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.