Most Active Speakers 2025

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

  • 1127 speakers
  • Auto-generated
Natarajan Ravikumar

Natarajan Ravikumar

Natarajan Ravikumar is a seasoned Technology Executive with over a decade of experience leading enterprise transformation across Cybersecurity, Artificial Intelligence (AI), Cloud Architecture, and strategic program execution within Fortune 500 organizations. Based in Charlotte, North Carolina, he specializes in Enterprise Systems Architecture, delivering secure, scalable, and innovative technology solutions that drive digital transformation, operational excellence, and business growth. He has proven expertise in managing large-scale technology initiatives across diverse sectors, including manufacturing, retail, and industrial software.
His career includes notable tenures at Honeywell International, Ashley Furniture Industries, and Home Depot where he led cross-functional teams in delivering impactful solutions such as cloud migrations, IoT platform enablement, enterprise security, data analytics, and M&A IT integrations.
Ravikumar is highly accomplished in Agile, SAFe 5.0, and Lean Portfolio Management practices, and has been instrumental in achieving CMM Level 5 and Level 2 certifications. He possesses a strong command of the Software Development Life Cycle (SDLC), process optimization through Six Sigma and ITIL frameworks, and portfolio governance. A natural leader and mentor, he has built and coached teams in Cloud Architecture, AI/ML, and Cybersecurity, consistently aligning technical delivery with business strategy and measurable ROI.
Academically, he holds three master’s degrees from the University of North Carolina at Charlotte in Data Science & Business Analytics, Computer Science, and Business Administration (MBA), along with a Bachelor’s in Computer Science from Anna University, India. He is a CISM, PMP, ITILv3, AWS Cloud Architect, and Six Sigma Yellow Belt certified, and has earned multiple Bravo and Impact Awards for outstanding project execution and innovation. His technical toolkit includes Java, Python, Power BI, Tableau, ServiceNow, cloud platforms, cybersecurity architecture, and AI/ML models, with a strategic focus on driving performance, scalability, and digital transformation.

Natarajan Ravikumar is a seasoned Technology Executive with over a decade of experience leading enterprise transformation across Cybersecurity, Artificial Intelligence (AI), Cloud Architecture, and strategic program execution within Fortune 500 organ... Show more

Michael Hunger

Michael Hunger

Michael Hunger has been passionate about software development for more than 30 years.

For the last 15 years, he has been working on the open source Neo4j graph database filling many roles, most recently heading product innovation and GenAI.

As a developer Michael enjoys many aspects of software development and architecture, learning new things every day, participating in exciting and ambitious open source projects and contributing and writing software related books and articles. Michael spoke at numerous conferences and helped organize others.

Michael helps kids to learn to program by running weekly girls-only coding classes at local schools.

Michael Hunger has been passionate about software development for more than 30 years. For the last 15 years, he has been working on the open source Neo4j graph database filling many roles, most recently heading product innovation and GenAI. As ... Show more

Fawaz Ghali

Fawaz Ghali

Fawaz Ghali, PhD has 25+ years of experience in enterprise architecture, applied AI, data engineering, and distributed systems across academia and industry. He works as an independent consultant and contractor, focusing on aligning AI and technology initiatives with enterprise strategy to deliver scalable, production-ready systems and measurable outcomes beyond hype. He holds a PhD in Computer Science and operates without vendor affiliation or product bias. He has published 45+ peer-reviewed papers and delivered 300+ talks worldwide, focusing on practical AI under real organisational constraints.

Fawaz Ghali, PhD has 25+ years of experience in enterprise architecture, applied AI, data engineering, and distributed systems across academia and industry. He works as an independent consultant and contractor, focusing on aligning AI and technology ... Show more

Andy Yun

Andy Yun

Andy Yun is a Field Solutions Architect at Pure Storage, and has been a SQL Server data professional for almost 25 years. He focuses on performance tuning, with expertise in T-SQL, storage engine internals, and monitoring. Andy strongly believes in passing knowledge onto others, regularly speaking at conferences and user groups, and mentoring industry colleagues. Andy is a former Microsoft MVP, co-founder of the Chicago SQL Association, former co-leader of the Chicago Suburban User Group and Chicago SQL Saturday Organizing Committee.

Andy Yun is a Field Solutions Architect at Pure Storage, and has been a SQL Server data professional for almost 25 years. He focuses on performance tuning, with expertise in T-SQL, storage engine internals, and monitoring. Andy strongly believes in p... Show more

Rafik Mekki

Rafik Mekki

Rafik MEKKI
Senior Agile Coach & Trainer
Leadership Catalyst & Speaker
Creator & Co-Writer Of Infinity Guide

Rafik MEKKI Senior Agile Coach & Trainer Leadership Catalyst & Speaker Creator & Co-Writer Of Infinity Guide Show more

Paula Bria

Paula Bria

Especialista en Business Intelligence con enfoque estratégico. Conecto datos, psicología y storytelling para impulsar decisiones que generen impactos positivos.

Soy Licenciada en Psicología y Magíster en Psicodiagnóstico y Evaluación Psicológica (UBA). Comencé investigando variables emocionales y cognitivas, hasta que decidí traducir ese pensamiento analítico al mundo del análisis de datos.

Trabajo con lo que hay. Optimizo procesos. Profesionalizo reportes. Ordeno el caos. Y convierto intuiciones en métricas accionables. He creado y desarrollado sectores desde cero, instalando cultura data-driven en organizaciones que no siempre contaban con grandes presupuestos, pero sí con desafíos complejos.

Además, soy creadora y host de “La Cocina del Dato”, un espacio donde entrevisto a referentes tecnológicos desde una mirada humana, demostrando que la cultura de datos también se construye desde la comunicación, la comunidad y la creatividad.

Mi motor es claro: abrir puertas. Mostrar que el mundo de los datos no es exclusivo ni inaccesible. Y ayudar a que más personas se animen a dar el salto.

Especialista en Business Intelligence con enfoque estratégico. Conecto datos, psicología y storytelling para impulsar decisiones que generen impactos positivos. Soy Licenciada en Psicología y Magíster en Psicodiagnóstico y Evaluación Psicológica (... Show more

Nathan Clouse

Nathan Clouse

MVP w/ 15 years of #AX2009, #AX2012, and #MSDyn365FO technical and functional experience. I write code, sometimes it's good. #tattoos, #deathmetal and #lifting

MVP w/ 15 years of #AX2009, #AX2012, and #MSDyn365FO technical and functional experience. I write code, sometimes it's good. #tattoos, #deathmetal and #lifting Show more

Tommaso Allevi

Tommaso Allevi

Node.JS and Rust developer
I love to find new way to do things in a better way!

Node.JS and Rust developer I love to find new way to do things in a better way! Show more

Luc van Vugt

Luc van Vugt

In 1999, Luc van Vugt stepped into the Dynamics 365 Business Central world, training hundreds of developers. After Microsoft acquired Navision, he joined Microsoft’s Dynamics localization team GDL as tester, UA specialist, and project lead. For 6 years, he was closely involved with all successive releases. Since he left Microsoft, he has become an active community member by means of his blog. He is co-founder of Dutch Dynamics Community and a speaker at conferences. For all his community work, Luc has been awarded MS MVP since 2011. In 2014, he co-founded NAV Skills, supporting Dynamics 365 Business Central, at that time still called Dynamics NAV, pros around the globe with, among other things, webinars until 2019. He continued ever since to organize webinars under the flag of Areopa webinars. In 2012, Luc started fluxxus.nl, doing miscellaneous projects, including Dynamics 365 Business Central development courses and workshops on design patterns, and automated testing. Luc is one of the main driving forces on test automation in the Dynamics 365 Business Central community.

In 1999, Luc van Vugt stepped into the Dynamics 365 Business Central world, training hundreds of developers. After Microsoft acquired Navision, he joined Microsoft’s Dynamics localization team GDL as tester, UA specialist, and project lead. For 6 yea... Show more

Trey Johnson

Trey Johnson

Trey Johnson is a life-long Microsoft Data Platform enthusiast.

Having been involved with Microsoft Data and Analytics technology for 30+ years, starting with SQL Server on OS2/Warp, Trey has held the roles of Executive leader, Advisor, Consultant, Product Owner, Developer and IT team member. For the last 25 years, Trey has been speaking at conferences globally such as PASS, Microsoft Events, VS Live and many others. Trey remains passionate about the Data Community having been involved in the earliest stages of things like SQL Saturday and the Professional Association for SQL Server (PASS).

He has spent the last 16 years focused on ERP and CRM customers helping them do more with their data.

Today, he works with upwards of 200 customers a year to help them architect the best path forward on their Data Journey and now gets to do so with Microsoft Fabric!

When not focused on Data & Analytics, Trey spends his spare time restoring classic Porsche motorcars and boats from his home base in Florida, USA!

Trey Johnson is a life-long Microsoft Data Platform enthusiast. Having been involved with Microsoft Data and Analytics technology for 30+ years, starting with SQL Server on OS2/Warp, Trey has held the roles of Executive leader, Advisor, Consult... Show more

Brooke Avery

Brooke Avery

Brooke is an Angular GDE, software engineer, Technical Program Manager, & community builder. She is the Director of the Angular Community Meetup & a co-producer/host of the Dev Life Podcast. Brooke has a strong passion for education & helping others find success in their developer journeys. Outside of programming, Brooke can be found following the sun and geeking out on Star Wars.

Brooke is an Angular GDE, software engineer, Technical Program Manager, & community builder. She is the Director of the Angular Community Meetup & a co-producer/host of the Dev Life Podcast. Brooke has a strong passion for education & helping others ... Show more

Jonathan Perry

Jonathan Perry

Dr. Jonathan Perry is a maintainer of the OpenTelemetry eBPF network collector and CEO of Unvariance, which develops tools to detect and mitigate noisy neighbors. At MIT, he built systems to enhance efficiency and reduce response times by mitigating network contention. Jonathan previously founded Flowmill, where he developed eBPF-based network monitoring tools prior to the company's acquisition by Splunk. He is based in Austin, Texas.

Dr. Jonathan Perry is a maintainer of the OpenTelemetry eBPF network collector and CEO of Unvariance, which develops tools to detect and mitigate noisy neighbors. At MIT, he built systems to enhance efficiency and reduce response times by mitigating ... Show more

Marcus Hellberg

Marcus Hellberg

Marcus has spent the past 20+ years combining modern web technologies and Java. More recently, he's been exploring how AI is changing the way we interact with computers. Marcus is always curious to learn new things and loves helping developers learn new things. Marcus is a Java Champion and currently works as the VP of AI Research at Vaadin.

Marcus has spent the past 20+ years combining modern web technologies and Java. More recently, he's been exploring how AI is changing the way we interact with computers. Marcus is always curious to learn new things and loves helping developers learn ... Show more

Ricardo Sueiras

Ricardo Sueiras

I have spent the last 30 years spent working in the technology industry, and have over 20 years experience working with open source. I help customers solve business problems with open source technologies and cloud. I am a Developer Advocate for open source at AWS. I help increase awareness of AWS contributions in open source, and why AWS is a great place to run your open source workloads.

I have spent the last 30 years spent working in the technology industry, and have over 20 years experience working with open source. I help customers solve business problems with open source technologies and cloud. I am a Developer Advocate for open ... Show more

Adrian Machado

Adrian Machado

I am a Staff Software engineer working at Zuplo. I specialize in our open source technology and adopting emerging technologies (ex. AI) at the company. This includes our work on RateMyOpenAPI, Zudoku, Mockbin, and various other tools. I've written several blogs for Zuplo, and spoken at several conferences like API World, Plug-n-play, etc. Prior to Zuplo, I was a tech lead in the Facebook Videos org.

I am a Staff Software engineer working at Zuplo. I specialize in our open source technology and adopting emerging technologies (ex. AI) at the company. This includes our work on RateMyOpenAPI, Zudoku, Mockbin, and various other tools. I've written se... Show more

Weimo Liu

Weimo Liu

Dr. Weimo Liu serves as the CEO of PuppyGraph. He was a former software engineer within Google's F1 team and a research scientist at TigerGraph. In these capacities, he specialized in advancing query languages and engines. Dr. Liu earned his PhD degree from GWU, and his BS degree from Fudan University. Notably, he actively participates as a program committee member and reviewer for esteemed conferences like SIGSPATIAL, TKDE, and KDD. His contributions extend to publications in VLDB and ICDE. He also served on the Expert Group for GQL at the International Committee for Information Technology Standards (INCITS).

Dr. Weimo Liu serves as the CEO of PuppyGraph. He was a former software engineer within Google's F1 team and a research scientist at TigerGraph. In these capacities, he specialized in advancing query languages and engines. Dr. Liu earned his PhD degr... Show more

Gerardo Mejia

Gerardo Mejia

Es especialista en ciberseguridad ofensiva, con enfoque en operaciones de red teaming, purple teaming, pruebas de penetración, campañas avanzadas de phishing y ataques dirigidos a entornos de Active Directory. Actualmente forma parte del un equipo regional de seguridad ofensiva, donde diseña y ejecuta ejercicios de simulación de adversarios para fortalecer la resiliencia de las organizaciones ante amenazas sofisticadas.

Cuenta con certificaciones destacadas, como CRTO, CRTP, PNPT, eWPT, CR (HTB Ambassador), C-ADPenX y eCCPT.

Ha sido conferencista en eventos internacionales como PWNEDCR en Costa Rica, BSides Panamá, Dojo Conf Panamá, HackConRD en República Dominicana y Ekoparty en Argentina, Defcon 33 La Villa, Kavacon

Es especialista en ciberseguridad ofensiva, con enfoque en operaciones de red teaming, purple teaming, pruebas de penetración, campañas avanzadas de phishing y ataques dirigidos a entornos de Active Directory. Actualmente forma parte del un equipo re... Show more

Carike Botha

Carike Botha

She is a Microsoft MVP in Power Apps and Power Automate. Her passion is being involved in the tech community. She currently leads the Power Platform team at iSolve business solutions. She loves to keep up to date with whatever is new.

She is a Microsoft MVP in Power Apps and Power Automate. Her passion is being involved in the tech community. She currently leads the Power Platform team at iSolve business solutions. She loves to keep up to date with whatever is new. Show more

Luis Guirigay

Luis Guirigay

Luis Guirigay is the WW Head of Infrastructure Solutions at AWS where he leads the technical offerings and business strategies for Compute, Storage and Networking Solutions. Luis and his team build and deliver production-ready, supported AWS Solutions which help customers and partners solve their most pressing use cases and challenges. He is a published author, speaker, and subject matter expert in the areas of cloud, modernization, high availability, and disaster recovery.

Luis Guirigay is the WW Head of Infrastructure Solutions at AWS where he leads the technical offerings and business strategies for Compute, Storage and Networking Solutions. Luis and his team build and deliver production-ready, supported AWS Solution... Show more

Kirti Prajapati

Kirti Prajapati

Kirti is an Office Development MVP and Microsoft Certified Trainer, has 18+ years of progressive experience in Architect, Designing, Developing, Deployment and Administration of SharePoint Applications and Implementation of business applications in Client/Server and Distributed Environments. Kirti works with clients to develop and deploy comprehensive solutions on SharePoint and Office 365.
Kirti shares his knowledge at https://kirtiprajapati.com/ as he believes that Knowledge is power and sharing knowledge is empowering!

Kirti is an Office Development MVP and Microsoft Certified Trainer, has 18+ years of progressive experience in Architect, Designing, Developing, Deployment and Administration of SharePoint Applications and Implementation of business applications in C... Show more

Clara Vega Caballero

Clara Vega Caballero

Formadora y consultora especializada en implantación de sistemas de control de gestión con Power BI.
LinkedIn learning Instructor en finanzas y gestión de proyectos y docente en programas posgrados y seminarios especializados en escuelas de negocio, empresas y asociaciones
Autora de los libros: “Inteligencia emocional en las finanzas” “Control de gestión con Excel y Power Query”
Divulgadora de contenidos en RRSS con emisiones en directo de los programas: “Finanzas comienza con F” y “Finanzas y Excel” (Vía YouTube y LinkedIn Live).

Formadora y consultora especializada en implantación de sistemas de control de gestión con Power BI. LinkedIn learning Instructor en finanzas y gestión de proyectos y docente en programas posgrados y seminarios especializados en escuelas de negoci... Show more

Kim Dallefeld, MVP, MCT

Kim Dallefeld, MVP, MCT

As a BC/NAV Consultant | MVP | MCT | MCP with 30 years of experience in Dynamics NAV and Business Central (BC), I specialize in empowering companies to get the most out of their ERP systems. Combining deep practical knowledge with an accounting, consulting, and development background, I bring a unique skill set rarely found in a technically oriented individual.

My Expertise:
✅ Bridging the gap between business needs and system capabilities
✅ Blueprinting user requirements vs. BC’s out-of-the-box functionality
✅ Assisting analysts in configuring BC to align with business processes
✅ Developing custom solutions to meet user-specific needs
✅ Project management to ensure successful implementations

I take a hands-on, structured approach to BC implementations—whether helping businesses optimize configurations, assisting developers in building tailored solutions, or managing projects to stay on time and on budget. My goal is to deliver a system that works for you—efficient, scalable, and built for success.

As a BC/NAV Consultant | MVP | MCT | MCP with 30 years of experience in Dynamics NAV and Business Central (BC), I specialize in empowering companies to get the most out of their ERP systems. Combining deep practical knowledge with an accounting, cons... Show more

Gaurav Saxena

Gaurav Saxena

Gaurav Saxena is an engineering leader in the field of platform and cloud engineering with over 20 years of experience in the software industry. His technical expertise includes Stream-based architectures, Kubernetes, Service Mesh, Software Supply Chain Security, and Observability.

Gaurav Saxena is an engineering leader in the field of platform and cloud engineering with over 20 years of experience in the software industry. His technical expertise includes Stream-based architectures, Kubernetes, Service Mesh, Software Supply Ch... Show more

Kasper de Jonge

Kasper de Jonge

Kasper de Jonge is a Principal Program Manager on the Microsoft Fabric team, where he has worked on developing features for Power BI, Power Pivot and SSAS. Currently he is working in the Fabric Customer Advisory Team. He is a frequent speaker at conferences such as Ignite, MBSAS, SQLPASS, and SQLSaturday. His blog can be found at http://www.kasperonbi.com and can also be found at twitter http://twitter.com/kjonge. He is also author of Dashboarding & Reporting with Power BI: How to Design and Create a Financial Dashboard with Power BI .

Kasper de Jonge is a Principal Program Manager on the Microsoft Fabric team, where he has worked on developing features for Power BI, Power Pivot and SSAS. Currently he is working in the Fabric Customer Advisory Team. He is a frequent speaker at conf... Show more

Kristen Hosman

Kristen Hosman

With over 20 years in accounting, ERP systems, and Microsoft Dynamics, Kristen Hosman created Mount Evans Consulting to create accounting systems that fit each small business perfectly.

Kristen is a schooled accountant with a diverse background of accounting experience and brings these experiences and knowledge in working with small businesses to provide the solutions to fit their unique accounting needs. In addition, she is extensively involved in the Microsoft Dynamics community and regularly offers her valuable knowledge in open forums, interviews, and conference appearances.

Kristen serves on the advisory committee for Dynamics User Group (DUG). Her services and experience have earned her a renowned name, four consecutive GPUG All-Star nominations, a Granite Award, and Dynamics 365 All Star Award nomination. Kristen has also been recognized as a Microsoft MVP five years in a row, a recognition reserved for top technology experts who passionately share their knowledge with the community. As a Microsoft Certified Dynamics 365 Business Central Functional Consultant, she demonstrates a high level of domain expertise and can tackle even the most challenging projects.

With over 20 years in accounting, ERP systems, and Microsoft Dynamics, Kristen Hosman created Mount Evans Consulting to create accounting systems that fit each small business perfectly. Kristen is a schooled accountant with a diverse background o... Show more

Alexander Klein

Alexander Klein

Alexander Klein is a senior Business Intelligence consultant with more than 20 years of experience. He focuses on Business Intelligence and Data Warehouse projects with Microsoft technologies like SQL Server, Power BI, Azure ML or Cognitive Services.

Since 2008, he has been a self-employed consultant in large and medium-sized projects in all sectors across Europe. He has been visiting SQL Saturdays all over Europe since 2013.Since 2017 Alexander speaks at national and international conferences / user groups about Data Warehouse, BI, Azure and AI.

Alexander Klein is a senior Business Intelligence consultant with more than 20 years of experience. He focuses on Business Intelligence and Data Warehouse projects with Microsoft technologies like SQL Server, Power BI, Azure ML or Cognitive Services.... Show more

Raymond Comvalius

Raymond Comvalius

Raymond Comvalius is an independent IT architect and trainer from the Netherlands. He has been active in the IT industry for more than 30 years, of which 25+ years focused on Microsoft infrastructure products for both Government and financial institutes. Raymond is the author of multiple books on Windows and security. As an architect he supports organizations in IT strategy and realization of their next generation workplace infrastructure. Raymond is actively involved with the national and international IT community and was a speaker at multiple international Microsoft events.

Raymond Comvalius is an independent IT architect and trainer from the Netherlands. He has been active in the IT industry for more than 30 years, of which 25+ years focused on Microsoft infrastructure products for both Government and financial institu... Show more

Amber Vanderburg

Amber Vanderburg

Amber Vanderburg is a multi-award winning businessperson, keynote speaker, author, and founder of the international learning development company, The Pathwayz Group, which has led 800,000+ learners in more than 75 countries in action-focused learning journeys. Amber's history in talent development includes authoring top-reviewed online learning courses for platforms such as LinkedIn Learning, Lecturio, and PluralSight, acting as Director of a national education leadership company, and coaching with professional sports team academies in Asia. In 2022, she published her first business adventure book "Uniquely Better" about building higher team performance.

Speaking engagements:
https://www.youtube.com/playlist?list=PLMNcx7Jwk9Sp6WxuvrfOOBqdP9440SKl0

Amber Vanderburg is a multi-award winning businessperson, keynote speaker, author, and founder of the international learning development company, The Pathwayz Group, which has led 800,000+ learners in more than 75 countries in action-focused learning... Show more

Habib Mankal

Habib Mankal

Habib is a Principal Consultant and Founder @ http://WaveCoreIT.com , where he helps his clients with their Microsoft 365 Solution Design, Security and Compliance. Ensuring that the end-user is able to conduct their efficiently while complying to the overall corporate policies.

He is also a 10 time Microsoft Copilot, Teams, M365 MVP | MSFT Technologist | Co-Host http://O365eh.com | Blogger | Speaker | Husband |Father

Habib is a Principal Consultant and Founder @ http://WaveCoreIT.com , where he helps his clients with their Microsoft 365 Solution Design, Security and Compliance. Ensuring that the end-user is able to conduct their efficiently while complying to the... Show more

Matteo Collina

Matteo Collina

Matteo is the Co-Founder and CTO of Platformatic.dev. He is also a prolific Open Source author in the JavaScript ecosystem and modules he maintain are downloaded more than 12 billion times a year. Previously he was Chief Software Architect at NearForm, the best professional services company in the JavaScript ecosystem. In 2014, he defended his Ph.D. thesis titled "Application Platforms for the Internet of Things". Matteo is a member of the Node.js Technical Steering Committee focusing on streams, diagnostics and http. He is also the author of the fast logger Pino and of the Fastify web framework. Matteo is an renowed international speaker after more than 60 conferences, including OpenJS World, Node.js Interactive, NodeConf.eu, NodeSummit, JSConf.Asia, WebRebels, and JsDay just to name a few. He is also co-author of the book "Node.js Cookbook, Third Edition" edited by Packt. In the summer he loves sailing the Sirocco.

Matteo is the Co-Founder and CTO of Platformatic.dev. He is also a prolific Open Source author in the JavaScript ecosystem and modules he maintain are downloaded more than 12 billion times a year. Previously he was Chief Software Architect at NearFor... 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.