Most Active Speakers 2023

Sessionize proudly presents the list of the most active speakers in the year 2023!

  • 759 speakers
  • Auto-generated
Lesley Cordero

Lesley Cordero

Lesley Cordero is currently a Staff Software Engineer, Tech Lead at The New York Times. She has spent the majority of her career on edtech teams as an engineer, including Google for Education and other edtech startups.

In her current role, she is focused on observability, shared platforms, and building excellent teams by setting reliability vision & strategy across The Times, improving our observability footprint, and cultivating culture that builds with the most vulnerable employees in mind first. She shows care for others by holding them accountable to the best versions of themselves – and by buying them the occasional bubble tea.

Lesley Cordero is currently a Staff Software Engineer, Tech Lead at The New York Times. She has spent the majority of her career on edtech teams as an engineer, including Google for Education and other edtech startups. In her current role, she is... Show more

Peter ONeill

Peter ONeill

Peter O'Neill is a Solutions Engineering Manager at Teleport, specializing in identity-aware access control and zero-trust security architectures for enterprise customers. With expertise spanning PKI infrastructure, reverse proxies, OAuth2/OIDC, and Kubernetes security patterns, he helps organizations modernize their authorization systems. Peter's work focuses on high-security environments, where he designs solutions using enterprise identity providers to enable fine-grained access control.

Peter O'Neill is a Solutions Engineering Manager at Teleport, specializing in identity-aware access control and zero-trust security architectures for enterprise customers. With expertise spanning PKI infrastructure, reverse proxies, OAuth2/OIDC, and ... Show more

Tiago Costa

Tiago Costa

Tiago Costa is a Senior AI & Cloud Architect and Advisor, focusing on AI & Microsoft Azure, a Public Speaker, Trainer, and Author. For the past +20 years has been architecting and developing solutions using Microsoft technologies. In recent years, Tiago has been helping companies migrate and build AI & cloud-native workloads on Microsoft Azure. Tiago has been working at the Senior Architect level, but he always likes to take on some hands-on tasks on the Azure Administration and Development side. You can also find him in the classroom or online teaching AI & Microsoft Azure. All this real-world experience enables him to deliver outstanding training in AI & Microsoft Azure.

Tiago has several Microsoft Certifications and awards:
- Microsoft Azure MVP (2016 – …)
- MCT – Microsoft Certified Trainer (2006 – …)
- MCT Community Lead (2013 – …)

He loves diving into new technologies and sharing his experience at conferences and training classes. What excites him about his work is helping others explore new frontiers in technology and becoming better professionals. His free time is spent with his family in the sunny surroundings of Lisbon, Portugal, and building cool geek projects.

Tiago Costa is a Senior AI & Cloud Architect and Advisor, focusing on AI & Microsoft Azure, a Public Speaker, Trainer, and Author. For the past +20 years has been architecting and developing solutions using Microsoft technologies. In recent years, Ti... Show more

Mackenzie Jackson

Mackenzie Jackson

Mackenzie is the Field CTO for Aikido Security, helping tech leaders understand application security through an attacker’s lens. As the co-founder and former CTO of the health tech company Conpago, he understands the challenges of building secure applications. Mackenzie has spoken in over 30 countries, hosts popular podcast The Secure Disclosure, and contributes to multiple publications including Dark Reading, Financial Times, and Fast Company.

Mackenzie is the Field CTO for Aikido Security, helping tech leaders understand application security through an attacker’s lens. As the co-founder and former CTO of the health tech company Conpago, he understands the challenges of building secure app... Show more

Sagar Das

Sagar Das

Sagar is a Staff Android Engineer who has been building apps for 11 years now. He is also a Google developer expert in Android and a co-organizer for Google Developer Groups at Boston and enjoys educating for the mobile dev community.

Sagar is a Staff Android Engineer who has been building apps for 11 years now. He is also a Google developer expert in Android and a co-organizer for Google Developer Groups at Boston and enjoys educating for the mobile dev community. Show more

Kevin Griffin

Kevin Griffin

Kevin Griffin has been running production .NET applications and teaching developers for over two decades. A Microsoft MVP specializing in .NET and Microsoft Azure, Kevin brings real-world experience from consulting and his own SaaS products. He's hosted the Hampton Roads .NET User Group since 2009 and founded RevolutionVA, a nonprofit supporting software development education in southeast Virginia. Kevin's talks blend hard-won lessons from production systems with practical advice you can use Monday morning.

Kevin Griffin has been running production .NET applications and teaching developers for over two decades. A Microsoft MVP specializing in .NET and Microsoft Azure, Kevin brings real-world experience from consulting and his own SaaS products. He's hos... Show more

Carlo Lucera

Carlo Lucera

Known as HatDroid, is a Technology enthusiast, former Android, and now Flutter developer, always in search of new technologies and strategies to improve.
Flutter Google Developer Expert and Full-time Flutter Developer @Pvotal technologies and admin for Flutter Italia Developers.
Always ready to share his experiences and working hard to help the Developer communities grow.

Known as HatDroid, is a Technology enthusiast, former Android, and now Flutter developer, always in search of new technologies and strategies to improve. Flutter Google Developer Expert and Full-time Flutter Developer @Pvotal technologies and admin ... Show more

Nico Vermeir

Nico Vermeir

Nico Vermeir is a Cloud Solution Architect at Microsoft, where he has a strong focus on application innovation and AI.

Being a strong believer in the importance of communities he tries to share knowledge wherever he can, be it on BlueSky, at a user group or conference. He has spoken on many international conferences such as NDC Oslo, NDC Sydney, NDC London, Swetugg, Build Stuff, DotNext.
Nico is a former Microsoft MVP in Developer Technologies, crew member of Techorama BE and NL and crew member of VISUG, Belgium's largest .NET user group.

In his spare time he enjoys brewing (and tasting) beer, playing the guitar, riding his Harley-Davidson and doing Karate.

Nico Vermeir is a Cloud Solution Architect at Microsoft, where he has a strong focus on application innovation and AI. Being a strong believer in the importance of communities he tries to share knowledge wherever he can, be it on BlueSky, at a use... 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

Michael Coté

Michael Coté

Michael Coté studies how large organizations improve how they build software to run and grow their business. His books Changing Mindsets, Monolithic Transformation, and The Business Bottleneck cover these topics. He’s been an industry analyst at RedMonk and 451 Research, done corporate strategy and M&A, and was a programmer. He also co-hosts several podcasts, including Software Defined Talk. His daily-ish newsletter is at newsletter.cote.io.

Michael Coté studies how large organizations improve how they build software to run and grow their business. His books Changing Mindsets, Monolithic Transformation, and The Business Bottleneck cover these topics. He’s been an industry analyst at RedM... Show more

René van Osnabrugge

René van Osnabrugge

As GCD of Xebia Microsoft Services, Rene enables consultants to help organizations and leadership teams to build an engineering culture that allows them to build, deliver, and operate software in a secure and compliant way. With a focus on both the technical and cultural aspects of a company, Rene helps clients transform their work processes, operating model, and culture to become high-speed, innovative, and productive.

Rene is passionate about learning new technologies and exploring the cultural and people aspects of companies. He believes that by focusing on both technical implementation and cultural development, we can drive our industry forward. He loves sharing his knowledge and insights at conferences and training events.

As a frequently asked speaker at well-known industry events like GitHub Universe, NDC, Techorama, AllDayDevOps, NDC, and Visual Studio Live!, Rene is known for his expertise in Microsoft Azure, DevOps and DevOps Culture. In addition to being a Microsoft MVP since 2012, he is also the founder of the popular community event Global DevOps Bootcamp.

As GCD of Xebia Microsoft Services, Rene enables consultants to help organizations and leadership teams to build an engineering culture that allows them to build, deliver, and operate software in a secure and compliant way. With a focus on both the t... Show more

Jérôme Urvoas

Jérôme Urvoas

Jérôme is a professional coach, agile coach, facilitator and trainer.
For 19 years, he has been one of the pioneers who have develop an agile culture within Lectra teams. He is now in charge of a team of internal coaches that he created and who support his company in its many changes.
Passionate about human dynamics, he has developed over the years an expertise in the fields of agility, change management and the management of teams and organizations.
Active member of the Agile community and of the European Mentoring and Coaching Council France, he likes to share his experience and his convictions through conferences and training.

Jérôme is a professional coach, agile coach, facilitator and trainer. For 19 years, he has been one of the pioneers who have develop an agile culture within Lectra teams. He is now in charge of a team of internal coaches that he created and who supp... Show more

James Reeves

James Reeves

Data enthusiast on a mission to make cost effective data platforms accessible to all while navigating the whims of an ADHD-powered mind – it's a bit like juggling flaming torches while riding a unicycle, but he makes it work!

Data enthusiast on a mission to make cost effective data platforms accessible to all while navigating the whims of an ADHD-powered mind – it's a bit like juggling flaming torches while riding a unicycle, but he makes it work! Show more

Gerrit Grunwald

Gerrit Grunwald

Gerrit Grunwald is a software engineer that loves coding for around 40 years already. He is a true believer in open source and he is an active member of the Java community, where he founded and leads the Java User Group Münster (Germany), he is a JavaOne rockstar and a Java Champion. He is a speaker at conferences and user groups internationally and writes for several magazines.

Gerrit Grunwald is a software engineer that loves coding for around 40 years already. He is a true believer in open source and he is an active member of the Java community, where he founded and leads the Java User Group Münster (Germany), he is a Jav... Show more

Sameer Mhaisekar

Sameer Mhaisekar

I'm the founder organizer of Experts Live India, organizing physical and online conferences. I also host a tech/semi tech podcast, Experts Live India podcast.

I'm a 3x Microsoft MVP and been awarded Azure content hero and Azure community hero badgers by Microsoft.

I'm active in the Copilot, Power Platform and Governance space.

I'm the founder organizer of Experts Live India, organizing physical and online conferences. I also host a tech/semi tech podcast, Experts Live India podcast. I'm a 3x Microsoft MVP and been awarded Azure content hero and Azure community hero badg... Show more

Mohamed Wali

Mohamed Wali

Mohamed is working as a Senior Solutions Architect for AWS Solutions Architecture team based out of Amsterdam, Netherlands. He is a subject matter expert in Cloud Architecture helping the customers scale their use of AWS safely and securely, accelerate their adoption of cloud and driving the value of their investment in AWS while acting as a technical liaison between customers and product teams to help evolve the AWS platform.

Mohamed is working as a Senior Solutions Architect for AWS Solutions Architecture team based out of Amsterdam, Netherlands. He is a subject matter expert in Cloud Architecture helping the customers scale their use of AWS safely and securely, accelera... Show more

Diana Pham

Diana Pham

With a high spirit and a low sense of mortality, Diana completed her master’s in CS despite never having coded before grad school. Through her passion for learning and teaching tech, she found her calling in advocacy, where she exercises her creativity through conference talks and content creation. Her hobbies include snowboarding, competing in beauty pageants, making lifestyle content on IG (@cachefeelings_), and finding the best happy hours.

With a high spirit and a low sense of mortality, Diana completed her master’s in CS despite never having coded before grad school. Through her passion for learning and teaching tech, she found her calling in advocacy, where she exercises her creativi... Show more

Karl Groves

Karl Groves

With 20 years of experience in web development, usability, and accessibility, Karl Groves is widely regarded as a pragmatic solution-finder and thought leader in the accessibility industry. In his role as accessibility consultant at AFixt, Karl focuses on pragmatic and efficient ways of improving the accessibility of websites and software.

With 20 years of experience in web development, usability, and accessibility, Karl Groves is widely regarded as a pragmatic solution-finder and thought leader in the accessibility industry. In his role as accessibility consultant at AFixt, Karl focus... Show more

Allan Hirt

Allan Hirt

Business continuity, infrastructure, virtualization, and cloud expert, author, bass player who has charted with his last two albums, Styxologist, former Microsoft MVP and VMware vExpert, and SQLHA founder Allan Hirt has been working with SQL Server as well as clustering in Windows Server for far too long. He currently works for Microsoft as a Principal Technical Program Manager.

Business continuity, infrastructure, virtualization, and cloud expert, author, bass player who has charted with his last two albums, Styxologist, former Microsoft MVP and VMware vExpert, and SQLHA founder Allan Hirt has been working with SQL Server a... Show more

Ioana Bouariu

Ioana Bouariu

AI, BI and everything data. Fabric admin. Automation enthusiast. Co-pilot in a crew of 5.

AI, BI and everything data. Fabric admin. Automation enthusiast. Co-pilot in a crew of 5. Show more

Scott Shearer

Scott Shearer

Scott Shearer is a Microsoft 365 evangelist, former Microsoft MVP (8 years) and MCT. Scott has over 35 years' experience in the IT industry implementing Microsoft products and technologies. He has held positions ranging from systems administrator to developer to trainer. Scott is a regular speaker at M365 community events and a top contributor to the Microsoft Power Automate Power Users Community site.

Scott Shearer is a Microsoft 365 evangelist, former Microsoft MVP (8 years) and MCT. Scott has over 35 years' experience in the IT industry implementing Microsoft products and technologies. He has held positions ranging from systems administrator to ... Show more

Fabrice Bloch

Fabrice Bloch

Statisticien public, agiliste militant, formateur en design-thinking et en leadership

Statisticien public, agiliste militant, formateur en design-thinking et en leadership Show more

Natalie Johnson

Natalie Johnson

Natalie Johnson is a renowned consultant, performance coach, author and business motivational speaker with over three decades of experience transforming cultures worldwide. As the Co-founder and Chief Visionary of Vidl Work, Natalie specializes in optimizing organizational performance by increasing energy, fostering team connections, and developing courageous leaders.

With a background in human performance, including psychology, physiology, and resilience, Natalie is a sought-after speaker and trainer, known for her engaging, high-energy presentations. Her impactful work has earned her numerous accolades, including the Enterprising Women of the Year Award, Champion of Healthcare, and Business Leader Woman Extraordinaire.

Natalie's dynamic speaking style and expertise in topics such as intentional culture, leadership development, and effective communication have made her a respected figure in the business world. Her ability to inspire and empower audiences to achieve their full potential has made her a valuable asset to organizations seeking to thrive in today's competitive landscape.

Natalie Johnson is a renowned consultant, performance coach, author and business motivational speaker with over three decades of experience transforming cultures worldwide. As the Co-founder and Chief Visionary of Vidl Work, Natalie specializes in op... Show more

Tobias Fenster

Tobias Fenster

Tobias Fenster started as a developer in the 1990s. Holding different positions including Head of Technical Consulting, Head of Development and CTO for multiple Microsoft partners during his career, he is now a Managing Director at 4PS Germany and Chief Engineer at Hilti. He is also a Microsoft Regional Director, holds dual Microsoft MVP awards for Business Applications and Azure and is a Docker Captain.

He is blogging on tobiasfenster.io, where he writes about Business Applications, Docker and Windows Containers, but also tooling like Azure DevOps, Visual Studio Code and infrastructure automation. His other focus is Azure, mainly around container environments and SQL.

Tobias Fenster started as a developer in the 1990s. Holding different positions including Head of Technical Consulting, Head of Development and CTO for multiple Microsoft partners during his career, he is now a Managing Director at 4PS Germany and Ch... Show more

Ben Kadel

Ben Kadel

Developer, Presenter/Teacher, Open source advocate, Ultimate frisbee player & Board game hoarder.
I love the fact that I get to code for a living, but I am also incredibly passionate about sharing, collaborating and helping others on their dev journey!
I also have a growing YouTube channel (youtube.com/benkadel), where I try to make entertaining & educational content about programming, the tech industry and specific tutorials to breakdown complex topics.
I adore presenting, story-telling and just generally engaging with an audience. If I am able to make life, even just a little brighter for someone then I have succeeded!

Developer, Presenter/Teacher, Open source advocate, Ultimate frisbee player & Board game hoarder. I love the fact that I get to code for a living, but I am also incredibly passionate about sharing, collaborating and helping others on their dev journ... Show more

Stefan van der Wiele

Stefan van der Wiele

With over 15 years of experience Stefan has proven himself an expert on all things identity. Thanks to his designing and implementing skills in complex identity solutions he knows how to translate a business case into a technical solution.

Stefan is a speaker at multiple small and big Microsoft and non-Microsoft events focusing on identity and the cloud. He explains to all who need to know how identity works and how and why we need to protect it.

With over 15 years of experience Stefan has proven himself an expert on all things identity. Thanks to his designing and implementing skills in complex identity solutions he knows how to translate a business case into a technical solution. Stefan... Show more

Joy Apple

Joy Apple

Joy Apple is a Microsoft MVP and Director of Partner and Customer Success at Orchestry.
As a seasoned information technologist, Joy strives to ensure technology is implemented with a purpose-driven, “human-first” approach. Teaching is one of her passions, and Joy finds personal and professional fulfillment volunteering in the Microsoft Community, speaking and educating others on best practices for success with Microsoft 365.
During her time as a SharePoint/Microsoft 365 consultant and trainer Joy has had the opportunity to work across industries, including government and our armed services.
When Joy isn’t working with the Orchestry team or speaking or writing as the “Joy of SharePoint,” she can probably be found at a music venue or the newest fun spot in Tulsa, Oklahoma.

Joy Apple is a Microsoft MVP and Director of Partner and Customer Success at Orchestry. As a seasoned information technologist, Joy strives to ensure technology is implemented with a purpose-driven, “human-first” approach. Teaching is one of her pa... Show more

Nikola Mitrović

Nikola Mitrović

Seasoned software engineer with experience that spans nearly a decade, with technical expertise in micro-frontend architecture and web performance. Enthusiastic public speaker with a passion for crafting exceptional web experiences. Business domain expertise in areas like EdTech, HealthTech and Digital Identity.

For the last couple of years in leadership roles, inspiring a culture of technical excellence, continuous learning, collaboration and psychological safety within the organization. Leading with empathy, honesty and passion, empowering team with trust and autonomy.

Seasoned software engineer with experience that spans nearly a decade, with technical expertise in micro-frontend architecture and web performance. Enthusiastic public speaker with a passion for crafting exceptional web experiences. Business domain e... Show more

Matthias Geisler

Matthias Geisler

Hey I am Matthias and I work for some time now already in Tech. I use Kotlin Multiplatform before it was Multiplatform and build mostly things for Android. I co-organize some staff in Berlin like the KUG Berlin, Berlindroid, XTC Berlin and more. And of course I study as most currently the pearls of AI.

Hey I am Matthias and I work for some time now already in Tech. I use Kotlin Multiplatform before it was Multiplatform and build mostly things for Android. I co-organize some staff in Berlin like the KUG Berlin, Berlindroid, XTC Berlin and more. And ... Show more

Lesley Crook

Lesley Crook

Help people adopt AI in a way that feels human with "lived intelligence", common sense, empathy. Nurture moving teams from fear of AI to curiosity, creativity, and confident collaboration.

Lead Microsoft Copilot adoption through a people‑first launch, communications, and Champion networks, surfacing real success stories and demonstrating clear value and ROI.

Coach individuals and small businesses to use free, open‑source AI responsibly and creatively.

Founder of MVP Viva Explorers, creator of Viva Origami, and architect of a Microsoft‑endorsed Viva Wayfinder onboarding experience. Co‑author of the adoption chapter in "Microsoft Teams Administration Cookbook", and a regular Microsoft event speaker and blogger.

MVP for 11 years. MCT for 1 year; AB-731 Certification. 15 years at GSK Communications. Proudly “the commsiest person in tech and the techiest person in comms.”

Help people adopt AI in a way that feels human with "lived intelligence", common sense, empathy. Nurture moving teams from fear of AI to curiosity, creativity, and confident collaboration. Lead Microsoft Copilot adoption through a people‑first la... Show more

Please note that Sessionize is not responsible for the accuracy or validity of the data provided by speakers.

Most Active Speakers 2023

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 2023.

The 3% is calculated from the pool of all speakers that have at least one accepted session in year 2023. We don't include inactive speakers or speakers that had no accepted sessions during the year. There are around 25 thousand unique accepted speakers this year, the 3% is 771. 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 2023. 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.