Most Active Speakers 2025

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

  • 1125 speakers
  • Auto-generated
Alex Soto

Alex Soto

Alex Soto is a Developer Advocate at IBM. He is passionate about the Java world and software automation and believes in the open-source software model. Alex is the co-author of Manning and O'Reilly books Testing Java Microservice, Quarkus Cookbook, Kubernetes Secrets Management, GitOps Cookbook, RHCE Ansible Automation Study Guide, Applied AI for Enterprise Java Development, and AI Agents with Java.

Recognized as a Java Champion and Microsoft MVP, he is also an international speaker (Devoxx, KubeCon, DevNexus, JavaOne, JavaLand, ...) and a teacher at Salle URL University. You can follow him on Twitter (@alexsotob) to stay tuned to what's happening in Java.

Alex Soto is a Developer Advocate at IBM. He is passionate about the Java world and software automation and believes in the open-source software model. Alex is the co-author of Manning and O'Reilly books Testing Java Microservice, Quarkus Cookbook, K... Show more

Alessio Iafrate

Alessio Iafrate

Passionate about all things technological and a programmer for 20 years.
He started in the Java enterprise field and arrived in the .NET world as early as version 1.1 of the framework.
He works as a freelancer for various companies between Abruzzo and Lazio, especially in the web sector, but has an enormous passion for the mobile world, especially in the smartphone sector.
Founder of the Dotnet Abruzzo community in which he acts as speaker and event organizer and active member of DotNetCode
MVP since 2016 in the Windows Development category

Passionate about all things technological and a programmer for 20 years. He started in the Java enterprise field and arrived in the .NET world as early as version 1.1 of the framework. He works as a freelancer for various companies between Abruzzo ... Show more

Ashraf Ghonaim

Ashraf Ghonaim

Ashraf Ghonaim is a Strategic Management Consultant and his core areas of expertise are: Strategy Management, Performance Measurement, Process Improvement and Data Analytics.

Ashraf holds a Computer Engineering degree and an MBA degree in Strategic Management with special emphasis on IT-Business Strategic Alignment using Balanced Scorecard. He is also a certified Balanced Scorecard Professional, Lean Six Sigma Black Belt, Project Management Professional (PMP).

Ashraf is the leader of Toronto Fabric & Power BI User Group and he has been a Microsoft MVP in Data Platform (Fabric & Power BI) since 2018. He is also a Microsoft Certified Trainer MCT and he teaches Fabric and Power BI courses at the University of Calgary. Ashraf is a co-author of 2 books about Power BI and Microsoft AI and he is a frequent community events organizer and speakers around Fabric and Power BI.

Ashraf Ghonaim is a Strategic Management Consultant and his core areas of expertise are: Strategy Management, Performance Measurement, Process Improvement and Data Analytics. Ashraf holds a Computer Engineering degree and an MBA degree in Strategi... Show more

Laze Janev

Laze Janev

I'm a Dynamics 365 Solution Architect with over 15 years of experience in relevant Microsoft technologies. I have designed, developed, and supported numerous Dynamics 365 implementations globally. My work includes defining standards, guiding distributed teams, integrating ERP solutions, and implementing Dynamics 365 for Finance and Operations projects.
I love Power Platform, especially Power BI. I have worked extensively in its next evolution as Microsoft Fabric combined with Copilot to bring real value to the business. That is something that I keep on doing with Power Automate with approvals and integrations eliminating 3rd party middleware.
As an MCT I have helped Microsoft to develop and deliver training worldwide for Microsoft to its staff and the partner channel.
As a Dynamics 365 Solution Architect, I’m like a Swiss Army knife for business processes. I slice through inefficiencies, debug tangled workflows, and occasionally open a bottle of celebratory virtual champagne. 🍾🔧💼

I'm a Dynamics 365 Solution Architect with over 15 years of experience in relevant Microsoft technologies. I have designed, developed, and supported numerous Dynamics 365 implementations globally. My work includes defining standards, guiding distribu... Show more

Feline Parein

Feline Parein

Feline Parein is a business consultant with a big focus on all things Microsoft. She’s a certified Power Platform consultant and has hands-on experience with setting up enterprise-level applications and processes within the Power Platform.

Feline Parein is a business consultant with a big focus on all things Microsoft. She’s a certified Power Platform consultant and has hands-on experience with setting up enterprise-level applications and processes within the Power Platform. Show more

Piotr Trębacz

Piotr Trębacz

Piotr is a Senior DevOps Manager in the casino industry, championing North Star thinking, Continuous Improvement, and Measurable Outcomes - to transform troubled software and processes into modern standards. He's specialty is combining hard technical skills and soft leadership pragmatism with high agency & Over the past 13 years, he's led $1M+ digital transformations, scaled platform engineering across hundreds of developers and thousands of microservices on AWS/GCP at a time across Air Defense, Gaming, Banking, Logistics, Fuel, Mars Rovers and Gambling & Industry 4.0.

He achieved that with Second Brain of almost 7000 hand-gardened notes bringing unconventional outside-in perspective like his maverick mantras: "Culture Eats Strategy," "Velocity Wins," and "Automation Is Oxygen".

Off-duty, find him in Hawaiian shirts, Game Mastering RPGs, tinkering in his rapid prototyping workshop, or optimizing board game tactics with probability.

Trusted as Code Europe Program Committee member, Ex-GDG Organizer, and speaker, he happily mentors younger experts sharing battle-tested insights.

Piotr is a Senior DevOps Manager in the casino industry, championing North Star thinking, Continuous Improvement, and Measurable Outcomes - to transform troubled software and processes into modern standards. He's specialty is combining hard technical... Show more

Christopher Schmidt

Christopher Schmidt

Christopher Schmidt is a Principal Program Manager with deep expertise in real-time data systems, specializing in message streaming and event-driven architectures. At the forefront of Microsoft’s efforts in modern data platforms, Christopher has led initiatives that transform how organizations harness streaming data for intelligent, scalable decision-making. His work spans resilient, low-latency pipelines to AI-led consumption technologies. 

Christopher Schmidt is a Principal Program Manager with deep expertise in real-time data systems, specializing in message streaming and event-driven architectures. At the forefront of Microsoft’s efforts in modern data platforms, Christopher has led ... Show more

Cedric Clyburn

Cedric Clyburn

Cedric Clyburn (@cedricclyburn), Senior Developer Advocate at Red Hat, is an enthusiastic software developer with a background in Kubernetes, DevOps, and container tools. Focused on open-source software, he both contributes (e.g., Podman, vLLM) and enjoys speaking, with prior experience at Devoxx, WeAreDevelopers, The Linux Foundation, and more. Cedric also spends (too much) time creating video and written content helping developers learn new topics in emerging technologies, with over 2M+ views online. He’s based in New York City and is an organizer of the local Kubernetes Community Day.

Cedric Clyburn (@cedricclyburn), Senior Developer Advocate at Red Hat, is an enthusiastic software developer with a background in Kubernetes, DevOps, and container tools. Focused on open-source software, he both contributes (e.g., Podman, vLLM) and e... Show more

Eduard Keilholz

Eduard Keilholz

Eduard Keilholz is a seasoned software developer and cloud architect at 4Dotnet, where he specializes in Microsoft development and cloud technologies. With a passion for helping organizations build highly performant cloud software solutions, Eduard has made significant contributions in the field of cloud architecture.

He is the author of the book Azure Infrastructure as Code, which delves into infrastructure automation using Azure, and is a frequent international conference speaker. Eduard is also the founder of the DotnetFriday meetup platform, a community initiative hosted in the Netherlands that fosters collaboration and learning among .NET professionals.

In addition to his development and community activities, Eduard created SpreaView, a platform designed to give conference organizers and speakers deeper insights into their performance by automating speaker evaluations. His contributions to the Microsoft community have earned him the prestigious title of Microsoft MVP since 2020.

Eduard Keilholz is a seasoned software developer and cloud architect at 4Dotnet, where he specializes in Microsoft development and cloud technologies. With a passion for helping organizations build highly performant cloud software solutions, Eduard h... Show more

Sofía Platas

Sofía Platas

Hey! You’ve reached Sofia — I turn Azure, Power Platform, and Dynamics 365 into your business’s superhero cape. Sorry I missed your call; leave a message and I’ll architect your rescue plan ASAP!

Hey! You’ve reached Sofia — I turn Azure, Power Platform, and Dynamics 365 into your business’s superhero cape. Sorry I missed your call; leave a message and I’ll architect your rescue plan ASAP! Show more

José Coignard

José Coignard

Je suis l'un des tous premiers Français à être devenu formateur professionnel avec ProKanban.org.

J'ai 20ans d'expérience dans différents domaines (Bancaire, RH, Data, Handicap etc.), principalement dans l'IT et la création de produit numérique. J'ai été développeur, maitrise d'ouvrage, chef de projet, manager et depuis une dizaine d'année Coach agile.

Je suis convaincu que l'optimisation du flux est essentielle pour la réussite d'une entreprise et pour l'amélioration des politiques RSE.

J'adore transmettre mes connaissances et faire grandir les autres, alors rejoignez moi dans l'une de mes formations.

Je suis l'un des tous premiers Français à être devenu formateur professionnel avec ProKanban.org. J'ai 20ans d'expérience dans différents domaines (Bancaire, RH, Data, Handicap etc.), principalement dans l'IT et la création de produit numérique. J... Show more

Tasha Anspach

Tasha Anspach

Tasha Anspach is a distinguished consultant with a deep acumen in D365 Business Central & Power Platform. Drawing from her experience in Dynamics SL support, ISV assistance, and crafting solutions for multifaceted industry scenarios, Tasha guides businesses towards transformative success. She is not only a beacon of sales and technological expertise but also harbors a whimsical passion for unicorns, symbolizing her unique approach to business solutions. Tasha champions organizations to realize their fullest potential through technology.

Tasha Anspach is a distinguished consultant with a deep acumen in D365 Business Central & Power Platform. Drawing from her experience in Dynamics SL support, ISV assistance, and crafting solutions for multifaceted industry scenarios, Tasha guides bus... Show more

Julia Kordick

Julia Kordick

Julia is a Software Global Black Belt at Microsoft, helping large-scale organizations accelerate dev workflows through pragmatic, end-to-end platform engineering. With a background as a Software Engineer, Dev Lead, and Cloud Solution Architect, she speaks fluent developer and management—and knows how to bridge the gap without losing either side in translation.

She’s a big-picture thinker who also loves to understand the details. Web and frontend will always have a place in her ❤️.

Outside work, Julia is a gamer, a proud fahrradmaus, and a former quarterback for a women’s American football team (yes, really).

Julia is a Software Global Black Belt at Microsoft, helping large-scale organizations accelerate dev workflows through pragmatic, end-to-end platform engineering. With a background as a Software Engineer, Dev Lead, and Cloud Solution Architect, she s... Show more

María Soto Castro

María Soto Castro

Apasionada de la tecnología y del marketing, actualmente, obsesionada con Chat GPT.
GlobalAI Bootcamp | W4TT

Apasionada de la tecnología y del marketing, actualmente, obsesionada con Chat GPT. GlobalAI Bootcamp | W4TT Show more

Dubravko Bogović

Dubravko Bogović

I am an electrical engineer turned programmer. I love new technologies, smart homes and renewable energy as well as Science Fiction and fantasy and board games. I love making quizzes for conventions and playing board game tournaments or just attending a game day.
Also love badminton and everything related to it.

I am an electrical engineer turned programmer. I love new technologies, smart homes and renewable energy as well as Science Fiction and fantasy and board games. I love making quizzes for conventions and playing board game tournaments or just attendin... Show more

Luis Beltran

Luis Beltran

I'm a Microsoft MVP in Azure, Artificial Intelligence, and Developer Technologies. I am currently pursuing a PhD in Engineering Informatics at Tomas Bata University in Zlin, Czech Republic.

I've been developing .NET apps for +10 years. I find C# a really powerful language which allow us to create different kinds of software. I focus on mobile apps (Xamarin/.NET MAUI), cloud computing (Azure) and AI.

I enjoy sharing my knowledge with others.

I'm a Microsoft MVP in Azure, Artificial Intelligence, and Developer Technologies. I am currently pursuing a PhD in Engineering Informatics at Tomas Bata University in Zlin, Czech Republic. I've been developing .NET apps for +10 years. I find C# a... 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

Mitchel Sellers

Mitchel Sellers

Mitchel Sellers is globally known as a 17-time Microsoft MVP, an ASPInsider, a DNN MVP, is an MCP (Microsoft .NET, ASP.NET and SQL Server), and CEO of IowaComputerGurus Inc. Sellers has a deep understanding of software development and when speaking focuses on proper architecture standards, performance, stability, security, and overall cost-effectiveness of delivered solutions. This message and his abilities resonate in the technical war room as well as the executive board room.

Mitchel is a prolific public speaker, presenting more than 400 sessions at user groups and conferences globally, such as DevUp, SDN, and Code PaLOUsa. Sellers has been the author of multiple books and a regular blogger on technology topics.

When Mitchel is not working in technology, you will find him flying his airplane, teaching others how to fly, or spending time with his family He is also actively involved in the Open Source Community working diligently to further the movement. Find out more about Sellers at his website http://www.mitchelsellers.com.

Mitchel Sellers is globally known as a 17-time Microsoft MVP, an ASPInsider, a DNN MVP, is an MCP (Microsoft .NET, ASP.NET and SQL Server), and CEO of IowaComputerGurus Inc. Sellers has a deep understanding of software development and when speaking f... Show more

Kevin Arnold

Kevin Arnold

Kevin Arnold is the Founder of Arnold Analytics, overseeing software management methodologies, deployment strategy, and optimal data architectures for clients. He is a senior data architect with over 20 years’ experience, including at large-cap and SMB consultancies. His work focuses on the Modern Microsoft BI Stack including Power BI, Analysis Services, SQL Server, PowerShell, DevOps, Azure, and Power Query.

He is a co-leader and frequent presenter for the Dallas/Fort Worth Power BI User Group, as well as presenting at conferences and other user groups. He has been recognized by Microsoft as a Data Platform MVP in 2022.

Kevin Arnold is the Founder of Arnold Analytics, overseeing software management methodologies, deployment strategy, and optimal data architectures for clients. He is a senior data architect with over 20 years’ experience, including at large-cap and S... Show more

Lars Klint

Lars Klint

Lars is a Principal Developer Advocate at Atlassian, an author, trainer, Microsoft Azure MVP, community leader, aspiring YouTube host and part time classic car collector. He is heavily involved in the space of cloud computing services, especially Azure, and is a published author, solution architect and writer for numerous publications. He has been a part of the software development community for the past 20 years and co-organises the DDD Melbourne community conference, organises developer events with Microsoft, and also runs a part time car restoration business. He has spoken at numerous technical events around the world and is an expert in Australian Outback Internet.

Lars is a Principal Developer Advocate at Atlassian, an author, trainer, Microsoft Azure MVP, community leader, aspiring YouTube host and part time classic car collector. He is heavily involved in the space of cloud computing services, especially Azu... Show more

Gaston Cruz

Gaston Cruz

Microsoft Most Valuable Professional (MVP) in Data Platform for the last 9 years and MVP in AI.

Over 20 years of experience in business and technology working with organizations at various stages of digital transformations. Over the years, worked with several industry sectors including Retail, Banking, Minery, Oil & Gas, and Media/Entertainment. Also led several products and applications that have been in the cusp of data, strategy, technology, and business transformation. Passion for data , emerging technologies and new offerings enables clients to make fact-based decisions and drive actions in the market together.​

Provided recommendations and guidance on revamping Analytics and Reporting enterprise architecture for different companies in helping drive a Customer Data Exchange working closely with the C-Suite to help them design their New Data Services Organization with Data Products. Stood up new capabilities required to effectively operate and move toward Data Monetization using advanced Data consolidation and Data Sharing capabilities focusing on Privacy/Compliance and Data Governance

YouTube channel Power Mates: https://www.youtube.com/@PowerMatesMS

Microsoft Most Valuable Professional (MVP) in Data Platform for the last 9 years and MVP in AI. Over 20 years of experience in business and technology working with organizations at various stages of digital transformations. Over the years, worked ... Show more

Sven Peters

Sven Peters

Sven Peters, AI evangelist at Atlassian, has been studying trends in software development for the last 15 years, uncovering the cultural and technical attributes to help development teams work effectively and drive innovation. He has 20 years of experience in writing code, leading teams, and sharing his experience with thousands of developers at countless conferences in 25+ countries.

Sven Peters, AI evangelist at Atlassian, has been studying trends in software development for the last 15 years, uncovering the cultural and technical attributes to help development teams work effectively and drive innovation. He has 20 years of expe... Show more

Khaled Chowdhury

Khaled Chowdhury

"Accidental Data Professional" started in finance and found a passion for analytics that, through a series of fortunate accidents, transformed me from Finance Director to Chief Data Officer. Now at Data Crafters, my team and I are bringing the power of Microsoft Fabric and Power BI into our customers' hands—creating visibility, enabling better decision-making, and freeing people from manual data drudgery. Together, we're transforming how organizations leverage data to achieve sustainable growth and success.

"Accidental Data Professional" started in finance and found a passion for analytics that, through a series of fortunate accidents, transformed me from Finance Director to Chief Data Officer. Now at Data Crafters, my team and I are bringing the power ... Show more

Mario-Leander Reimer

Mario-Leander Reimer

Passionate software developer and architect. Proud father. #CloudNativeNerd. Leander is the CTO at QAware. He’s continuously looking for innovations in software engineering and ways to combine and apply state-of-the-art technology in real-world projects. As a speaker at national and international conferences he shares his tech experiences and he teaches cloud computing and software quality assurance as a part-time lecturer.

Passionate software developer and architect. Proud father. #CloudNativeNerd. Leander is the CTO at QAware. He’s continuously looking for innovations in software engineering and ways to combine and apply state-of-the-art technology in real-world proje... Show more

Oliver Engels

Oliver Engels

Oliver Engels is CEO of oh22data AG, a Microsoft Data & AI Partner in Germany specialized in CRM, Data and AI. His interests are on Azure, Data Governance and Integration, AI and Visualization Tools like Power BI and Tableau. Oliver has worked with SQL Server since version 6.5 and is a founding member and current president of German Microsoft Data Platform Community (Datamonster e.V.) and runs the Frankfurt Datamonster Chapter (Hord). Since 2012 he is a Microsoft Data Platform MVP and a also worked as a Microsoft pTSP. If he is not working with data, he loves working with his Golden Retrievers and supports a charity project training dogs for disabled children. OK, he is an enthusiastic Land Rover Defender driver as well 😊

Oliver Engels is CEO of oh22data AG, a Microsoft Data & AI Partner in Germany specialized in CRM, Data and AI. His interests are on Azure, Data Governance and Integration, AI and Visualization Tools like Power BI and Tableau. Oliver has worked with S... Show more

Daniel Rohregger

Daniel Rohregger

Daniel is a international Speaker covering topic all around Microsoft 365. With a big focus on Copilot, Adoption and Modern Workplace he loves what he does. With large to medium Enterprises from EMEA he get's experience from the real world and combines that with the passion for technology.

💼 M365 Copilot MVP
💼 AI, Hybrid Work, Teams and Modern Work-Freak
💼 Speaker and Instructor for Microsoft 365 Services
🎓 Certified ScrumMaster, Bachelor Professional for Project Organisation (CCI)

🌇 Regensburg, Germany near Munich area

Daniel is a international Speaker covering topic all around Microsoft 365. With a big focus on Copilot, Adoption and Modern Workplace he loves what he does. With large to medium Enterprises from EMEA he get's experience from the real world and combin... Show more

Carl Sargunar

Carl Sargunar

I've been building websites and apps for various clients for the last 20 years, from running agencies to direct clients, and generally integrating the heck out of systems. I enjoy learning new things and sharing what I've learnt, and I organise the Bristol and South West .NET Meetup, as well as the DDD South West Conference.

I've been building websites and apps for various clients for the last 20 years, from running agencies to direct clients, and generally integrating the heck out of systems. I enjoy learning new things and sharing what I've learnt, and I organise the B... 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

Jake Harvey

Jake Harvey

I lead the Automation team at Advania UK and support organisations in creating technology experiences that shift the responsibility of tasks to technology and bridge the gap between data and decisions.

10+ years experience in the Microsoft Partner eco-system delivering valuable solutions for clients. 5+ years Community conference speaker at events such as the Microsoft AI Tour, European Power Platform Conference and European SharePoint Conference.

I lead the Automation team at Advania UK and support organisations in creating technology experiences that shift the responsibility of tasks to technology and bridge the gap between data and decisions. 10+ years experience in the Microsoft Partne... Show more

Lizzie Siegle

Lizzie Siegle

Lizzie serves developers in the Bay Area and beyond on Entire's developer relations team and holds a Bachelor's degree in Computer Science from Bryn Mawr. She likes JavaScript, Python, and working with AI. When not organizing or attending hackathons and meetups, she enjoys tennis, ping pong, and all things Disney.

Lizzie serves developers in the Bay Area and beyond on Entire's developer relations team and holds a Bachelor's degree in Computer Science from Bryn Mawr. She likes JavaScript, Python, and working with AI. When not organizing or attending hackathons ... 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.