Most Active Speakers 2025

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

  • 1123 speakers
  • Auto-generated
Rustam Mehmandarov

Rustam Mehmandarov

Experienced Software Engineer | Architect | Keynote & Public Speaker | Java Champion | Google Developer Expert for Cloud | Docker Captain | Oracle ACE Pro | Community Leader | Mentor | Ex-leader of JavaZone and Norwegian JUG – javaBin.

Experienced Software Engineer | Architect | Keynote & Public Speaker | Java Champion | Google Developer Expert for Cloud | Docker Captain | Oracle ACE Pro | Community Leader | Mentor | Ex-leader of JavaZone and Norwegian JUG – javaBin. Show more

Bradley Ball

Bradley Ball

Bradley Ball is a Sr. Technical Program Manager at Microsoft. He is a Microsoft MVP Reconnect member and former MVP. Bradley spent 8 years working as a Defense contractor for clients such as the U.S. Army and The Executive Office of the President of the United States, was the Data Platform Practice Manager for Pragmatic Works Consulting, and a Sr. Consultant for Microsoft Premier Support for Developers. He has presented at many SQL Saturdays, for PASS SSUG’s across the US from California to Puerto Rico to New Hampshire, SQL Rally, DevConnections, SQLBits 2015, TechReady 24, SQL Live 360 2011-2019, SQL Intersections 2019 - 2021, & the PASS Summit 2011-2015. He wrote Chapter 14 Page & Row Compression for PRO SQL Server 2012 Best Practices, he hosts the Tales from the Field Monthly Microsoft Fabric PG Live Stream and technical videos on https://www.youtube.com/@Tales-from-the-Field.

Bradley Ball is a Sr. Technical Program Manager at Microsoft. He is a Microsoft MVP Reconnect member and former MVP. Bradley spent 8 years working as a Defense contractor for clients such as the U.S. Army and The Executive Office of the President o... Show more

Oliver Engels

Oliver Engels

Oliver Engels is CEO of oh22data AG, a Microsoft Gold Partner in Germany specialized in CRM and BI. His interests are on Azure, Data Governance and Integration, Machine Learning and Visualization Tools like SSRS, 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 (PASS), a PASS Regional Mentor, and runs the Frankfurt PASS Chapter. 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 Gold Partner in Germany specialized in CRM and BI. His interests are on Azure, Data Governance and Integration, Machine Learning and Visualization Tools like SSRS, Power BI and Tableau. Oliver has work... Show more

Shadrack Kiprotich

Shadrack Kiprotich

Shadrack Kiprotich is a 3X Microsoft Most Valuable Professional (MVP) in Power Apps & Copilot Studio and a seasoned Power Platform Developer specializing in low-code, automation, and AI-driven solutions. With extensive experience architecting enterprise-grade applications at organizations in the healthcare, non-profits, banks and microfinance institutions, telcos, he has delivered transformative digital solutions that streamline operations, enhance collaboration, and integrate AI copilots into business-critical workflows.

As a Power Platform & AI Integration Lead, Shadrack has designed custom Copilot agents, automated end-to-end business processes with Power Automate, and deployed secure integrations with Dataverse, SharePoint, SQL Server, and external APIs. His expertise extends to implementing CI/CD pipelines, governance, and Application Insights monitoring for production-ready Copilot solutions.

Beyond enterprise delivery, Shadrack is an active community leader. He has trained 400+ professionals, mentored developers across Africa, spoken at international tech conferences, and led hands-on Copilot Studio workshops. He also contributes regularly to Microsoft tech communities, including Power Platform User Group Kenya, Experts Live, and the Microsoft Community Hub, where he shares best practices on Copilot, AI Builder, and Power Platform.

Shadrack is passionate about empowering organizations and individuals to adopt responsible AI and low-code technologies to drive digital transformation.

Shadrack Kiprotich is a 3X Microsoft Most Valuable Professional (MVP) in Power Apps & Copilot Studio and a seasoned Power Platform Developer specializing in low-code, automation, and AI-driven solutions. With extensive experience architecting enterpr... Show more

Dr Roushanak Rahmat

Dr Roushanak Rahmat

Roushanak is a renowned expert in AI and data science, with a strong focus on deep learning applications. She has a diverse background, having worked in both academia and industry, and has been recognised as a Google Cloud Innovator Champion. Currently, she is a data scientist lead at IBM, London.

With a PhD in AI, computer vision, and medical imaging from Heriot-Watt University, Roushanak possesses deep expertise in developing advanced algorithms and modelling. She has lecturered at Ulster University, researched at prestigious institutions such as the University of Cambridge, University of St Andrews and the Institute of Cancer Research.

Roushanak also has industry experience, having worked at Elekta, a leading medical technology company, where she was a pioneering AI expert who helped revolutionise radiotherapy by developing innovative solutions for cancer treatment. Her work had a significant impact on the field, improving patient outcomes and advancing the use of AI in healthcare.

Roushanak is a passionate advocate for education and community building in the field of AI. She is an active public speaker, tech blogger, and YouTube creator, Women in Tech Ambassador and Community Lead where she shares her insights and expertise with a wider audience. She is also a dedicated mentor, providing guidance and support to individuals inside and outside of IBM.

Roushanak has demonstrated exceptional leadership and collaboration skills, with a proven track record of leading teams and managing complex projects.

Roushanak is a renowned expert in AI and data science, with a strong focus on deep learning applications. She has a diverse background, having worked in both academia and industry, and has been recognised as a Google Cloud Innovator Champion. Current... Show more

Abdul Rasheed Feroz Khan

Abdul Rasheed Feroz Khan

Founder - CodeSizzler India | UAE
AI Engineer
9x Microsoft MVP on Azure
10x Microsoft Certified Trainer
Azure Cloud Advocate

Founder - CodeSizzler India | UAE AI Engineer 9x Microsoft MVP on Azure 10x Microsoft Certified Trainer Azure Cloud Advocate 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

Alexander Chatzizacharias

Alexander Chatzizacharias

Alexander, a 35-year-old Software Engineer at JDriven, holds dual Dutch and Greek nationality. He earned his master’s degree in Game Studies from the University of Amsterdam, where he discovered his passion for gamification and software engineering. Alexander aims to bridge the gap between game development and software engineering, believing that both industries have much to learn from each other. He is dedicated to integrating technologies and methodologies from both fields. Additionally, he enjoys experimenting with new technologies and cutting-edge sdk's.

Alexander, a 35-year-old Software Engineer at JDriven, holds dual Dutch and Greek nationality. He earned his master’s degree in Game Studies from the University of Amsterdam, where he discovered his passion for gamification and software engineering. ... Show more

Steven Chinsky

Steven Chinsky

Past experience
- Over 250+ NAV/BC Implementations in Manufacturers, Supply Chain (WMS), Food and Beverage, Retail, Service, Oil and Gas, Chemical, Industrial Equip., Rental/Service, and Home Goods
- Over 16 years as an Accountant in a variety of positions (VP of Finance, Director of Finance, Audit Manager, Controller, and Director Operations)
- Extensive knowledge and implementation over 30 NAV/BC ISV APPs
Awards
- Microsoft Most Valuable Professional (MVP)
- NAVUG/BC All-Star
- 4-time NAVUG/BC Granite Award recipient
- DUG Guardian Award recipient
Professional
- IMA/CMA – Member 1988
- AICPA – Member 1985
- APICS – Member 2004
- DCI Summit – Programming Committee (2012 – Present, Chair (2016-2018), Board of Advisor (2013-2015 and 2021-Present)
- Dynamics User Group (DUG) – NAV/BC Forum Moderator, Dynamics Con Content Committee
- Directions NA – Content Committee (2018-Present)
Certifications
- MCP – MB-800
- Dynamics Credentialed Professional
- Microsoft Certified Professional

Past experience - Over 250+ NAV/BC Implementations in Manufacturers, Supply Chain (WMS), Food and Beverage, Retail, Service, Oil and Gas, Chemical, Industrial Equip., Rental/Service, and Home Goods - Over 16 years as an Accountant in a variety of p... 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

Bülent Altinsoy

Bülent Altinsoy

Bülent works at Avanade since over a decade and as Senior Expert in Power Platform and Copilot Studio in Germany.

His passion is to share his knowledge and learnings around Power Platform & Dynamics 365. Bülent is a Microsoft MVP since 2025 and an MCT since 2021.

Bülent works at Avanade since over a decade and as Senior Expert in Power Platform and Copilot Studio in Germany. His passion is to share his knowledge and learnings around Power Platform & Dynamics 365. Bülent is a Microsoft MVP since 2025 and a... Show more

Andreas Kollegger

Andreas Kollegger

Andreas is a technological humanist. Starting at NASA, Andreas designed systems from scratch to support science missions. Then in Zambia, he built medical informatics systems to apply technology for social good. Now with Neo4j, he is democratizing graph databases to validate and extend our intuitions about how the world works. Everything is connected.

Andreas is a technological humanist. Starting at NASA, Andreas designed systems from scratch to support science missions. Then in Zambia, he built medical informatics systems to apply technology for social good. Now with Neo4j, he is democratizing gr... Show more

Fawaz Ghali

Fawaz Ghali

Fawaz Ghali is an independent applied AI technologist with over 25 years of experience spanning AI research, higher education, and industry delivery. He works at the point where enthusiasm has faded, tools have been tried, and AI initiatives are expected to deliver real value.

Holding a PhD in Computer Science, Fawaz has led and contributed to applied AI, data engineering, and distributed systems across academia and industry. He has published 45+ peer-reviewed papers and delivered over 300 talks worldwide, focusing on what actually works once AI meets real data, real constraints, and real organisational pressure.

Fawaz speaks and teaches independently, without vendor affiliation or sales agendas. His sessions are direct, evidence-based, and deliberately free of marketing, product promotion, or speculative claims, offering audiences clarity, critical evaluation, and hard-earned insight grounded in practice rather than hype.

Fawaz Ghali is an independent applied AI technologist with over 25 years of experience spanning AI research, higher education, and industry delivery. He works at the point where enthusiasm has faded, tools have been tried, and AI initiatives are expe... Show more

Daniel Drack

Daniel Drack

Daniel started his IT career as an administrator for ETL and BI tools. He then worked some time in a data warehousing team before diving into all topics devops and cloud native. In his current role he is a DevOps and cloud-native consultant with FullStackS GmbH. Daniel holds a BSc in Industrial Engineering, a MA in Innovation Management and an MBA. He's a lifelong learner and teacher, lecturing at two Austrian universities of applied science.
Daniel lives in Graz with his girlfriend and his tomcat Manfred 🐈.

🌐 drackthor.me
📧 daniel@drackthor.me

Daniel started his IT career as an administrator for ETL and BI tools. He then worked some time in a data warehousing team before diving into all topics devops and cloud native. In his current role he is a DevOps and cloud-native consultant with Full... Show more

Constanze Roedig

Constanze Roedig

Constanze is an astrophysicist turned entrepreneur: she spent over 15 years designing and implementing resilient complex systems for finance and government. CS lecturer and key researcher. Created the K8s Stormcenter for Open Threat Intelligence. Her research is on improving security using modern and emerging technologies such as eBPF, WebAssembly and AI. Her vision is to create practical and achievable security implementations usable in defendable systems for a resilient society.

Constanze is an astrophysicist turned entrepreneur: she spent over 15 years designing and implementing resilient complex systems for finance and government. CS lecturer and key researcher. Created the K8s Stormcenter for Open Threat Intelligence. Her... Show more

Aurora Scharff

Aurora Scharff

Aurora Scharff is a DX Engineer at Vercel and the React Certification Lead at certificates.dev. She specializes in React and Next.js, focused on technical content, developer education, and community. She creates demo applications, writes deep-dive blog posts, and delivers workshops and talks at conferences worldwide.

Aurora Scharff is a DX Engineer at Vercel and the React Certification Lead at certificates.dev. She specializes in React and Next.js, focused on technical content, developer education, and community. She creates demo applications, writes deep-dive bl... Show more

Piotr Trębacz

Piotr Trębacz

Piotr is a DevOps leader you insert deep behind enemy lines - to transform troubled software and processes into modern standards. He's specialty is combining hard technical skills and soft leadership pragmatism with high agency.

Imagine him as lean blackops operative with Second Brain of almost 7000 hand-gardened notes bringing unconventional outside-in perspective. He's led $1M+ digital transformations, accelerated delivery for 150+ engineers, and slashed release cycles from weeks to hours across Air Defense, Banking, Industry 4.0, Logistics, Fuel, Mars Rovers and Gambling.

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

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

Piotr is a DevOps leader you insert deep behind enemy lines - to transform troubled software and processes into modern standards. He's specialty is combining hard technical skills and soft leadership pragmatism with high agency. Imagine him as lea... Show more

Nitish Kumar

Nitish Kumar

Nitish is a Software Engineer at Akuity working on the core Argo team. He is a maintainer of the CNCF-graduated project Argo CD and a former Release Team member of the Kubernetes project. Outside of work, Nitish enjoys playing chess and travelling.

Nitish is a Software Engineer at Akuity working on the core Argo team. He is a maintainer of the CNCF-graduated project Argo CD and a former Release Team member of the Kubernetes project. Outside of work, Nitish enjoys playing chess and travelling. 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

Christian Wenz

Christian Wenz

Christian Wenz is a consultant, software architect and entrepreneur specializing in web technologies and security. A prolific writer, he has authored or co-authored over 100 books for various publishers. Christian’s work spans both open-source and proprietary web technologies, a unique combination that has earned him recognition as a Microsoft MVP for Developer Technologies and the distinction of being the lead author of the Zend PHP certification. He is also credited in several open-source projects for his contributions. In addition to his writing and technical endeavors, Christian is a frequent speaker at developer conferences worldwide, where he shares his expertise in web technologies.

Christian Wenz is a consultant, software architect and entrepreneur specializing in web technologies and security. A prolific writer, he has authored or co-authored over 100 books for various publishers. Christian’s work spans both open-source and pr... Show more

André Kamman

André Kamman

André is a Data Engineer and architect mostly in Azure. He has done a lot of DBA work on 1000’s of SQL Servers where he discovered his love for Powershell, architecting data solutions, building and tuning ETL processes (with BIML), and even implementing PDW. Having to wrangle a lot of data he's using Python, SparkSQL in Azure Databricks, Data Factory, dbt and Power BI as well these days. André is a Data Platform MPV since 2009, Dutch Microsoft Data Platform Meetup lead, organiser of Data Saturday Holland and Data & BI track volunteer for Techorama Holland

André is a Data Engineer and architect mostly in Azure. He has done a lot of DBA work on 1000’s of SQL Servers where he discovered his love for Powershell, architecting data solutions, building and tuning ETL processes (with BIML), and even implement... 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

Yury Tsarev

Yury Tsarev

Yury is an experienced software engineer who strongly focuses on open-source, software quality and distributed systems. As the creator of k8gb (https://www.k8gb.io) and active contributor to the Crossplane ecosystem, he frequently speaks at conferences covering topics such as Control Planes, GSLB, and the experience of running reliable and testable infrastructure at a huge scale. He enjoys his role in Upbound, helping organizations worldwide to revolutionize their infrastructure with Crossplane.

Yury is an experienced software engineer who strongly focuses on open-source, software quality and distributed systems. As the creator of k8gb (https://www.k8gb.io) and active contributor to the Crossplane ecosystem, he frequently speaks at conferenc... Show more

Niels Berglund

Niels Berglund

Niels is a forward-thinking Software/AI Architect at Derivco, spearheading the development of innovative, AI-driven products that push the boundaries of iGaming technology. A pivotal figure in Derivco's AI initiatives, he played a key role in architecting and designing the company's first AI-driven promotion system, Arena+, setting new standards for performance and user engagement in the industry.

As a Microsoft AI MVP, Niels combines technical expertise with visionary leadership to explore the potential of AI in creating groundbreaking solutions. With a track record of designing and scaling high-performance iGaming systems, Niels is passionate about leveraging technology to redefine the gaming experience.

Niels is a sought-after presenter at technology conferences and has presented at, amongst others: Tech-ED, SQL PASS, DevWeek, SQL Bits, SQL Saturday, etc.

Niels is a forward-thinking Software/AI Architect at Derivco, spearheading the development of innovative, AI-driven products that push the boundaries of iGaming technology. A pivotal figure in Derivco's AI initiatives, he played a key role in archite... Show more

Dennis Hoffstaedte

Dennis Hoffstaedte

Dennis Hoffstädte ist Gründer und Geschäftsführer der DatenPioniere. Er versteht sich als Impulsgeber für analytische Themen und begleitet Unternehmen bei der Einführung von BI-Plattformen. Selbstbezeichnend als „The Plumber of Data Analytics“ ist er auch Gründer der exklusiven Community „How2SurvivePowerBI“.

Dennis Hoffstädte ist Gründer und Geschäftsführer der DatenPioniere. Er versteht sich als Impulsgeber für analytische Themen und begleitet Unternehmen bei der Einführung von BI-Plattformen. Selbstbezeichnend als „The Plumber of Data Analytics“ ist er... Show more

Javier Menendez Pallo

Javier Menendez Pallo

Microsoft AI MVP.
AI Partner at KYNDRYL.
Doctor in Artificial Intelligence, with more than 28 years of professional experience. He helps organizations to solve their problems with the use of artificial intelligence and the Internet of things. Passionate about technology, he has more than 193 Microsoft certifications and collaborates in multiple publications in the technology sector.

Microsoft AI MVP. AI Partner at KYNDRYL. Doctor in Artificial Intelligence, with more than 28 years of professional experience. He helps organizations to solve their problems with the use of artificial intelligence and the Internet of things. Pass... Show more

Oskari Heikkinen

Oskari Heikkinen

Oskari has over a decade of experience in using Azure for data analytics at scale. He has been designing and implementing numerous projects for some of the largest companies in the Nordics. As a Microsoft Certified Trainer (MCT), Oskari conducts classes for subject-matter experts and consultants and provides external customer training sessions. He is also an active speaker at community events. Oskari has been honored with the Microsoft Most Valuable Professional (MVP) award in the Data Platform category six times. Additionally, he is certified as an Azure Solutions Architect, Fabric Analytics Engineer, and Azure Data Engineer.

Oskari has over a decade of experience in using Azure for data analytics at scale. He has been designing and implementing numerous projects for some of the largest companies in the Nordics. As a Microsoft Certified Trainer (MCT), Oskari conducts clas... Show more

Elena Marquetti-Ali

Elena Marquetti-Ali

Elena is a highly-rated professional speaker with 20+ years of experience as a leadership coach, group facilitator and collegiate faculty member. Elena works with groups, individuals, and organizations to amplify their authenticity and empower them to become effective leaders. Elena is the President of and Lead Consultant with Marquetti Consulting.

Elena is a highly-rated professional speaker with 20+ years of experience as a leadership coach, group facilitator and collegiate faculty member. Elena works with groups, individuals, and organizations to amplify their authenticity and empower them t... Show more

Gene Gotimer

Gene Gotimer

Gene Gotimer is a DevSecOps Engineer who loves playing with new tools, focusing on agile processes, securing development practices, and automating everything. Gene feels strongly that repeatability, quality, and security are all strongly intertwined; each depends on the other two, making agile and DevSecOps crucial to software development.

Gene Gotimer is a DevSecOps Engineer who loves playing with new tools, focusing on agile processes, securing development practices, and automating everything. Gene feels strongly that repeatability, quality, and security are all strongly intertwined;... Show more

Patrick Guimonet

Patrick Guimonet

Patrick has 20+ years of experience as an Enterprise Solutions Architect. He has a successful track record of technical expertise for Office 365, SharePoint, SQL Server, and Oracle RDBMS. He is a former Microsoft employee in France. He worked 14 years to develop his own company Abalon, created in 2011. Abalon is dedicated to supporting customers on getting real business benefits with Microsoft collaborative platform.
After selling it, he created a new one called AURA specialized on Microsoft licensing optimization.

He has been speaker and organizer of 100+ Microsoft 365 and Power Platform events like SharePoint Saturdays Paris, Monaco, Dubai, Netherlands, Barcelona, Helsinki, ..., European SharePoint Conference, European Collaboration Summit, MS TechDays Paris, Modern Workplace Conference Paris and Power Platform French Summit...
He has spoken on the 5 continents, on more than 50 countries. More details here: http://bit.ly/eventsPGU2

He leads aMP Community. More details here: http://bit.ly/aMSPrez

Patrick has 20+ years of experience as an Enterprise Solutions Architect. He has a successful track record of technical expertise for Office 365, SharePoint, SQL Server, and Oracle RDBMS. He is a former Microsoft employee in France. He worked 14 year... 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.