Most Active Speakers 2025

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

  • 1125 speakers
  • Auto-generated
Rajaniesh Kaushikk

Rajaniesh Kaushikk

Meet Rajaniesh Kaushikk – a Microsoft MVP and TOGAF Certified Enterprise Architect with over 22 years of experience in delivering complex software architectures for Fortune 500 companies. Rajaniesh specializes in data integration, governance, and analysis, with a proven track record in defining technical architectures, designing analytic solutions, and developing agile frameworks. His expertise spans Hybrid Cloud, Azure Cloud, Power BI, Kubernetes, Databricks Lakehouse, Snowflake, and more, making him a trusted partner in solving intricate business challenges and driving market growth.

As a hands-on technical architect, Microsoft Certified Solution Architect, and Databricks Champion, Rajaniesh excels in translating complex concepts into actionable strategies, whether through pre-sales technical presentations or public speaking at Microsoft events. A Microsoft Certified Trainer, he is committed to sharing his knowledge and staying at the forefront of technological advancements, ensuring scalable and innovative solutions for modern software architecture needs.

Meet Rajaniesh Kaushikk – a Microsoft MVP and TOGAF Certified Enterprise Architect with over 22 years of experience in delivering complex software architectures for Fortune 500 companies. Rajaniesh specializes in data integration, governance, and ana... Show more

John Kjell

John Kjell

John is a Principal Consultant at ControlPlane, where he helps some of the world’s most security-conscious organizations build and assure mission-critical platforms. He is a maintainer of the Witness and Archivista sub-projects under in-toto and serves as a co-chair of the CNCF’s TAG Security. John is also actively involved in several initiatives within the OpenSSF. Prior to joining ControlPlane, he was the Director of Open Source at TestifySec and held engineering leadership roles at VMware.

John is a Principal Consultant at ControlPlane, where he helps some of the world’s most security-conscious organizations build and assure mission-critical platforms. He is a maintainer of the Witness and Archivista sub-projects under in-toto and serv... Show more

Mahmoud A. Atallah

Mahmoud A. Atallah

Azure Solutions Lead at Bespin Global MEA, with over 14 years of experience in Microsoft technologies. I help businesses build secure, scalable, and AI-powered solutions on Azure, with a strong focus on automation, security, and DevOps.

Specialized in Azure AI and AVD, and passionate about digital transformation. I’m also the organizer of #ExpertsLiveUAE, #ArWVDUG, and #CloudMechanics.

Spoke at global events like #GITEX, #MicrosoftAITour, #TechConnectLive, #GlobalAI, #AiEverythingSummit, #WorkplaceNinjas, and #WebSummit. I enjoy sharing practical knowledge through sessions, hackathons, and workshops to help others make the most of Microsoft Cloud and AI.
More at: https://3tallah.com

Azure Solutions Lead at Bespin Global MEA, with over 14 years of experience in Microsoft technologies. I help businesses build secure, scalable, and AI-powered solutions on Azure, with a strong focus on automation, security, and DevOps. Specialize... Show more

Tony Wilhelm

Tony Wilhelm

Tony Wilhelm has amassed over two decades of experience working with databases and computers. His expertise in SQL server dates back to 1999, showcasing his extensive knowledge in the field. Throughout his career, Tony has held various roles, including DBA, developer, and manager, in both large and small companies spanning multiple industries.

Currently, Tony serves as a senior consultant and technical lead for the Data Management as a Service division at Moser Consulting. In this role, he brings his wealth of experience to the table, providing valuable insights and guidance to drive the implementation of effective solutions.

Tony Wilhelm has amassed over two decades of experience working with databases and computers. His expertise in SQL server dates back to 1999, showcasing his extensive knowledge in the field. Throughout his career, Tony has held various roles, includi... Show more

Kevin Pereira

Kevin Pereira

I'm a results-driven data professional with nearly two decades of experience dedicated to transforming data into strategic assets. My journey began in the intricate world of data and systems integration, mastering ETL/ELT processes to build robust foundations. For the past 15 years, my expertise has deepened within the Microsoft data stack, spanning traditional BI tools (SQL, SSIS, SSRS, SSAS), the extensive Azure Data Platform services, and Power BI. Crucially, the last two years have seen me at the forefront of Microsoft Fabric, pioneering its capabilities.

Beyond core data integration, I bring 8 years of hands-on experience in creating and maintaining robust CI/CD pipelines within Azure DevOps, ensuring streamlined, automated, and reliable deployments for a diverse range of data projects. This commitment to operational excellence extends to my 3 years of experience in managing and nurturing a team of Data Engineers, fostering growth and driving collaborative success.

My dedication to the data community is a cornerstone of my professional identity. As a leader with the DFW Power BI User Group, I actively contribute to growing local talent and knowledge sharing. This year, I've had the incredible opportunity to share my deep knowledge of Microsoft Fabric as a speaker at various SQL Saturday events, user groups, and notably, at both the Microsoft Fabric Community Conference in Las Vegas and in Europe.

I'm a results-driven data professional with nearly two decades of experience dedicated to transforming data into strategic assets. My journey began in the intricate world of data and systems integration, mastering ETL/ELT processes to build robust fo... Show more

Luca Di Vita

Luca Di Vita

I hold a degree in Computer Engineering from the University of L'Aquila. My passion lies in research, particularly in Machine Learning and Evolutionary Computation.
I work as a Machine Learning Engineer in the IT sector, focusing on security and defense.
Driven by curiosity and a love for continuous learning, I have ventured into the world of Dev Talks, where I enjoy sharing knowledge and connecting with the tech community.

My goal is to inspire and engage others with the same enthusiasm that fuels my work, fostering discussions that push the boundaries of technology and innovation.

See my personal blog here: https://www.lucadivita.it/

I hold a degree in Computer Engineering from the University of L'Aquila. My passion lies in research, particularly in Machine Learning and Evolutionary Computation. I work as a Machine Learning Engineer in the IT sector, focusing on security and def... Show more

Agnius Bartninkas

Agnius Bartninkas

8+ years of successfully leading process improvement and automation agencies, specializing in Power Platform consultancy, solution architecture and development, using Copilot Studio, Power Automate, Power Apps and other products.

Over 200 projects delivered to more than 100 clients worldwide either personally or via a directly managed team of developers. Over 10 million EUR in accumulated savings reported by clients due to these projects.

Personally trained numerous automation developers to work with the Power Platform and related software.

Microsoft Business Applications MVP.

8+ years of successfully leading process improvement and automation agencies, specializing in Power Platform consultancy, solution architecture and development, using Copilot Studio, Power Automate, Power Apps and other products. Over 200 projects... Show more

Daniel Laskewitz

Daniel Laskewitz

Daniel Laskewitz is a Principal Cloud Advocate at Microsoft, specializing in the Power Platform. He helps (advanced) makers, IT professionals, developers, and architects accelerate solution delivery through both low-code and pro-code tools.

▶️ Career progression: Former Microsoft MVP (6 years) and Fast-Track Recognized Solution Architect before joining Microsoft.
▶️ Community voice: Regular speaker at leading tech conferences and co-author of Power Platform Weekly.
▶️ Platform breadth: Deep knowledge across Copilot Studio, Power Apps, Power Automate, ALM, and governance.
▶️ Content creator: Publishes practical guidance on Copilot Studio, solution design, and ALM.

Daniel combines platform expertise with real-world application to support scalable, secure, and maintainable solutions.

Daniel Laskewitz is a Principal Cloud Advocate at Microsoft, specializing in the Power Platform. He helps (advanced) makers, IT professionals, developers, and architects accelerate solution delivery through both low-code and pro-code tools. ▶️ Ca... Show more

Richard Harbridge

Richard Harbridge

Richard Harbridge is a Principal Industry Advisor on Microsoft 365 and ShareGate as well as a long-standing Microsoft MVP. Renowned for simplifying the complex, Richard equips IT, executives, and business leaders with three essentials: clarity about Microsoft 365’s evolving capabilities, confidence in responsibly implementing and governing new technologies, and the connections that amplify success across partners, customer communities and Microsoft itself.

Over the past decades he has:
• Advised 200+ enterprises on Microsoft 365 strategy, AI governance and employee experience.
• Delivered 450 + keynotes, workshops and conference sessions across five continents.
• Empowered millions of employees with simpler, more secure Microsoft 365 experiences, while helping partners unlock $300+ million in new revenue.
• Leads CIO think tanks and employee-experience forums while serving on research and community leadership councils shaping the future of work.

Whether architecting AI rollouts, moderating executive roundtables, or writing practical frameworks, Richard’s focus is unwavering: turn technology potential into lasting business impact.

Richard Harbridge is a Principal Industry Advisor on Microsoft 365 and ShareGate as well as a long-standing Microsoft MVP. Renowned for simplifying the complex, Richard equips IT, executives, and business leaders with three essentials: clarity about ... Show more

Paul Swider

Paul Swider

30 years building tools that add hours back to a clinician's day
CEO at RealActivity | AI Pioneer | BOSHUG Founder | Microsoft Keynoter

I've spent my career at the intersection of healthcare and technology, not talking about AI transformation, but actually building it. In 2001, I designed a symbolic AI triage engine that eliminated pre-op anesthesia visits and accelerated same-day surgery pathways.

In 2023, my team shipped RealActivity Physician Activity Copilot, the world's first AI harness focused on hospital administration. And 2024, we shipped Wheelhouse, a model fine-tuned on PeopleSoft healthcare operations data and executive prompt workflows.

What happened in between? I trained 3,000+ engineers across GE, IDX, and Microsoft in enterprise software patterns. I migrated 50+ HIPAA workloads to Azure. I built the CMS compliance and activity reporting platforms that health systems still rely on. I earned Microsoft MVP recognition and was named Azure Most Influential, not for evangelism, but for implementation.

Today I'm CEO & Chief AI Officer at RealActivity, a boutique Microsoft partner delivering mission-critical AI for academic medical centers and health systems across the Northeast. Our focus? Tracking system wide clinical time (cFTE), CMS complaint AI, and improving operational efficiency, the problems that keep CMOs and CMIOs up at night. I'm also the founder of OCS Labs, an AI lab building industry-specific AI for government, and sectors where getting it wrong isn't an option.

I founded BOSHUG, the Boston Healthcare Cloud & AI Community, which has grown into a global network serving 40k. I'm a Cloud Wars healthcare AI analyst, a top 3% rated global speaker (Microsoft Ignite, Cloud Wars, and beyond).

Global citizen based in Greater Boston. When I'm not building healthcare AI, you'll find me at a Sicilian bakery arguing about lemon cake, sailing, snowboarding, diving, or planning the next adventure. 114 countries, and counting.

30 years building tools that add hours back to a clinician's day CEO at RealActivity | AI Pioneer | BOSHUG Founder | Microsoft Keynoter I've spent my career at the intersection of healthcare and technology, not talking about AI transformation, bu... Show more

Martin Rövekamp

Martin Rövekamp

Martin Rövekamp embarked on his career as a Communication Consultant, specializing in solutions such as Learning Terminals and Intranets. In 2012, he transitioned to SharePoint Consulting, focusing on Collaboration and Intranets.

Since April 2024, he has been recognized as an MVP for SharePoint and since July 2025 additionally for M365 Copilot. His current area of expertise lies in the Modern Workplace, encompassing internal communication, collaboration, and enhancing the Employee Experience. Martin actively guides his clients through the process of migrating to or implementing new intranets, as well as optimizing collaboration using Microsoft 365. He showcases, how to integrate AI in the daily work of editors.

Martin’s community involvement includes: Co-Founder of Hamburg SharePint, Organizer of CollabDays Hamburg & Oslo, Member of Global AI Community Hamburg & Oslo, Agent Con in Oslo and Agent Camp in Hamburg, Co-Host of the “Martin’s Modern Work” Webtalkshow. He frequently shares insights on topics such as Modern Work, AI, and Digital Transformation. Beyond his professional endeavors, Martin also graces the stage as a trumpet player.

Martin Rövekamp embarked on his career as a Communication Consultant, specializing in solutions such as Learning Terminals and Intranets. In 2012, he transitioned to SharePoint Consulting, focusing on Collaboration and Intranets. Since April 2024... Show more

Alison Cossette

Alison Cossette

Alison Cossette is founder and CEO of ClariTrace, where she's building graph-based intelligence for AI systems. Her work spans AI governance, physical AI, and retrieval research—she recently won "Most Impressive Project" at Physical AI Hack 2026 for a VLA-powered robot that reads books to children. Alison serves on the US NIST Generative AI Public Working Group and has studied AI and Data Science at Northwestern University at the Master's level. She speaks globally on building AI systems that are capable, controllable, and worth trusting.

Alison Cossette is founder and CEO of ClariTrace, where she's building graph-based intelligence for AI systems. Her work spans AI governance, physical AI, and retrieval research—she recently won "Most Impressive Project" at Physical AI Hack 2026 for ... Show more

Bruno Capuano

Bruno Capuano

On 2021 I joined Microsoft, now I’m working as Principal Cloud Advocate 🥑, which is a role that focuses on helping developers and organizations to understand, adopt and successfully use Microsoft cloud technologies. My main goal is to empower developers with the knowledge and tools they need to build and deploy applications on Azure, and other Microsoft cloud platforms.

🌱 Previous to Microsoft, I was leading the Innovation Team for Avanade Canada, which means I spent much part of my time trying to figure our the best way to connect real Business with cool technologies, and engage my colleagues to perform smart and fun activities like participate in hackathons, coordinate hackathons and Innovation Contests, support tech meetings, and more!

🤖 Bruno also like to hack new technologies, play the guitar and run. Run a lot, which suddenly started after becoming the dad of the 2 best sons ever.
You can contact him via twitter (@elbruno) or on his blog: http://www.elbruno.com

On 2021 I joined Microsoft, now I’m working as Principal Cloud Advocate 🥑, which is a role that focuses on helping developers and organizations to understand, adopt and successfully use Microsoft cloud technologies. My main goal is to empower develo... Show more

Rebai Hamida

Rebai Hamida

As Principal Solutions Architect, leveraging over 16 years of experience, I contributed to driving digital transformation and advancing cloud value management practices within the public sector. Proficient in solution architecture, team leadership, and cloud modernization strategies, collaborated with diverse teams to align technology solutions with organizational goals. Core competencies include hybrid architecture design, cloud-native platform transitions, and embedding FinOps principles to optimize cloud investments.
Actively engaged in the FinOps community as a foundation member, facilitating workshops and sharing knowledge to empower professionals in cloud financial operations. Dedicated to fostering innovation and enabling scalable, efficient solutions for complex enterprise environments. Continuously focused on delivering measurable outcomes, enhancing operational efficiency, and reducing cloud costs through automation and AI-driven strategies.

As Principal Solutions Architect, leveraging over 16 years of experience, I contributed to driving digital transformation and advancing cloud value management practices within the public sector. Proficient in solution architecture, team leadership, a... Show more

Morten Knudsen

Morten Knudsen

Morten is a Triple Microsoft MVP (Security, Azure, and Security Copilot), a Microsoft Certified Trainer, and holds over 17 active Microsoft certifications.

As a Cloud and Security Architect, he focuses on Azure infrastructure, Microsoft 365, automation, security, AI, and hybrid cloud.

He actively shares insights and tools with the community through his blog at aka.ms/morten / mortenknudsen.net, where his community tools have reached over 2,3 million downloads.

Morten is also a strong advocate for the tech community — speaking at events, mentoring professionals, and co-founding Experts Live Denmark.

Outside of work, he enjoys traveling with his family and is certified as both a PADI Dive Master and PADI Master Scuba Diver.

Morten is a Triple Microsoft MVP (Security, Azure, and Security Copilot), a Microsoft Certified Trainer, and holds over 17 active Microsoft certifications. As a Cloud and Security Architect, he focuses on Azure infrastructure, Microsoft 365, auto... Show more

Javan Rasokat

Javan Rasokat

Javan is a Senior Application Security Specialist at Sage, where he supports product teams in strengthening security across the software development lifecycle. He also lectures on Secure Coding at DHBW University in Germany. His journey into ethical hacking began at a young age, when he built bots to automate online games and uncovered security flaws, which he responsibly reported to game operators. Turning this passion into a career, Javan started out as a full-stack web and mobile engineer before moving into security consulting. He holds a Master’s degree in IT Security Management and multiple certifications, including GXPN, AIGP, CISSP, CCSP, and CSSLP. Javan has presented his research and delivered hands-on workshops at conferences such as DEFCON, OWASP Global AppSec and Blackhat.

Javan is a Senior Application Security Specialist at Sage, where he supports product teams in strengthening security across the software development lifecycle. He also lectures on Secure Coding at DHBW University in Germany. His journey into ethical ... Show more

Burton Smith

Burton Smith

I am a senior web platform engineer at Zocdoc, working with design systems.

I am also the creator of various open-source projects like the Web Components Toolkit (wc-toolkit.com).

In my free time, I love spending time with my wife and three daughters, practicing martial arts, jamming on my ukulele, and learning new things (usually about software engineering).

I am a senior web platform engineer at Zocdoc, working with design systems. I am also the creator of various open-source projects like the Web Components Toolkit (wc-toolkit.com). In my free time, I love spending time with my wife and three dau... Show more

Carlos Javier Sosa Marquina

Carlos Javier Sosa Marquina

Carlos Sosa (@cjsosam) is a technology enthusiast with more than 20 years of experience in development, architecture and administration on SharePoint technologies, and more than 7 in development, architecture and administration on Power Power Platform. He works at knowmad mood (previosly atSistemas) in Barcelona and is an active contributor in communities like Power Platform Barcelona User Group and SUG.CAT

Carlos Sosa (@cjsosam) is a technology enthusiast with more than 20 years of experience in development, architecture and administration on SharePoint technologies, and more than 7 in development, architecture and administration on Power Power Platfor... Show more

Codrina Merigo

Codrina Merigo

Microsoft MVP Alumni and SAFe PO/PM certified professional with a strong passion for building impactful mobile applications and exploring the evolving landscape of AI. With over seven years of experience in the Xamarin ecosystem and now deeply engaged in .NET MAUI, has consistently focused on delivering high-quality, cross-platform solutions that balance performance, usability, and scalability.
Author of AI-Enabled Apps with .NET MAUI: How to Build Cross-Platform .NET MAUI Apps with the Latest AI Capabilities, bringing together hands-on development experience and a forward-looking perspective on integrating AI into modern applications.
Particularly passionate about UX and UI design, with a keen eye for creating intuitive, user-centered experiences across platforms. In recent years, has specialized in UI testing, best practices, continuous integration, and performance optimization within .NET MAUI projects, helping teams build more robust and maintainable applications.
Naturally curious and continuously learning, with a growing interest in AI and machine learning, especially in how these technologies can enhance real-world products. More recently, has expanded focus into product management and digital product strategy, combining technical expertise with a user- and business-oriented mindset to drive meaningful product outcomes.

Microsoft MVP Alumni and SAFe PO/PM certified professional with a strong passion for building impactful mobile applications and exploring the evolving landscape of AI. With over seven years of experience in the Xamarin ecosystem and now deeply engage... 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

Lianne Potter

Lianne Potter

When you follow the cables, behind every piece of tech is a person, consumer and creator, and we should never lose sight of this.

Lianne is an award-winning digital anthropologist and technologist specialising in software engineering, cybersecurity and AI. She is Co-Founder and Chief AI Security & Ethics Officer at NorthStar Intelligence, where she focuses on building responsible, resilient AI systems that are secure by design and grounded in human impact. Lianne’s speaking specialism is delivering talks that not only challenge audiences, but change them.

She provides strategic consultancy to help organisations build and transform security operations into resilient, forward-thinking teams. As former Head of SecOps for Europe’s largest greenfield technology transformation, she established a cutting-edge security function that set new industry benchmarks through innovation and collaboration.
An international keynote speaker, Lianne bridges cybersecurity, technology, and anthropology, drawing on her experience as both a security-focused software developer and practicing anthropologist. Currently pursuing an MSc in AI and Data Science, her research focuses on AI safety, alignment, and the societal implications of emerging technologies.

Recognised with accolades including Security Specialist of the Year and Cybersecurity Personality of the Year, she also champions diversity and inclusion in tech through community initiatives, publications, and her award-winning podcast Compromising Positions. Exploring how culture shapes cybersecurity through the lense of anthropology, psychology, philosophy and behavioural science. The show has become a platform for challenging assumptions, amplifying diverse voices, and reframing security as a deeply human issue rather than a purely technical one.

When she’s not working in AI and cybersecurity, she’s likely busy interrogating the tech in sci-fi classics like The Terminator on the podcast Tech Film Noir.

Publications include:

* The Times
* Raconteur
* Computing.com
* The Yorkshire Post
* Security Magazine
* IT Pro
* EmTech Anthropology Careers at the Frontier (Book)

Recent awards and honours include:

* Podcast Newcomer - 2024 European Cybersecurity Blogger Awards
* Cybersecurity Personality of the Year 2023 - The Real Cyber Awards
* Security Woman of the Year - Computing Security Excellence Awards 2023 (Highly Commended)
* 40 Under 40 in Cybersecurity - Cybersecurity Magazine
* Security Leader of The Year 2021 - Women in Tech Excellence
* Woman of the Year 2021 - Women in Tech Excellence
* Security Specialist of the Year 2021 - Computing.com

When you follow the cables, behind every piece of tech is a person, consumer and creator, and we should never lose sight of this. Lianne is an award-winning digital anthropologist and technologist specialising in software engineering, cybersecurit... Show more

Bas Land

Bas Land

Bas founded Kimura and is an experienced Data Solution Architect with over 12 years as a consultant in various technologies, currently focusing on Microsoft Fabric.

He speaks, creates YouTube videos, and blogs about these experiences to share his knowledge with the community.

He holds a Microsoft Dataplatform MVP award and is a Microsoft Certified Trainer.

In his spare time he likes to practice sports (Brazilian jiu-jitsu, running, weight lifting) and also to travel with his wife, son, and their dachshund Chester.

Bas founded Kimura and is an experienced Data Solution Architect with over 12 years as a consultant in various technologies, currently focusing on Microsoft Fabric. He speaks, creates YouTube videos, and blogs about these experiences to share his... Show more

Andreas Wänqvist

Andreas Wänqvist

Andreas has been working in different positions within enterprise during the last two decades. A few years ago his focus was on all things mobile, then it shifted towards building web systems. After that, the focus was on cloud solutions and planet-scale architecture. Nowadays it's producing customer value using AI.

Andreas is the CTO at Axonis. In his spare time he spends time with his family, lifts things in the gym, playing around with AI tooling, and is involved in OSS as an Aurelia Core Team member.

Andreas has been working in different positions within enterprise during the last two decades. A few years ago his focus was on all things mobile, then it shifted towards building web systems. After that, the focus was on cloud solutions and planet-s... Show more

Kim Berg

Kim Berg

I started my career in a service desk role, which quickly sparked my interest in how technology is built, operated, and scaled. From there, I moved into data center hosting where I gained a solid understanding of infrastructure, reliability, and what it takes to keep critical environments running. I don’t have any formal education in IT, but I’ve always been a lifelong learner who grows through curiosity, hands‑on experience, and a drive to constantly improve.

Almost a decade ago, I discovered my passion for the cloud and specialized in Microsoft Azure. Since then, I’ve focused on modern Ops, platform engineering, and enabling teams by taking ideas from early concepts into secure, scalable, production‑ready solutions. Over the years, I’ve expanded my expertise across data, AI, and IoT and IIoT, and I most often work with clients in the role of Solution Architect, helping them design and build practical, outcome‑focused architectures tailored to real enterprise needs.

I’ve worked across a wide range of domains including defense, public sector, manufacturing, and energy, which has shaped how I approach architecture, security, and complex enterprise environments. I also contribute to the open‑source initiative Enterprise Scale AI Factory and enjoy collaborating with others to advance how we build and deliver modern solutions.

🗣 Sharing knowledge is a big part of who I am. I’m passionate about public speaking and mentoring, and I enjoy helping others grow by making technology more accessible and actionable.

Today, I work with enterprise‑scale AI, data, and IIoT solutions with large companies in Sweden, turning ideas into real, measurable impact.

I started my career in a service desk role, which quickly sparked my interest in how technology is built, operated, and scaled. From there, I moved into data center hosting where I gained a solid understanding of infrastructure, reliability, and what... Show more

Tim Wolf

Tim Wolf

Since the beginning of my IT profession, my focus has been on identity and automation. Currently i work for semperis with a strong focus on protecting your Identity Provider, both on premise and Cloud.
In my previous role as a PFE at Microsoft, my daily job included making customers happy with their current Identity Landscape and evolving the future with Entra ID and Zero Trust Concepts.
Part of the Germany Identity SME Team, i was involved in all projects in EMEA to drive topics like Identity Protection, Conditional Access or Passkeys and ZTNA.

Since the beginning of my IT profession, my focus has been on identity and automation. Currently i work for semperis with a strong focus on protecting your Identity Provider, both on premise and Cloud. In my previous role as a PFE at Microsoft, my... Show more

Chris Klug

Chris Klug

Chris Klug has been building software professionally since sometime around 2000, back when .NET was new, CSS was a suggestion, and Roy Fielding’s REST paper had just been published. Since then he has written code for everything from model agencies to online sports betting to professional sail racing, because staying in one industry sounded far too boring.

He has been a Microsoft MVP for something like 15 years (depending on when he last updated this abstract), which either means he knows a thing or two or that he just talks a lot. Possibly both, but we all know the latter is a given. These days he works at Active Solution in Stockholm, helping clients solve problems and build better systems.

When he is not writing code, Chris is usually geeking out on some form of extreme sport like skydiving, kitesurfing, snowboarding, mountain biking, or wing foiling. He loves learning new things and spends way too much time thinking about weird stuff most people never even notice.

Chris Klug has been building software professionally since sometime around 2000, back when .NET was new, CSS was a suggestion, and Roy Fielding’s REST paper had just been published. Since then he has written code for everything from model agencies to... Show more

Vincent Caldeira

Vincent Caldeira

Vincent Caldeira, Red Hat APAC CTO and Industry Visiting Scholar at Columbia University, drives tech strategy and emerging engineering. A Top 10 APAC CTO (2023) with 20+ years in finance IT, he is an authority on open source, cloud-native technologies and AI. Vincent holds leadership roles across the Linux Foundation (FINOS, LF AI & Data) and GSF, championing AI safety, sustainability, and digital sovereignty.

Vincent Caldeira, Red Hat APAC CTO and Industry Visiting Scholar at Columbia University, drives tech strategy and emerging engineering. A Top 10 APAC CTO (2023) with 20+ years in finance IT, he is an authority on open source, cloud-native technologie... Show more

Rajith Attapattu

Rajith Attapattu

Rajith Attapattu is a community maintainer of OpenCost and an advocate for OpenTelemetry and open standards. A frequent speaker at CNCF meetups and Kubernetes Community Days, he has also spoken at KubeCon. His current focus is intent-based observability, AIOps, and building intelligent, cost-efficient telemetry pipelines. He previously spent over a decade at Red Hat working on distributed systems.

Rajith Attapattu is a community maintainer of OpenCost and an advocate for OpenTelemetry and open standards. A frequent speaker at CNCF meetups and Kubernetes Community Days, he has also spoken at KubeCon. His current focus is intent-based observabil... Show more

Marc Lelijveld

Marc Lelijveld

Data Platform MVP, Microsoft Fabric advocate, public speaker, and passionate about everything that transforms data into action.

Currently working at Macaw as Architect & Technical Advocate – Microsoft Fabric, where I help organizations design modern Data & AI solutions on Microsoft technologies, with a strong focus on Microsoft Fabric. Over the years, my role has evolved from technical evangelism into a stronger advisory and architecture-focused position. Today, I combine strategic advisory, pre-sales, and solution architecture to help customers make realistic technology decisions and build scalable, future-proof platforms.

What I enjoy most? Sharing knowledge, experiences, best practices, and enthusiasm around the Microsoft data & AI space. I actively contribute to the community through conferences, user groups, customer presentations, technical sessions, end-user training, and community initiatives focused on Microsoft Fabric, Power BI, and AI.

Besides public speaking and community work, I also share insights and experiences on my personal blog: data-marc.com

Data Platform MVP, Microsoft Fabric advocate, public speaker, and passionate about everything that transforms data into action. Currently working at Macaw as Architect & Technical Advocate – Microsoft Fabric, where I help organizations design mode... Show more

Sander ten Brinke

Sander ten Brinke

Sander ten Brinke is a Microsoft MVP (DevTech) and Senior Software Engineer at Arcady, a Dutch IT consultancy firm based in Zwolle. He loves working with .NET, Azure, DevOps and a whole lot more. He always stays up to date with all new technology and loves sharing his knowledge with everyone by speaking, blogging, podcasting and more!

Sander is an accomplished speaker, he has spoken at 40+ events, including meetups and big conferences like WeAreDevelopers World Congress 2024 and 2025 (15k attendees), NDC Oslo 2025,
Swetugg 2026, NDC Copenhagen 2026, FutureTech and more! He was in the top 3% of the most active speakers on the Sessionize Platform in 2024 and 2025!

Sander ten Brinke is a Microsoft MVP (DevTech) and Senior Software Engineer at Arcady, a Dutch IT consultancy firm based in Zwolle. He loves working with .NET, Azure, DevOps and a whole lot more. He always stays up to date with all new technology and... 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.