Most Active Speakers 2025

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

  • 1125 speakers
  • Auto-generated
Chris DeMars

Chris DeMars

Chris DeMars is a Senior Developer Advocate with over 20 years of technical experience. He speaks all over the world on web accessibility, feature flags, A/B testing, and CSS. For his community contributions, he holds awards as a Progress Champion and former Microsoft MVP, Google Developer Expert, Cloudinary Media Developer Expert, and Auth0 Ambassador. When he is not working on making the web great and accessible you can find him fishing, on the paintball field, rating Detroit Style pizza, and looking for UFO's.

Chris DeMars is a Senior Developer Advocate with over 20 years of technical experience. He speaks all over the world on web accessibility, feature flags, A/B testing, and CSS. For his community contributions, he holds awards as a Progress Champion an... Show more

Dennis Doomen

Dennis Doomen

Dennis is a Microsoft MVP and Principal Consultant at Dutch Microsoft consultancy firm Aviva Solutions. With 29 years of experience under his belt as a software architect and/or lead developer, he specializes in designing full-stack enterprise solutions based on .NET as well as providing coaching on all aspects of designing, building, documenting, deploying and maintaining software systems in an agile world. He is the author of several open-source projects, including Fluent Assertions, Pathy, Reflectify, PackageGuard, and several .NET Solution Templates, and has been maintaining coding guidelines for C# since 2001. You can find him on Twitter, Mastodon and BlueSky.

Dennis is a Microsoft MVP and Principal Consultant at Dutch Microsoft consultancy firm Aviva Solutions. With 29 years of experience under his belt as a software architect and/or lead developer, he specializes in designing full-stack enterprise soluti... Show more

Galen Keene

Galen Keene

Galen Keene is a highly accomplished architect, technical project manager, trainer, and engineer with 20+ years of experience transforming businesses through modern collaboration and AI. Since 2007, he has specialized in Microsoft 365, SharePoint, Microsoft Teams, the Power Platform, and generative AI across collaborative applications—including Microsoft Copilot, Copilot Studio, ChatGPT, and others—designing secure, governed solutions that deliver measurable outcomes.

A Microsoft MVP (Microsoft 365/Teams), Galen is an international speaker, president of the San Diego Microsoft 365 Productivity Group, and president of the San Diego chapter of IAMCP. He builds communities that accelerate knowledge-sharing and adoption, connecting practitioners, leaders, and partners.

Galen delivers specialized training and enablement on Copilot and broader GenAI: strategy and readiness (governance, data access, information protection), solution design (prompts, plugins/connectors, agents), and adoption at scale (champions, train-the-trainer, metrics). He helps organizations integrate Copilot and GenAI into daily workflows to boost efficiency, spark innovation, and upskill teams and leaders.

He architects and leads digital, cultural, and process transformations—bringing expertise in business strategy, solution architecture, and technical program management. His global work spans highly regulated environments, including designing information architectures for sensitive defense data under strict international controls.

As an Architect, Trainer, and Business Transformation Leader, Galen unifies people, communications, and data with pragmatic methods aligned to strategic goals—meeting organizations where they are and guiding them to where they need to be in an AI-accelerated world.

Galen Keene is a highly accomplished architect, technical project manager, trainer, and engineer with 20+ years of experience transforming businesses through modern collaboration and AI. Since 2007, he has specialized in Microsoft 365, SharePoint, Mi... 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

Lenin Alevski

Lenin Alevski

Lenin Alevski is a Full Stack Engineer and generalist with a lot of passion for Information Security. Currently working as a Security Engineer at Google. Lenin specializes in building and maintaining Distributed Systems, Application Security and Cloud Security in general. Lenin loves to play CTFs, contributing to open-source and writing about security and privacy on his personal blog https://www.alevsk.com.

Lenin Alevski is a Full Stack Engineer and generalist with a lot of passion for Information Security. Currently working as a Security Engineer at Google. Lenin specializes in building and maintaining Distributed Systems, Application Security and Clou... Show more

Lorenzo De Francesco

Lorenzo De Francesco

I am the CTO of Azimut Marketplace with over 10 years of experience in IT development. In the last year alone, I have successfully reduced IT costs by 80%, enhancing the operational efficiency of the platform. My primary commitment is to create IT solutions that not only drive profits but are also robust, durable, and flexible enough to meet the ever-evolving needs of our modern society. I am driven by a passion for innovation and technology, and I consistently strive to promote excellence in the management and development of technological systems.

I am the CTO of Azimut Marketplace with over 10 years of experience in IT development. In the last year alone, I have successfully reduced IT costs by 80%, enhancing the operational efficiency of the platform. My primary commitment is to create IT so... Show more

Vitalija Bartusevičiūtė

Vitalija Bartusevičiūtė

Vitalija thrives on turning complex data into actionable insights. For her PhD she spent years in a lab collecting data on fish, and gained a deep understanding on science-grade quantitative analytics. Today she work as a business analytics consultant using Microsoft technology, primarily Azure Databricks. She loves to talk about data and exchange best practices. When not at work you can her working on her next ceramics project.

Vitalija thrives on turning complex data into actionable insights. For her PhD she spent years in a lab collecting data on fish, and gained a deep understanding on science-grade quantitative analytics. Today she work as a business analytics consultan... Show more

Álvaro Sánchez-Mariscal

Álvaro Sánchez-Mariscal

Álvaro is a passionate developer and agile enthusiast with over 23 years of experience. He is now a Principal Member of Technical Staff at Oracle Labs, where he is a Micronaut committer, helping to maintain and evolve the open-source framework.

Before that, he was a Staff Engineer at VMWare, where he led the creation of new products to build, package, verify and publish software solutions with confidence in the VMware Marketplace. Previously, he spent some years working in different industries like gambling games (Odobo) and fintech (4Finance). Prior to that, he created his own company, Salenda, in 2005, a software factory and Atlassian Solution Partner headquartered in Madrid, Spain. Adaptavist acquired Salenda in 2019. Previously, he worked at companies like IBM BCS, Sun Microsystems or BEA Systems, where he was recognised as BEA Technical Director, an MVP awards program. He was also one of the initial founders and member of the Board of Directors of javaHispano in 2002, the world's largest Spanish-speaking Java User Group.

Álvaro has spoken in 20 different countries at conferences like Devoxx BE/FR/MA/PL, several Voxxed Days, GeeCON, JavaLand, JavaZone, jPrime, Codemotion and Commit Conf, among others. In his spare time, as well as coding and experimenting with new technologies, he likes to spend time with his wife and children, support CD Leganés football team, and play padel.

Álvaro is a passionate developer and agile enthusiast with over 23 years of experience. He is now a Principal Member of Technical Staff at Oracle Labs, where he is a Micronaut committer, helping to maintain and evolve the open-source framework. Be... Show more

Muhammad Ahsan Ayaz

Muhammad Ahsan Ayaz

Muhammad Ahsan is a Google Developers Expert (GDE) in AI & Angular, an author of 3 world-wide published books, an Educator, and a Software Architect.
https://bio.link/codewithahsan

Muhammad Ahsan is a Google Developers Expert (GDE) in AI & Angular, an author of 3 world-wide published books, an Educator, and a Software Architect. https://bio.link/codewithahsan Show more

Cristhian Fernandez

Cristhian Fernandez

I'm a Solutions Architect with over 20 years of experience in software development, primarily focused on designing and delivering solutions using the Microsoft technology stack.

I've worn many hats throughout my career, but my passion lies in helping organisations build impactful systems, most recently leveraging Dynamics 365 and the Power Platform. I enjoy guiding customers in unlocking the full potential of these tools and driving real value from their digital transformation efforts.

As an active member of the Power Platform community, I’m always eager to share knowledge, connect with others, and keep learning. I’ve been honoured to receive the Microsoft MVP award in recognition of these contributions—an achievement that’s as rewarding as the friendships and experiences the community brings.

I'm a Solutions Architect with over 20 years of experience in software development, primarily focused on designing and delivering solutions using the Microsoft technology stack. I've worn many hats throughout my career, but my passion lies in help... Show more

Norm Young

Norm Young

Norm Young is a Power Platform Solution Architect at AvePoint. He is a 6-time Microsoft MVP with a focus on building collaborative solutions using SharePoint, Microsoft Teams and the Power Platform.

Norm blogs and speaks about Microsoft 365, the Power Platform and how they are better together and with a little bit of help from the community we can all do awesome things with technology.

Norm Young is a Power Platform Solution Architect at AvePoint. He is a 6-time Microsoft MVP with a focus on building collaborative solutions using SharePoint, Microsoft Teams and the Power Platform. Norm blogs and speaks about Microsoft 365, the P... Show more

Olivier Van Steenlandt

Olivier Van Steenlandt

Olivier Van Steenlandt is a Business Intelligence Professional who spent most of his early career assisting retail companies to get more value of their data using the Microsoft BI Stack (SSIS, SSAS, SSRS, Power BI).

As his first experience in the field (in Business Intelligence), Olivier worked as a Big Data Analyst using tools such as Hadoop and Spark.

In 2015 the focus changed to traditional data warehousing & reporting using SSIS, SSRS & MicroStrategy. A bit later, around June 2019, the opportunity arose to fill the position of BI Teamlead. In this function he was able to set up a hybrid BI Team (team members in Belgium and Belarus).

Early 2020, Olivier joined the dataMinds crew as a core member, assisting to organise several events.

Around April 2021, Olivier started a new position as BI Teamlead in another Retail Company to support business growth. Besides the challenge to help the BI Team grow and deliver projects on time, he started to use SSAS & Power BI.

In April 2025, Olivier stepped away from internal positions and became an independent consultant.

When Olivier is not working there is a high chance that you find him on a football field, studying (BI Related), playing music (Saxophone / Piano) or cooking.

Olivier Van Steenlandt is a Business Intelligence Professional who spent most of his early career assisting retail companies to get more value of their data using the Microsoft BI Stack (SSIS, SSAS, SSRS, Power BI). As his first experience in the ... Show more

Samantha St-Louis (Allegrini)

Samantha St-Louis (Allegrini)


Samantha St-Louis is the VP of AI App Innovation at Atmosera, where she leads enterprise-scale AI and agentic system strategy for global organizations. Her work focuses on designing intelligent, scalable AI architectures that move beyond experimentation into real operational and business impact.

With a background spanning cloud architecture, AI engineering, healthcare, and education, Samantha specializes in translating complex AI concepts into clear decision frameworks that executives, architects, and practitioners can actually use. She is known for building systems that connect strategy to execution, whether that means multi-agent orchestration, AI governance, or practical GenAI adoption.

As a Microsoft MVP and Microsoft Certified Trainer, Samantha brings a rare blend of hands-on technical depth and compelling communication. Her talks are pragmatic, honest, and grounded in real projects helping organizations avoid AI sprawl and focus on outcomes.

Beyond technology, Samantha is a strong advocate for women carving unconventional paths into tech leadership. Her own journey informs her work, her teaching style, and her belief that clarity, structure, and courage matter more than traditional credentials.

1. From AI Pilots to Platforms: Designing Enterprise-Grade Agentic AI
2. AI Literacy for Leaders: Making Confident Decisions in an Imperfect World
3. Better Decisions, Not Better Dashboards: How AI Actually Improves Business Outcomes

Samantha St-Louis is the VP of AI App Innovation at Atmosera, where she leads enterprise-scale AI and agentic system strategy for global organizations. Her work focuses on designing intelligent, scalable AI architectures that move beyond experiment... Show more

Loïc Magnette

Loïc Magnette

Loïc Magnette is a seasoned software developer with a strong background in consulting. Currently a senior developer at Oniryx, he specializes in Java and Angular, delivering innovative solutions and sharing his knowledge as a speaker. As a co-organizer of the Belgian Java User Group (BeJUG), he fosters connections within the developer community. Outside of tech, Loïc’s passion for wildlife inspires his work and creativity.

Loïc Magnette is a seasoned software developer with a strong background in consulting. Currently a senior developer at Oniryx, he specializes in Java and Angular, delivering innovative solutions and sharing his knowledge as a speaker. As a co-organiz... Show more

Pasha Finkelshteyn

Pasha Finkelshteyn

Years of experience in software engineering and the team's leading roles combined with his passion for Java made Pasha know all the hidden details in this IT niche. As a Developer Advocate for @Bellsoft, he educates the public on the latest software tools built by BellSoft and helps to create and test instruments for developers. He writes in Kotlin, speaks at conferences, composes a new articles, or maintains his pet projects.

Years of experience in software engineering and the team's leading roles combined with his passion for Java made Pasha know all the hidden details in this IT niche. As a Developer Advocate for @Bellsoft, he educates the public on the latest software ... Show more

Emiliano Montesdeoca

Emiliano Montesdeoca

Emiliano is a Uruguayan-Spanish software developer, Microsoft MVP in Developer Technologies, and passionate community advocate based in Tenerife. He’s also a proud dad, balancing family life with a deep commitment to tech and community.

As Team Lead at Intelequia Technologies, he drives the design of scalable cloud solutions using Microsoft technologies, blending strategic vision with hands-on execution. With years of experience tackling complex challenges, Emiliano brings strong expertise in cloud architecture and team leadership.

A frequent speaker and blogger, he shares practical insights to support and mentor the global developer community—giving back to the ecosystem that shaped his own journey.

Emiliano is a Uruguayan-Spanish software developer, Microsoft MVP in Developer Technologies, and passionate community advocate based in Tenerife. He’s also a proud dad, balancing family life with a deep commitment to tech and community. As Team Le... Show more

Haja (Yadz) Rambelontsalama

Haja (Yadz) Rambelontsalama

With a zest culture hacker and a dose of product coach, I wear the mask of product manager on a daily basis. I like to take care of a close-knit team crafting a software that works in a healthy and psychologically secure environment.

Avec un zeste de culture hacker et une dose de coach produit, je porte le masque de product manager au quotidien. J'aime m'occuper d'une équipe soudée qui conçoit un logiciel qui fonctionne dans un environnement sain et psychologiquement sûr.

With a zest culture hacker and a dose of product coach, I wear the mask of product manager on a daily basis. I like to take care of a close-knit team crafting a software that works in a healthy and psychologically secure environment. Avec un zeste... Show more

Daniel Raniz Raneland

Daniel Raniz Raneland

Raniz is a programmer, architect, speaker and coach at factor10. He is a problem solver who keeps track of the bigger picture. He is prestigeless, likes to get into new domains, and loves sharing knowledge and ideas. Raniz has worked with system- and software architecture at several companies since 2010 and has been with factor10 since 2021. When not working he's into beer brewing, sourdough bread, 3D printing and triathlons.

Raniz is a programmer, architect, speaker and coach at factor10. He is a problem solver who keeps track of the bigger picture. He is prestigeless, likes to get into new domains, and loves sharing knowledge and ideas. Raniz has worked with system- and... Show more

Angel Ramirez

Angel Ramirez

Angel Ramirez is a technology leader and entrepreneur with expertise in software product development, cloud-native technologies, and Kubernetes (Kubestronaut). As CEO of Cuemby, he develops innovative solutions that align technical concepts with business goals. A CNCF and TODO OSPO Ambassador, Angel is recognized for his public speaking abilities, making complex ideas easy to understand. His approach integrates technology and business strategy, helping organizations achieve scalable solutions while fostering ongoing learning and community engagement.

Angel Ramirez is a technology leader and entrepreneur with expertise in software product development, cloud-native technologies, and Kubernetes (Kubestronaut). As CEO of Cuemby, he develops innovative solutions that align technical concepts with busi... Show more

Zahhar Kirillov

Zahhar Kirillov

During 20+ years spent in ICT industry, I had a privilege to wear all possible hats, acting as a software developer, UX designer, university lecturer, startup entrepreneur, CIO and finally as a delivery manager at S&P500 engineering company. Creating software is my biggest passion. I stay hands-on by delivering PoC and MVP to clients, diving into all aspects of modern technology, be it cloud computing, blockchain or AI. Originally from Estonia, since 2016 I live in Switzerland and in free time I enjoy doing yoga and snowboarding.

During 20+ years spent in ICT industry, I had a privilege to wear all possible hats, acting as a software developer, UX designer, university lecturer, startup entrepreneur, CIO and finally as a delivery manager at S&P500 engineering company. Creating... Show more

Marco Caruso

Marco Caruso

Microsoft MVP in Copilot Studio | CTO K2 NEXT
Solution Architect with a strong background in Microsoft solutions, I began my career focusing on SharePoint before expanding into the Azure ecosystem, where I gained experience designing scalable and secure cloud architectures. In recent years, I’ve specialized in Low Code development using Microsoft Power Platform, delivering enterprise-grade solutions that integrate Power Apps, Power Automate, and Dataverse.

I'm the Microsoft MVP in Copilot studio and currently, I design and implement intelligent agents with Copilot Studio, supporting organizations in the strategic adoption of generative AI and in defining resilient, scalable architectural models. I collaborate closely with cross-functional teams to drive digital transformation through modern, composable, and business-oriented solutions.

As a speaker, I’ve participated in several industry events such as WPC, BeConnected Day, Agent Conf, and others, sharing insights and best practices on cloud-native architectures, Power Platform governance, and advanced automation and AI scenarios.

Microsoft MVP in Copilot Studio | CTO K2 NEXT Solution Architect with a strong background in Microsoft solutions, I began my career focusing on SharePoint before expanding into the Azure ecosystem, where I gained experience designing scalable and s... Show more

Esther Barthel

Esther Barthel

Esther Barthel has worked in different roles and functions as an IT consultant after she finished her Master’s degree in Computer Science in 1997. She soon discovered that End User Computing combined servers, desktops, and user experience technologies into one and specialized in virtualization solutions, like Microsoft Remote Desktop Services, Citrix Virtual Apps & Desktops and Azure Virtual Desktops

Esther works as a Senior Solutions Architect at cognition IT, where she combines her passion for designing and implementing End User Computing (EUC) solutions with her love for DevOps, using Infrastructure-as-Code, PowerShell scripting, REST APIs, and JSON payloads for process automation of managing infrastructure focused resources (both on-premises and Cloud).

Ever since she hosted introduction days for technical female student candidates Esther has shared her passion and knowledge for IT. She has also been a strong advocate of diversity and inclusion as one of the founders of the CUGC Women in Tech mentorship program.

In addition to her Microsoft Most Valuable Professional (MVP) award, Esther is also awarded as a Nerdio Valued Professional (NVP), and Parallels VIPP.

Esther Barthel has worked in different roles and functions as an IT consultant after she finished her Master’s degree in Computer Science in 1997. She soon discovered that End User Computing combined servers, desktops, and user experience technologie... Show more

Michael Durkan

Michael Durkan

Michael is a Microsoft Azure MVP with over 20 years experience in both On-premises , Hybrid and Cloud environments with a particular focus on giving customers trusted advice in their Cloud Migration strategy.

Michael has spoken at both user groups and in-person conferences covering topics across the entire Azure platform from Azure Core Compute to Azure PaaS services. He has published LinkedIn Learning courses on the AZ-801 exam objectives, and regularly blogs at michaeldurkan.com. He contributes regularly to the Microsoft Q&A platform as an Azure Community Champion.

He works for Accenture as their Lead Azure Architect, where he designs and leads the delivery of complex Azure solutions for enterprise customers in Ireland and the UK .

Michael is a Microsoft Azure MVP with over 20 years experience in both On-premises , Hybrid and Cloud environments with a particular focus on giving customers trusted advice in their Cloud Migration strategy. Michael has spoken at both user grou... Show more

Ian Cooper

Ian Cooper

Polyglot Coding Architect in London, founder of #ldnug, speaker, tabletop gamer, geek. Tattooed, pierced, and bearded. The 'guv' on @BrighterCommand

Polyglot Coding Architect in London, founder of #ldnug, speaker, tabletop gamer, geek. Tattooed, pierced, and bearded. The 'guv' on @BrighterCommand Show more

Serge Luca

Serge Luca

Serge Luca, also known as Doctor Flow, is a 19-time Microsoft MVP and currently a Business Applications MVP specializing in Power Automate, Power Apps, and Copilot Studio. Based in Brussels, Belgium, he works as a Power Platform Solution Architect and has designed and delivered more than 18 enterprise-scale Power Platform projects.

An international and Microsoft Ignite speaker, Serge is also a frequent blogger and community contributor. He has completed multiple assignments for the Microsoft SharePoint team in Redmond, worked on projects worldwide, and served as a Subject Matter Expert for Microsoft Learning on SharePoint and Workflow Foundation.

Serge has trained over a thousand developers in SharePoint technologies and is the author of the renowned Master Class Microsoft Power Automate and Master Class Power Apps workshops. He also collaborated with the Flow team to help create the “Microsoft Power Automate in a Day” workshop.

In addition, Serge is the creator of the open-source Power Platform BPM Toolkit, available on GitHub. Earlier in his career, he worked as a researcher at the University of Namur (Belgium) and as a contractor for Microsoft (USA).

Serge Luca, also known as Doctor Flow, is a 19-time Microsoft MVP and currently a Business Applications MVP specializing in Power Automate, Power Apps, and Copilot Studio. Based in Brussels, Belgium, he works as a Power Platform Solution Architect an... Show more

Maurizio Ipsale

Maurizio Ipsale

Maurizio Ipsale was born in Messina (Italy) in 1978 where he graduated in Electronic Engineering at the age of 23 and obtained a Ph.D. degree. Passionate about the ICT world, his professional curriculum has been enriched with many certifications, in particular as an instructor of official training courses, such as Cisco, Juniper, Huawei, Amazon AWS, and Google Cloud.
He delivers training courses all around the world on many state-of-the-art technologies, including Cloud, Networking, Machine Learning, DevOps, Data Engineering, Internet of Things, Kubernetes.
Maurizio currently lives in Modena (Italy) with his wife Liliana and two children, Simone and Alessia. He is a Google Cloud Authorized Trainer.
Starting in 2022, he's been working as a cloud lead trainer for Datatonic Academy, a Google Cloud Authorised Training Partner based in London.
In 2024 he was recognized as Google Champion Innovator for Cloud AI and ML. In 2025 he was recognized as Google Developer Expert (GDE) for Cloud and AI/ML

Maurizio Ipsale was born in Messina (Italy) in 1978 where he graduated in Electronic Engineering at the age of 23 and obtained a Ph.D. degree. Passionate about the ICT world, his professional curriculum has been enriched with many certifications, in ... Show more

Ben Kadel

Ben Kadel

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

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

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

Sander Hoogendoorn

Sander Hoogendoorn

Sander Hoogendoorn is an independent dad, avid traveler, and lifelong software developer. With over 40 years of hands-on coding experience under his belt, he still ships code every day — because once a developer, always a developer.

Currently the CTO at iBOOD, Sander has led technology at companies such as ANVA, Quby, and Klaverblad, and was once Capgemini’s global agile thought leader. But don’t expect corporate buzzwords — Sander’s known for cutting through the fluff with a post-agile mindset and a healthy disregard for outdated best practices.

He helps teams and organizations break rules that need breaking — replacing heavyweight processes with lightweight thinking, and agile dogma with actual flow. If something’s slowing your team down, chances are he’s already ranted about it in a keynote.

Onstage, Sander brings code, stories, and sharp insights — whether he’s talking disruption, continuous delivery, microservices, monads (yes, really), software architecture, or the lost art of elegant code. His talks are fast-paced, thought-provoking, and never just theory.

Sander believes in small steps, critical thinking, and building stuff that works. No silver bullets. Just better software, made by better teams.

Sander Hoogendoorn is an independent dad, avid traveler, and lifelong software developer. With over 40 years of hands-on coding experience under his belt, he still ships code every day — because once a developer, always a developer. Currently the ... Show more

Cristina Tarabini-Castellani Ciordia

Cristina Tarabini-Castellani Ciordia

Ingeniera Informática, especializada en SQL Server. Mas de 12 años modelando, desarrollando, administrando y optimizando bases de datos en un entorno en el que la información debe de llegar en el menor tiempo posible.

Ingeniera Informática, especializada en SQL Server. Mas de 12 años modelando, desarrollando, administrando y optimizando bases de datos en un entorno en el que la información debe de llegar en el menor tiempo posible. 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.