Most Active Speakers 2025

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

  • 1125 speakers
  • Auto-generated
Dejan Sarka

Dejan Sarka

Dejan Sarka, MCT, and Data Platform MVP Alumni, is an independent trainer and consultant focusing on database and business intelligence application development. Besides projects, he spends about half of his time on training and mentoring. He is the founder of the Slovenian SQL Server and .NET Users Group. Dejan Sarka is the main author or co-author of twenty books about databases and SQL Server. Dejan Sarka has also developed many courses and seminars for Radacad, Microsoft, SolidQ, and Pluralsight.

Dejan Sarka, MCT, and Data Platform MVP Alumni, is an independent trainer and consultant focusing on database and business intelligence application development. Besides projects, he spends about half of his time on training and mentoring. He is the f... Show more

Scott Durow

Scott Durow

Scott Durow is a 10 x Microsoft Business Applications MVP and Power Platform Developer Advocate at Microsoft. He is a YouTuber, Podcaster, Speaker, Author, and the creator of tools such as the Ribbon Workbench, spkl, and dataverse-ify, which have become essential tools for Power Platform developers. With over two decades of software engineering experience, he has a deep understanding of Power Platform, having built solutions using it since its early days as Microsoft CRM v1, SharePoint Server 2001 & BizTalk Server 2000. Before this, Scott moved from assembly language device driver programming, into industrial control software engineering and then on to architecting enterprise business software.

Scott is passionate about sharing his knowledge and expertise and you can see him speaking at events throughout the globe. Remaining a developer at heart, Scott embraces both low-code and pro-code solutions!

#ProCodeNoCodeUnite
#CommunityRocks

Scott Durow is a 10 x Microsoft Business Applications MVP and Power Platform Developer Advocate at Microsoft. He is a YouTuber, Podcaster, Speaker, Author, and the creator of tools such as the Ribbon Workbench, spkl, and dataverse-ify, which have bec... Show more

Rick Ossendrijver

Rick Ossendrijver

Rick Ossendrijver is a Software Engineer at Picnic, a fast-growing online supermarket. Rick is a committer and enthusiast of the Error Prone project. Moreover, he is passionate about improving software quality through static analysis and automation, and works on Picnic's open-source Error Prone Support project.

Rick Ossendrijver is a Software Engineer at Picnic, a fast-growing online supermarket. Rick is a committer and enthusiast of the Error Prone project. Moreover, he is passionate about improving software quality through static analysis and automation, ... Show more

Brooke Avery

Brooke Avery

Brooke is an Angular GDE, software engineer, Technical Program Manager, & community builder. She is the Director of the Angular Community Meetup & a co-producer/host of the Dev Life Podcast. Brooke has a strong passion for education & helping others find success in their developer journeys. Outside of programming, Brooke can be found following the sun and geeking out on Star Wars.

Brooke is an Angular GDE, software engineer, Technical Program Manager, & community builder. She is the Director of the Angular Community Meetup & a co-producer/host of the Dev Life Podcast. Brooke has a strong passion for education & helping others ... Show more

Jonathan Perry

Jonathan Perry

Dr. Jonathan Perry is a maintainer of the OpenTelemetry eBPF network collector and CEO of Unvariance, which develops tools to detect and mitigate noisy neighbors. At MIT, he built systems to enhance efficiency and reduce response times by mitigating network contention. Jonathan previously founded Flowmill, where he developed eBPF-based network monitoring tools prior to the company's acquisition by Splunk. He is based in Austin, Texas.

Dr. Jonathan Perry is a maintainer of the OpenTelemetry eBPF network collector and CEO of Unvariance, which develops tools to detect and mitigate noisy neighbors. At MIT, he built systems to enhance efficiency and reduce response times by mitigating ... Show more

Andrew Wingate

Andrew Wingate

I am passionate about using technology to understand and solve real business problems. I love sharing knowledge, discussing ideas and finding out how others solve problems. My Dynamics journey started with NAV in 2015 as an end-user, I moved to the Microsoft partner channel in 2022 where I've focused on Business Central, AL Coding, Power Platform and more recently AI prompt engineering.

I am passionate about using technology to understand and solve real business problems. I love sharing knowledge, discussing ideas and finding out how others solve problems. My Dynamics journey started with NAV in 2015 as an end-user, I moved to the M... Show more

Jorrik Klijnsma

Jorrik Klijnsma

Creative developer Jorrik bridges the gap between design and functionality. With 8+ years in front-end, he's now exploring AI's potential. At Sopra Steria, he builds innovative web solutions and shares his tech journey through public speaking.

Creative developer Jorrik bridges the gap between design and functionality. With 8+ years in front-end, he's now exploring AI's potential. At Sopra Steria, he builds innovative web solutions and shares his tech journey through public speaking. Show more

Ines Pascual Iglesias

Ines Pascual Iglesias

Computer Engineer. Independent professional. I have more than 20 years dedicated to the world of data as a BI Trainer and Consultant. Currently immersed in the world of Power Platform - Power BI.

Computer Engineer. Independent professional. I have more than 20 years dedicated to the world of data as a BI Trainer and Consultant. Currently immersed in the world of Power Platform - Power BI. Show more

Christopher Robinson

Christopher Robinson

Christopher Robinson (aka CRob) is the Chief Security Architect for the Open Source Security Foundation. With over 25 years of Enterprise-class engineering, architectural, operational and leadership experience, CRob has worked at several Fortune 500 companies with experience in the Financial, Medical, Legal, and Manufacturing verticals, and spent 6 years helping lead the Red Hat Product Security team as their Program Architect.

Christopher Robinson (aka CRob) is the Chief Security Architect for the Open Source Security Foundation. With over 25 years of Enterprise-class engineering, architectural, operational and leadership experience, CRob has worked at several Fortune 500 ... Show more

Arend-Jan Kauffmann

Arend-Jan Kauffmann

Arend-Jan Kauffmann is CTO at Lumos 365 Ltd., a UK-based partner with a Business Central solution for the energy sector.

With over 20 years of experience with Microsoft Dynamics NAV / Business Central and 30 years of experience in the IT industry, he has a solid track record in this business. With a strong focus on architecture, design and integration, he worked in different roles and with a broad range of technologies and platforms, including C/SIDE & VS Code development, C/AL and AL, Microsoft .Net, Microsoft Azure and Office 365.

He strongly believes that knowledge increases by sharing it, not by saving it. By delivering workshops and being a frequent speaker at conferences, he can put this into practice. Since 2013 Arend-Jan is awarded as Microsoft MVP Business Solutions.

Arend-Jan Kauffmann is CTO at Lumos 365 Ltd., a UK-based partner with a Business Central solution for the energy sector. With over 20 years of experience with Microsoft Dynamics NAV / Business Central and 30 years of experience in the IT industry,... Show more

Armando Lacerda

Armando Lacerda

http://bit.ly/ALacerdaProfile

http://bit.ly/ALacerdaProfile Show more

Kim Dallefeld, MVP, MCT

Kim Dallefeld, MVP, MCT

As a BC/NAV Consultant | MVP | MCT | MCP with 30 years of experience in Dynamics NAV and Business Central (BC), I specialize in empowering companies to get the most out of their ERP systems. Combining deep practical knowledge with an accounting, consulting, and development background, I bring a unique skill set rarely found in a technically oriented individual.

My Expertise:
✅ Bridging the gap between business needs and system capabilities
✅ Blueprinting user requirements vs. BC’s out-of-the-box functionality
✅ Assisting analysts in configuring BC to align with business processes
✅ Developing custom solutions to meet user-specific needs
✅ Project management to ensure successful implementations

I take a hands-on, structured approach to BC implementations—whether helping businesses optimize configurations, assisting developers in building tailored solutions, or managing projects to stay on time and on budget. My goal is to deliver a system that works for you—efficient, scalable, and built for success.

As a BC/NAV Consultant | MVP | MCT | MCP with 30 years of experience in Dynamics NAV and Business Central (BC), I specialize in empowering companies to get the most out of their ERP systems. Combining deep practical knowledge with an accounting, cons... Show more

Eli Holderness

Eli Holderness

Eli has been in tech since being released back into the wild from studying maths at university 9 years ago. They've spent their time working in industries ranging from telecoms to biotech to analog circuit design to developer advocacy, continually getting nerd-sniped along the way. These days, they work at the Bennett Institute as a Research Software Advocate, helping to build the next generation of healthcare research tooling. In their spare time, they like to go bouldering, knit and sew, and hang out with their cat.

Eli has been in tech since being released back into the wild from studying maths at university 9 years ago. They've spent their time working in industries ranging from telecoms to biotech to analog circuit design to developer advocacy, continually ge... Show more

Gerardo Mejia

Gerardo Mejia

Es especialista en ciberseguridad ofensiva, con enfoque en operaciones de red teaming, purple teaming, pruebas de penetración, campañas avanzadas de phishing y ataques dirigidos a entornos de Active Directory. Actualmente forma parte del un equipo regional de seguridad ofensiva, donde diseña y ejecuta ejercicios de simulación de adversarios para fortalecer la resiliencia de las organizaciones ante amenazas sofisticadas.

Cuenta con certificaciones destacadas, como CRTO, CRTP, PNPT, eWPT, CR (HTB Ambassador), C-ADPenX y eCCPT.

Ha sido conferencista en eventos internacionales como PWNEDCR en Costa Rica, BSides Panamá, Dojo Conf Panamá, HackConRD en República Dominicana y Ekoparty en Argentina, Defcon 33 La Villa, Kavacon

Es especialista en ciberseguridad ofensiva, con enfoque en operaciones de red teaming, purple teaming, pruebas de penetración, campañas avanzadas de phishing y ataques dirigidos a entornos de Active Directory. Actualmente forma parte del un equipo re... Show more

Clara Vega Caballero

Clara Vega Caballero

Formadora y consultora especializada en implantación de sistemas de control de gestión con Power BI.
LinkedIn learning Instructor en finanzas y gestión de proyectos y docente en programas posgrados y seminarios especializados en escuelas de negocio, empresas y asociaciones
Autora de los libros: “Inteligencia emocional en las finanzas” “Control de gestión con Excel y Power Query”
Divulgadora de contenidos en RRSS con emisiones en directo de los programas: “Finanzas comienza con F” y “Finanzas y Excel” (Vía YouTube y LinkedIn Live).

Formadora y consultora especializada en implantación de sistemas de control de gestión con Power BI. LinkedIn learning Instructor en finanzas y gestión de proyectos y docente en programas posgrados y seminarios especializados en escuelas de negoci... Show more

Gaurav Saxena

Gaurav Saxena

Gaurav Saxena is an engineering leader in the field of platform and cloud engineering with over 20 years of experience in the software industry. His technical expertise includes Stream-based architectures, Kubernetes, Service Mesh, Software Supply Chain Security, and Observability.

Gaurav Saxena is an engineering leader in the field of platform and cloud engineering with over 20 years of experience in the software industry. His technical expertise includes Stream-based architectures, Kubernetes, Service Mesh, Software Supply Ch... Show more

Christian Carballo Lozano

Christian Carballo Lozano

Christian Carballo Lozano is a Mathematician building Machine Learning and AI solutions at Plain Concepts and a Microsoft MVP in AI.

Christian Carballo Lozano is a Mathematician building Machine Learning and AI solutions at Plain Concepts and a Microsoft MVP in AI. Show more

Stefan Prodan

Stefan Prodan

Stefan is a Principal Engineer at ControlPlane and an open source contributor to cloud-native projects. He is the creator of Flagger the progressive delivery operator for Kubernetes, and a core maintainer of the CNCF's Flux project. Stefan has over 20 years of experience with software development and he enjoys programming in Go and writing about distributed systems.

Stefan is a Principal Engineer at ControlPlane and an open source contributor to cloud-native projects. He is the creator of Flagger the progressive delivery operator for Kubernetes, and a core maintainer of the CNCF's Flux project. Stefan has over 2... Show more

Uvika Sharma

Uvika Sharma

Uvika Sharma is a visionary Data & AI strategist with over 20 years of experience guiding Fortune 500 companies and startups in leveraging data and AI for transformative impact. She has held key roles at industry giants such as Pfizer, Accenture, S&P, Moody’s, and Citi, advising global teams across Marketing, Operations, Compliance, Risk Management, and International Trade.

As the Founder & Managing Partner of INTLDA, Uvika helps businesses responsibly harness AI and data to drive efficiency and growth. She also leads advisory services at AI 2030, advocating for responsible and ethical AI practices. Recognizing AI’s potential as a business equalizer, she is co-authoring a book on custom GPT development with OpenAI’s builder tool, simplifying AI adoption for businesses.

Beyond her advisory work, Uvika is deeply committed to mentoring and supporting startups. She actively advises early-stage companies through Cornell Tech’s PhD Runway Program and Harvard Business School’s Startup Partners program, guiding founders on AI strategy, product-market fit, and scaling operations.

Passionate about diversity in tech, Uvika mentors undergraduate women in AI through Cornell Tech’s Break Through Tech AI Program and co-founded Asian Women Advancing AI, a community dedicated to empowering Asian women to shape the future of AI.

A sought-after speaker and workshop leader, Uvika helps senior executives and organizations navigate AI’s evolving landscape, bridging the gap between cutting-edge technology, business strategy, and responsible AI governance.

She holds a Computer Science degree from Stony Brook University and an MBA from Cornell University, combining technical expertise with business acumen to drive innovation, strategic growth, and responsible technology adoption.

Uvika Sharma is a visionary Data & AI strategist with over 20 years of experience guiding Fortune 500 companies and startups in leveraging data and AI for transformative impact. She has held key roles at industry giants such as Pfizer, Accenture, S&P... Show more

Rossana Suarez

Rossana Suarez

Soy Roxs, Software Engineer apasionada por la tecnología y la innovación. Como DevOps, GitLab HERO, AWS HERO y Docker Captain, busco empoderar a la comunidad tech y fomentar la colaboración. Creo firmemente que 'No se puede crecer si no estás dispuesto a saltar a la zona de peligro', y vivo cada desafío profesional con esa mentalidad. Exploradora de nuevas fronteras en el desarrollo y la automatización, mi objetivo es impactar positivamente y ayudar a otros a alcanzar su máximo potencial.

Soy Roxs, Software Engineer apasionada por la tecnología y la innovación. Como DevOps, GitLab HERO, AWS HERO y Docker Captain, busco empoderar a la comunidad tech y fomentar la colaboración. Creo firmemente que 'No se puede crecer si no estás dispues... Show more

Anshika Koul

Anshika Koul

Anshika has 14 years experience developing software at Posten Bring - Norwegian National Postal Service, building logistics systems and APIs that enable millions of people in the Nordics to order and receive packages. She values studying users, and fostering cross-departmental collaboration and building great products with her team. A typical day at work involves climbing stairs to the 18th floor of Posten Bring's towering headquarters in the heart of Oslo, where she will transform whiteboard scribbles into deployed features.

She loves sharing fun stories and experiences at tech conferences and embracing new challenges. She's spoken at 13 international conferences over the past year including Javazone, JFokus, Adacon, JCON, NDC Oslo, KotlinConf, JavaDay Istanbul, DevBcn and Devoxx Poland among others.

Off-duty you'll find her chasing sunsets and culinary adventures, sampling flavours from around the globe.

Anshika has 14 years experience developing software at Posten Bring - Norwegian National Postal Service, building logistics systems and APIs that enable millions of people in the Nordics to order and receive packages. She values studying users, and f... Show more

Matteo Collina

Matteo Collina

Matteo is the Co-Founder and CTO of Platformatic.dev. He is also a prolific Open Source author in the JavaScript ecosystem and modules he maintain are downloaded more than 12 billion times a year. Previously he was Chief Software Architect at NearForm, the best professional services company in the JavaScript ecosystem. In 2014, he defended his Ph.D. thesis titled "Application Platforms for the Internet of Things". Matteo is a member of the Node.js Technical Steering Committee focusing on streams, diagnostics and http. He is also the author of the fast logger Pino and of the Fastify web framework. Matteo is an renowed international speaker after more than 60 conferences, including OpenJS World, Node.js Interactive, NodeConf.eu, NodeSummit, JSConf.Asia, WebRebels, and JsDay just to name a few. He is also co-author of the book "Node.js Cookbook, Third Edition" edited by Packt. In the summer he loves sailing the Sirocco.

Matteo is the Co-Founder and CTO of Platformatic.dev. He is also a prolific Open Source author in the JavaScript ecosystem and modules he maintain are downloaded more than 12 billion times a year. Previously he was Chief Software Architect at NearFor... Show more

John Belamaric

John Belamaric

John is a Sr Staff SWE, co-chair of K8s SIG Architecture and of K8s WG Device Management, helping lead efforts to improve how GPUs, TPUs, NICs and other devices are selected, shared, and configured in Kubernetes. He is also co-founder of Nephio, an LF project for K8s-based automation, and a maintainer of CoreDNS, a CNCF project for DNS-based service discovery.

John holds three patents, and is co-author of "Learning CoreDNS" from O’Reilly and "OpenStack Cloud Application Development" from Wiley.

John is a Sr Staff SWE, co-chair of K8s SIG Architecture and of K8s WG Device Management, helping lead efforts to improve how GPUs, TPUs, NICs and other devices are selected, shared, and configured in Kubernetes. He is also co-founder of Nephio, an L... Show more

Paula Januszkiewicz

Paula Januszkiewicz

Paula Januszkiewicz is the Founder and CEO of CQURE and CQURE Academy, companies she established back in 2008. She is also an Enterprise Security MVP, honorable Microsoft Regional Director, and a world-class cybersecurity expert, consulting Customers worldwide. In 2017, Paula graduated from Harvard Business School. She delivers keynotes and sessions at the biggest world conferences such as RSA, Black Hat, Microsoft Ignite, SecTor Canada, Australian Cyber Conference, GISEC, GITEX, LEAP, and many others. She is often a top-rated speaker, including being chosen as the No. 1 Speaker at Microsoft Ignite (among 1,100 speakers at a conference with 26,000 attendees) and at Black Hat Asia 2019. At the RSA Conference, two of her sessions were among the top 5 best rated. Paula is known for her unique stage presence that is always well-received among diverse audiences, often gathering thousands of people!

Paula has over 19 years of experience in the cybersecurity field, performing penetration tests, architecture consulting, trainings, and seminars. Every year, she takes over 200 flights to provide cybersecurity services for CQURE’s Customers. Paula and her Team also design security awareness programs for various organizations, including awareness sessions for top management. Together, they create various security tools (CQTools) supporting penetration tests, incident response, and forensics, which are shared with the community. Paula is a member of the Technical Advisory Board at the Royal Bank of Scotland/Natwest. And to top it all off, she has access to the source code of Windows!

Paula Januszkiewicz is the Founder and CEO of CQURE and CQURE Academy, companies she established back in 2008. She is also an Enterprise Security MVP, honorable Microsoft Regional Director, and a world-class cybersecurity expert, consulting Customers... Show more

Kristen Hosman

Kristen Hosman

With over 20 years in accounting, ERP systems, and Microsoft Dynamics, Kristen Hosman created Mount Evans Consulting to create accounting systems that fit each small business perfectly.

Kristen is a schooled accountant with a diverse background of accounting experience and brings these experiences and knowledge in working with small businesses to provide the solutions to fit their unique accounting needs. In addition, she is extensively involved in the Microsoft Dynamics community and regularly offers her valuable knowledge in open forums, interviews, and conference appearances.

Kristen serves on the advisory committee for Dynamics User Group (DUG). Her services and experience have earned her a renowned name, four consecutive GPUG All-Star nominations, a Granite Award, and Dynamics 365 All Star Award nomination. Kristen has also been recognized as a Microsoft MVP five years in a row, a recognition reserved for top technology experts who passionately share their knowledge with the community. As a Microsoft Certified Dynamics 365 Business Central Functional Consultant, she demonstrates a high level of domain expertise and can tackle even the most challenging projects.

With over 20 years in accounting, ERP systems, and Microsoft Dynamics, Kristen Hosman created Mount Evans Consulting to create accounting systems that fit each small business perfectly. Kristen is a schooled accountant with a diverse background o... Show more

Olha Pyvko

Olha Pyvko

Ukrainian living in Sweden, applying engineering mindset for processes creation.
I am always fascinated about solving tricky puzzles and coming up with new ways to look for the problem.
I got a master degree in Telecommunications in 2016 and started my career in IT as a data conversion specialist, working with databases and customers. I got experience from working as a customer support manager, tech writer for user guides and manuals and then as a product specialist, before coming to work close with Agile as a Product Owner. I enjoyed building the right thing as much as building the thing right and fast. My Scrum Master journey started in 2020 and grew from 2 co-located teams to 8 distributed teams working on the same product with LeSS. And it's just the beginning!

Ukrainian living in Sweden, applying engineering mindset for processes creation. I am always fascinated about solving tricky puzzles and coming up with new ways to look for the problem. I got a master degree in Telecommunications in 2016 and star... Show more

Nandan Hegde

Nandan Hegde

I have 7 yrs of experience in IT world and 2 years as a Data Architect in Azure.
I am a MSFT Data MVP and part of MSFT Community champion team in Data sector :
https://learn.microsoft.com/en-us/users/nandanhegde-7720/

And author of the blog: https://datasharkx.wordpress.com/

I have 7 yrs of experience in IT world and 2 years as a Data Architect in Azure. I am a MSFT Data MVP and part of MSFT Community champion team in Data sector : https://learn.microsoft.com/en-us/users/nandanhegde-7720/ And author of the blog: ht... Show more

Andy Yun

Andy Yun

Andy Yun is a Field Solutions Architect at Pure Storage, and has been a SQL Server data professional for almost 25 years. He focuses on performance tuning, with expertise in T-SQL, storage engine internals, and monitoring. Andy strongly believes in passing knowledge onto others, regularly speaking at conferences and user groups, and mentoring industry colleagues. Andy is a former Microsoft MVP, co-founder of the Chicago SQL Association, former co-leader of the Chicago Suburban User Group and Chicago SQL Saturday Organizing Committee.

Andy Yun is a Field Solutions Architect at Pure Storage, and has been a SQL Server data professional for almost 25 years. He focuses on performance tuning, with expertise in T-SQL, storage engine internals, and monitoring. Andy strongly believes in p... 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

Nic Vermande

Nic Vermande

Nic is an experienced hands-on technologist, evangelist and product owner who has been working in the fields of Cloud-Native technologies, Open Source Software, Virtualization and Datacenter networking for the past 21 years.

Passionate about enabling users and building cool tech solving real-life problems, you'll often see him speaking at global tech conferences and online events, spreading the word and walking the walk with customers and users.

Nic is an experienced hands-on technologist, evangelist and product owner who has been working in the fields of Cloud-Native technologies, Open Source Software, Virtualization and Datacenter networking for the past 21 years. Passionate about enabl... 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.