Most Active Speakers 2025

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

  • 1125 speakers
  • Auto-generated
Verónica Rivas Remiseiro

Verónica Rivas Remiseiro

A computer engineer with over 25 years of experience, my profession has fascinated me since I was a child, providing me with wonderful professional and personal experiences 👩‍💻

I enjoy building teams, sharing with them, growing together, and executing projects with the greatest possible success 👌

Enjoying my full return to the world of technology, security, AI, etc., constantly learning and exploring because knowledge is power, in addition to working as an event moderator, speaker, and writer 🚀

Author of my first book based on personal events with a stowaway named Alzheimer's, in homage to the woman who helped me become who I am today 🧠

Passionate about my life, my profession, and technology 💛

A computer engineer with over 25 years of experience, my profession has fascinated me since I was a child, providing me with wonderful professional and personal experiences 👩‍💻 I enjoy building teams, sharing with them, growing together, and exe... Show more

Erica Hughberg

Erica Hughberg

Erica Hughberg is a technical leader, experienced public speaker, and community advocate passionate about helping engineering teams build scalable, secure, and human-centric platforms for the AI era.

As a maintainer of Envoy AI Gateway, she plays a key role in enabling organizations to securely and efficiently integrate AI-powered services into their systems and solutions.

Erica Hughberg is a technical leader, experienced public speaker, and community advocate passionate about helping engineering teams build scalable, secure, and human-centric platforms for the AI era. As a maintainer of Envoy AI Gateway, she plays ... Show more

Rik Hepworth

Rik Hepworth

Rik helps organisations use Cloud better as CEO and co-founder of Zure UK. Whether that is a new adoption where governance and management are key, or an application modernisation project where technology choice and team knowledge are important factors in success.
Through his public speaking and community involvement, Rik is a recipient of the Microsoft MVP Programme award for his work with Azure. He is also proud to be a member of the Microsoft Regional Director Programme. As an event organiser, speaker and lapsed blogger, Rik is keen to share his knowledge with the community, and encourage and support others as they do the same.
His grey hair is an indication of how long he has worked in IT, and in that time he's done most things you'd expect of an IT Pro: From crawling under floors pulling cables, to managing large scale automated OS rollouts, to architecting solutions for on-premises and cloud. Now he spends more time working with his customers' management, sharing that breadth of experience and learning.

Rik helps organisations use Cloud better as CEO and co-founder of Zure UK. Whether that is a new adoption where governance and management are key, or an application modernisation project where technology choice and team knowledge are important factor... Show more

Angela Velasco Perea

Angela Velasco Perea

Power Platform Developer

Power Platform Developer Show more

Muhammad Samiullah

Muhammad Samiullah

Hi, I’m Muhammad Samiullah, a Solution Engineer and a Microsoft Most Valuable Professional (MVP) in Azure and Developer Technologies. I design and deliver secure, scalable cloud and AI solutions, with a focus on automation, cost optimization, and operational excellence, helping organizations maximize the value of their technology investments.

Previously a Microsoft for Startups Expert, I mentored founders on building and scaling solutions with Microsoft technologies and guided teams to leverage Artificial Intelligence (M365 & GitHub Copilot) for measurable business impact.

Beyond my professional work, I’m committed to community building. As a Gold Microsoft Student Ambassador and lead of the Microsoft Learn Student Community’s Karachi chapter, I have organized impactful events and initiatives that connect students with industry leaders and inspire the next generation of technology professionals.

My mission is to foster innovation, drive growth, and make technology accessible to both individuals and businesses aiming to scale and thrive in the digital age.

Hi, I’m Muhammad Samiullah, a Solution Engineer and a Microsoft Most Valuable Professional (MVP) in Azure and Developer Technologies. I design and deliver secure, scalable cloud and AI solutions, with a focus on automation, cost optimization, and ope... Show more

Injae Park

Injae Park

Injae Park is a Microsoft Data Platform MVP who combines his technical expertise with a passion for teaching by sharing his insights and practical tips through his YouTube channel @PowerBIPark. Injae's content ranges from beginner tutorials to advanced techniques, and his background in psychology and economics as well as his experience in consulting gives him a well-rounded perspective on the Power BI Developer experience, making his tutorials both engaging and accessible.

Injae Park is a Microsoft Data Platform MVP who combines his technical expertise with a passion for teaching by sharing his insights and practical tips through his YouTube channel @PowerBIPark. Injae's content ranges from beginner tutorials to advanc... Show more

Tim Damen

Tim Damen

Driven by the mission to make people's lives easier, Tim Damen actively advocates for and builds a web that serves everyone equally. Tim is a frontend developer, web accessibility specialist, and engineering manager from Amsterdam, the Netherlands 🇳🇱. With over a decade of experience, primarily at major financial institutions, Tim has spoken at various conferences and meetups. He also hosts "focustrap," a podcast about digital accessibility.

Driven by the mission to make people's lives easier, Tim Damen actively advocates for and builds a web that serves everyone equally. Tim is a frontend developer, web accessibility specialist, and engineering manager from Amsterdam, the Netherlands 🇳... Show more

Alex Powers

Alex Powers

From financial services to felines, the World Wide Web to professional wrestling - Alex Powers has an affinity for the conventional and unconventional when it comes to information. A self-proclaimed Microsoft Evangelist Alex Powers enjoys contributing to online forums and sharing his passion for empowering others using Microsoft products and services.

From financial services to felines, the World Wide Web to professional wrestling - Alex Powers has an affinity for the conventional and unconventional when it comes to information. A self-proclaimed Microsoft Evangelist Alex Powers enjoys contributin... Show more

Aakash Singhal

Aakash Singhal

Aakash is a seasoned Engineering Leader with experience in leading complex transformations in disruptive markets. Aakash is able to broker trusted relationships quickly, coupled with a strong executive presence to influence across organizations on how to build world-class product experiences. Having the opportunity to work across many industries like Retail, Healthcare and Financial Services, Aakash has led the innovation and experimentation of many new and modern practices. Aakash is always focused on taking a data-driven approach, learning from what has worked and what has failed before. Aakash solemnly believes that everyone in an organization is capable of delivering great outcomes and focuses on enabling high-performing nimble teams.

Aakash is a seasoned Engineering Leader with experience in leading complex transformations in disruptive markets. Aakash is able to broker trusted relationships quickly, coupled with a strong executive presence to influence across organizations on ho... Show more

Hazel Saenz

Hazel Saenz

Hazel Saenz is a LATAM Developer Advocate at Amazon Web Services (AWS) and a Former AWS Serverless Hero, with over 20 years of experience in application development and 6 years working with cloud technologies.

She specializes in serverless architectures, event-driven systems, and Generative AI on AWS, and is a frequent speaker at AWS Summits, Community Days, and international conferences, sharing practical knowledge with the developer community across Latin America.

Hazel Saenz is a LATAM Developer Advocate at Amazon Web Services (AWS) and a Former AWS Serverless Hero, with over 20 years of experience in application development and 6 years working with cloud technologies. She specializes in serverless archite... Show more

Stefan Sosic

Stefan Sosic

Stefan is a Microsoft MVP, Business Central expert and the Co-Founder and CEO of BCILITY, where he leads innovative solutions for Business Central users. He actively contributes to the Microsoft Dynamics community, sharing his knowledge and enhancing the platform through open-source Microsoft projects. As a frequent speaker at Business Central conferences, Stefan captivates audiences with his deep expertise and passion for the subject. His dedication to continuous learning and community collaboration sets him apart as a leader in the field.

Stefan is a Microsoft MVP, Business Central expert and the Co-Founder and CEO of BCILITY, where he leads innovative solutions for Business Central users. He actively contributes to the Microsoft Dynamics community, sharing his knowledge and enhancing... Show more

Gianni Ceresa

Gianni Ceresa

A Data enthusiast more widely interested in Business Analytics/DW/EPM solutions with a special focus on Oracle products and solutions.
Oracle ACE Director, owner of DATAlysis LLC, a consulting company in Switzerland, he has more than 15 years of experience in multiple project roles like architect, analyst, team lead and developer, bridging together the business and the technical side of the BA world.
His other activities include training delivery, R&D, blogging and supporting the Oracle community on the forums and by presenting at multiple events.

A Data enthusiast more widely interested in Business Analytics/DW/EPM solutions with a special focus on Oracle products and solutions. Oracle ACE Director, owner of DATAlysis LLC, a consulting company in Switzerland, he has more than 15 years of ex... Show more

Sergey Chubarov

Sergey Chubarov

Sergey Chubarov is a Security and Cloud Expert with over 15 years of extensive experience in Microsoft technologies. As an instructor, Sergey is dedicated to guiding companies through the complexities of securely adopting cloud solutions. His consulting experience spans both the red and blue sides.

Certifications and recognitions include Microsoft MVP: Cloud Security, OSCP, OSEP, MCT, MCT Community Lead, EC Council CPENT & LPT, CREST CPSA & CRT, and many more.

Frequent Speaker at Prestigious Conferences: Black Hat, Hacker Halted, DEF CON, Wild West Hackin' Fest, Workplace Ninja Summit, Midwest Management Summit, and many others.

Prefers live demos and cyberattacks simulations.

Sergey Chubarov is a Security and Cloud Expert with over 15 years of extensive experience in Microsoft technologies. As an instructor, Sergey is dedicated to guiding companies through the complexities of securely adopting cloud solutions. His consult... Show more

Emilie Rønning

Emilie Rønning

Emilie Rønning, a data girl in a Fabric world.

She is a managing data engineer, based in Oslo, Norway. In addition to creating well-functioning insights and analysis data platforms, Emilie loves creating and implementing structure and solutions automating manual processes for her clients.

When not geeking out, she enjoys a long hike and a night or two in her hammock.

Emilie Rønning, a data girl in a Fabric world. She is a managing data engineer, based in Oslo, Norway. In addition to creating well-functioning insights and analysis data platforms, Emilie loves creating and implementing structure and solutions a... Show more

Matthias Geisler

Matthias Geisler

True believer in (Kotlin) Multiplatform and working with it since 2019. Builds solutions for Android.
Organizer of KUG Berlin, GDG Android Berlin, XTC Berlin and more.

True believer in (Kotlin) Multiplatform and working with it since 2019. Builds solutions for Android. Organizer of KUG Berlin, GDG Android Berlin, XTC Berlin and more. Show more

Dr Roushanak Rahmat

Dr Roushanak Rahmat

Dr Roushanak Rahmat is a renowned Enterprise AI Architect, Google Developer Expert (AI & Cloud), and recognized as one of the Top 100 Women in Tech (2025). With a PhD in Artificial Intelligence and over 15 years of cross-functional experience spanning elite academia and global enterprise industries, she specializes in the deployment of large-scale Generative AI, Agentic AI, and advanced Deep Learning architectures.

Currently executing cutting-edge AI strategy as a senior architect, Roushanak’s career highlights include leading enterprise-level AI transformations across consulting sectors and pioneering healthcare innovations. As a key AI expert at Elekta, she became a US patent inventor by developing deep learning models that revolutionized multimodal imaging and radiotherapy for cancer treatment.

Her technical foundation is backed by an extensive research and academic footprint, having conducted advanced AI and computer vision research at prestigious institutions including the University of Cambridge, the University of St Andrews, and the Institute of Cancer Research, alongside lecturing at Ulster University.

An elite public speaker and industry thought leader with a global community of over 23,000 followers, Roushanak is deeply passionate about bridging the gap between complex AI research and enterprise execution. She is a highly active keynote speaker, tech blogger, Women Techmakers Ambassador, and dedicated mentor who frequently shares insights on GenAI, RAG pipelines, and career scaling with audiences worldwide.

Dr Roushanak Rahmat is a renowned Enterprise AI Architect, Google Developer Expert (AI & Cloud), and recognized as one of the Top 100 Women in Tech (2025). With a PhD in Artificial Intelligence and over 15 years of cross-functional experience spannin... Show more

Marcin Siewnicki

Marcin Siewnicki

I am Microsoft 365 solution architect. I create applications and solutions that improve and facilitate work using Power Platform, SharePoint, and Teams.

My adventure in IT began in 2005. Since then I have been creating and implementing business applications based on SharePoint and Microsoft 365 platforms. I am a big fan of task and process automation (Power Automate) and Modern Workplace platforms (Microsoft Teams).

Privately a husband, father of 2 sons. Fan of science fiction and cyberpunk, futurist. I co-organize the SharePoint Saturday Warsaw conference and speak at Microsoft's community events.

I am Microsoft 365 solution architect. I create applications and solutions that improve and facilitate work using Power Platform, SharePoint, and Teams. My adventure in IT began in 2005. Since then I have been creating and implementing business ap... Show more

Barkha Herman

Barkha Herman

Barkha Herman is a technologist, experienced developer advocate, and the founder of WiTVoices and South Florida Women in Tech. With a deep understanding of technology and a love for fostering inclusive and diverse tech communities, Barkha is dedicated to empowering individuals and organizations to thrive in the rapidly evolving digital landscape.

In addition to her work at WiTVoices, she takes great pride in leading South Florida Women in Tech. These organizations are committed to empowering women in technology and creating a supportive environment for their professional growth. Through mentorship programs, networking events, and educational initiatives, they strive to break barriers and foster inclusivity in the tech industry.

Barkha Herman is a technologist, experienced developer advocate, and the founder of WiTVoices and South Florida Women in Tech. With a deep understanding of technology and a love for fostering inclusive and diverse tech communities, Barkha is dedicate... Show more

Hugo Guerrero

Hugo Guerrero

Hugo Guerrero specializes in building the backbone of the AI era. As a technology leader, he focuses on AI-ready infrastructure, modern API strategy, and scalable event-driven systems. A frequent speaker and advocate for developer ecosystems, Hugo is passionate about turning complex architectural concepts into real-world results. He works at the intersection of connectivity and intelligence, ensuring that today’s infrastructure is ready for tomorrow’s agentic workflows.

Hugo Guerrero specializes in building the backbone of the AI era. As a technology leader, he focuses on AI-ready infrastructure, modern API strategy, and scalable event-driven systems. A frequent speaker and advocate for developer ecosystems, Hugo is... Show more

Daniel Rohregger

Daniel Rohregger

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

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

🌇 Regensburg, Germany near Munich area

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

Daniel Patkos

Daniel Patkos

I began my career as a business and technology consultant, quickly transitioning into implementation and BI development. I’ve used several BI tools along the way—Tableau, Domo, and Spotfire—but Power BI has been the core of my work for many years.

My focus started with data visualization and clear data communication, and has grown to include data architecture and development practices. I’m currently working with Microsoft Fabric and promoting the use of source control and CI/CD to improve the Power BI development lifecycle.

I began my career as a business and technology consultant, quickly transitioning into implementation and BI development. I’ve used several BI tools along the way—Tableau, Domo, and Spotfire—but Power BI has been the core of my work for many years. ... Show more

Renuka Kelkar

Renuka Kelkar


Renuka Kelkar is a trailblazing figure in the tech industry, known for her multifaceted roles as Co-Founder of ARNA Genext Solutions, Google Developer Expert for Flutter and Dart, and Founder of the TechPowerGirls Community. With a passion for fostering diversity and inclusion, she serves as an organizer for GDG London and a WomenTechmaker ambassador. Renuka's impactful contributions were recognized with the prestigious Diversity and Inclusion Award from Google in 2023. Her dynamic speaking prowess has earned her the prestigious title of Most Active Speaker for the past two years consecutively on Sessionize, cementing her reputation as a driving force in the tech community.

Renuka Kelkar is a trailblazing figure in the tech industry, known for her multifaceted roles as Co-Founder of ARNA Genext Solutions, Google Developer Expert for Flutter and Dart, and Founder of the TechPowerGirls Community. With a passion for fost... Show more

Cecilia Esparza

Cecilia Esparza

Apasionada del análisis de datos y entusiasta de Power BI. Con formación en estadística y una curiosidad constante por encontrar formas de construir modelos claros, eficientes y útiles, así como visualizaciones que realmente ayuden a tomar decisiones con datos. Disfruto compartiendo conocimiento y aprendiendo junto a la comunidad técnica.

Apasionada del análisis de datos y entusiasta de Power BI. Con formación en estadística y una curiosidad constante por encontrar formas de construir modelos claros, eficientes y útiles, así como visualizaciones que realmente ayuden a tomar decisiones... Show more

Sreekanth Takkalapalli

Sreekanth Takkalapalli

Cloud Infrastructure Specialist,
Focused on designing and securing scalable cloud solutions across Azure, AWS, and GCP. Expertise in network/cloud security (VMware NSX, SIEM) and virtualization (VMware, Citrix) to drive resilient and efficient IT environments.

Cloud Infrastructure Specialist, Focused on designing and securing scalable cloud solutions across Azure, AWS, and GCP. Expertise in network/cloud security (VMware NSX, SIEM) and virtualization (VMware, Citrix) to drive resilient and efficient IT en... Show more

Vijay Kumar Soni

Vijay Kumar Soni

Vijay Soni is an Expert Architect & Engineer at Discover's business technology department. He architected and designed Discover's cloud native Open banking and Click to Pay ecommerce Digital Wallet Payments platforms. He is seasoned software engineer and passionate about solving complex emerging finance, digital payment, identity and payment product problems using scalable, secure, future-proof and innovative approach. Vijay also led multiple EMVCo, eCommerce, Mobile SE/HCE Payments technology initiatives as lead architect and engineer. Vijay has worked on large industry led financial services & payments technology integration projects including Apple Pay, Google Pay, Samsung Pay, Click to Pay and FDX Open Banking integrations, Pay with Rewards, Contactless Mass Transit acceptance etc.

Vijay Soni is an Expert Architect & Engineer at Discover's business technology department. He architected and designed Discover's cloud native Open banking and Click to Pay ecommerce Digital Wallet Payments platforms. He is seasoned software engineer... Show more

Ignat Korchagin

Ignat Korchagin

Ignat is a systems engineer at Cloudflare working mostly on Linux, platforms and hardware security. Ignat’s interests are cryptography, hacking, and low-level programming. Before Cloudflare, Ignat worked as a senior security engineer for Samsung Electronics’ Mobile Communications Division. His solutions may be found in many older Samsung smart phones and tablets. Ignat started his career as a security researcher in the Ukrainian government’s communications services.

Ignat is a systems engineer at Cloudflare working mostly on Linux, platforms and hardware security. Ignat’s interests are cryptography, hacking, and low-level programming. Before Cloudflare, Ignat worked as a senior security engineer for Samsung Elec... Show more

Shannon C. Ryan

Shannon C. Ryan

Shannon Ryan is a technical strategist and solution architect who operates at the intersection of complex systems, regulated environments, and enterprise growth. She is known for translating fragmented technology, data, and operational landscapes into cohesive, executable modernization strategies that organizations can confidently implement.

A dedicated advocate for women in technology and emerging leaders, Shannon invests in building resilient leadership pipelines alongside the systems she architects.

Shannon Ryan is a technical strategist and solution architect who operates at the intersection of complex systems, regulated environments, and enterprise growth. She is known for translating fragmented technology, data, and operational landscapes int... Show more

Alyssa Nicoll

Alyssa Nicoll

Alyssa is an Senior Developer Advocate for Progress and a Google Developer Expert for Angular. She has spoken at over 50 conferences locally and internationally. She is the host of the Angular Air podcast and emcees ng-conf as well as Monorepo World. She enjoys gaming, scuba diving, and has a little one that fondly goes by "Mr. Milks".

Alyssa is an Senior Developer Advocate for Progress and a Google Developer Expert for Angular. She has spoken at over 50 conferences locally and internationally. She is the host of the Angular Air podcast and emcees ng-conf as well as Monorepo World.... Show more

Sharon Weaver

Sharon Weaver

Sharon is the founder and CEO of Smarter Consulting, a business and technology consulting company. She founded her business to grow and diversify the technology resource pool. She has created a business based on diversity, inclusion, and opportunity.

As a Microsoft RD, MVP, MCT, and Productivity Expert, Sharon's background in Software Development, Business and Systems Analysis, Project Management, and Agile combined with her Developmental Psychology degree and Six Sigma Black Belt blend perfectly with her love of helping and training people to make her a well-rounded leader, consultant, and coach.

Solving both process and technical problems, Sharon has the unique ability to listen and uncover client pain points to develop a plan that will not only build the needed solutions but also drive change, adoption, and education in a way not typically seen from technical consultants.

Being part of the community is extremely important and she is an active leader, participant, and mentor. Sharon speaks professionally globally on subjects such as Microsoft 365, Business Analysis, Leadership, Teamwork, and Women in Technology. She is the founder and lead organizer of the Kansas City M365 User Group, CollabCon, and the Founding President of the Kansas City IIBA chapter.

When she's not working, Sharon watches tv and movies, reads, hangs out with her family, or is traveling somewhere interesting, most likely on a cruise ship out of the country with limited access to communication.

Sharon is the founder and CEO of Smarter Consulting, a business and technology consulting company. She founded her business to grow and diversify the technology resource pool. She has created a business based on diversity, inclusion, and opportunity.... Show more

Markus Kett

Markus Kett

Markus and his teams have been working on Java IDE and database tools, frameworks, as well as on various open-source projects for 20+ years. Markus is the CEO and founder of Cyrock.AI, Inc., which is the company behind the Eclipse open-source projects EclipseStore, Eclipse Serializer, and Eclipse Data Grid, powering Cyrock.AI as the first AI Memory based on a serverless microservices architecture. He is also the editor-in-chief for the free JAVAPRO magazine and the founder and co-organizer of the Java community conference series JCON. He is an independent editor for several magazines, and loves speaking at developer conferences and user groups around the world.

Markus and his teams have been working on Java IDE and database tools, frameworks, as well as on various open-source projects for 20+ years. Markus is the CEO and founder of Cyrock.AI, Inc., which is the company behind the Eclipse open-source project... 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.