Most Active Speakers 2025

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

  • 1126 speakers
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Emily Mancini

Emily Mancini

Emily is a lifelong learner and passionate advocate for seamless user experiences- specializing in information architecture and user interface design (UX master certified by Nielsen Norman Group). She thrives on building accessible structures to help people find what they are looking for and better understand their surroundings. Emily is a recipient of the Microsoft Most Valuable Professional award for 5 consecutive years and a member of the Microsoft 365 Patterns and Practices team.

A results-driven professional, Emily is recognized for her expertise in implementing Microsoft 365 solutions. She consistently delivers projects on time and within budget, with a particular focus on enhancing user satisfaction and usability. Emily aligns projects seamlessly with company culture and overarching goals leading to higher adoption. Emily has developed scalable environments for companies experiencing 10x growth in less than 5 years, managed migrations due to large-scale mergers and acquisitions, and specializes in initial implementations with hesitant new users. She possesses a deep understanding of what business owners need to implement intuitive and scalable solutions.

Emily’s experience as a communications manager, leadership development facilitator, and teacher provides a well-rounded background for interpreting and translating user needs across industries. She embeds effective training programs and compassionate change management strategies in every project, ensuring that all users are actively engaged in the journey. Emily believes a human-centered process will yield the best results.

Emily is a lifelong learner and passionate advocate for seamless user experiences- specializing in information architecture and user interface design (UX master certified by Nielsen Norman Group). She thrives on building accessible structures to help... Show more

Matteo Bianchi

Matteo Bianchi

Matteo is a Solutions Engineer at GitHub, CNCF Ambassador and Cloud Native aficionado, a former startup CTO and DevRel. Open Source contributor, part of the Kubernetes Release Team since v1.31 and until v1.34, serving in Release Engineering since v1.33.

Hacker, builder and problem solver by nature. Singing in a metal band whenever there's nothing left to fix in the cloud. @mbianchidev on (almost) every social media.

Matteo is a Solutions Engineer at GitHub, CNCF Ambassador and Cloud Native aficionado, a former startup CTO and DevRel. Open Source contributor, part of the Kubernetes Release Team since v1.31 and until v1.34, serving in Release Engineering since v1.... Show more

Alvin Ashcraft

Alvin Ashcraft

Alvin Ashcraft is a veteran developer, author, and community leader with over three decades of industry experience. As a Senior Content Developer at Microsoft, he helps developers build the next generation of intelligent apps using Microsoft Foundry. Previously, he managed the documentation for WinUI, the Windows App SDK, and Windows SDK.

Alvin is a dedicated community builder, serving as a founding organizer, Treasurer, and acting VP for the TechBash conference. He has authored definitive guides for developers, including Learn WinUI 3 and Parallel Programming and Concurrency with C# and .NET.

Alvin Ashcraft is a veteran developer, author, and community leader with over three decades of industry experience. As a Senior Content Developer at Microsoft, he helps developers build the next generation of intelligent apps using Microsoft Foundry.... Show more

Artem Chernevskiy

Artem Chernevskiy

Artem Chernevskiy is the founder of AICA and a Microsoft Azure Foundry MVP who helps B2B AI startups become enterprise-ready on Azure. A former Microsoft professional with more than 20 years of experience in enterprise AI, cloud platforms, and product delivery, he has contributed to the Microsoft Cloud Adoption Framework and other Microsoft best practices.

He is also an ICF-trained coach, which influences his practical, people-first approach to teaching and mentoring. Artem regularly speaks about building secure, scalable, production-grade AI solutions that deliver real business value.

Artem Chernevskiy is the founder of AICA and a Microsoft Azure Foundry MVP who helps B2B AI startups become enterprise-ready on Azure. A former Microsoft professional with more than 20 years of experience in enterprise AI, cloud platforms, and produc... Show more

Dhyan Rathore

Dhyan Rathore

Hi, I’m Dhyan. I love all things data, but more importantly, I love making it work for people. Currently serving as an Enablement Lead at a Fortune 500 company, I spend my days navigating the complexities of data at scale.

I help people unlock the magic of Power BI and Fabric by simplifying the tricky stuff and automating the boring parts. My sessions aren't just about theory; I share rigorously tested lessons, tricks, and strategies pulled directly from the field.

I’m a firm believer that data should be a source of inspiration rather than stress. My goal is to deliver practical, engaging, and fun sessions that empower teams to build sustainable solutions with a lasting impact.

Hi, I’m Dhyan. I love all things data, but more importantly, I love making it work for people. Currently serving as an Enablement Lead at a Fortune 500 company, I spend my days navigating the complexities of data at scale. I help people unlock the... 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

Anton Babenko

Anton Babenko

Anton is an AWS Community Hero and helps companies around the globe build solutions using AWS, specializing in infrastructure-as-code, DevOps, and reusable infrastructure components.

He spends much of his time as an open-source contributor on various Terraform and AWS projects: Terraform AWS modules (downloaded more than 2 billion times), the Terraform best practices ebook (www.terraform-best-practices.com), serverless with Terraform (serverless.tf), Terraform Weekly (weekly.tf), and Your Weekly Dose of Terraform (http://bit.ly/terraform-youtube). He runs compliance.tf, which delivers compliance-ready Terraform AWS modules, and maintains terraform-skill (1.8K stars on GitHub), an open agent skill for writing and reviewing Terraform safely.

Anton is an AWS Community Hero and helps companies around the globe build solutions using AWS, specializing in infrastructure-as-code, DevOps, and reusable infrastructure components. He spends much of his time as an open-source contributor on vari... Show more

Aman Sardana

Aman Sardana

Aman Sardana is a technology professional in the financial services and payments domain. He is a hands-on technology leader, enabling business capabilities by implementing cutting-edge, modernized technology solutions. He is skilled in designing, developing, and implementing innovative financial technology solutions that drive business results and establish best-in-class operations.

Aman did his Masters in Information Technology from Northwestern University. This unique program straddles between the business and technical side of information technology, focusing on data mining, information security, enterprise architecture, statistics, innovation, marketing and finance.

Aman Sardana is a technology professional in the financial services and payments domain. He is a hands-on technology leader, enabling business capabilities by implementing cutting-edge, modernized technology solutions. He is skilled in designing, dev... 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

Patricia Rodríguez Vaquero

Patricia Rodríguez Vaquero

🚀 Welcome to my profile!

I'm Patricia Rodríguez Vaquero 😊, a certified Azure Data Engineer 💻☁️. With 5 years of experience in Microsoft Azure services (Microsoft Fabric, Azure Synapse Analytics, ADF, Azure Databricks, Python, T-SQL, Spark, etc), I bring passion, dedication, and a drive to master Microsoft technologies.

Beyond work, I consider myself honest, perseverant, curious, and a committed lifelong learner💡.
I’m an animal and nature lover 🐾🌿, an avid traveler ✈️, and an active participant in community events 🤝.

💬 Hablo español
💬 I speak English
💬 Parlo italiano

✨ ATTITUDE IS THE KEY TO SUCCESS! ✨

📩 Want to connect? Reach me at: pati.rvaquero@gmail.com

🚀 Welcome to my profile! I'm Patricia Rodríguez Vaquero 😊, a certified Azure Data Engineer 💻☁️. With 5 years of experience in Microsoft Azure services (Microsoft Fabric, Azure Synapse Analytics, ADF, Azure Databricks, Python, T-SQL, Spark, etc... Show more

Eddie Knight

Eddie Knight

Eddie Knight is a Software and Cloud Engineer with a background in banking technology. When he isn’t playing with his 3-year-old son, he combines his passion and job duties by working to improve the security of open source software.

Eddie currently helps lead several security and compliance initiatives across the CNCF, OpenSSF, and FINOS.

Eddie Knight is a Software and Cloud Engineer with a background in banking technology. When he isn’t playing with his 3-year-old son, he combines his passion and job duties by working to improve the security of open source software. Eddie current... Show more

Padmini Soni

Padmini Soni

Padmini Soni is a Senior AI Strategist, Microsoft MVP in AI, TEDx Speaker, Author, and Founder of Rezonance AI, where she helps organizations move beyond AI experimentation toward responsible, practical adoption tied to real business outcomes. With more than 25 years of experience in technology and leadership across Fortune 500 companies, she brings together business strategy, human-centered design, AI governance, and emerging technologies to help organizations navigate AI with clarity and confidence. She also serves as Chief AI Strategist at the AI Leadership Institute and as a Responsible AI mentor with ACM.org.

Known for making complex AI concepts accessible and actionable, Padmini works with executives, leaders, and professionals through keynotes, workshops, executive sessions, and hands-on training. Her work helps people move from AI-curious to AI-confident while keeping responsibility, inclusion, and human impact at the center of innovation.

Padmini is the co-founder of Asian Women Advancing AI, a global community dedicated to increasing the visibility, participation, and leadership of Asian women in the AI ecosystem. She is also co-author of Creating Custom GPTs with OpenAI GPT Builder, holds AWS and Google certifications, and is PMP certified and a Certified Scrum Product Owner (CSPO).

Padmini Soni is a Senior AI Strategist, Microsoft MVP in AI, TEDx Speaker, Author, and Founder of Rezonance AI, where she helps organizations move beyond AI experimentation toward responsible, practical adoption tied to real business outcomes. With m... Show more

Dave Rendon

Dave Rendon

📘 https://amzn.to/3ummI9B
🌐 https://blog.azinsider.net
💻 https://github.azinsider.net

▬▬▬▬▬▬ Hello There! 👋 ▬▬▬▬▬▬
Let's connect - https://www.linkedin.com/in/daverndn/

I'm David Rendon (Dave Rendon), a Microsoft Azure and AI MVP for 13 consecutive years and a Microsoft Certified Trainer. As an IT professional with more than 15 years of experience, I have focused strongly on Microsoft technologies and Azure since 2010.

📘 https://amzn.to/3ummI9B 🌐 https://blog.azinsider.net 💻 https://github.azinsider.net ▬▬▬▬▬▬ Hello There! 👋 ▬▬▬▬▬▬ Let's connect - https://www.linkedin.com/in/daverndn/ I'm David Rendon (Dave Rendon), a Microsoft Azure and AI MVP for... Show more

Satish Upadhyaya

Satish Upadhyaya

I am a Chief Level Microsoft 365 Architect and recognized Microsoft MVP for Teams and Microsoft 365 Copilot, bringing 12+ years of leadership in architecting, securing, and deploying complex Microsoft 365 solutions for Federal, State, and Local Government agencies and large Enterprise Customers. My core mandate is solving technically intricate Microsoft requirements involving compliance and cross-platform integration.

My expertise spans the entire solution lifecycle, from rigorous presales TCO analysis and high-assurance security design to global deployment and measurable user adoption. I specialize in environments requiring stringent security and compliance postures (e.g., GCC, GCC High, DoD requirements).

Core Technical & Domain Leadership:
• Advanced UC Architecture: Expertise in solving complex PSTN requirements globally, utilizing Operator Connect, Direct Routing (SBC/SIP trunk configuration, media bypass), and migration strategies from legacy voice platforms. I specialize in integrating Zoom and Cisco Experience (CUCM, Webex) environments with Teams via CVI and interop gateways.
• AI and Custom Development: Leading the technical implementation of Generative AI productivity tools. This includes leveraging Copilot Studio for low-code/no-code custom bot creation, sophisticated data connection configuration, and architecting the secure deployment of Copilot Chat across restricted tenants.
• Compliance & Telecom Expertise: Deep-dive technical knowledge of global telecom regulations, including E.164 normalization, emergency calling (E911/NextGen 911), and Lawful Intercept requirements. This expertise ensures technical compliance and de-risks deployment across diverse regulatory jurisdictions for both government and enterprise clients.
• M365 Security & Governance: Architecting security and compliance baselines using Purview, Entra ID (conditional access, MFA), and Defender to meet specific governmental and highly regulated industry standards while maintaining user productivity.

I serve as a high-impact technical leader, driving innovation, securing mission-critical communications, and translating complex architectural diagrams into successful, compliant business outcomes for the world's most demanding organizations.

I am a Chief Level Microsoft 365 Architect and recognized Microsoft MVP for Teams and Microsoft 365 Copilot, bringing 12+ years of leadership in architecting, securing, and deploying complex Microsoft 365 solutions for Federal, State, and Local Gover... Show more

Leonardo Cavagnis

Leonardo Cavagnis

Since 2023, I have been working as a firmware engineer at Arduino, contributing to the development of innovative hardware and software solutions.
I hold a Master's Degree in Computer Engineering from Politecnico di Milano, specializing in embedded systems. Before joining Arduino, I gained experience in various fields, including industrial, automotive, and green mobility.
Passionate about technical writing and traveling, I am always seeking new experiences and knowledge.

Since 2023, I have been working as a firmware engineer at Arduino, contributing to the development of innovative hardware and software solutions. I hold a Master's Degree in Computer Engineering from Politecnico di Milano, specializing in embedded s... 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

Tanja Wiehoff

Tanja Wiehoff

I love to bring enthusiasm to my speaches and trainings.
I want people to have fun with the M365 tools and I want them to experience how easy it is to create awesome solutions in only minutes.

I love to bring enthusiasm to my speaches and trainings. I want people to have fun with the M365 tools and I want them to experience how easy it is to create awesome solutions in only minutes. Show more

Kajetan Duszyński

Kajetan Duszyński

Senior Developer/Team Leader at JIT Team with over 10 years of commercial experience. A passionate enthusiast for new technologies. Vlogger, blogger, YouTuber, and a person who feels best within the developer community. For more than 3 years, he has been helping people transition into the IT industry.

Senior Developer/Team Leader at JIT Team with over 10 years of commercial experience. A passionate enthusiast for new technologies. Vlogger, blogger, YouTuber, and a person who feels best within the developer community. For more than 3 years, he has ... Show more

Julien Topçu

Julien Topçu

Julien is a hands-on CTO with 15 years of experience, specializing in Domain-Driven Design (#DDD). His expertise lies in helping organizations build systems that deliver high business value. Julien focuses on aligning organizational structure, architecture and software practices with business objectives. As a member of the OWASP foundation, he actively promotes application security best practices. An international speaker, Julien enjoys sharing his knowledge with others.

Julien is a hands-on CTO with 15 years of experience, specializing in Domain-Driven Design (#DDD). His expertise lies in helping organizations build systems that deliver high business value. Julien focuses on aligning organizational structure, archit... Show more

Dr. Neda Maria Kaizumi

Dr. Neda Maria Kaizumi

Dr. Neda Maria Kaizumi is a distinguished technology expert at the intersection of AI development, global compliance, and international regulations. With a doctorate in Organizational Behaviour. She combines a rich academic foundation with practical insights. She has further honed her expertise through the Business Analytics and Data Science executive program at Harvard Business School.

Dr. Kaizumi is ISO standards committee member, and she shapes AI governance and compliance frameworks, advocating ethical AI aligned with global standards like the EU AI Act and beyond.

An accomplished author, public speaker, and advocate for ethical AI development, Dr. Kaizumi integrates her technical acumen and business expertise to empower organizations navigating the complex global landscape of AI governance. With a deep understanding of regulatory frameworks and their impact on technology, Dr. Kaizumi is a leading voice in fostering innovation that aligns with compliance and sustainability.

Dr. Neda Maria Kaizumi is a distinguished technology expert at the intersection of AI development, global compliance, and international regulations. With a doctorate in Organizational Behaviour. She combines a rich academic foundation with practical ... Show more

Emanuele Bartolesi

Emanuele Bartolesi

I'm a GitHub Technical Lead, and I'm passionate about front-end technologies and everything related to the cloud, especially Microsoft Azure.
I live in Zurich and actively participate in local and international community activities and events.

I share my love for technology through my blog https://www.emanuelebartolesi.com.
I also became a Twitch Affiliate as a live coder, and you can follow me at https://twitch.tv/kasuken to write some code together.

Microsoft MVP (12x)
GitHub Star ⭐ (4x)
GitHub Star of the Year 2023

I'm a GitHub Technical Lead, and I'm passionate about front-end technologies and everything related to the cloud, especially Microsoft Azure. I live in Zurich and actively participate in local and international community activities and events. I ... 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

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

Mark Tinderholt

Mark Tinderholt

Mark is an experienced technologist whose journey began in application development, spanning web and client-server applications to sophisticated distributed systems and microservices. Along this path, he developed deep expertise in automation and DevOps, leading diverse project teams and guiding cloud practice organizations through strategic, operational, and pre-sales leadership roles. Currently, Mark holds a hands-on engineering position at Microsoft, contributing directly to the Microsoft Azure platform.

Beyond his professional work, Mark shares his passion for cloud computing through his YouTube channel, "The Azure Terraformer." He is also the author of "Mastering Terraform," a practical, multi-cloud guide to Infrastructure-as-Code covering AWS, Azure, and Google Cloud, and has created the Udemy course "Terraform 101."

Mark is an experienced technologist whose journey began in application development, spanning web and client-server applications to sophisticated distributed systems and microservices. Along this path, he developed deep expertise in automation and Dev... Show more

Devang Shah

Devang Shah

Devang Shah is a Principal Program Manager in the Microsoft Fabric engineering team, where he leads global product and execution for Fabric Real‑Time Intelligence and Fabric IQ. He runs a globally distributed team of program managers and is responsible for driving the end‑to‑end evolution of the real‑time intelligence product suite—from early concepts and product incubation to global adoption and operational scale.

Devang has been deeply involved in shaping and maturing Fabric’s real‑time intelligence stack, including Fabric IQ as the ontology and semantic layer that transforms high‑velocity events into business‑ready, decision‑grade intelligence and powers agent‑driven systems.

A highly hands‑on, technical program manager, Devang builds his own solutions and works directly in the nitty‑gritty of event‑driven streaming architectures, low‑latency pipelines, and real‑time analytics systems. With over a decade of experience designing large‑scale data platforms, he approaches product development as a system—connecting architecture, semantics, agents, and global operations.

Devang Shah is a Principal Program Manager in the Microsoft Fabric engineering team, where he leads global product and execution for Fabric Real‑Time Intelligence and Fabric IQ. He runs a globally distributed team of program managers and is responsib... Show more

Beatriz López

Beatriz López

Apasionada de la tecnología, me renové profesionalmente y descubrí todo lo que me ofrecía, no he parado de aprender y disfruto el poder compartir, yo también fui esa persona buscando tutoriales y conocimiento y ahora toca poner mi granito de arena.

Apasionada de la tecnología, me renové profesionalmente y descubrí todo lo que me ofrecía, no he parado de aprender y disfruto el poder compartir, yo también fui esa persona buscando tutoriales y conocimiento y ahora toca poner mi granito de arena. Show more

Ondro Mihályi

Ondro Mihályi

Ondro is a software developer and consultant specializing in combining standard and proven tools to solve new and challenging problems. He's been developing in Java for over 10 years. He’s worked for clients like Payara, LottoLand, Uniqa and others.

He has co-founded OmniFish, which provides enterprise support for Eclipse GlassFish and expert Jakarta EE services. He’s passionate about helping his clients and the wider Java community with their projects based on Jakarta EE and similar technologies.

As an experienced Java developer and instructor, he's helped companies build and educate their development teams and improve their development processes.
He's a core member of several opensource projects and Jakarta EE specification projects. He’s a frequent conference speaker, leader of the Czech JUG, and a Java Champion.

Ondro is a software developer and consultant specializing in combining standard and proven tools to solve new and challenging problems. He's been developing in Java for over 10 years. He’s worked for clients like Payara, LottoLand, Uniqa and others. ... 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

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

Toni Ferrà Arbós

Toni Ferrà Arbós

Desarrollador que paso al mundo del dato, por eso intento aprovechar mi experiencia en desarrollo para automatizar procesos

Desarrollador que paso al mundo del dato, por eso intento aprovechar mi experiencia en desarrollo para automatizar procesos Show more

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.