Most Active Speakers 2025

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

  • 1123 speakers
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Laila Bougria

Laila Bougria

Laila Bougria is a Solutions Architect and Engineer with over 15 years of experience in the Microsoft .NET space. She's a keynote speaker, a Microsoft MVP in Azure and Developer Technologies, and frequently shares her knowledge and insights at conferences worldwide. Currently, Laila is busy building NServiceBus at Particular Software and solving distributed riddles. When she's not immersed in complex problems or code, Laila enjoys indulging in her favorite pastime - knitting! She finds that tangling the yarn into beautiful patterns helps untangle her thoughts.

Laila Bougria is a Solutions Architect and Engineer with over 15 years of experience in the Microsoft .NET space. She's a keynote speaker, a Microsoft MVP in Azure and Developer Technologies, and frequently shares her knowledge and insights at confer... Show more

Kevin Dubois

Kevin Dubois

Kevin Dubois is often featured as a (keynote) speaker at conferences around the world, where he shares his passion and knowledge about developer experience, open source, cloud native development and Java. He is also an author, java Champion, and an accomplished software architect and platform engineer. Kevin currently works as a Senior Principal Developer Advocate at IBM, and is also Technical Lead for the CNCF Developer Experience Technical Advisory Group.

Kevin contributes to projects like Quarkus, LangChain4j, Knative, Apache Camel, and Podman (Desktop).

Multilingual and multicultural, Kevin speaks English, Dutch, French, and Italian fluently. Currently based in Switzerland, he has also lived in Belgium, Italy, Montana and Utah.
When he’s not coding or speaking at conferences, you’ll likely find Kevin exploring the great outdoors—whether he's hiking rugged trails, gravel biking through scenic routes, snowboarding down epic mountain slopes, or packrafting on untamed waters.

Kevin Dubois is often featured as a (keynote) speaker at conferences around the world, where he shares his passion and knowledge about developer experience, open source, cloud native development and Java. He is also an author, java Champion, and an a... Show more

David Drever

David Drever

David is an Associate Director with Protiviti Canada and a 10-time Microsoft 365 & Security MVP with 25 years of experience working within information technology. For 20 years, David has assisted organizations to collaborate efficiently and effectively within SharePoint and Microsoft 365. David assists companies to understand their compliance needs and how to protect their data. He has helped organizations build data protection programs to safeguard their most sensitive information while ensuring the business can collaborate and work with their content. Over the past 25 years, David has built a great deal of experience in a wide variety of areas in IT, ranging from Desktop\Server support to development in C++ and .NET technologies. He has added value to many clients in several sectors, including utilities, government, banking, and agriculture.

David is a knowledgeable and sought-after international speaker within IT circles and is consulted regularly by companies formulating their digital workplace strategies and compliance platforms.

David blogs at http://daviddrever.com

David is an Associate Director with Protiviti Canada and a 10-time Microsoft 365 & Security MVP with 25 years of experience working within information technology. For 20 years, David has assisted organizations to collaborate efficiently and effective... Show more

Alvaro Costa-Neto

Alvaro Costa-Neto

Alvaro Costa-Neto is a Senior Database Specialist Solutions Architect at AWS who specializes in helping customers implement cloud-based database solutions. With over 20 years of experience in database technologies, he has extensive expertise in both Microsoft SQL Server and various open-source database engines. His role focuses on designing and architecting database solutions for AWS customers.

Alvaro Costa-Neto is a Senior Database Specialist Solutions Architect at AWS who specializes in helping customers implement cloud-based database solutions. With over 20 years of experience in database technologies, he has extensive expertise in both ... Show more

Massimo Crippa

Massimo Crippa

Massimo Crippa is a cloud enthusiast with 20+ years of experience shaping enterprise solutions on Microsoft technologies.

He began his career in the Italian ICT sector as a web developer, before moving into middleware and messaging projects. Since 2011, he has been based in Belgium, where he works as a Lead Architect at Codit.
Massimo’s expertise spans the entire cloud journey from defining strategy and showcasing Azure PaaS and container-based solutions, to delivering hands-on implementations with customers.

Outside of work, he’s a proud dad of two, passionate about motorbikes, and always eager to explore the latest in cloud technology.

Massimo Crippa is a cloud enthusiast with 20+ years of experience shaping enterprise solutions on Microsoft technologies. He began his career in the Italian ICT sector as a web developer, before moving into middleware and messaging projects. Since... Show more

Heini Ilmarinen

Heini Ilmarinen

Heini is a math teacher turned Azure expert. With her background in mathematics and teaching, she has a great passion for problem solving, simplifying complex things and a unique approach to architectures.
She is a Co-founder at Bruvo and a Data Platform MVP, specializing in Azure infrastructure and the data platform. She has been working with customers large and small for the past several years to help them sort out their path to the cloud and make sense of their architecture - both hybrid and cloud. She has worked extensively with both Azure infrastructure and analytics solutions, and makes the most of this skillset in her projects, as well as while speaking. On her free time Heini spends time in the nature, either snowboarding or mountain biking, depending on the season.

Heini is a math teacher turned Azure expert. With her background in mathematics and teaching, she has a great passion for problem solving, simplifying complex things and a unique approach to architectures. She is a Co-founder at Bruvo and a Data Pla... Show more

Alison Cossette

Alison Cossette

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

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

Alan Cox

Alan Cox

Alan Cox is a Microsoft MVP for Copilot & Microsoft 365 and has been in IT for almost 30 years and consulting for 25. His passion is helping organizations achieve more from their Microsoft 365 investments. Alan currently is the Director of Microsoft Governance for Genworth Financial.

Alan Cox is a Microsoft MVP for Copilot & Microsoft 365 and has been in IT for almost 30 years and consulting for 25. His passion is helping organizations achieve more from their Microsoft 365 investments. Alan currently is the Director of Microsoft ... Show more

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

Sami Laiho

Sami Laiho

Sami Laiho is one of the world's leading professionals in the Windows OS and Security. Sami has been working with and teaching OS troubleshooting, management, and security since 1995. Sami's session was evaluated as the best session in TechEd North America, Europe and Australia in 2014, and Nordic Infrastructure Conference in 2016, 2017, 2019, 2020, 2022, 2023, 2024 and 2025 (Keynote for NIC).

At Ignite 2018 Sami's sessions were ranked as #1 and #2 out of 1708 sessions!! This was the first time in the history of the conference that anyone has been able to do this!

Sami is also an author at PluralSight and the conference chair for the TechMentor and "Cyber Security and Ransomware Live!" conferences.

More info at: https://samilaiho.com/

Sami Laiho is one of the world's leading professionals in the Windows OS and Security. Sami has been working with and teaching OS troubleshooting, management, and security since 1995. Sami's session was evaluated as the best session in TechEd North A... Show more

Daniel Laskewitz

Daniel Laskewitz

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

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

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

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

Markus Ehrenmueller-Jensen

Markus Ehrenmueller-Jensen

​Markus Ehrenmueller-Jensen is the founder of Savory Data, with a career spanning project leadership, data engineering, and business intelligence architecture since 1994. He holds degrees in software engineering and business education and serves as a professor of databases and project engineering at HTL Leonding, a technical college. He is also certified in PL-300 (Power BI Data Analyst), DP-203 (Azure Data Engineer Associate Certification), DP-600 (Fabric Analytics Engineer Associate), and DP-700 (Fabric Data Engineer Associate).

Markus actively contributes to the global data community, speaking regularly at international conferences such as SQL Bits in London, Power BI Next Step in Copenhagen, Data Saturdays throughout Europe, and SQL Days. He co-founded SQL PASS Austria in 2013 and the Power Platform User Group Austria in 2016; both organizations merged in 2021 to form Data Community Austria. Since 2014, he has organized Data Community Austria Day in Vienna, fostering knowledge sharing among data professionals. In recognition of his technical leadership and community involvement, Markus has been honored as a Microsoft Data Platform Most Valuable Professional (MVP) since 2017.​

In addition to his speaking engagements, Markus contributes articles to reputable journals and has authored the book "Data Modeling with Microsoft Power BI," published in June 2024.

​Markus Ehrenmueller-Jensen is the founder of Savory Data, with a career spanning project leadership, data engineering, and business intelligence architecture since 1994. He holds degrees in software engineering and business education and serves as a... Show more

Julian Kusenberg

Julian Kusenberg

Julian Kusenberg is a Microsoft MVP and Senior Consultant at SoftwareOne AG and an expert in Microsoft 365 compliance, with a particular focus on Microsoft Purview. In his role, he supports organizations in implementing holistic security and governance strategies – from deploying sensitivity labels to Insider Risk Management, Data Loss Prevention, and eDiscovery.

With an academic background in physics from Heinrich Heine University Düsseldorf, Julian combines analytical thinking with deep technical expertise. Previously, he worked at FTI Consulting, where he played a leading role in international Microsoft 365 compliance projects for clients across industries such as manufacturing, the public sector, healthcare, and non-profit organizations.

His focus lies in the practical implementation of compliance frameworks within Microsoft environments, the development of information protection strategies, and the intelligent use of automation and governance features. Julian is a regular speaker at conferences, known for presenting complex technical topics in a clear, structured, and practical manner.

Julian Kusenberg is a Microsoft MVP and Senior Consultant at SoftwareOne AG and an expert in Microsoft 365 compliance, with a particular focus on Microsoft Purview. In his role, he supports organizations in implementing holistic security and governan... Show more

Paula García Esteban

Paula García Esteban

💫🙆🏻‍♀️ Founder @ Stratadom
🎨📊 Data visualization and AI training
🧑‍🏫🤖 IA/ML Instructor @ LinkedIn Learning
🏅💻 Microsoft MVP Data Platform & AI Platform

I trust the power of data and persuasive communication.

Data visualization services: www.uxforpowerbi.com
More info: www.stratadom.com

💫🙆🏻‍♀️ Founder @ Stratadom 🎨📊 Data visualization and AI training 🧑‍🏫🤖 IA/ML Instructor @ LinkedIn Learning 🏅💻 Microsoft MVP Data Platform & AI Platform I trust the power of data and persuasive communication. Data visualization ser... Show more

Vadym Pinchuk

Vadym Pinchuk

Vadym is a Software Development Engineer and Google Developer Expert (GDE) in Flutter & Dart, driven by a dual passion: engineering world-class mobile solutions and elevating the developers around him. His deep expertise and active contributions to the tech ecosystem were formally recognized by Google with the GDE award in 2025.

With a rich background spanning over 8 years in native Android and more than 4 years in cross-platform development with Flutter, Vadym has a proven track record of building high-quality applications. He has partnered with industry giants such as Samsung, Volvo, Instagram, and Sky, as well as numerous dynamic startups, to deliver cutting-edge mobile solutions across a diverse range of sectors.

A true believer in the power of sharing knowledge, Vadym is a powerhouse in the community and a familiar face on the international conference circuit. He is known for bringing vibrant energy to the stage at major events including Droidcon, Fluttercon, FlutterHeroes, and Appdevcon. But his commitment doesn't stop at the podium; he also actively supports events as an MC and stage manager, dedicating his energy to ensuring a smooth and engaging experience for speakers and attendees alike.

At his core, Vadym is on a mission to empower the tech community. He is deeply passionate about developer education and channels this into dedicated mentoring, fostering growth, and helping to build the next generation of tech leaders.

Vadym is a Software Development Engineer and Google Developer Expert (GDE) in Flutter & Dart, driven by a dual passion: engineering world-class mobile solutions and elevating the developers around him. His deep expertise and active contributions to t... Show more

Hannes Lowette

Hannes Lowette

Hannes is a developer, a coach and a father of 3.

In software development, he has always had a passion for performance, databases, distributed systems and large scale applications. He's always weighing every solution's benefits against its drawbacks, reducing friction where possible.

As a coach, he is enthusiastic about knowledge sharing, personal growth and building careers. Building a company culture around learning is what gets him out of bed.

In his free time, when he’s not building LEGO® castles with his kids, he likes to spend time building guitars, playing chess, mountain biking and doing all round geeky stuff.

You can often find him on stage at the conference afterparty, especially as the guitarist of Dylan Beattie & the Linebreakers.

Hannes is a developer, a coach and a father of 3. In software development, he has always had a passion for performance, databases, distributed systems and large scale applications. He's always weighing every solution's benefits against its drawbac... Show more

Simon Painter

Simon Painter

I've been working as a .NET developer for over 16 years now in a variety of industries including government, retail and manufacturing. But I've been hacking around with computer code since I was old enough to read my Dad's copy of the ZX Spectrum BASIC coders manual.

I've been speaking about Functional C# at various user groups and conferences around the UK, USA, Europe and Australia and am particularly interested in seeing just how far we can push C# without breaking it.

In 2023 I released my first technical book: "Functional Programming with C#", published by O'Reilly Media.

When I'm not coding, or running after my two small children, I have been known to enjoy the classic series of Doctor Who, Fighting Fantasy Gamebooks, Cryptic Crosswords, and rather more coffee than is probably good for me.

I've been working as a .NET developer for over 16 years now in a variety of industries including government, retail and manufacturing. But I've been hacking around with computer code since I was old enough to read my Dad's copy of the ZX Spectrum BAS... Show more

Roberth Strand

Roberth Strand

Roberth is a self-proclaimed "cloud automator" and "platform creator". He primarily works on building cloud native platforms, while being an advocate for Platform Engineering and DevOps. He has been awarded the title Microsoft Azure MVP and CNCF Ambassador, and previously HashiCorp Ambassador. As an active speaker for several years, he has been on stage everywhere from small local meetups to KubeCon.

Furthermore, he initiated Cloud Native Norway, which hosts events and supports the cloud native community in Norway. Additionally, he is active in the Cloud Native Computing Foundation as maintainer of the OpenGitOps project, previously a co-chair of TAG App Delivery, and founded and lead the Platforms Working Group for several years.

Roberth is a self-proclaimed "cloud automator" and "platform creator". He primarily works on building cloud native platforms, while being an advocate for Platform Engineering and DevOps. He has been awarded the title Microsoft Azure MVP and CNCF Amba... Show more

Steve Campbell

Steve Campbell

Steve co-owns Analytic Endeavors, a boutique data consultancy helping organizations build Master Data - centralized data that is trusted, validated, and AI-ready. We design and deliver well-architected data platforms with strong data foundations, embedded data quality, and master data management, supported by our proprietary Nexus platform.

I’m also the founder of Sunny BI, where we run Build Camps, a delivery-led model with a unique blend of training and consulting, where your team learns by doing. They build a real solution to a real business problems, using your own data and platforms, and leave with a working POC and the skills to take it forward.

Outside of this, I’m a Microsoft MVP and an active community contributor. I speak globally at major data and Microsoft conferences and share practical Power BI guidance through my website and social channels

Steve co-owns Analytic Endeavors, a boutique data consultancy helping organizations build Master Data - centralized data that is trusted, validated, and AI-ready. We design and deliver well-architected data platforms with strong data foundations, emb... Show more

Hafedh Messaoudi

Hafedh Messaoudi

Hafedh is a professional coach, agile coach, and trainer with over 12 years of experience in guiding individuals and organizations toward resilience, adaptability, and improved performance. With a strong foundation in neuroscience, agility, and human sciences, Hafedh integrates these disciplines to offer a comprehensive approach to personal and organizational development. His work focuses on helping teams and leaders navigate change and foster growth in dynamic environments. Throughout his career, Hafedh has been committed to empowering his clients with practical, science-based strategies for achieving long-term success.

Hafedh is a professional coach, agile coach, and trainer with over 12 years of experience in guiding individuals and organizations toward resilience, adaptability, and improved performance. With a strong foundation in neuroscience, agility, and human... Show more

Cecilia Brusatori

Cecilia Brusatori

Empowering Organizations through Data, Analytics & AI

Tech Leader | Entrepreneur | Public Speaker | Technical Trainer | Consultant | Founder of Magna Data inc,
Microsoft Certified Professional in SQL Server, Azure, Fabric, Power BI & Excel. MCSA BI Reporting. MCP Data Scientist & Data Analyst, MCP Fabric. Microsoft Certified Trainer (MCT). AWS Cloud, Snowflake DW, Databricks Fundamentals Certs.

Empowering Organizations through Data, Analytics & AI Tech Leader | Entrepreneur | Public Speaker | Technical Trainer | Consultant | Founder of Magna Data inc, Microsoft Certified Professional in SQL Server, Azure, Fabric, Power BI & Excel. MCSA ... Show more

Lian Li

Lian Li

Lian always wanted to save the world. After leaving law school, she decided to work with computers instead.
While in Web Dev, she started attending tech events, and soon fell in love with the community. In her roles as Consultant and DevRel, Lian combined technical knowledge with a focus on the human side.
Currently, Lian works as freelance Platform Engineer in Amsterdam and is the Chief Karaoke Officer for Kuberoke, the first and only Kubernetes Karaoke Community. She also enjoys performing in musical improvisation theatre and standup comedy shows.

Lian always wanted to save the world. After leaving law school, she decided to work with computers instead. While in Web Dev, she started attending tech events, and soon fell in love with the community. In her roles as Consultant and DevRel, Lian c... Show more

Thomas Künneth

Thomas Künneth

Thomas fell in love with Android in 2009. He has been constantly contributing to the community since then. Thomas loves writing books (four titles, 15 editions) and articles. He enjoys speaking at conferences and meetups. Thomas' first encounter with programming was in the era of home computers during the early 1980s. Later came C, Perl and a few more. During the 90s he wrote a bunch of programs for the Atari ST series. The first decade of Thomas' professional career centered around Java Enterprise. Today it’s all things Android and Kotlin.

Thomas fell in love with Android in 2009. He has been constantly contributing to the community since then. Thomas loves writing books (four titles, 15 editions) and articles. He enjoys speaking at conferences and meetups. Thomas' first encounter with... Show more

Luca Di Vita

Luca Di Vita

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

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

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

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

David Whitney

David Whitney

David is the Director of Architecture for NewDay, and the founder of Electric Head Software. Focusing on iterative software delivery, developer mentoring and cultural change - mostly working with London-based organisations.

He speaks about software design, culture, and ethics in technology - rounded out by an assortment of talks about software that probably doesn't need to exist but makes the world a little more fun. David has previously served as the chief coding technical architect for JustGiving and helped market-leading organisations including JUST-EAT, Trainline and Vodafone improve their technical capabilities.

David is a Microsoft MVP, has been part of the OpenUK Honours list for open-source advocacy, and is a twice bestselling author of children's books about programming.

You can find his open-source projects on NuGet, npm and GitHub, follow him on Twitter @david_whitney, or check out his technical blog at http://www.davidwhitney.co.uk/Blog.

http://www.electricheadsoftware.com
http://www.davidwhitney.co.uk

David is the Director of Architecture for NewDay, and the founder of Electric Head Software. Focusing on iterative software delivery, developer mentoring and cultural change - mostly working with London-based organisations. He speaks about softwar... Show more

Jens Vestergaard

Jens Vestergaard

Jens is Head of Product, CatMan at Redslim, driving the BI as a Service team as well as custom build & deliver projects.
The tech stack is wide, as Jens has a couple of decades in the industry, focusing on mainly Business Intelligence tools, but is also keen on Powershell, C#, Azure and Microsoft Fabric in general.
Jens is 9 years in a row Microsoft Data Platform MVP and a frequent speaker at both local and international events.

Jens is Head of Product, CatMan at Redslim, driving the BI as a Service team as well as custom build & deliver projects. The tech stack is wide, as Jens has a couple of decades in the industry, focusing on mainly Business Intelligence tools, but is ... Show more

Adriana Villela

Adriana Villela

Adriana Villela is a blogger, host of the Geeking Out podcast, CNCF Ambassador, and maintainer of the OpenTelemetry End User SIG. By day, she focuses on Observability and OpenTelemetry, as a Principal Developer Advocate at Dynatrace. By night, she climbs walls. She also loves capybaras, because they make her happy.

In past lives, Adriana managed both a Platform Engineering team and Observability Practices team at Tucows. She has also worked at various large-scale enterprises as both an individual contributor and leader, including Bank of Montreal, Ceridian, and Accenture.

Adriana Villela is a blogger, host of the Geeking Out podcast, CNCF Ambassador, and maintainer of the OpenTelemetry End User SIG. By day, she focuses on Observability and OpenTelemetry, as a Principal Developer Advocate at Dynatrace. By night, she cl... Show more

Jimmy Engström

Jimmy Engström

Jimmy Engström has been developing ever since he was 7 years old and got his first computer.
He loves to be on the cutting edge of technology, trying new things.
When he got wind of Blazor, he immediately realized its potential and adopted it when it was in beta. He has been running Blazor in production since it was launched by Microsoft.
He is the author of "Web Development with Blazor" and the co-host of Coding After Work (podcast and stream).
His passion for the .NET industry and community has taken him around the world, speaking about development. Microsoft has recognized this passion by awarding him the
Microsoft Most Valuable Professional award 11 years in a row.
He occasionally blogs at engstromjimmy.com.

codingafterwork.com

Jimmy Engström has been developing ever since he was 7 years old and got his first computer. He loves to be on the cutting edge of technology, trying new things. When he got wind of Blazor, he immediately realized its potential and adopted it when... Show more

Daniel Hutmacher

Daniel Hutmacher

SQL Server developer for 25-odd years, Microsoft Data Platform MVP, Redgate Community Ambassador, organizer of Data Saturday Stockholm and Stockholm SQL, volunteer/co-organizer of GroupBy.org. I still occasionally blog at sqlsunday.com.

SQL Server developer for 25-odd years, Microsoft Data Platform MVP, Redgate Community Ambassador, organizer of Data Saturday Stockholm and Stockholm SQL, volunteer/co-organizer of GroupBy.org. I still occasionally blog at sqlsunday.com. Show more

Brayan Kai Mwanyumba

Brayan Kai Mwanyumba

Brayan Kai is a Data Scientist passionate about Technical Writing and Open-source Advocacy, currently working as a Data Scientist. At work, he helps build Data Science solutions, facilitates technical mentorship sessions, and builds next-level data content to equip learners with hands-on, job-ready, in-demand skills for their next career move. He also volunteers at different developer communities, including Google Developer Group Nairobi, OSCA Nairobi, and the GitHub Community. Brayan is also a global tech speaker so far having spoken at over 30 conferences across Africa, Europe, North America, and Asia. It makes him happier and more balanced, and gives him a stronger sense of purpose to innovate, share, and teach in and with the community rather than just for it.

Brayan Kai is a Data Scientist passionate about Technical Writing and Open-source Advocacy, currently working as a Data Scientist. At work, he helps build Data Science solutions, facilitates technical mentorship sessions, and builds next-level data c... 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.