group speakers.title

Quality freak, clean code preacher, TDD enthusiast, pair-programming practitioner. In love with Java since the start of my career, excited about devops in the last few years. Developing highly-available core systems at Rabobank.

Adele is a Software Engineer and Consultant at Trifork Amsterdam where she is working on systems for the educational sector. Most of her work day is spent in the JVM/Spring and React ecosystems, although increasingly she plays a pivotal role as trusted advisor to Trifork’s customers.Adele is an experienced international speaker, having spoken at multiple editions of NDC, goto, Devoxx and JavaZone. As a speaker, she uses her exposure to real-world customer projects, experiences outside of tech and passion for story-telling to distill complex ideas into their essential parts. All with an air of good humour.When she’s not at her computer or on stage, you can find her in the gym pumping some serious iron as she pursues the sport of powerlifting.

Aicha Laafia, a Java software engineer with a love for coding, an interest in sustainability, and a commitment to empowering women in tech.I am a WomenTech Makers and GirlCodedev ambassador, and a member of the TheMoroccanACS Association of Computing Science.Recently I joined JetBrains Community Contributor program.I focus on creating software with minimal environmental impact while mentoring and supporting women in technology. I enjoy exploring delicious food, and watching Formula 1 when I'm not coding.I write articles about sustainability , Java ecosystem and anything I am interested in Medium

Alejandro Serrano Mena is a passionate of formal methods and functional programming in software development, especially using Kotlin and Haskell as languages. He works as researcher in the Kotlin Language Evolution team at JetBrains and helps co-maintaining the Arrow library. He enjoys not only using and improving those tools, but also spreading the word: he's written four books targeting different levels, regularly gives talks in conferences and meetups.For quite some time Alejandro was an academic, working on the area of compilers and type systems for functional languages. His PhD thesis versed over error messages, and he's been involved in efforts like improving GHC's support for impredicativity. This knowledge is put in practice in several open source projects, many of them using metaprogramming techniques or compiler extensions.

Alina is a developer advocate for GraalVM at Oracle. Loves both programming and natural languages, compilers, and open source. Ambassador of snacks and not running.

Annie is a Developer Advocate at Coralogix, where she connects with developers to spark conversations about smarter observability and how to connect deep technical metrics with outcomes that matter. As a Green Software Champion, Annie also advocates for reducing the environmental impact of software and empowering developers to create solutions that are both impactful and sustainable. Originally from New Zealand, she brings a warm, community-focussed approach to her talks and content. Prior to Coralogix, she was a software engineer at Xero, and has a background in law.

Anton is a Developer Advocate at JetBrains, working with Kotlin, IntelliJ IDEA, and AI-driven developer tools. With a background in server-side development, he has spent over a decade building software for developers. A Java Champion since 2014, Anton speaks at conferences, shares insights on the Kotlin YouTube channel, and enjoys exploring new ideas in programming languages, AI-powered tooling, and developer workflows. He’s always experimenting with new tech, looking for ways to make coding more efficient and enjoyable.

Artem Makarov is a Principal Engineer at Code Nomads. He's been working on Java projects in various industries for the past 12 years. Having Masters in Electronics Engineering he is passionate for applying engineering practices in his projects, contributing to better software design and reliability. Besides his developer role, he frequently helps aspiring developers to master software developer craft by sharing knowledge and hosting trainings. In his free time he enjoys traveling, road cycling and learning electronic music production.

A lifelong Java enthusiast turned CTO with experience in software engineering, system architecture, cloud computing, and digital transformation. From building enterprise-scale applications to integrating blockchain and digital twins into cloud-native platforms, I have led global teams across Europe, the Middle East, and Asia. My current focus is on modernizing supply chains through secure, scalable, intelligent solutions with a firm nod to sustainability and open-source innovation.

Balkrishna works as an engineering lead at ING Bank. He is a frequent speaker at renowned tech conferences. He has passion for continuous learning and genuine desire to sharing knowledge. Although he has been working with Java for many years, he finds latest developments in Java quite exciting. He is also an Oracle ACE Associate for Java.

Christian Tzolov leads the Spring AI and MCP Java SDK projects as an R&D Software Engineer on Broadcom's Spring team. He bridges the gap between enterprise systems and AI, giving Java developers practical tools to build intelligent applications.

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

Faris Aziz is a Staff Frontend Engineer specializing in React, Next.js, monetization systems, and resilient web architecture. He's led teams in early-stage startups and scaling companies, built career ladders from scratch, and shipped systems used by millions. His work spans greenfield builds and legacy refactors across Fintech, SaaS, Fitness, and Connected TV, with companies like Smallpdf, Fiit, Discovery, GCN, and Navro. He focuses on building performant, user-centric applications with solid observability and maintainability. Faris co-organizes ZurichJS, contributes to tools like Raycast, and spends time contemplating life's great questions, like why the build works on his machine but nowhere else.

Gunter is a Senior Systems Engineer with 25 years of experience in different roles in software engineering. Since 2005 he is developing Mission Critical Software systems via his employer ICT TriOpSys.He likes sharing knowledge about the Java ecosystem and does so by means of blogging and many internal workshops and presentations at ICT TriOpSys.

Hanno Embregts is a Java Developer with a passion for learning, teaching and making music.In his day-to-day job as a Teacher / Technology Advocate at Info Support, Hanno prefers work that is fast-paced and versatile. This is why he juggles Java development, software architecture, public speaking, leading Info Support’s Speaker Community and teaching courses at Info Support’s Knowledge Centre.Hanno is a Java Champion, an Oracle ACE Pro and one of the leaders of the NLJUG (the Dutch Java User Group). Outside of work Hanno likes making music with his friends. He plays the flute, the guitar and he likes to sing.Software conferences are Hanno’s favourite thing in the world, because they allow him to do the three things he loves most at the same time: learning new things, teaching others about stuff he discovered and yes: even making music from time to time!

Holly Cummins is a Senior Principal Software Engineer on the IBM Quarkus team and a Java Champion. Over her career, Holly has been a full-stack javascript developer, a build architect, a client-facing consultant, a JVM performance engineer, and an innovation leader. Holly has led projects to understand climate risks, count fish, help a blind athlete run ultra-marathons in the desert solo, and invent stories (although not at all the same time). She gets worked up about sustainability, technical empathy, extreme programming, the importance of proper testing, and automating all the things. You can find her at http://hollycummins.com, or follow her on socials at @holly_cummins.

Iulia’s mission is to make tech exciting, understandable, and accessible to the new generation. With a background spanning data science, AI, cloud architecture, and open source she brings a unique perspective on bridging technical depth with approachability. She’s building her own brand, Back To Engineering, through which she creates a community for tech enthusiasts, engineers, and makers. From YouTube videos on building robots from scratch, to conference talks or keynotes about real, grounded AI, and technical blogs & tutorials — Iulia shares her message worldwide on how to turn complex concepts into tools developers can use every day.

Professional software developer since 1997, with much of that time spent helping developers build software that doesn't suck. A Typed Pure Functional Programming zealot who often compromises on his ideals to just get stuff done. Currently a Developer Advocate for AWS.

Jeroen Egelmeers is a Prompt Engineering Advocate and GenAI Whisperer at Sogeti Netherlands. He also serves as a Software Engineering Trainer at the Capgemini Academy and is one of the authors of the latest TMAP book.Jeroen frequently delivers presentations on Prompt Engineering, AmpCoding, and Software Quality at various events and venues. He is the founder of the Crafting AI Prompts Framework — a framework designed to help create optimal prompts while addressing concerns such as non-disclosure, data security, GDPR compliance, and other constraints. He also tracks the latest tools, models, and strategies for Agentic Programming on the framework's website.

Developer advocate with more than 15 years of experience designing, developing and maintaining Android, Java SE/EE and Spring applications. Strong focus on getting things done with the Agile mindset. Love to share knowledge on the latest Java language, EE and Spring improvements by giving workshops and talks as well as participating in them.

Josh (@starbuxman) has been the first Spring Developer Advocate since 2010. Josh is a Java Champion, author of 7 books (including "Reactive Spring") and numerous best-selling video training (including "Building Microservices with Spring Boot Livelessons" with Spring Boot co-founder Phil Webb), and an open-source contributor (Spring Boot, Spring Integration, Axon, Spring Cloud, Activiti, Vaadin, etc), a Youtuber (Coffee + Software with Josh Long as well as my Spring Tips series ), and a podcaster ("A Bootiful Podcast").

Lize Raes loves helping developers to bring AI into real-world applications. As Developer Advocate for Java + AI at Oracle and collaborator at LangChain4j, she’s invested into making cutting-edge tech accessible and useful for developers. Her path has taken her from cochlear implant research to advising the Belgian government during COVID-19, to bioinformatics for drug development. Lize likes her projects hands-on and slightly unconventional, especially when they help make the world a bit better. Outside of work, you’ll find her behind the piano or in her woodworking atelier.

Manish Askani is a Staff Engineer at Picnic Technologies, where he focuses on Operational Excellence in the Consumer domain. His work centers on improving production reliability, latency, and performance of high-throughput Java systems used by millions of users. Manish spends most of his time deep in JVM behavior, garbage collection and memory performance, translating low-level runtime mechanics into practical improvements for real production workloads. He has led multiple initiatives around incident reduction, performance stability, and deployment resilience and regularly works at the intersection of platform engineering and application architecture.

Patrick Baumgartner is a Java Champion, passionate software crafter, and technical agile coach at 42talents. He helps teams build elegant, simple, and robust solutions, specializing in cloud software with Java, the Spring ecosystem, and other open-source technologies.Patrick is an active member of the Software Craft, Java, and Agile communities in Switzerland. As a trainer and coach, he focuses on making a real impact by sharing knowledge, experimenting, and fostering continuous improvement. He enjoys learning with and from others.

Paulien is a passionate software engineer in love with readable, reliable, and testable code, independent of the language or technology used. At OpenValue, she works on helping companies set up better software. Lately, she has been giving presentations and workshops about what she encounters during her day-to-day work. In her free time, she likes to practice sports and to cook, whenever she is not rebuilding her house and garden.