Speakers
Don't Hesitate and Submit Your Proposal!
Our Selected Speakers
The decision which proposal to pick is never easy. Here are the selected speakers for our upcoming 2025 online conference.
Sven Woltmann has been a Java developer since the early days. He works as an independent developer, trainer, and course instructor, focusing on scalable enterprise applications, optimization of algorithms, clean code, and clean architecture. He shares his knowledge about Java, architecture, algorithms, and data structures in videos, his newsletter, and his blog, https://www.happycoders.eu/.
Ram is the founder of the DevOps tools GCeasy.io, fastThread.io, and HeapHero.io. Every single day, millions & millions of people in North America travel, bank, and do commerce using the applications that Ram Lakshmanan has architected. Ram advises startups, Fortune 500 enterprises, and Governmental organizations on their critical technology initiatives.
Andres Sacco has been a developer since 2007 in different languages, including Java, PHP, NodeJs, Scala, and Kotlin. His background is mainly in Java and the libraries or frameworks associated with this language. In most of the companies he worked for, he researched new technologies to improve the performance, stability, and quality of the applications of each company.
Buhake Sindi brings over 19 years of experience as a Senior Solutions Architect & Developer, specialising in Java Enterprise technology stacks. His extensive background in coding, design, and problem-solving is complemented by his role as a skilled DevOps Engineer, with 10+ years of hands-on experience in optimising and automating deployments. Buhake excels in translating project requirements into technical specifications and delivering robust, scalable solutions. His passion for technology and ability to communicate complex concepts clearly have made him a sought-after technical speaker and writer. Buhake’s dedication to mentoring and guiding developers positions him as an influential advocate for cutting-edge development practices in corporate environments.
Haim Michael is an experienced software development trainer, entrepreneur, and lecturer with a proven track record of helping developers master modern technologies. He is the founder of life michael (lifemichael.com), a global training brand that delivers professional courses in Java, Python, JavaScript, Scala, Kotlin, and more. Haim combines academic teaching with professional training, having lectured at leading universities such as Bar-Ilan University, HIT, Shenkar, and the Technion, while also partnering with top tech companies to strengthen and expand their engineering capabilities. His approach focuses on making complex topics practical, engaging, and accessible for developers at all levels.
Kapil Poreddy is a seasoned Software Engineering Leader with over 19 years of global experience architecting and scaling high-availability digital platforms across Retail, Healthcare, Telecom, and Aviation. Currently serving as a Senior Software Engineering Manager at Walmart Global Tech, he leads the Checkout and Transactions Platform, a mission-critical system processing $53B+ GMV and 8.6M daily transactions. His leadership has driven measurable business outcomes, including $73.2M in incremental GMV through checkout optimizations, 30% faster incident resolution via anomaly-driven observability, and multi-million-dollar cost savings through cloud optimization initiatives.
Ivan Yonkov is the CEO of the software consultancy Codexio and is proactively preaching Java to the community for a decade. Beside being a software developer for more than 10 years, he’s also a professional software and technical trainer, with various presences in formal universities, and was once a Training Director at the biggest software academy in the Balkans – SoftUni. This experience is mostly evident at Codexio, where three internship training camps per year are organized. Ivan loves to dig every bit of hidden code, especially in Java, thus they call him a Javarchaelogist.
Sergey is a distinguished engineering leader currently heading Microsoft’s Web Data Platform. Previously, he led Bing Shopping, where he developed machine learning–driven search systems that powered shopping experiences across Bing, resulting in significant increases in user engagement and revenue. Before joining Microsoft, Sergey worked at Yandex, where he built a best-in-class video search system renowned for its top-tier relevance. By leveraging advanced ML algorithms, he delivered precise, context-aware search results that set new benchmarks for search quality.
Thomas Krieger is a Lead Developer with 17 years of experience in Java development, specializing in concurrency and high-performance systems. He is the creator of an open-source tool that enables deterministic unit testing for multi-threaded Java applications, helping developers ensure reliability and reproducibility in complex concurrent code. Known for his technical depth, leadership, and commitment to innovation, Thomas continues to advance best practices in Java and actively contributes to the developer community.
René Wilby is a seasoned freelance software engineer specializing in development of full-stack web apps, microservices, APIs, and DevOps. René also has extensive experience as a university lecturer, trainer and speaker.
Li Haoyi graduated from MIT, has built infrastructure for high-growth companies like Dropbox and Databricks, and has been a major contributor to the open source community with projects with over 10,000 stars on Github. Haoyi has deep experience in the JVM and has used it professionally to build cloud infrastructure, distributed backend systems, programming languages, high-performance web applications, and much more.
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