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MEET THE SPEAKERS

DEVELOPERS
STAGE DAY 2

Global developers, software engineers, and architecture leaders take the spotlight on the Developers Stage (Day 2), sharing real-world experience in designing, scaling, and maintaining complex systems. Covering topics such as hybrid cloud, multi-site applications on GKE, client-server evolution, and innovative architecture patterns, these speakers offer the technical expertise and strategies that empower teams to build sustainable digital ecosystems.

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ALLARD BUIJZE

Founder and CTO

  • LinkedIn
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Allard Buijze is Founder and CTO at AxonIQ with a solid software development background. Starting at the age of 6, he has developed a great passion for programming and has guided both large and small organizations in building performant and scalable applications. Allard likes to help customers make appropriate future-proof, technical decisions. As a former software architect specializing within the field of "scalability" and "high performance", he has worked on several small and large projects, where performance and complexity were recurring themes. Allard is convinced that a good domain model is the beginning of contributing to the overall performance of an application. From this conviction, he has developed the Axon Framework, which helps applications thrive surprisingly well in the AI-Driven era. 𝗦𝗲𝘀𝘀𝗶𝗼𝗻 𝗧𝗶𝘁𝗹𝗲: When Machines Maintain: Software Architecture in an AI-Driven Era 𝗦𝘆𝗻𝗼𝗽𝘀𝗶𝘀: AI is increasingly writing, reviewing, and debugging our code. But why does it struggle with some systems while thriving with others? This talk explores how traditional software architecture assumptions clash with AI's needs for understanding and maintaining our systems. Through real-world examples and practical insights, we'll discover what makes systems truly AI-ready and how small architectural shifts today can unlock massive productivity gains tomorrow. For engineers and technical leaders ready to build systems that amplify rather than fight AI assistance.

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SERGEY SHCHERBAKOV

Strategic Cloud Engineer (SCE)

  • LinkedIn
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Seasoned specialist professionally providing software architecture consulting services since 2013 for distributed high performance software systems on-prem and in cloud environments. 5 years experience of leading software development department in an international machine learning startup company. Currently helping Google Cloud customers with Google Kubernetes Engine, Google Distributed Cloud, Apigee API management platform and cryptography with warm memories of providing consulting services for Spring Framework, RabbitMQ, Apache Tomcat, Gemfire in-memory data-grid software worldwide. 𝗦𝗲𝘀𝘀𝗶𝗼𝗻 𝗧𝗶𝘁𝗹𝗲: Highly Available and Highly Loaded Multi-Site Applications on GKE in Google Cloud 𝗦𝘆𝗻𝗼𝗽𝘀𝗶𝘀: Architecting highly available, mission-critical applications that can handle massive traffic spikes is a significant challenge for any organization. This session will deep dive into a real-world scenario, demonstrating how Google Kubernetes Engine, Cloud Service Mesh, AlloyDB, and Memorystore enable seamless scaling to over 100,000 requests/second during national peak events. Discover key requirements, challenges and architectural choices in building secure, resilient, and scalable applications that withstand unpredictable traffic spikes on Google Cloud.

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HOLGER SCHELL

Senior Managing Director

  • LinkedIn
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Holger Schell is Senior Managing Director at Schwarz IT, part of Schwarz Digits, where he leads Software Engineering, spanning development, platform engineering, and Enterprise Architecture. With 20 years of IT experience, including 10 years in strategic consulting, Holger drives the creation of self-developed digital products supporting the Schwarz Group ecosystem. His focus is on secure, scalable, and sovereign solutions that embody digital independence and trust. 𝗦𝗲𝘀𝘀𝗶𝗼𝗻 𝗧𝗶𝘁𝗹𝗲: Unleashing Business Value in a Digital Sovereign World 𝗦𝘆𝗻𝗼𝗽𝘀𝗶𝘀: Digitalization opens new opportunities for value creation. This session explores how Schwarz IT implements sovereign, tailor-made solutions in cloud, cybersecurity, AI, communication, and workplace innovation, serving the Schwarz Group and beyond. Discover how businesses, municipalities, and organizations can benefit from a unique European model of digital sovereignty built on autonomy, security, and proven performance.

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IONUȚ DUMITRU

Founder and CEO

  • LinkedIn
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Ionut Dumitru is the founder and CEO of ClusterCS, a platform built to make high-availability hosting simple, scalable, and accessible for everyone — from agencies to SaaS teams. With over a decade of experience in web infrastructure and automation, Ionut created ClusterCS to solve the real-world challenges of uptime, performance, and scalable server management without the need for large DevOps teams or complex cloud setups. Since launching in 2016, he has focused on helping businesses stay fast, secure, and online — even during their biggest traffic moments. Passionate about innovation and customer-driven development, Ionut continues to evolve ClusterCS with a mission to democratize powerful infrastructure and bring intelligent, automated server management to teams everywhere. 𝗦𝗲𝘀𝘀𝗶𝗼𝗻 𝗧𝗶𝘁𝗹𝗲: Zero-Downtime with High Availability for Agencies & SaaS: Meet ClusterCS 𝗦𝘆𝗻𝗼𝗽𝘀𝗶𝘀: In a world where milliseconds matter and uptime equals revenue, agencies and SaaS teams face a critical challenge: how do you guarantee fast, reliable, scalable infrastructure without enterprise budgets or DevOps armies? When campaigns scale or AI-driven traffic spikes hit, downtime destroys trust and conversions. ClusterCS delivers automated high-availability, load balancing, and zero-downtime deployments for growth-focused teams. It offers full control without complexity, integrating with major cloud platforms and also working with any hosting provider. Stay tuned for innovative AI-powered features that will make managing servers and websites effortless.

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WOUTER BAUWERAERTS

Full-stack Developer / Team Player

  • LinkedIn
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Wouter is a full stack Java developer who loves tackling tricky problems and turning them into smart, clean solutions. At The Beehive, he’s known for his creativity, curiosity, and focus on quality. He enjoys experimenting, mentoring teammates, and sharing ideas to strengthen both projects and teams. With teaching experience in Antwerp, Wouter brings a mix of hands-on experience and a genuine passion for learning and growth. 𝗦𝗲𝘀𝘀𝗶𝗼𝗻 𝗧𝗶𝘁𝗹𝗲: From Fragile to Fearless: Writing Tests That Last 𝗦𝘆𝗻𝗼𝗽𝘀𝗶𝘀: Do your tests protect you or are they slowing you down, especially when refactoring? Too often, unit tests break because they’re tied to code structure instead of the desired behavior. In this talk, we’ll compare two styles of unit testing—solitary and sociable—through real code examples that reveal their strengths, pitfalls. We’ll also dive into integration testing. At the end, you’ll leave with practical techniques to write resilient tests that survive change and boost confidence without adding maintenance overhead!

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THIAGO DE FARIA

Architecture Modernization Specialist

  • LinkedIn
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Thiago is an AWS Senior Migration and Modernization Solutions Architect renowned for his data and AI/ML expertise. His empathetic, equitable approach is a hallmark of his leadership, guiding teams at prominent organizations like ASML, KLM, and Nike. Thiago is at the vanguard of integrating fast flow and Team Topologies into architecture modernization initiatives (especially Data and AI/ML cases), emphasizing kindness and empathy in tech management. 𝗦𝗲𝘀𝘀𝗶𝗼𝗻 𝗧𝗶𝘁𝗹𝗲: Your Architecture Modernization Will Fail: Team Boundaries and Patterns That Actually Work 𝗦𝘆𝗻𝗼𝗽𝘀𝗶𝘀: You've read about strangler figs, event interception and branch by abstraction. Your team picked the "right" technical pattern. Someone somewhere is really happy with their new Saga pattern. Six months later, you're stuck - releases are even slower, teams are drowning and executives are questioning the entire effort. Architecture modernization fails because we treat it as a pure technical problem. It's not. It's a problem of team interactions, unclear boundaries, domain events, poor communication paths and organizational structures fighting against the new architecture. This talk dissects why modernization efforts stall and presents an integrated framework combining: - Team Topologies principles for structuring modernization work - Practical phase management during dual-mode operation - Communication patterns that make or break distributed architecture changes - How AI/ML tooling can accelerate (not replace) human decision-making in legacy understanding and transformation planning You'll leave with a checklist of sociotechnical red flags that predict failure, and concrete patterns for aligning teams, technology, and flow during modernization.

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GABRIEL LAZĂR

Software Engineer

  • LinkedIn
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Software Engineer shaping the future of gaming at Frostbite, Electronic Arts Romania. Passionate about high-performance computing, graphics, and pushing the boundaries of real-time technology. 𝗦𝗲𝘀𝘀𝗶𝗼𝗻 𝗧𝗶𝘁𝗹𝗲: Compute Through Color. The Evolution of GPU Architectures. 𝗦𝘆𝗻𝗼𝗽𝘀𝗶𝘀: From arcade graphics to AI powerhouses, this talk explores the remarkable journey of GPU evolution. Through pixels, waves, and tensor cores, we’ll trace how GPUs shifted from fixed-function graphics hardware to massive general-purpose parallel processors. We’ll examine how GPU architectures differ fundamentally from CPUs, and why that divergence makes them uniquely suited for high-throughput, parallel workloads. We’ll delve into architectural milestones such as SIMD, streaming multiprocessors, and the increasing role of GPUs in modern computing workloads.

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Bogdan Vizureanu

Co-founder

  • LinkedIn
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𝗠𝗼𝗱𝗲𝗿𝗮𝘁𝗼𝗿: Bogdan is one of the co-founders of Code for Romania and he is currently one of the Technology Officers that help in coordinating the project teams and in delivering the civic apps the organization’s volunteers are working on. Having over 10 years of experience in .net, flavoring from version 2.0 in a POS Windows application, to multi-tenant Azure enterprise solutions, Bogdan is also a Technical Team Lead for a technology company whenever he is not managing the coding teams in the biggest civic tech ONG in Romania.

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