Nagib Sabbag Filho
Lead Architect, Professor, Speaker, and Tech Author
📋 Biography
Nagib serves as a Microsoft MVP, has experience as a Systems Architecture Leader, Tech Manager, University Professor, and Senior Technical Lead, with a career marked by solid academic and professional achievements. He holds a postgraduate degree from SENAC and from Mackenzie Presbyterian University, with an MBA in Software Technology from USP, in addition to participating in extension programs from MIT and the University of Chicago. He is the author of a peer-reviewed scientific article on chatbots, presented in person at the University of Barcelona. He actively participates in the technical community, with over 50 published articles, including more than 10 articles on iMasters. As a speaker, he has participated in nationally relevant events, such as the .NET Architecture tracks at TDC São Paulo, Solutions Architecture at TDC Floripa, and Developer Technologies at MVP Conf, as well as speaking at TOTVS Developers.
✨ High-Impact Contributions 5
This live session focuses on helping mid-to-senior developers excel in System Design interviews by teaching structured thinking, requirement analysis, scalable architecture design, common pitfalls, and clear technical communication in a realistic, interview-style format.
This talk explores how "MessagePack combined with .NET" can be used to design and implement an ultra-fast, efficient caching layer, focusing on high-performance serialization, reduced memory footprint, and low-latency data access. Attendees will learn practical strategies for leveraging MessagePack in real-world .NET applications, understand when and why it outperforms traditional formats like JSON, and see architectural patterns that enable scalable, resilient, and high-throughput caching in modern distributed systems.
I am the founder and editor-in-chief of Leaders.tec.br, a continuously published digital magazine dedicated to software architecture, cloud computing, and developer productivity. With an official ISSN (2966-263X), the magazine features high-quality articles, written by industry professionals and community leaders. As editor, I oversee editorial standards, curate technical submissions, and lead publication efforts that empower developers across Brazil and beyond. The magazine follows a rigorous editorial schedule, publishing biweekly, and has reached over 50,000 page views. It features more than 30 articles indexed on Google Scholar and engages a growing LinkedIn community of over 1,180 followers. Leaders.tec.br has become a trusted resource for technology professionals, particularly within the .NET ecosystem.
This presentation, delivered during The Developer's Conference (TDC), reached thousands of attendees and addressed how modern software systems must evolve continuously to keep pace with rapidly changing business demands, without compromising quality, scalability, or performance. I presented the core principles of Evolutionary Architecture, emphasizing practical techniques such as fitness functions, modular design, API versioning, and feature toggles. Through real-world case studies and hands-on insights, I demonstrated how architects and technical leaders can design adaptive systems that reduce technical debt, foster sustainable innovation, and ensure long-term maintainability in dynamic environments.
This presentation, delivered as part of The Developer's Conference (TDC), reached thousands of attendees and explored the key differences between the SHA-1 and SHA-256 hashing algorithms, focusing on their performance, security characteristics, and practical implications. I examined how these differences influenced algorithm selection across various contexts, highlighting the trade-offs between speed and cryptographic strength. The session also covered current industry standards and best practices for securely implementing hash functions in modern systems. Attendees gained a clear, practical understanding of when and why to use each algorithm, enabling them to make informed, security-aware decisions in their development workflows.