Walid Sassi
13+ years building iOS apps at scale. Sharing what I learn so you don't have to learn it the hard way.
Who I am
I'm a Technical Leader Mobile at Sephora, part of the LVMH Group, in Paris, where I architect and ship mobile experiences used by millions of customers worldwide. With over 13 years in the Apple ecosystem, I've worked across industries, travel apps, public transit at RATP, and now luxury retail, always with the same goal: software that is fast, reliable, and a joy to use.
Before going full-time into industry, I spent a decade teaching university courses in Distributed Systems and System Programming. That background shaped the way I think about architecture, mentoring, and why clear mental models matter more than any framework.
What I work on
My day-to-day sits at the intersection of architecture, performance, and developer experience. I care deeply about writing code that teams can maintain and evolve over years, not just ship once.
Community work
Swift Academy Podcast
Host of the Swift Academy Podcast, conversations with engineers, architects, and indie developers about Swift, app architecture, and the craft of building for Apple platforms.
Listen →Conference Talks
Speaker at international Swift and iOS conferences, covering topics from concurrency patterns and architecture decisions to integrating AI into native development workflows.
SparkDI
Creator of SparkDI, an open-source dependency injection library for Swift. Built to be lightweight, compile-time safe, and easy to adopt in Clean Architecture projects.
View on GitHub →AI Driven Swift Architecture
Author of AI Driven Swift Architecture, a book on building maintainable, testable Swift codebases designed to work with AI agents, covering clean architecture, type-safe API layers, and concurrency patterns for the AI-augmented development workflow.
Discover the Book →Why this blog
"Most iOS content online covers the basics. SwiftTribune is for developers who are past that, who want to understand architecture trade-offs, write genuinely concurrent code, and think clearly about how AI is changing the way we build software."
Every article here is written from production experience. No toy examples. The goal is to give you the kind of depth that used to require years of hard-won mistakes to accumulate.
- Advanced Swift patterns and architecture insights
- Real-world concurrency with Swift Concurrency and Combine
- Dependency injection and testable code at scale
- AI and LLM tools applied to iOS development
- Performance profiling and reliability engineering