Bas worked on cryptographic modernization and dependency management across Cloudflare’s cloudflare/boring and cloudflare/cloudflared repositories. In cloudflare/boring, Bas upgraded the default cryptographic curve to X25519MLKEM768 for server-side connections, aligning security with modern browser and edge standards while improving interoperability. The implementation involved backend development and cryptography using Go and Rust, with careful attention to TLS compatibility. In cloudflare/cloudflared, Bas focused on dependency hygiene by updating golang.org/x/crypto and related modules, enhancing security and build reproducibility. The work demonstrated depth in assembly language, dependency management, and secure backend engineering, addressing evolving security requirements through targeted, maintainable code changes.