During February 2026, Bertrand contributed to the Hyle repository by enhancing backend reliability and developer workflows. He addressed a compatibility issue in the GCS Uploader by explicitly installing the default crypto provider, ensuring seamless integration with the Rustls crate. Bertrand also improved configurability by enabling environment variable parsing for multiple fallback addresses, streamlining deployment flexibility. Additionally, he introduced multi-node development network support for Hylix, allowing developers to start, stop, and join multiple Docker nodes for consensus testing with automated local configuration generation. His work leveraged Rust, Docker, and DevOps practices, demonstrating depth in backend problem-solving and developer experience improvements.