Succeeding Mehdi Dogguy, Lamb successfully ran for the position of Debian Project Leader in 2017 and 2018. He was re-elected in 2018 and after announcing he would not run for third term he was succeeded by Sam Hartman in April 2019. After contributing to the LilyPond packaging in December 2006, he became more involved in the Debian community and the project itself by working on Debian Live via the Google Summer of Code programmme. Early work in Debian revolved around contributing to the Debian Installer as well as the X.org, JavaScript and Python packaging teams. In 2008, he became an official Debian Developer. He is now part of the FTP Master team, responsible for legal and copyright issues as well as maintaining the state of packages and the archive, accepting and rejecting packages. Outside of these roles, he is a core contributor to the Lintianquality assurance tool and the Python packaging and quality assurance teams. He is also the author of many Debian-specific tools such as , tools as well as the Chrome browser extension. He also is a contributor to the Debian Long Term Support initiative. In 2019, Lamb received an award from Google for his work on Reproducible builds within Debian.
Reproducible builds
Lamb is a core contributor to the Reproducible builds project, a set of software practices that can ensure that no malicious flaws have been introduced during compilation processes. As part of this, he has authored numerous patches for upstream projects and toolchains, maintains the tool and operates the and web services. In November 2016, Lamb was awarded a grant from the Linux Foundation's Core Infrastructure Initiative to fund his work in this area. In November 2018, he oversaw the Reproducible Builds project joining the Software Freedom Conservancy and in 2019, Lamb received an award from Google for his work on Reproducible builds within Debian including working on making the Debian Installer reproducible.
Other
He also regularly contributes to the Tails operating system, Djangoweb development framework and is also the author of a number of free and open-source tools such as Python bindings for the Shamir's Secret Sharingcryptographicalgorithm, a Strava Chrome browser extension as well as a number of hacks such as a Sudoku solver implemented entirely within a PostScript document and a method of using strace to give the cp shell command a progress bar. In 2018, due to licensing changes to several Redis Labs modules making them no longer free and open source, he forked versions from prior to the license change and now maintains changes to these modules under their original free licenses. Lamb has also been a reviewer and judge for the New York University Tandon School of Engineering's Cyber Security Awareness Week, an annual conference where tens of thousands of students compete in events and learn skills in cyber security in 2017 and 2019.