Jon Ludlam
Undergraduate Tutor Computer Systems Fellow
Cambridge, England, United Kingdom
Summary
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Rockstar🎓
Top SchoolJon Ludlam is a Cambridge-based software engineer and Computer Systems Fellow with 14 years of industry experience and a strong academic foundation (MSci, PhD) from the University of Cambridge. He spent over a decade at Citrix as a Principal Software Engineer and now tutors undergraduates while continuing hands-on systems work. His open-source contributions include substantive back-end work on OCaml's popular Dune build system and the XenAPI server, where he fixed tricky build, documentation, and configuration bugs. He blends deep systems-level expertise in process execution, path handling and distributed service configuration with an educator’s clarity, making complex infrastructure changes both reliable and maintainable. Notably, he pairs long-term research training with practical production engineering, a combination that surfaces in careful test additions and tooling improvements.
14 years of coding experience
12 years of employment as a software developer
MSci, PhD, Physics, Chemistry, MSci, PhD, Physics, Chemistry at University of Cambridge
Github Skills (8)
build-system10
c-language10
dune10
cprogramming-language10
back-end-development10
ocaml10
testing9
algorithm3
Programming languages (16)
Github contributions (5)
xapi-project/xen-api
Oct 2011 - Nov 2018
The Xapi Project's XenAPI Server
Role in this project:
Back-end Developer
Back-end DeveloperContributions:2 releases, 1069 commits, 336 PRs in 7 years 2 months
Contributions summary:Jon Ludlam primarily worked on enhancing the Xapi Project's XenAPI Server. His contributions included resolving configuration file syncing issues, implementing support for "xenopsd = true", fixing login functionality on slave nodes, and code refactoring. Moreover, the user has
xapi
ocaml/dune
Dec 2018 - May 2019
A composable build system for OCaml.
Role in this project:Back-end Developer
Back-end DeveloperContributions:35 reviews, 9 commits, 12 PRs in 4 months
Contributions summary:Jon primarily contributed to the build system for OCaml, focusing on enhancing its functionality and resolving issues. Their work included modifying core files related to process execution, path handling, and the build process itself. The user also addressed a specific bug related to resolving links in mld files and introduced a new test case for this functionality. Furthermore, the user made adjustments to the odoc tool within the build system and addressed documentation-related issues.
build-systemocamlopamdunejbuilder
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