Calum Calder
Senior Software Engineer at Meta
London, England, United Kingdom
Summary
🤩
Rockstar🎓
Top SchoolCalum Calder is a Senior Software Engineer based in London with a decade of experience spanning low-level Unix/Linux system programming, high-performance distributed systems, and full-stack SaaS development. He has led teams and initiatives at Bloomberg, driven core infrastructure and emission calculation engines at a climate-focused startup, and currently works on engineering challenges at Meta. Calum combines hands-on IC depth—illustrated by contributing post-copy KVM migration features to the open-source Ganeti project—with pragmatic architecture choices that balance scalability, cost, and time-to-value. He thrives in collaborative environments where he can mentor others, establish engineering best practices (CI, tooling, infrastructure), and still dive deep into systems-level problems. An understated strength is his ability to translate low-level platform expertise into reliable product-facing services and measurable operational improvements.
10 years of coding experience
6 years of employment as a software developer
Master’s Degree Computer Science, Master’s Degree Computer Science at Durham University
Github Skills (8)
kvm10
rpc10
python10
virtualization10
devops8
docker4
dockers4
haskell4
Programming languages (2)
Github contributions (5)
ganeti/ganeti
Aug 2017 - Sep 2017
Ganeti is a virtual machine cluster management tool built on top of existing virtualization technologies such as Xen or KVM and other open source software.
Role in this project:
Back-end Developer & DevOps Engineer
Back-end Developer & DevOps EngineerContributions:6 commits, 5 PRs, 2 comments in 1 month
Contributions summary:Calum contributed to the Ganeti project by implementing and refactoring backend logic related to KVM hypervisor management and instance migration, specifically focusing on postcopy migration features. They introduced functionality for automatically enabling postcopy mode, integrated this logic into the instance migration tasklet, and exposed hypervisor functions via RPC. Furthermore, the user modified the codebase to disable CPU pinning in specific configurations and also fixed a bug related to gnt-cluster verify and ssh clutter.
pythoncluster-managementvirtualizationon-topmanagement-tool
calumcalder/spaCy
Mar 2018 - Nov 2020
Contributions:2 pushes, 2 branches in 2 years 8 months
nlppythonlanguage-processingindustrialmachine-learning
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