Jack Halford - Resume 🚶

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Work Experience

2022~present

Focusing on public cloud infrastructure, on GCP
tools: kubernetes (GKE), tanka, terraform, prometheus, grafana, google cloud armor

2019~2022, 3y

Level 1 on-call rotation for worldwide SaaS search engine
Helped scaling the baremetal infrastrucure from 1 to 10 thousand servers
Maintenance of EC2/k8s deployments: logs, metrics, configuration management, etc.
Evaluating and benchmarking new hardware setups, disks, CPUs, datacenters

2018, 6m

Internship in the hosting squad, managing IaaS (xen) and PaaS (lxc, cgroup) products alongside large scale storage infrastructure (zfs, nfs, iscsi) over 4 data centers
Design and implementation FreeBSD syscalls: per-thread credential management and VFS syscalls for a userspace fileserver (nfs-ganesha)
Implemention of parallel filesystem mounting in ZFS to shorten boot time
Setup and maintenance of a FreeBSD CI platform for the nfs-ganesha project (the existing CIs maintained by CEA and Redhat were linux based)

2017, 6m

Development of a custom bluetooth stack for connecting and synchronizing multiple speakers together. Integration of the modified stack in android at the OS level
Ported the android bluetooth stack to arm for benchmarking on raspberry pi
Succesfully helped pitching the product at CES Asia (Shanghai - mai 2017) and MWCA (SanFrancisco - sep 2017)

2016~2018, 2y

2015~2016, 1y

Theory: quantum mechanics, special relativity, statistical physics.
Experimental: optics, analog electronics, lasers.
Mathematics: complex analysis, Hilbert algebra, measure theory.
Computational: fortan, python, matplotplib, gnuplot.
Extra-curricular: the “CRANS” is an ISP for the campus managing 200+ wifi points, switches in a dozen buildings and ethernet ports in all student dorms.

2013~2015, 2y