
Sto - Linux Kernel Developer
2 weeks ago
**Job Description**:
- Develop Linux Kernel new features and improve stability according to Shopee's scenarios
- Improve Linux Kernel's resource isolation and control on CPU/GPU/Memory/IO/Network in online service/batch job colocation
- Integrate with virtualisation components such as Kernel-based Virtual Machine/Qemu, container runtime components such as runc/containerd/CRI, resource scheduling components such as Kubernetes/Yarn
- Enhance performance and resource utilisation on node
- Conduct performance tuning on Linux Kernel according to different businesses, build and improve SLI/SLO
- Work closely with the Machine Reliability Engineering team on Kernel issues daily support, ensure Linux Kernel's stability
- Research and adopt cutting-edge technologies on Linux Kernel area
**Requirements**:
- Bachelor's or higher degree in Computer Science or related fields
- Familiar with Linux dynamic tracing and performance profiling (ebpf, perf, systemtap)
- Experience with software troubleshooting
- Skilled at Linux Kernel issues debug, such as soft lockup, hard lockup, dead lock, panic, OOM
- Experiences in complicated system softwares' design, development and optimisation
- Familiar with Linux Kernel source code, at least read 2~3 major modules' source code (scheduling, file system, network, I/O, memory management)
**Skills below are optional but preferable**:
- Familiar with container related technologies' implementation (cgroup v2, namespaces, ebpf) and read corresponding code
- Familiar with virtualisation technologies' implementation (KVM, Xen) and read corresponding codes
- Experiences in Linux Kernel performance tuning and customisation
- Contributed and submitted patches to Linux Kernel upstream
- Experiences in large scale IaaS platform or private cloud products
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