Senior Linux Engineer
Key qualifications: 5–10 years Linux engineering (RHEL/Fedora), strong networking fundamentals, low-latency tuning experience, Proxmox (preferred) plus scripting/automation skills; monitoring and security frameworks (e.g., Prometheus/Grafana, CIS/NIST) are a plus.
- Ensure trading platform reliability and security (onsite HK): partner with trading support and development to deliver required performance, availability, and security; handle production incidents (some after-hours/weekends).
- Own low-latency Linux performance: perform network/system/kernel tuning for ultra-low-latency workloads, including benchmarks and monitoring dashboards.
- Automate and manage infrastructure at scale: build idempotent configuration using Ansible or Salt (Salt preferred) and write robust Bash/Python/Perl tooling.
- Operate virtualization and cloud infrastructure: administer Proxmox clusters, manage VMs/containers, and support AWS integration where applicable.
- Advanced networking and storage engineering: troubleshoot VLAN/bonding/NIC teaming/SR-IOV/TCP-UDP/QoS; manage SAN/NAS/iSCSI (LUN masking, multipathing, performance tuning).
- Security/compliance + documentation: apply hardening/SELinux standards, support audits, and produce runbooks/SOPs and mentor others.
- Excellent communication skills in English. PLUS, if you can speak Cantonese / Mandarin.
