Linux Engineer (Bash, Python, Ansible)

Linux Engineer (Bash, Python, Ansible)

Hong Kong, Hong Kong SAR, Hong Kong

Job Description:

Responsibilities

• Linux Systems Administration: Install, configure, patch, and maintain RHEL/Fedora servers and related infrastructure.

• Performance & Low-Latency Tuning: Perform network/system/kernel tuning for ultra-low-latency workloads; develop benchmarks and monitoring/observability dashboards.

• Scripting & Automation: Develop reliable Bash, Python, and Perl scripts for routine operations, troubleshooting/diagnostics, and internal tooling.

• Configuration Management: Build and maintain Ansible playbooks or Salt states (Salt preferred); ensure idempotent configuration across large node fleets (hundreds of nodes).

• Virtualization & Cloud: Deploy and manage Proxmox clusters; create and maintain VMs and containers; integrate with AWS services when relevant.

• Network Engineering: Implement and troubleshoot advanced networking, including VLANs, bonding/NIC teaming, SR-IOV, TCP/UDP tuning, and QoS. Cisco and Fortinet experience is a plus.

• Storage Engineering: Administer and troubleshoot SAN/NAS and block storage via iSCSI. Perform LUN masking, multipathing, and Linux host performance tuning. HPE SAN experience is a plus.

• Incident Response: Respond to production incidents promptly (including some after-hours/weekend coverage).

• Documentation & Knowledge Sharing: Create clear runbooks, SOPs, and technical documentation; mentor junior engineers.

• Security & Compliance: Apply hardening standards, manage SELinux where required, and support audit/compliance requirements.

• What You Bring

• Bachelor's degree in Computer Science, Information Technology, or related field.

• 5–10 years of professional Linux engineering experience with RHEL/Fedora.

• Strong problem-solving skills; able to work independently and collaboratively; proactive approach to automation and continuous improvement.

• Strong networking fundamentals: TCP/IP, routing, switching, and firewalls.

• Proven experience with system/kernel/network performance tuning, including low-latency optimization.

• Hands-on experience with Proxmox (preferred) or comparable virtualization platforms (KVM, VMware).

• Advanced scripting skills in Bash, Python, and Perl.

• Demonstrated experience with Ansible or Salt (Salt preferred).

• Experience with container technologies (Docker, LXC/LXD).

• Familiarity with monitoring/observability stacks: Prometheus, Grafana, Zabbix, LibreNMS.

• Knowledge of security frameworks such as CIS and NIST.

• Experience with Windows networking.

• Working knowledge of AWS services (EC2, VPC, S3) is a plus.

• Prior experience in high-frequency trading and financial services is a plus.

• Fluency in English; Mandarin and/or Cantonese fluency is a plus.

Required Skills

• Prometheus

• Performance Tuning

• TCP/IP

• Perl

• Routing

• Support

• Cantonese

• Grafana

• Virtualization

• Technical Documentation

• Financial Services

• Operations

• Firewalls

• Mandarin

• Trading

• Compliance

• Ansible

• Bash

• VMware

• Servers

• Storage

• Continuous Improvement

• Optimization

• Infrastructure

• AWS

• Automation

• Networking

• Information Technology

• Computer Science

• Security

• Linux

• Troubleshooting

• Docker

• Administration

• Windows

• Documentation

• Engineering

• Python

• English

• Science

• Management

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