Senior Linux Engineer (Level 3/4 Administration)

Ambition

  • Hong Kong
  • Permanent
  • Full-time
  • 6 days ago
Our client is a leading Prop Trading house and seeking a highly skilled Linux Engineer with deep expertise in Level 3 and 4 administration to join our team. In this role, you will be responsible for advanced troubleshooting, performance optimization, automation, and architectural improvements of our Linux-based infrastructure. The ideal candidate will have extensive experience in enterprise Linux environments, strong scripting skills, and a passion for solving complex technical challenges.Key Responsibilities:
  • Perform Level 3/4 support , resolving complex Linux server issues (kernel, performance, networking, security).
  • Design, implement, and maintain high-availability Linux environments (clustering, load balancing, failover).
  • Automate system administration tasks using Bash, Python, Ansible, Puppet, or Terraform .
  • Optimize system performance through tuning, monitoring, and capacity planning.
  • Troubleshoot deep technical issues (filesystem corruption, kernel panics, network bottlenecks).
  • Implement and enforce security hardening (SELinux, firewalls, auditd, compliance).
  • Manage virtualization/containerization (KVM, Docker, Kubernetes, LXC).
  • Lead migrations, upgrades, and disaster recovery planning.
  • Collaborate with DevOps and development teams to improve CI/CD pipelines.
  • Document system architectures, processes, and troubleshooting guides.
Required Skills & Qualifications:
  • 5+ years of professional Linux administration experience (RHEL, CentOS, Ubuntu, Debian).
  • Expert-level troubleshooting (systemd, logs, strace, perf, kernel debugging).
  • Strong scripting skills ( Bash, Python, Perl ).
  • Experience with configuration management (Ansible, Puppet, Chef).
  • Knowledge of monitoring tools (Prometheus, Grafana, Nagios, Zabbix).
  • Familiarity with cloud platforms (AWS, Azure, GCP) and IaC (Terraform).
  • Experience with storage solutions (LVM, NFS, iSCSI, RAID).
  • Understanding of networking (TCP/IP, DNS, VPN, iptables/nftables).
  • Security-focused mindset (patching, vulnerability management, CIS benchmarks).
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