Linux Engineer - System Administration

Position Overview :

The Linux Engineer (5-7 years) is responsible for designing, implementing, maintaining, and troubleshooting enterprise- level Linux infrastructure. The role requires strong technical expertise in Linux operating systems, automation, system performance optimization, and infrastructure reliability. The engineer will work closely with cross- functional teams to ensure stable, secure, and scalable operations.

Key Responsibilities :

Linux System Administration :

- Install, configure, and manage Linux servers (RHEL, CentOS, Ubuntu, SUSE).

- Perform patching, kernel upgrades, and OS hardening.

- Manage file systems, LVM, storage, RAID, and system backups.

- Troubleshoot system- level issues related to CPU, memory, disk, and network.

Automation & Scripting :

- Automate routine tasks using Bash, Python, or Shell scripting.

- Develop and maintain automation scripts for deployments, monitoring, and health checks.

- Work with configuration management tools (Ansible, Puppet, Chef).

Infrastructure Monitoring & Optimization :

- Monitor system health, performance, and capacity.

- Implement proactive measures to improve system reliability and reduce downtime.

- Manage enterprise monitoring tools (Nagios, Zabbix, Dynatrace, Prometheus, Grafana).

Security & Compliance :

- Perform OS hardening according to security best practices.

- Manage firewalls, SELinux, user access, and privileges.

- Assist with internal/external audits and ensure compliance (ISO, SOC, ITIL).

Virtualization & Cloud :

- Work on VMs using VMware, Hyper- V, or KVM.

- Support cloud environments (AWS, Azure, Google Cloud) - EC2, IAM, Storage, Networking.

- Handle migration of workloads from on- prem to cloud or vice- versa.

Incident, Problem & Change Management :

- Handle high- priority incidents and perform root cause analysis.

- Participate in on- call rotations for production support.

- Prepare change documents and perform planned maintenance activities.

Collaboration & Documentation :

- Work closely with network, DBA, storage, and application teams.

- Document SOPs, deployment guides, technical diagrams, and troubleshooting processes.

- Provide technical guidance to junior engineers.

Required Skills & Experience :

- 5-7 years of hands- on Linux administration experience.

- Strong expertise in - RHEL/CentOS/Ubuntu.

- Excellent skills in - Bash/Shell scripting.

- Experience with automation tools (Ansible preferred).

- Good understanding of- TCP/IP Networking, DNS, NFS, SSH, LDAP, DHCP.

- Strong troubleshooting and performance tuning skills.

- Hands- on knowledge of- VMware/Hyper- V/KVM.

- Familiarity with- cloud platforms- (AWS/Azure/GCP).

- Experience with- backup tools- (NetBackup, Veeam, Commvault).

- Understanding of- ITIL processes.

Preferred Qualifications :

- Red Hat certifications (RHCSA, RHCE).

- Experience with containers (Docker, Kubernetes).

- Exposure to CI/CD tools (Jenkins, GitLab CI, Azure DevOps).

- Knowledge of Infrastructure- as- Code (Terraform).

Soft Skills :

- Strong analytical and problem- solving ability.

- Effective communication and stakeholder collaboration.

- Ability to work independently and lead small initiatives.

- Customer- centric mindset and focus on service quality.