Senior Linux Engineer

iSystems Ltd · Karachi division, Pakistan

We are looking for a highly experienced Senior Linux Engineer to design, standardize, automate, and optimize enterprise-wide Linux platforms. This is a hands-on engineering role , focused on building reusable solutions and capabilities for Linux Operations and Infrastructure teams rather than performing day-to-day system administration.

Responsibilities

• Design and maintain enterprise-wide Linux platform standards and automated build solutions .
• Develop standardized OS and container golden images for bare-metal, VMware, OpenShift, and cloud environments.
• Manage and enhance Red Hat Satellite, Kickstart, PXE, DHCP, and Redfish for automated provisioning.
• Engineer and optimize RHEL platforms , including kernel, CPU, memory, I/O, and network/TCP performance.
• Define and implement Linux security, hardening, configuration, and compliance standards .
• Develop monitoring and observability solutions for Linux OS and Dell/HPE server infrastructure , integrating with Splunk, ELK, SIEM, and AppDynamics.
• Automate patching, firmware updates, configuration management, monitoring, and compliance using Ansible, Bash, and Python .
• Develop AI-driven solutions to improve Linux engineering and BAU operations.
• Support Linux platforms across OpenShift, VMware, Kubernetes, and cloud environments .
• Act as a Level 3 escalation point for critical incidents and lead root cause analysis.
• Collaborate with Infrastructure, DevOps, Security, Enterprise Architecture, and BAU teams to establish future-state Linux standards.
• Work with technology vendors and service partners to drive platform improvements and roadmap initiatives.
• Participate in a 24x7 on-call rotation for critical incidents.

Requirements

• Bachelor’s degree in Computer Science, IT, Engineering, or a related field , or equivalent experience.
• 12+ years of experience in Enterprise Linux , including at least 5 years in Senior Linux Administration and 5 years in Linux Engineering .
• Strong hands-on expertise with RHEL 6 onwards .
• Extensive experience with Red Hat Satellite Server , preferably Kickstart.
• Strong knowledge of PXE, DHCP, Redfish, and automated OS provisioning .
• Hands-on experience creating standardized OS/container images across on-premises, VMware, OpenShift, and cloud environments.
• Strong expertise in Red Hat OpenShift and experience with Kubernetes in cloud environments .
• Proficiency in Ansible, Bash, Python, Packer, and CI/CD/DevOps technologies .
• Strong understanding of DNS, NFS, NTP, SNMP, SMTP, Active Directory, TCP/IP, and Ethernet .
• Strong Linux troubleshooting, kernel analysis, performance tuning, and optimization skills.
• Experience with enterprise monitoring, logging, and SIEM solutions.
• Strong understanding of Linux security hardening and configuration management .
• RHCE certification required ; RHCA is a plus.
• AWS/Azure certifications are advantageous.