Need Linux Systems Engineer (L3)-Onsite Hybrid Role
Chandu A
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Need Linux Systems Engineer (L3)-Onsite Hybrid Role
Location: Irvine, CA
Duration: 12 Months
We are seeking an experienced L3 Systems Engineer with expertise in both Linux (RHEL/CentOS) and Oracle Solaris to support mission-critical financial applications. You will serve as the highest escalation point for complex platform issues, drive performance optimization, and lead automation initiatives.
We want all new Associates to succeed in their roles at Ensono. That's why we've outlined the job requirements below. To be considered for this role, it's important that you meet all Required Qualifications. If you do not meet all of the Preferred Qualifications, we still encourage you to apply.
Key Responsibilities
Serve as L3 escalation point for complex Linux and Solaris infrastructure issues
Perform deep-dive root cause analysis (RCA) for system failures and performance issues
Lead performance tuning and capacity planning for critical systems
Administer and maintain RHEL/CentOS and Oracle Solaris 10/11 environments
Develop automation scripts (Shell, Python, Ansible) for provisioning, monitoring, and maintenance
Manage Solaris Zones, LDOMs, and Linux virtualization (KVM/VMware)
Configure and manage ZFS, LVM, VxFS file systems
Execute system patching, upgrades, and security hardening
Participate in Major Incident bridges and coordinate with vendors (Oracle, Red Hat)
Mentor L1/L2 engineers and conduct knowledge transfer sessions
Create and maintain technical documentation, SOPs, and runbooks
Required Skills
Linux (RHEL/CentOS):
Expert in RHEL 7/8/9 administration, kernel tuning, and troubleshooting
Strong experience with LVM, ext4, XFS, NFS, systemd
Proficient in performance analysis (sar, vmstat, iostat, strace)
Solaris (Oracle Solaris 10/11):
Expert in Solaris administration, SMF, and ZFS
Strong experience with Solaris Zones, LDOMs
Proficient in performance analysis (DTrace, mdb, prstat)
Common:
Expert Shell scripting (Bash/Ksh); proficient in Python
Experience with Ansible or similar automation tools
Strong networking skills (TCP/IP, DNS, NFS, NIS)
Experience with enterprise monitoring tools (Splunk, Grafana, Nagios)
Solid understanding of ITSM processes (Incident, Problem, Change)
Preferred Qualifications
RHCE or RHCSA certification
Oracle Certified Professional – Solaris
Experience with clustering (Solaris Cluster, Veritas, Pacemaker)
Experience with SAN/NAS storage and enterprise backup solutions
Banking or financial services domain experience
ITIL Foundation certification
Education
Bachelor’s degree in computer science, Information Technology, or equivalent
On-Call: Participation in 24x7 on-call rotation for
critical escalations