L3 Server Infrastructure Lead (Unix/Linux)
Core
Senior infrastructure leadership role responsible for the stability, security, availability, and performance of a global Unix/Linux server estate.
Role type
Senior IC server infrastructure lead (Unix/Linux)
Builds
Global Unix/Linux server estate stability and security
Domain
Enterprise IT infrastructure
Deliverable
infrastructure
Required skills
L3 Unix/Linux troubleshooting, enterprise OS administration (RHEL, Ubuntu, AIX, Solaris), security hardening (CIS), performance optimization, automation scripting (Shell, Python, Ansible), incident and problem management, team leadership
Preferred skills
RHCSA/RHCE certification, ITSM platform experience (ServiceNow), cloud/virtualization knowledge (VMware, AWS, Azure) (via careerplan.io/jobs/c34755c5-7e05-4b9f-999b-90532b9f6d24-l3-server-infrastructure-lead-unixlinux-at-jobgether)
Technologies
RHEL, Ubuntu, AIX, Solaris, Shell, Python, Ansible, LVM, NFS, SSH, DNS, ServiceNow, VMware, AWS, Azure
Responsibilities
Provide expert L3 technical support for P1–P4 incidents; Lead and guide L1/L2 Unix/Linux operations teams; Administer and troubleshoot enterprise RHEL, Ubuntu, AIX, and Solaris environments; Own OS patching, vulnerability remediation, and security baseline improvements; Monitor and optimize system performance and capacity; Support server provisioning, lifecycle management, and upgrades; Lead problem management and root cause analysis; Develop operational runbooks and technical documentation; Identify and implement automation solutions; Collaborate with Security, Database, Storage, Network, Cloud, and Application teams.
Seniority
Senior, hands-on IC with leadership responsibilities