Sr. Systems Engineer - Linux

Location - San Diego, CA

We are seeking an experienced Senior Systems Engineer to join our team. You will be responsible for managing and automating enterprise Linux/Unix platforms across VMware-based on-prem and hybrid environments. Ensures high availability, security compliance, and operational stability of mission-critical banking applications. You will also act as an L2/L3 System Engineer resource, working across IT Infrastructure teams in a regulated banking environment.

• Manage Linux/Unix systems (build, patching, performance tuning)
• Ensure system stability, security hardening, and uptime
• Support application teams with OS and middleware dependencies
• Participate in Major Incident (P1/P2) management and RCA
• Drive automation to reduce manual recovery efforts like Bash / Python.

• Develop and maintain Puppet modules/manifests
• Automate server provisioning, patching, and application deployment
• Enforce configuration standardization and drift remediation

• Administer vSphere, ESXi, and vCenter
• Provision and manage Unix/Linux VMs and templates
• Support capacity planning, performance tuning, and DR (Zerto)

• Ensure adherence to SOX, FFIEC, and internal security policies
• Perform patching, vulnerability remediation, and access control
• Maintain audit-ready documentation and compliance posture

• Support enterprise backup and DR solutions
• Participate in DR drills and failover testing
• Ensure high availability and no single point of failure

• Execute changes via Service Now (CAB, risk, rollback)
• Maintain runbooks, SOPs, and documentation.

• 5+ years of experience in Linux Administration
• Strong expertise in Puppet (configuration management)
• Hands-on experience with VMware (vSphere, ESXi, vCenter)
• Experience in production support / incident management
• Scripting:
  Bash / Python
• Knowledge of networking (TCP/IP, DNS) and storage systems
• Experience with ITSM (incident/change management)