Unix/Linux L3 Specialist

Job Role: Unix/Linux L3 Specialist

Location: Alpharetta, GA – Onsite (Hybrid: 3 days/week, rotational including weekends)

Duration: Long-Term Contract

Job Summary

Morgan Stanley is seeking a highly skilled Unix/Linux L3 Specialist to join the Critical Infrastructure (CritInfra) Support Team. This role supports the firm’s most mission-critical Unix/Linux platforms (“Oxygen Systems”) in a follow-the-sun SRE support model.

The L3 Specialist will handle the most complex production issues, often requiring deep system-level troubleshooting, architectural analysis, source-code level fixes, and close collaboration with engineering teams and external vendors. This position demands expert-level Unix/Linux knowledge, advanced TCP/IP expertise, and the ability to operate effectively in high-pressure, enterprise-scale environments.

Key Responsibilities

•         Provide Site Reliability Engineering (SRE) support for the firm’s critical Unix/Linux infrastructure in a global follow-the-sun model.

•         Act as L3 escalation support, resolving the most complex and high-impact production incidents.

•         Participate in rotational on-call support, weekend project work, and outage management.

•         Perform proactive health, hygiene, risk, and compliance tasks to ensure operational stability and regulatory adherence.

•         Collaborate with engineering teams to test, certify, and deploy new hardware and software platforms.

•         Support onboarding of new Unix/Linux assets for growth initiatives and data center build-outs.

•         Engage directly with internal clients and stakeholders during incident and outage scenarios to provide expert technical guidance.

•         Lead or contribute to incident, problem, and change management processes, ensuring root-cause analysis and permanent fixes.

•         Implement automation and “fix once, deploy everywhere” solutions to improve reliability and efficiency.

•         Maintain and enhance system monitoring, alerting, and reporting capabilities.

•         Ensure production environments meet security, vulnerability, and patching standards.

•         Coordinate effectively with global teams, vendors, and infrastructure partners.

•         Perform other duties as assigned.

Required Skills & Experience

•         6+ years of enterprise-level Unix/Linux administration experience in large, distributed environments.

•         Expert-level knowledge of Linux (Red Hat Enterprise Linux) with working knowledge of Solaris.

•         Detailed and in-depth knowledge of TCP/IP and associated technologies including NFS, NIS, DNS, and DHCP.

•         Strong experience with Unix/Linux system monitoring, reporting, and performance tuning.

•         Hands-on expertise with server firmware upgrades and hardware lifecycle management.

•         Deep understanding of NTP, time synchronization, and time-keeping technologies.

•         Proven experience with vulnerability assessments, remediation, and server patching.

•         Programming/scripting experience using Shell, Perl, and/or Python.

•         Strong troubleshooting skills with the ability to resolve complex, high-severity issues under pressure.

•         Experience with incident, change, and problem management, including documentation and reporting.

•         Excellent verbal and written communication skills with the ability to work in a global, matrixed team environment.

•         Strong organizational skills with the ability to manage multiple priorities simultaneously.

Desired Skills & Certifications

•         Red Hat Enterprise Linux (RHEL) certification.

•         Experience with Infoblox DDI (DNS, DHCP, IPAM) solutions.

•         Knowledge of Veritas Cluster Server or similar high-availability solutions.

•         Experience with Ansible, OpenShift, and Kubernetes.

•         Knowledge of Veritas Volume Manager.

•         Prior experience supporting financial services or highly regulated environments.