Onshore Senior Unix Linux SME

Ampcus Inc. is a certified global provider of a broad range of Technology and Business consulting services. We are in search of a highly motivated candidate to join our talented Team. Job Title: Onshore Senior Unix Linux SME Location(s): Chicago, IL (Remote) Position Summary We are seeking an experienced Senior Linux/Unix Subject Matter Expert (SME) to support, modernize, and transform large-scale, mission-critical enterprise infrastructure. The ideal candidate will have extensive experience managing enterprise Linux/Unix environments, leading critical incident response, driving infrastructure modernization, and supporting hybrid cloud platforms across large-scale environments with 20,000+ servers. Key Responsibilities Critical Incident & Operations Management Serve as the SME for P1/P2 incident response, root cause analysis, and rapid service restoration. Lead incident bridges, post-incident reviews, and implement preventive measures. Improve incident management processes, observability, and overall system reliability. Linux / Unix Platform Engineering Administer and support the complete RHEL lifecycle, including upgrades, patching, and end-of-life planning. Implement CIS-compliant operating system hardening and maintain security compliance. Develop and maintain automation using Chef, Ansible, Bash, KornShell, and Python. Build and manage RHEL golden images and cloud deployment templates. Infrastructure Modernization Lead migrations from RHEL 7 to RHEL 8. Drive migrations from legacy Unix platforms to Linux and Azure environments. Support application and database modernization initiatives. Contribute to datacenter consolidation and cloud transformation projects. Hybrid Cloud & Virtualization Support VMware, Nutanix, Dell VxRail, Azure IaaS, and Azure VMware Solution environments. Design and manage hybrid cloud architectures. Perform physical-to-virtual (P2V) migrations and optimize virtualized infrastructure. Enterprise Platforms Support enterprise applications including SAP, Oracle Database, Teamcenter, and HPC platforms. Administer Unix platforms including AIX,

HP-UX

, and Solaris. Manage IBM NIM, VIOS, HMC, GPFS, NFS, iSCSI, and Fibre Channel storage environments. Disaster Recovery & High Availability Design, implement, and validate disaster recovery and high availability solutions. Support DR planning for enterprise platforms including Oracle and Teamcenter. Conduct disaster recovery exercises while ensuring RTO/RPO compliance. Infrastructure Services & Security Support enterprise infrastructure services including DNS, NTP, Satellite, and PXE. Manage monitoring and security platforms including Splunk, Rapid7, CrowdStrike, Qualys, Microsoft Defender, and Nagios. Perform vulnerability remediation, patch management, and security compliance activities. Required Qualifications 7-10 years of Linux/Unix system administration and engineering experience. Experience supporting enterprise environments with 10,000+ servers. Extensive experience handling P1/P2 incidents and performing root cause analysis. Strong expertise with Red Hat Enterprise Linux, SUSE Linux, Ubuntu, AIX, HP-UX, and Solaris. Proven experience migrating legacy Unix workloads to Linux and cloud platforms. Strong experience with enterprise automation and configuration management. Technical Skills Operating Systems Red Hat Enterprise Linux (RHEL) SUSE Linux Ubuntu AIX HP-UX Solaris Virtualization & Cloud VMware vSphere NSX vSAN Nutanix Dell VxRail Microsoft Azure (IaaS, Azure VMware Solution) Basic AWS knowledge Automation & DevOps Chef Ansible Terraform Bash KornShell Python Docker Kubernetes (working knowledge) Storage & Infrastructure GPFS NFS iSCSI Fibre Channel LVM Veritas Volume Manager DNS NTP PXE Monitoring & Security Splunk Nagios Rapid7 CrowdStrike Qualys Microsoft Defender CIS Hardening Vulnerability Management Enterprise Platforms

IBM NIM

VIOS HMC Active Directory Integration Samba Satellite RPM-based Linux systems SAP Oracle Database Teamcenter Required Certifications Red Hat Certified System Administrator (RHCSA) Red Hat Certified Engineer (RHCE) Preferred Certifications VMware Certified Professional - Data Center Virtualization (2023) CompTIA Security+ Microsoft Certified: Azure Fundamentals Preferred Experience Experience supporting enterprise environments exceeding 20,000 servers. Azure Skytap migration experience. Platform One exposure. SLURM workload manager experience. IBM WebSphere ecosystem experience. Soft Skills Excellent leadership and stakeholder management abilities. Strong communication skills during high-priority incidents. Ability to lead cross-functional technical initiatives. Continuous improvement mindset with a focus on automation, stability, and operational excellence. Success Metrics Reduced incident recurrence and Mean Time to Resolution (MTTR). Successful delivery of infrastructure modernization initiatives. Improved security compliance and vulnerability remediation. Increased system availability, performance, and operational reliability. Ampcus is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, protected veterans or individuals with disabilities. #J-18808-Ljbffr Ampcus