Linux Systems Administrator

About the role

Linux Systems Administrator position based in Austin, TX, working onsite. The role involves managing and administering Linux (RHEL/Rocky) virtual machines across multi-site data center environments; operating and maintaining the OpenShift container platform; supporting AVI Vantage load balancer operations; developing and maintaining Ansible playbooks for infrastructure automation; fulfilling daily infrastructure requests; managing hardware lifecycle activities; deploying and maintaining security agents; managing SSL certificate lifecycle; supporting FreeIPA and Keycloak identity services; coordinating with vulnerability management to patch or mitigate findings; and participating in on-call rotation for production infrastructure incidents.

Responsibilities

• Manage and administer Linux (RHEL/Rocky) virtual machines across multi-site data center environments
• Operate and maintain OpenShift container platform (user management, workload troubleshooting, cluster health)
• Support AVI Vantage load balancer operations (virtual service configuration, pool management, SSL binding, health monitors)
• Develop and maintain Ansible playbooks for infrastructure automation (user management, security agent deployment, OS patching, SSH hardening)
• Fulfill daily infrastructure requests (VM provisioning, resource augmentation, access provisioning, troubleshooting)
• Manage hardware lifecycle activities (Dell iDRAC, decommission coordination, EOSL tracking)
• Deploy and maintain security agents across all hosts
• Manage SSL certificate lifecycle (renewals, installation, expiration tracking)
• Support FreeIPA and Keycloak identity services (user provisioning, group management, authentication troubleshooting)
• Coordinate with vulnerability management to patch or mitigate findings on data center hosts
• Participate in on-call rotation for production infrastructure incidents

Requirements

• 5+ years of experience in enterprise Linux systems administration (RHEL 7/8/9, Rocky Linux)
• Strong working knowledge of Ansible for infrastructure automation (playbook development, roles, inventories, vault)
• Experience with container platforms - OpenShift or Kubernetes (cluster operations, user management, pod troubleshooting)
• Experience with application delivery controllers / load balancers (AVI Vantage preferred, F5 BIG-IP acceptable)
• Hands-on experience with Dell PowerEdge server hardware management (iDRAC, OpenManage, BIOS/firmware updates)
• Familiarity with virtualization platforms and VM lifecycle management (ManageIQ, VMware, or similar)
• Experience with identity management systems (FreeIPA, LDAP, Keycloak, or Active Directory)
• Understanding of SSL/TLS certificate management and PKI concepts
• Proficiency with Git for version control - comfortable with branching, merge requests, and collaborative workflows (GitLab preferred)
• Experience working in multi-site data center environments
• Foundational knowledge of cloud platforms (AWS or GCP) - understanding of core services (compute, networking, storage, IAM) and how on-prem infrastructure maps to cloud equivalents
• Strong troubleshooting skills across network, OS, and application layers
• Ability to work independently, manage a queue of requests, and prioritize effectively

Qualifications

• Experience with AVI Vantage specifically (virtual services, pools, health monitors)
• Experience with Splunk Forwarder deployment and log pipeline configuration
• Exposure to vulnerability management workflows
• Experience with Jira for work tracking and request management
• Familiarity with hardware lifecycle planning (EOSL tracking, refresh coordination, capacity planning)
• Python scripting for operational automation and reporting
• Understanding of network fundamentals (VLANs, routing, firewall rules, DNS)
• Experience supporting Cisco UCS or Dell EMC Unity storage platforms
• Hands-on experience migrating workloads from on-prem to AWS or GCP (lift-and-shift or re-platform)
• Familiarity with Infrastructure as Code for cloud (Terraform, CloudFormation, or Deployment Manager)
• Experience with cloud-native container orchestration (EKS, GKE) in addition to on-prem OpenShift
• EnableSkinIGERscertifications (Associate level or higher)