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Concentra · 1 day ago

Supervisor, Linux & Unix Systems Engineer

US-TX-Addison

Full-time

Onsite

Senior Level

7+ years exp

Concentra is recognized as the nation’s leading occupational health care company. The Linux & Unix Systems Engineering Supervisor leads a team responsible for supporting and modernizing RHEL and Solaris platforms while balancing people leadership with hands-on engineering to ensure reliability and operational excellence.

Health CareHospitalMedicalPrimary and Urgent CareTherapeuticsWellness

Responsibilities

Supervise 2–4 engineers (Linux/Unix Systems Engineer I–III); conduct regular 1:1s, coaching,and performance feedback

Plan and assign work based on skill level; set team goals, priorities, and deliverable timelines

Lead hiring/onboarding for the team; create individualized development plans (e.g., RHCSA →RHCE → RHCA)

Mentor Engineer I in foundational skills; guide Engineer II in project ownership; review Engineer III designs as technical lead

Own operational KPIs: patch & hardening compliance, SLA adherence, backup verification, configuration drift, and automation coverage

Manage on-call readiness, rotation, and escalation paths; lead post-incident RCAs and drive corrective actions

Ensure audit readiness (SOX, HIPAA, PCI) and coordinate evidence with Security/Compliance

Oversee and participate in design and deployment of RHEL and Solaris platforms across physical and virtualized environments (AWS; Azure; VMware; LDOMs/Zones)

Support container development and administration (such as Docker, Podman; Kubernetes/OpenShift environments where applicable)

Guide HA cluster architectures (e.g., Pacemaker/Corosync) and enterprise storage (LVM, ZFS, Stratis, Ceph Storage, or other enterprise storage technologies)

Review and approve Configuration-as-Code (e.g., Ansible) and Infrastructure-as-Code (e.g., Terraform) patterns, author critical modules or reference templates when necessary

Oversee standard OS images (Kickstart, cloud-init) and repository/lifecycle management; ensure consistency across environments

Direct advanced troubleshooting during complex outages; partner with Principal/Staff engineers for architectural escalations

Enforce OS hardening standards (DISA STIG, CIS benchmarks) and vulnerability remediation processes

Maintain platform standards, SOPs, and runbooks; ensure documentation quality and currency

Ensure change control quality and provide approvals for production changes

Validate platform readiness for releases and new deployments

Represent the team in CAB and Architecture Review Board; communicate impacts/risks to stakeholders

Coordinate work with DevOps, Security, DBAs, Virtual Infrastructure, Networking, and Application Development teams

Provide input on tooling, licensing, and training budgets relevant to Linux/Unix operations

Qualification

RHEL 8/9Solaris 11Configuration-as-CodeAutomation (Ansible)Infrastructure-as-Code (Terraform)Red Hat Certified Engineer (RHCE)ITIL FoundationVirtualization (VMware/KVM)Observability platformsService MentalityTeam LeadershipCommunication SkillsAttention to DetailFlexibility

Required

Bachelor's Degree in Computer Engineering, Computer Science, Information Technology from an accredited college or university

7+ years of relevant Linux/Unix systems engineering experience (RHEL/Solaris)

1–3 years of team leadership in a technical capacity (lead engineer, supervisor, or similar), preferably in small teams

Mastery of RHEL 8/9; strong Solaris 11 experience (Zones, LDOMs)

Proven experience with multi-site operations, virtualization (VMware/KVM), and identity integration (SSSD/AD/LDAP/Kerberos)

Demonstrated expertise of Configuration-as-Code (Cac), automation (e.g., Ansible) and IaC (Terraform)

Experience supporting audits (SOX, HIPAA, PCI) and driving RCAs and continuous improvement initiatives

Familiarity with observability platforms (e.g., Prometheus, Splunk, Dynatrace, Grafana, Datadog)

Supervise 2–4 engineers (Linux/Unix Systems Engineer I–III); conduct regular 1:1s, coaching, and performance feedback