Sr. Unix Administrator (AIX / RHEL & Kubernetes) | Contract | Harrisburg, PA Local Or Near by candidates Only.

Job Title: Sr. Unix Administrator (AIX / RHEL & Kubernetes)

Location: Harrisburg, PA (Hybrid minimum 1 day onsite per week; must be flexible to work onsite up to 5 days/week as required)
Engagement: Contract to Hire
Work Hours: 8:00 AM 5:00 PM
On-Call Rotation: Required
Start Date: ASAP
Eligibility: Only PA residents or local candidates will be considered

Job Description

We are seeking a Senior Unix Administrator with strong experience in Enterprise Linux (AIX/RHEL) and Kubernetes to support and enhance complex, mission-critical infrastructure environments. This is a hands-on, senior-level role responsible for the architecture, design, deployment, and administration of Unix and containerized platforms across on-premises data centers and AWS cloud environments.

The ideal candidate will have deep experience managing large-scale Unix systems, Kubernetes orchestration, virtualization technologies, and enterprise hardware platforms (IBM & EMC), with a strong focus on availability, security, and disaster recovery. The role requires close collaboration with infrastructure, application, and DevOps teams.

Key Responsibilities

• Design, administer, and support Enterprise Unix/Linux environments (AIX, RHEL)

• Implement, manage, and troubleshoot Kubernetes clusters in on-prem and cloud environments

• Create, maintain, and debug Kubernetes manifest files (YAML)

• Develop, maintain, and troubleshoot Helm charts

• Support CI/CD pipelines and infrastructure automation initiatives

• Manage source control using Git

• Provide on-call support and participate in incident response and root cause analysis

• Support infrastructure hosted on AWS and physical data centers

• Collaborate with cross-functional teams on system design, migrations, and deployments

Required Skills (Must-Have)

• Strong hands-on experience with AIX and RHEL administration

• Proven experience administering Kubernetes environments

• Hands-on experience with Kubernetes manifests (YAML)

• Experience creating and maintaining Helm charts

• Solid understanding of CI/CD concepts and tools

• Experience using Git for source control

• Ability to work in production environments with on-call responsibility

Preferred / Nice-to-Have Skills

• Strong knowledge of networking concepts (DNS, load balancers, firewalls, gateways, proxies)

• Experience troubleshooting Java VM and Apache Tomcat issues

• Experience with PostgreSQL deployment and administration

• Familiarity with Gradle or Maven

• Experience deploying containerized applications on:

  • AWS (EKS / ECS)

  • Azure (AKS / ACI)

• Experience with IBM & EMC hardware and disaster recovery solutions

Additional Requirements

• Must be a Local to Harrisburg, PA Or Near by candidate.

• Must be flexible for increased onsite presence if required

• Must be available for on-call rotation