Linux Administrator

Holtec International • Winslow Township, NJ

7d • Hybrid

About The Position

The Linux System Administrator is responsible to serve as the primary resource for the management and administration of all Linux assets at Holtec, including J2EE-based application servers, Oracle database servers, and high-performance computing clusters.

Requirements

• Bachelor’s degree of Computer Science, Information Technology, or a related field.
• Pursuant to NN-801/U-NNPI requirements, applicants must be U.S. citizens.
• Minimum 8-10 years of experience in Linux system administration, including management of enterprise-level applications and high-performance clusters.
• Strong experience managing virtualization platforms such as OpenShift and VMware.
• Knowledge of high-availability and disaster recovery strategies.
• Experience managing and configuring enterprise application and middleware systems.
• Strong problem-solving and communication skills.
• Experience with RHEL 7/8/9 and AI distributions.
• Experience working with F5 load balancers.
• Cloud experience (Azure or AWS).
• U.S. Citizenship required for this position.

Responsibilities

• Ensure all Linux systems adhere to IT compliance and security controls through proper configuration, patching, and maintenance, with strong adherence to Linux security best practices.
• Maintain system performance and ensure high availability.
• Develop, implement, and execute disaster recovery plans and procedures.
• Perform regular system monitoring and verify the integrity and availability of hardware, server resources, systems, and key processes.
• Install and configure physical and virtual servers to support AI workloads.
• Administer and manage J2EE-based applications on Linux platforms.
• Administer and manage high-performance clusters running Linux operating systems.
• Support COTS and internally developed applications.
• Monitor Oracle database availability, including RMAN backups and data recovery procedures.
• Implement high-availability strategies for Linux servers and virtualization platforms.
• Collaborate with IT staff to ensure proper network segmentation and security controls, including iSCSI SAN connectivity.
• Maintain strong knowledge of storage solutions and subsystems, including multipathing, LVM, XFS, and udev rules.
• Develop and maintain automation scripts using Python or Bash.
• Leverage configuration management and provisioning tools (e.g., Terraform, Ansible) to automate deployments and maintain system consistency.

Benefits

• Industry‑leading medical, dental, and vision coverage with a generous employer premium contribution and Day 1 eligibility!
• FLEX Program – Hybrid work opportunities available for eligible roles, where business needs and role requirements allow
• 401(k) retirement plan with up to a 5% company match and immediate vesting to support long‑term financial security
• Paid time off and 11 paid holidays to support rest, balance, and recharge
• Wellness program offering rewards for participation in company‑supported health initiatives
• Commuter benefits supporting mass transit and commuter parking options
• Company‑paid life and AD&D insurance for added peace of mind
• Education assistance to support continued education and professional growth
• Employee support and voluntary benefits, including an Employee Assistance Program and optional coverage such as disability, legal, identity theft, and insurance programs

What This Job Offers

• Job Type: Full-time
• Career Level: Senior