TISTA Science and Technology Corporation is hiring a Senior System Administrator

TISTA Science and Technology Corporation is hiring a Senior System Administrator to join our growing team. You’ll do meaningful, mission‑driven work that improves lives alongside teammates you trust and leaders who are transparent and supportive.

What You'll Do

• Manage the full lifecycle of RHEL servers, focusing on installation, configuration, maintenance, and security in a web environment.
• Install, configure, and maintain RHEL servers and virtual platforms on Cloud-AWS and Azure.
• Develop scripts (Bash, Python) or use Ansible to automate routine tasks, such as user management, software updates, and patching.
• Implement and manage security protocols, including SELinux, firewalls, access control lists (ACLs), and user/group permissions.
• Monitor system performance, resource utilization, and logs to ensure high availability, stability, and performance.
• Use Red Hat Satellite to manage repositories, content views, and software updates across the enterprise.
• Configure logical volumes, file systems, and manage backups to prevent data loss.
• Resolve complex server-level issues, conduct root cause analysis, and provide technical assistance.

What We're Looking For

• Expertise in RHEL 7/8/9 environments.
• Experience with Apache and Drupal support.
• Proficiency in command-line tools and shell scripting (Bash).
• Strong understanding of networking (TCP/IP, firewalls).
• Familiarity with automation tools (Ansible) and container technology (Podman/Docker).
• Bachelor’s degree in computer science, electronics engineering or related technical discipline and 5+ years’ work experience.
• Eight (8) years of additional relevant experience may be substituted for education (13 years total).
• The ability to pass a Tier 4/HIGH Background Investigation.

Technical Stack

• RHEL, Apache, Drupal, Bash, Python, Ansible, SELinux, AWS, Azure, Podman, Docker, Red Hat Satellite

Benefits & Compensation

• Salary: $52,730 to $72,500
• Above Industry Healthcare Benefits
• Remote Working Options
• Paid Time Off
• Training/Certification opportunities
• Healthcare Savings Account & Flexible Savings Account
• Paid Life Insurance
• Short-term & Long-term Disability
• 401K Match
• Professional development reimbursement
• Employee Assistance Program
• Paid Holidays
• Military Leave

Work Mode

This is a remote position open to candidates located in the Remote, USA.

We invest in your learning and internal mobility so you can build a career that keeps advancing. We’re proud to serve and hire Veterans, and we put people first in everything we do.