Justin Fleischman
Cincinnati
Summary
Linux-focused engineer with hands-on experience in enterprise environments, specializing in RHEL systems administration, patch management, automation, and security operations. Experienced in firewall policy management, disaster recovery validation, and infrastructure optimization. Proven ability to improve system stability, strengthen security posture, and support production environments at scale
Overview
2
2
years of professional experience
1
1
Certification
Work History
Network & Linux Engineer Co-op
8451
Cincinnati
01.2026 - Current
- Replaced end-of-life (EOL) switches with Aruba switches across multiple floors in 8451 office, enhancing network reliability through initial configuration and deployment.
- Supported Palo Alto firewall management, including rule creation, troubleshooting, and policy updates.
- Assisted with Linux patching across production and non-production environments, ensuring system stability and security compliance.
- Contributed to RHEL Satellite research and upgrade efforts (6.16 → 6.17), facilitating lifecycle management and automation improvements.
- Led a Pod-Consolidation Analysis project to evaluate and consolidate pod usage across data centers, improving resource utilization and saving costs.
- Conducted ZFS storage audit to assess capacity, performance, and redundancy across environments, identifying optimization opportunities to enhance storage efficiency.
- Performed Cristie BMR (Bare Metal Recovery) testing to validate backup integrity and disaster recovery readiness.
IT Systems Support Co-op
Carestar
Cincinnati
05.2025 - 08.2025
- Resolved Tier 1 help desk tickets, promptly addressing hardware, software, and account issues to enhance user experience.
- Managed mobile devices through MDM platforms, including setup, updates, and troubleshooting.
- Delivered on-call technical support for company employees, minimizing downtime and ensuring swift resolution of urgent issues.
- Executed laptop imaging and deployment for new hires, ensuring compliance with company standards.
Linux Engineer Co-op
8451
Cincinnati
08.2024 - 12.2024
- Performed server builds of RHEL VMs and physical servers using VMware/Kickstart.
- Used LVM to format storage volumes on Linux servers.
- Managed on-premise enterprise storage solutions using Dell Isilon and Oracle ZFS, ensuring optimal performance and reliability.
- Partitioned new disks on RHEL servers using the fdisk/parted utility.
- Controlled Sudo access for production and non-production Linux servers in 8451 environments, enhancing security and compliance.
- Configured and monitored quota thresholds on Dell Isilon and Oracle ZFS storage arrays to maintain efficient resource allocation.
- Completed tickets and change tasks/requests using Jira Software and iService.
- Scripted repetitive tasks using Ansible and BASH.
- Automated server configuration with Ansible Tower.
Education
Bachelor of Science - Cybersecurity
University of Cincinnati
Cincinnati, OH05-2027
Bachelor of Science - Information Technology (Networking & Systems Admin
University of Cincinnati
Cincinnati, OH05-2027
Skills
- Red Hat Ansible Automation
- Dell Isilon Storage & ZFS Storage
- Vmware
- LVM Management
- SELINUX
- Active Directory
- Palo Alto Firewall
- Jira
- Snort
- Git Version Control
- Cohesity
- Confluence
Certification
- CompTIA Linux+, https://www.credly.com/badges/41ec9a-43cc-903f83882b52f477/public_url
- CompTIA Security+, https://www.credly.com/badges/506e-462e-8748a52f62e3764e/public_url
- Red Hat Certified System Administrator (RHCSA), https://www.credly.com/badges/a52f-4aa0-9b806ba28ba09acf/linked_in_profile
Timeline
Network & Linux Engineer Co-op
8451
01.2026 - Current
IT Systems Support Co-op
Carestar
05.2025 - 08.2025
Linux Engineer Co-op
8451
08.2024 - 12.2024
Bachelor of Science - Cybersecurity
University of Cincinnati
Bachelor of Science - Information Technology (Networking & Systems Admin
University of Cincinnati