Meric Sheehan

Summary

Experienced IT professional with expertise in Linux and Windows administration, cloud computing (AWS, Azure), virtualization, networking, and security. Currently serving as System Administrator Team Lead, overseeing teams and complex projects. Personal project of an AWS-hosted skills-testing app using Kubernetes and Docker backend. Skilled in Python, bash, PowerShell, and SQL, with a focus on secure, scalable solutions. Targeting specialized roles in cloud engineering, DevOps.

Skills

• Operating Systems: Linux, Windows Server.
• Scripting & Programming: PowerShell, bash, Python.
• Virtualization: VMware, BMC Client Management, hypervisors, Docker, Kubernetes.
• Networking: Tunneling (DMVPN, Flex VPN), firewall administration, Cisco routers/switches.
• Security: Nessus, Security Center, EPO, Fail2ban, NGINX security implementations.
• Cloud & Tools: Azure, AWS, Power BI.
• Leadership: Team management, project coordination, client-facing solutions.

Professional Experience

System Administrator Team Lead
DirectViz — 12/2022 – Present

• Lead a team managing Windows and Linux systems in an Azure environment, ensuring DoD compliance.
• Performed Linux administration tasks including troubleshooting and terminal-based configuration.
• Set up Power BI data gateways and connectors for visualizations.
• Administered EPO and applied STIGs for enhanced security.
• Maintained SAS on Linux, troubleshot IIS and Tomcat servers.
• Coordinated complex projects for productivity and reliability.

Systems Engineer
American College of Radiology — Reston, VA — 07/2021 – 12/2022

• Maintained hybrid environment with strong security focus.
• Handled patch management, monitoring, and troubleshooting.
• Worked within ticketing systems for task management.
• Secured and maintained SQL Server environments.
• Interfaced with SOC team for rapid issue resolution.

Systems Administrator
ManTech — APG, MD — 02/2021 – 07/2021

• Worked with Windows Server, CentOS/Red Hat, Palo Alto firewalls, Cisco networking equipment.
• Supported agile development in secure environments.
• Managed Linux-based high-performance computing platforms.
• Maintained RPM repositories and wrote SQL scripts.

System Administrator
USMC — USA — 04/2017 – 02/2021

• Built and managed secure desktop/server Windows images.
• Deployed and maintained DMVPN connections.
• Applied security patches and managed service packs.
• Planned and deployed networks and services.
• Managed Call Manager and provider integrations.

Projects

• Skills-Testing App (2024 – Present):
  • Designed and coded a 60k-line AWS-hosted app for IT skills testing.
  • Deployed via Kubernetes and Docker; used Guacamole for session access.
  • Integrated NGINX, Fail2ban, CloudWatch for security and observability.
• SnailChat:
  • Developed a Dockerized, encrypted peer-to-peer Python chat app.

Certifications

• Security+
• AZ-104
• AWS Cloud Practitioner
• ESS ePO Administrator 201, 301

Other

Clearance: Active Secret Clearance