System Administrator Security Clearance

Jason Leff

Information Technology Specialist

************@*****.*** • 812-***-****

LinkedIn • Sierra Vista, AZ 85635

Dedicated and results-driven IT professional with extensive experience in system administration, application analysis, and operational support. Adept at resolving complex software and hardware issues, enhancing system performance, and ensuring data integrity. Proven track record of improving user satisfaction, system uptime, and operational efficiency. Experienced in security management, risk assessment, and documentation. Demonstrates strong problem-solving skills and the ability to support critical application upgrades and system maintenance.

Areas of Expertise

Security:

McAfee SIEM/EPO/NSM, FireEye CMS/ETP, SecureWorks, IDS/IPS, SSL, Juniper NetScreen/Palo Alto Networks firewall

Networking:

CISCO Routers/Switches, Virtualization, VMware, Wireshark/TCPView Packet Analysis, DNS Servers, Mail Server

Operating Systems:

Windows XP, Vista, 7, 8, 10, 11 Windows Server 2003, 2008, 2012, 2016, 2019 Linux

Core Competencies:

Application Analysis System Administration Tier 3 Support Troubleshooting Risk Management Framework (RMF) Security Management Vulnerability Management System Backups & Recovery User Support System Connectivity Operational Efficiency

Professional Experience

ISS, Sierra Vista, Az

Senior Application Analyst

2022 — 2024

Resolve complex Tier 3 software and hardware issues, providing detailed documentation for each solution. Assist in the development and maintenance of a lab environment to enhance troubleshooting capabilities. Contribute to the maintenance and issue resolution within the BMC Remedy system, streamlining processes for efficiency.

●Assisted in the successful sunsetting of the Remedy ticketing application, leading to improved system performance and user satisfaction.

●Established knowledge base for escalated issue resolution by documenting and researching application processes.

●Provided crucial support for Tier 2 during critical application upgrades, minimizing downtime and service disruptions.

General Dynamics Crane, In.,

System Administrator

2018 — 2022

Applied IA Vulnerability Issuance patches or configured changes for Vulnerability Management. Reported security violations and incidents to management after applying necessary patches or configuration changes, and reported completion to the Security Manager. Supported and maintained servers dedicated to the SCOM application.

●Assisted in developing and maintaining documentation for Risk Management Framework.

●Acted as Application Owner and Subject Matter Expert (SME) for SCOM (System Center Operations Manager).

Blue Cross Blue Shield of Arizona Phoenix, Location?

AZ Computer Operator III

2012 — 2018

Collaborated with Infrastructure team to ensure reliable system operation supporting business objectives and processes, resulting in improved uptime and operational efficiency. Conducted system backups, recovery, and patching duties, ensuring data integrity and system reliability. Assisted end users with connectivity issues and service desk requests, leading to improved user satisfaction and productivity.

●Enhanced overall system security and compliance by addressing security needs following life cycle procedures.

●Ensured seamless data flow and reduced downtime by monitoring and troubleshooting system connectivity across company infrastructure and with external vendors.

Additional Experience

AZ Systems Administrator Contracting for STG, INC. & Zenetex LLC. Sierra Vista, AZ

Systems Administrator Phoenix New Times Phoenix, AZ

Education

Bachelor of Science in Network and Communications Management

DeVry University, Addison, IL

Associate of Science in Computer Networking Management

Parkland College, Champaign, IL

Professional Development

Security+

Microsoft MCP Windows Server 2008r2 Network Infrastructure, Configuring

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