Rebecca Clark
Stella,MO
Summary
Detail-oriented Systems Administrator with over 5 years of experience in enterprise IT operations across mainframe and distributed environments. Skilled in batch processing, incident resolution, and tier 2 support in 24/7 global operations. Expertise includes Active Directory, ServiceNow, systems monitoring, and root cause analysis, contributing to improved system reliability and performance.
Overview
9
9
years of professional experience
1
1
Certification
Work History
Systems Administrator
Walmart
10.2024 - Current
- Provide Tier 2 support in a 24/7 global operations environment, supporting enterprise systems used across Walmart and Sam’s Club
- Monitor and manage batch job processing across mainframe and distributed systems, ensuring SLA compliance and operational continuity
- Support payroll processing systems across the U.S., Canada, and Puerto Rico, ensuring accurate and timely transaction processing
- Manage and resolve incidents using ServiceNow and Remedy, ensuring proper escalation, documentation, and closure
- Administer user accounts and permissions in Active Directory for enterprise users
- Resolved 70% of batch job failures independently, minimizing downtime and mitigating business impact
- Collaborated with development, infrastructure, and operations teams to troubleshoot issues and implement sustainable solutions
- Conducted root cause analysis on recurring incidents, leading to process improvements and enhanced system stability
Information Technology Specialist
United States Army
01.2017 - 01.2023
- Provided Tier 1 and Tier 2 IT support for hardware, software, and network issues in high-tempo environments, enhancing overall operational efficiency
- Troubleshot LAN/WAN network issues, reducing system downtime by 15%
- Managed service tickets using Remedy, ensuring accurate documentation and timely resolution
- Coordinated issue resolution across multiple teams as key technical point of contact, improving communication and response times
- Performed root cause analysis and implemented corrective actions to prevent recurring issues
- Conducted user training on IT systems, security practices, and technical procedures, increasing user competency and compliance
- Maintained system documentation and ensured compliance with operational standards
- Installed, configured, and maintained telecommunications systems supporting networks valued at over $3M
- Led small teams, ensuring mission readiness and effective communication
Skills
- Active Directory
- Windows Server
- Cloud Infrastructure
- Incident management
- ServiceNow
- Remedy
- Job Scheduling
- Batch Processing
- Systems Monitoring
- LAN/WAN Troubleshooting
- Performance Metrics
- Technical Documentation
- Slack
- Microsoft Teams
- Zoom
Certification
- CompTIA Security+, In Progress
- CompTIA Network+, Planned
Training
- Networking Fundamentals & Security
- Routing & Switching
- Windows Server Administration
- Microsoft Exchange Server
- Help Desk Troubleshooting
- Computer Hardware & Systems
- Wide Area Networks (WAN)
Security Clearance
Active Secret Security Clearance
Timeline
Systems Administrator
Walmart
10.2024 - Current
Information Technology Specialist
United States Army
01.2017 - 01.2023