Matthew Coates | TS/SCI
Alexandria,VA
Summary
Highly motivated and results-oriented Systems and Server Administrator with 3+ years of experience managing and troubleshooting complex IT infrastructures. Proven ability to administer Windows and Linux servers, virtualization (ESXi), automation (PowerShell), security hardening (STIG compliance), performance monitoring (SCOM, Nagios), and incident response. Proficient in Active Directory, Azure, SCCM, and various ticketing systems (ServiceNow, Remedy). Holds CompTIA Security+ CE.
Overview
3
3
years of professional experience
1
1
Certification
Work History
Server Administrator
RS4G
02.2025 - Current
- Monitored 300+ servers across 5 domains using SCOM, proactively tracking heartbeat alerts, disk space utilization, and other critical performance indicators, and resolving performance bottlenecks
- Executed server decommissioning procedures, including data migration, backups, and removal from Active Directory, DNS, and IPAM
- Generated daily reports on domain controller health, encompassing replication status, connectivity, DHCP, DFS, DNS, print queues, and Active Directory errors
- Diagnosed and resolved complex server performance issues, utilizing various diagnostic tools and techniques to identify root causes and implement effective solutions
- Managed DNS records (forward and reverse lookups) for new server installations, ensuring proper name resolution and network functionality
- Managed Active Directory Sites and Services, configuring and optimizing inter-site replication connections to ensure efficient data synchronization between geographically dispersed locations
Systems Administrator
Leidos
11.2024 - Current
- Automated daily server health reporting (uptime, print queues, internet connectivity) using PowerShell scripts, improving team awareness and reducing manual effort
- Implemented robust weekly server maintenance (OS patching, Trellix updates, Group Policy, SCCM, Hyper-V migrations), minimizing downtime and ensuring system stability
- Utilized ACAS vulnerability scans to identify and remediate security vulnerabilities on servers and workstations, applying OS/application patches, Group Policy updates, SCCM configurations, Trellix updates, and browser patches
- Installed, configured, and maintained 50+ network printers, ensuring STIG compliance and resolving recurring printing issues
- Administered DHCP server, managing scopes, reservations, and ensuring efficient IP address allocation for network devices
- Configured SMTP relay restrictions and connection controls on email servers to enable secure and authorized scanning from network printers, enhancing network security
- Created, managed, and maintained user accounts, security group permissions, and OU structure within Active Directory, ensuring appropriate access to shared drives and network resources
Systems Administrator III
Prime Technical Services
03.2024 - 11.2024
- Provided Tier 1-3 technical support, resolving hardware, software, network, and account-related issues for users and customers
- Configured, managed, and maintained Windows operating systems on desktop and server systems
- Deployed and reimaged desktops and laptops using Windows AD and SCCM
- Managed client and application patching and updates through SCCM and Software Center
- Troubleshot end-user client issues using diagnostic tools to determine network connectivity
- Managed user account creation and permissions
IT Specialist II
Tyto Athene/Pentagon
Alexandria, VA
09.2022 - 02.2024
- Provided daily break/fix and meeting support to 625 staff members, including high-level customers (GS12-GS15, military officers)
- Installed, configured, maintained, and troubleshot operating systems, applications, security updates, and endpoint system management tools
- Monitored and updated user groups and permissions using Active Directory
- Performed hands-on fixes at the desktop level, including software installations, upgrades, file backups, and application configuration
- Deployed and set up customer workstations with peripherals (KVM switches, docks)
- Generated and responded to trouble tickets in Remedy, including customer interface and escalations
Operations Technician II
KForce/Lumen
Herndon, VA
03.2022 - 08.2022
- Installed, configured, updated, and maintained Linux (RHEL 7, CentOS 6) servers
- Created and managed user and administrative accounts in Windows Active Directory
- (Clarify if Linux account management was also performed)
- Monitored system performance, troubleshot issues, and ensured high availability and reliability of Linux-based infrastructure
- Used Nagios to monitor 2000+ processes, applications, and health checks on 150+ interconnected systems, managing over 1000 Nagios configurations
- Developed and implemented proactive problem mitigation procedures
- Proficient in SSH, log management, and resource monitoring (CPU, memory, processes) in Linux environments
- Provided customer support, including ticket generation and resolution in Remedy
Systems Administrator/Network Response
Howard University Incident Response
Washington, DC
10.2021 - 02.2022
- Created technical documentation for incident response procedures
- Deployed and configured Active Directory, defining roles and permissions
- Deployed and configured Azure Virtual Desktop infrastructure
- Provided user support (troubleshooting, VPN, network drives, application installations, account issues)
- Assisted Tier 3 engineers with automation scripts (security application deployment) and vSphere troubleshooting (lost share folders)
Education
High School Diploma -
Havelock High School
Skills
- Active Directory
- Automation (PowerShell)
- Azure
- CentOS
- Configuration Management (SCCM)
- Customer Service
- DHCP
- DNS
- ESXi
- Group Policy
- Hardware Troubleshooting
- Hyper-V
- Intune
- Log Management
- Microsoft O365
- Moloch
- Monitoring Tools (SCOM, Nagios)
- Networking
- OS Patching
- Outlook
- Print Server Management
- Remedy
- RHEL
- ServiceNow
- Splunk
- STIG Compliance
- VMware vSphere
- Windows Server 2012/2016/2019/2022
Certification
CompTIA Security+ CE, 02/01/23, 02/01/26
Security Clearance
TS/SCI
Timeline
Server Administrator
RS4G
02.2025 - Current
Systems Administrator
Leidos
11.2024 - Current
Systems Administrator III
Prime Technical Services
03.2024 - 11.2024
IT Specialist II
Tyto Athene/Pentagon
09.2022 - 02.2024
Operations Technician II
KForce/Lumen
03.2022 - 08.2022
Systems Administrator/Network Response
Howard University Incident Response
10.2021 - 02.2022
High School Diploma -
Havelock High School
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