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# Tier III Enterprise Systems Engineer

- **Company:** Nabout Leidos
- **Location:** United States
- **Salary:** $107,900.0 - $195,050.0
- **Contract:** Permanent contract
- **Skills:** Multitier Architecture, Microsoft Windows, Active Directory, Apache Tomcat, Bash Shell, Cloud Computing, Cyber Security, Databases, Dynamic Host Configuration Protocol, Linux, Domain Name System (DNS), Python (Programming Language), Windows PowerShell, Release Management, Virtualization Technology, Scripting, Enterprise Software Applications, Servicenow, Vmware
- **Published:** September 5, 2026
- **Apply:** https://jobs.military.com/career/329436/tier-ii-iii-enterprise-systems-engineer-opportunities-supporting-tsa-tomcat-remote

## About the Role

* Requires BS degree and 8+ years of prior relevant experience or Masters with 6+ ears of prior relevant experience. In lieu of degree, additional experience may be required.\n
 * Ability to obtain and maintain TSA Suitability\n
 * Ability to obtain and maintain Public Trust security clearance\n
 * Enterprise systems administration or engineering experience.\n
 * Experience supporting Windows and/or Linux enterprise environments.\n
 * Knowledge of Active Directory, DNS, DHCP, virtualization, monitoring, storage, and enterprise infrastructure.\n
 * Demonstrated troubleshooting and problem-resolution skills.\n
 * Experience with ITIL incident, change, and problem-management processes.\n
 * Experience with incident, problem, change, and release management.\n
 * Demonstrated root-cause analysis and service-restoration experience.\n
 * Scripting experience with PowerShell, Bash, Python, or comparable technologies.\n
 * Strong technical documentation, communication, and stakeholder-management skills.\n
 * Ability to operate effectively during high-impact outages and competing operational priorities\n
 * Security+.\n
 * Microsoft certification and/or VMware VCP preferred.\n

## Description

The Tier II and Tier III Enterprise Systems Engineer provides advanced operational and engineering support for TOMCAT enterprise infrastructure and core services. Tier II serves as an escalation point for issues that cannot be resolved by Tier I or standard operational support personnel and performs structured troubleshooting, system administration, configuration, patching, monitoring, performance analysis, and service restoration. Additionally, Tier II works across enterprise systems and infrastructure, coordinating with network, cloud, cybersecurity, database, application, ServiceNow, and other technical teams to resolve incidents and maintain reliable service operations. The Tier III Enterprise Systems Engineer provides senior-level engineering, advanced troubleshooting, technical problem resolution, and operational stabilization for complex TOMCAT enterprise infrastructure. The position serves as the highest technical escalation point within the enterprise systems support structure and


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