Senior Enterprise Systems Engineer (Tier II/III) - Remote

Koitecc Solutions; Northern (KY); Hybrid; USD 108,000 - 195,000; Full time

Job summary

Leidos is seeking experienced Enterprise Systems Engineers for the TSA TOMCAT program. The role covers Tier II/III support, incident resolution, system administration, and cross-team collaboration to sustain enterprise infrastructure.

We value deep knowledge of Windows and Linux, Active Directory, DNS, DHCP, virtualization, and ITIL processes, with a track record of hands-on engineering leadership during major incidents. Remote work with onsite support may be required.

Qualifications

• Requires BS degree and 8+ years of relevant experience, or Masters with 6+ years of relevant experience.
• Ability to obtain and maintain TSA Suitability and Public Trust clearance.
• Experience administering Windows and Linux enterprise environments.

Responsibilities

• Provide engineering and operational support for enterprise infrastructure.
• Troubleshoot escalated incidents involving Windows/Linux systems, Active Directory, DNS, DHCP, virtualization, storage, monitoring, and related enterprise platforms.
• Perform system configuration, administration, patching, upgrades, and routine maintenance.
• Analyze system performance, capacity, availability, and operational health.
• Respond to escalated incidents and support timely restoration of affected services.
• Review monitoring alerts and operational events and perform structured technical troubleshooting.
• Coordinate with network, cloud, cybersecurity, database, application, and ServiceNow teams to resolve cross-domain issues.
• Execute approved changes and maintenance activities in accordance with ITIL change and release processes.
• Maintain accurate technical documentation, runbooks, knowledge articles, and service records.
• Identify recurring incidents and technical problems and provide inputs to Problem Management.
• Support operational readiness and transition of new systems into steady-state O&M.
• Escalate highly complex, architectural, or systemic problems to engineering resources.
• Provide engineering support for complex enterprise infrastructure and core services.
• Serve as the senior technical escalation point for unresolved or systemic infrastructure incidents.
• Analyze complex performance, availability, capacity, and reliability issues.
• Engineer and implement approved technical solutions to restore or improve service performance.
• Support major and critical incident response by providing technical leadership and engineering expertise.
• Develop and execute complex remediation, upgrade, patching, configuration, and modernization activities.
• Evaluate technical dependencies and identify infrastructure risks and supportability gaps.
• Develop automation, scripts, monitoring enhancements, SOPs, and technical runbooks to improve operational efficiency.
• Conduct technical reviews of proposed changes and identify potential operational impacts.
• Provide technical recommendations to engineering leadership and program management.
• Mentor engineers and promote knowledge transfer and technical redundancy.

Skills

Windows Server

Linux

Active Directory

DNS

DHCP

Virtualization

Monitoring

Scripting

PowerShell

Bash

Python

ITIL

ServiceNow

VMware

Documentation

Education

Bachelor's degree

Master's degree

Tools

ServiceNow

SolarWinds

SCOM

VMware

Microsoft stack

Job description

Leidos is seeking experienced Enterprise Systems Engineers for the TSA TOMCAT program. The role covers Tier II/III support, incident resolution, system administration, and cross-team collaboration to sustain enterprise infrastructure.

We value deep knowledge of Windows and Linux, Active Directory, DNS, DHCP, virtualization, and ITIL processes, with a track record of hands-on engineering leadership during major incidents. Remote work with onsite support may be required.