Tier II and Tier III Enterprise Systems Engineer

Leidos is seeking highly qualified professionals to support the TSA TOMCAT Program. We are especially interested in connecting with current incumbent personnel supporting this mission who are interested in continuing their work and bringing their valuable mission knowledge and experience to Leidos., 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 is responsible for resolving complex or systemic issues that exceed Tier II capabilities., Duties will vary depending on the specific position and level. Duties may include:

• Provide engineering and operational support for enterprise infrastructure and core services.
• 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., CI/CD DevOps Splunk Apigee Ansible Grafana Firewall Scripting Terraform DevSecOps Confluent Operations Management Automation Resilience Kubernetes OSI Models Unix Shell AWS Devops Reliability Multi-Cloud Claude Code Public Cloud Apache Kafka API Management Helm (Software) Containerization Data Engineering Agile Methodology Docker (Software) Disaster Recovery Influencing Skills Business Valuation Problem Management Scalability Design Network Appliances Amazon API Gateway Systems Engineering Amazon Web Services Software Engineering Software Development Lifecycle Management IT Service Management System Administration Requirements Analysis Prometheus (Software) Full Stack Development Continuous Integration Reliability Engineering Artificial Intelligence Network Troubleshooting Business Transformation Configuration Management Requirements Elicitation Java (Programming Language) Software As A Service (SaaS) Platform As A Service (PaaS) Infrastructure as Code (IaC) Amazon Elastic Compute Cloud Python (Programming Language) Influencing Without Authority Troubleshooting (Problem Solving) +0

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• Ability to obtain and maintain TSA Suitability
• Ability to obtain and maintain Public Trust security clearance
• Enterprise systems administration or engineering experience.
• Experience supporting Windows and/or Linux enterprise environments.
• Knowledge of Active Directory, DNS, DHCP, virtualization, monitoring, storage, and enterprise infrastructure.
• Demonstrated troubleshooting and problem-resolution skills.
• Experience with ITIL incident, change, and problem-management processes.
• Experience with incident, problem, change, and release management.
• Demonstrated root-cause analysis and service-restoration experience.
• Scripting experience with PowerShell, Bash, Python, or comparable technologies.
• Strong technical documentation, communication, and stakeholder-management skills.
• Ability to operate effectively during high-impact outages and competing operational priorities
• Security+.
• Microsoft certification and/or VMware VCP preferred., * TSA, DHS, or other federal enterprise IT experience.
• Experience with ServiceNow, SolarWinds, SCOM, VMware, Microsoft, or comparable enterprise technologies.
• Experience supporting geographically distributed enterprise environments.
• Experience in 24x7 operational support.
• Federal enterprise O&M experience.
• Experience providing technical leadership during major incidents.
• Architecture or engineering certification., CentOS Writing Jenkins Planning Teamwork Big Data Equities Leadership Enthusiasm Innovation Mitigation Market Data Coordinating Microservices Risk Analysis Virtualization System Testing Solution Design Ancient History Computer Science Database Systems Atlassian Bamboo Interface Design Agile Methodology Technical Support Solution-Oriented Security Clearance Workflow Management Systems Engineering Systems Integration Software Engineering Software Development Systems Architecture Atlassian Confluence Programming Languages Model View Controller Requirements Analysis Software Documentation Continuous Integration Collaborative Software Continuous Development Text Retrieval Systems Open Source Intelligence Dynamic Trunking Protocol Scrum (Software Development) Python (Programming Language) Metal Inert Gas (MIG) Welding Continuous Improvement Process Document And Media Exploitation Top Secret-Sensitive Compartmented Information (TS/SCI Clearance) +0

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Pay and benefits are fundamental to any career decision. That’s why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits .

If you are currently supporting this mission and are interested in learning more about opportunities with Leidos, we encourage you to apply even if you do not see your exact position listed above.

Join Leidos and help continue delivering the technology, expertise, and mission support that enable TSA TOMCAT operations.

If you’re looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo - because the mission demands it. We’re not hiring followers. We’re recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We’re already at step 30 - and moving faster than anyone else dares., Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com .