Sr. Systems Engineer

PAE Government Services Inc.; Columbia (MD); On-site; USD 140,000 - 190,000; Full time

Benefits offered by this job

Health, dental, vision insurance

401(k) matching

Paid time off

Job summary

Amentum seeks experienced IT infrastructure professionals to design, implement, and sustain enterprise infrastructure across mission-critical environments in the United States. The role focuses on Cisco UCS, AD, storage, virtualization, and secure network services in high-security settings.

Responsibilities include modernization efforts, vulnerability remediation, and rigorous documentation. The team values hands-on experience, collaboration, and continuous learning in a technical culture.

Qualifications

• 8+ years designing, implementing, and supporting enterprise infrastructure environments.
• Experience with Cisco UCS administration and lifecycle management.
• Experience with VMware vSphere/ESXi/vCenter or Hyper-V/Nutanix.
• Strong networking knowledge: LAN/WAN, routing, switching, segmentation, security.
• Scripting in PowerShell, Python, Ansible or similar.
• Active Directory, DNS, DHCP, file services administration.

Responsibilities

• Design, implement, administer, and maintain enterprise infrastructure systems across multiple environments.
• Support deployment and administration of network solutions including routing, switching, and secure communications.
• Develop and maintain infrastructure standards, engineering best practices, and system documentation.
• Participate in modernization efforts, migrations, and lifecycle management.
• Manage enterprise storage, backup, DR, replication, and capacity planning.
• Administer identity services including AD, GPO, DNS, DHCP, and file services.
• Plan and execute upgrades, patches, and changes in production.
• Troubleshoot complex issues and perform root-cause analysis.
• Collaborate with cybersecurity to support vulnerability remediation and STIG compliance.
• Develop technical documentation and runbooks; mentor junior engineers.

Skills

Cisco UCS

Active Directory

VMware vSphere

Networking concepts

PowerShell

Python

Ansible

System hardening

Troubleshooting

Documentation

Cybersecurity basics

Cloud/Virtualization concepts

Education

Bachelor's Degree in IT/CS/Engineering

Security clearance TS/SCI

Tools

Microsoft server environments

Nutanix

NetApp storage

NIST RMF/CISS benchmarks

Job description

Purpose and Impact

Come be part of a dynamic program that delivers enterprise infrastructure, systems engineering, and operational support across multiple mission‑critical network environments. Our team designs, implements, and sustains modern technology solutions supporting real‑world customer operations. We foster a highly collaborative and technical culture that values innovation, continuous learning, and professional growth. Team members are encouraged to expand their expertise through training opportunities, cross‑functional collaboration, and hands‑on experience with a wide range of technologies supporting complex operational environments.

Work Schedule

8hrs / day, 5 days per week, full‑time onsite position. Occasional after hours work for system maintenance.

Essential Responsibilities

• Design, implement, administer, and maintain enterprise infrastructure systems including Cisco UCS, Microsoft Active Directory, enterprise storage platforms, Windows Server environments, and network infrastructure.
• Support the deployment and administration of network solutions including routing, switching, segmentation, and secure communications across multiple classified environments.
• Assist with the development and maintenance of infrastructure standards, engineering best practices, and system documentation.
• Participate in infrastructure modernization efforts, technology refresh projects, migrations, and lifecycle management activities.
• Administer enterprise storage platforms and support backup, disaster recovery, replication, and capacity planning initiatives.
• Manage enterprise identity and authentication services including Active Directory, Group Policy, DNS, DHCP, and file services.
• Plan and execute system upgrades, firmware updates, patching activities, maintenance actions, and approved changes within production environments.
• Troubleshoot complex infrastructure issues, perform root cause analysis, and implement corrective actions to improve system availability and performance.
• Work closely with cybersecurity personnel to support vulnerability remediation, STIG implementation, system hardening, and compliance requirements.
• Evaluate technologies, tools, and system enhancements and provide recommendations for operational improvements.
• Develop and maintain technical documentation including procedures, diagrams, system configurations, and operational runbooks.
• Provide technical guidance and mentoring to junior and mid‑level engineers.
• Support planned after‑hours maintenance windows and respond to operational incidents as required to maintain system availability.

Work Environment, Physical Demands, and Mental Demands

Standard working environment.

Minimum Requirements (Knowledge, Skills, and Abilities)

• 8+ years of experience designing, implementing, and supporting enterprise infrastructure environments including compute, storage, networking, virtualization, and identity management services.
• Strong experience with Cisco UCS administration, lifecycle management, firmware maintenance, capacity planning, and operational support.
• Experience administering enterprise virtualization platforms such as VMware vSphere, ESXi, vCenter, Hyper‑V, Nutanix, or equivalent technologies.
• Strong understanding of enterprise networking concepts including LAN/WAN technologies, routing, switching, network segmentation, and security best practices.
• Experience implementing and supporting infrastructure solutions within complex enterprise environments.
• Hands‑on experience administering Microsoft Active Directory, Group Policy, DNS, DHCP, file services, and authentication technologies.
• Experience managing enterprise storage platforms, backup solutions, disaster recovery capabilities, and data protection strategies.
• Strong knowledge of Windows Server operating systems including patch management, system hardening, performance tuning, and lifecycle management.
• Experience supporting infrastructure maintenance activities including upgrades, migrations, patching, change management, and disaster recovery exercises.
• Ability to lead technical tasks and infrastructure projects while coordinating with engineering teams, stakeholders, and vendors.
• Strong troubleshooting and analytical skills with the ability to identify root causes and resolve complex technical issues.
• Knowledge of cybersecurity principles including vulnerability remediation, access controls, compliance requirements, and secure infrastructure practices.
• Experience with infrastructure automation and scripting using PowerShell, Python, Ansible, or similar technologies.
• Experience developing and maintaining technical documentation, procedures, diagrams, and operational guides.
• Excellent verbal and written communication skills with the ability to collaborate effectively across technical and non‑technical teams.

Security Clearance Required

TS / SCI

Minimum Education

High School Diploma or equivalent

Preferred Education

Bachelor’s Degree in Information Technology, Computer Science, Engineering, or related field

Minimum Years of Experience

8+ required

Minimum Certifications

• Required IAT Certs: one or more of the following: CISM, CISSP, or equivalent senior‑level baseline certification
• Required vendor certification in one or more relevant technologies (e.g., Microsoft, VMware, Cisco, NetApp, Pure Storage, HP, Dell, Linux+, RedHat, HBSS, ACAS).
• Candidates without an active certification must obtain at least one within 6 months of hire.

Preferred Qualifications

• Bachelor’s Degree
• Experience supporting Federal Government, DoD, or regulated environments.
• Experience with NIST RMF, NIST800‑53, STIGs, CIS Benchmarks, or equivalent compliance frameworks.
• Experience with enterprise backup, disaster recovery, and business continuity solutions.
• Prior Military experience

Other Responsibilities

• Safety – Amentum enforces a safety culture whereby all employees have the responsibility for continuously developing and maintaining a safe work environment.
• Quality – Quality is the foundation for the management of our business and the keystone to our goal of customer satisfaction. It is our policy to consistently provide services that meet customer expectations, and each employee must conform to the Amentum Quality Policy and carry out job activities in compliance with applicable Amentum Quality System documents and customer contracts.
• Procedure Compliance – Each employee must read, understand and implement the general and specific operational, safety, quality and environmental requirements of all plans, procedures and policies pertaining to his/her job.

Compensation Details

$140,000- $190,000 The compensation range or hourly rate listed for this position is provided as a good‑faith estimate of what the company intends to offer for this role at the time this posting was issued. Actual compensation may vary based on factors such as job responsibilities, education, experience, skills, internal equity, market data, applicable collective bargaining agreements, and relevant laws.

Benefits Overview

• Health, dental, and vision insurance
• Paid time off and holidays
• Retirement benefits (including 401(k) matching)
• Educational reimbursement
• Parental leave
• Employee stock purchase plan
• Tax‑saving options
• Disability and life insurance
• Pet insurance
• Benefits may vary based on employment type, location, and applicable agreements.

Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, sexual orientation, gender identity, disability or protected veteran status.

Amentum is proud to be an Equal Opportunity Employer. Our hiring practices provide equal opportunity for employment without regard to race, sex, sexual orientation, pregnancy (including pregnancy, childbirth, breastfeeding, or medical conditions related to pregnancy, childbirth, or breastfeeding), age, ancestry, United States military or veteran status, color, religion, creed, marital or domestic partner status, medical condition, genetic information, national origin, citizenship status, low‑income status, or mental or physical disability so long as the essential functions of the job can be performed with or without reasonable accommodation, or any other protected category under federal, state, or local law.

Original Posting

10/12/2026 - Until Filled Amentum anticipates this job requisition will remain open for at least three days, with a closing date no earlier than three days after the original posting. This timeline may change based on business needs.

Accommodation

If you need a reasonable accommodation for any part of the employment process, please complete our Accommodation Request. Requests for accommodation will be considered on a case‑by‑case basis.

About Amentum

For more than 100 years, Amentum has tackled the world’s toughest challenges to deliver agile and steadfast solutions to the U.S. government and its allies. With more than 50,000 employees on all seven continents and in more than 60 countries, Amentum delivers a broad range of operational support services to meet the critical needs of our clients. Our headquarters are in Chantilly, VA. Find us online at https://www.amentum.com/.