We are seeking a highly experienced Networking Infrastructure Engineer with a minimum of 10 years of hands-on experience in the design, installation, and maintenance of enterprise networks and systems operations.
Key Responsibilities
· Monitor, maintain, and support multiple large-scale network infrastructures with varying security postures.
· Collaborate with the Senior Infrastructure Architect and Senior Infrastructure Engineer to ensure optimal network performance and security.
· Perform after-hours work and respond promptly to network or systems emergencies with minimal supervision.
· Apply expert-level troubleshooting skills in a high-availability, 24/7 enterprise environment
Required Technical Expertise
· Routing Protocols: OSPF, BGP, Multicast (PIM, DVMRP)
· Network Design: VLAN design and migration
· Security: Policy-enabled networking, Access Control Lists, Endpoint Integrity, Firewalls
· Authentication & Access Control: Network Access Control, IDS/IPS, EAP/PEAP, RADIUS, Certificate Authorities
· Protocols & Services: SNMPv3, SSH, SSL, Active Directory, DHCP, DNS, IAS
· High Availability & Redundancy: VOIP, VRRP, Disaster Recovery
· Hardware & Standards: Multi-vendor network hardware, troubleshooting up to 100 GB standards
Desirable Knowledge
· SCADA systems
· IP Address Management (IPAM)
· PCI compliance
· Wavelength Division Multiplexing (WDM)
· MACsec encryption
Additional Desired Skill Sets
Software:
· NetSight
· NetBox
· Unimus
· EfficientIP
· NPS (RADIUS)
Hardware:
· Extreme (S-Series, VOSS, EXOS)
· Arista
Essential Functions
Physical Requirements
· Must be able to lift at least 70 pounds
· Must be able to walk long distances as part of infrastructure support duties
Soft Skills & Professionalism· Strong written and verbal communication skills for documentation and reporting
· Ability to work independently and collaboratively in a high-performance team
· Demonstrated use of best practices and adherence to security policies and procedures
Compensation Details:
$102,000
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:
Our health and welfare benefits are designed to support you and your priorities. Offerings include:
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
Note: Benefits may vary based on employment type, location, and applicable agreements. Positions governed by a Collective Bargaining Agreement (CBA), the McNamara-O'Hara Service Contract Act (SCA), or other employment contracts may include different provisions/benefits.
Original Posting:
08/17/2026 - Until FilledAmentum 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.
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. Learn more about your rights under Federal laws and supplemental language at Labor Laws Posters.
Skills Required
- Minimum of 10 years hands-on experience in design, installation, and maintenance of enterprise networks and systems operations
- Expert-level troubleshooting in high-availability, 24/7 enterprise environments and ability to respond to after-hours emergencies
- Routing protocols: OSPF, BGP, Multicast (PIM, DVMRP)
- VLAN design and migration
- Security: policy-enabled networking, Access Control Lists, Endpoint Integrity, Firewalls
- Authentication & access control: Network Access Control, IDS/IPS, EAP/PEAP, RADIUS, Certificate Authorities
- Protocols & services: SNMPv3, SSH, SSL, Active Directory, DHCP, DNS, IAS
- High availability & redundancy technologies: VOIP, VRRP, Disaster Recovery
- Experience with multi-vendor network hardware and troubleshooting up to 100 GB standards
- Ability to perform physical infrastructure tasks: lift at least 70 pounds
- Ability to walk long distances as part of infrastructure support duties
- Strong written and verbal communication skills for documentation and reporting
- Demonstrated use of best practices and adherence to security policies and procedures
- Desirable: SCADA systems knowledge
- Desirable: IP Address Management (IPAM)
- Desirable: PCI compliance knowledge
- Desirable: Wavelength Division Multiplexing (WDM)
- Desirable: MACsec encryption
- Preferred software: NetSight, NetBox, Unimus, EfficientIP, NPS (RADIUS)
- Preferred hardware experience: Extreme (S-Series, VOSS, EXOS), Arista
Amentum Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Amentum and has not been reviewed or approved by Amentum.
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Healthcare Strength — Healthcare offerings are described as comprehensive, with medical, dental, and vision plans and multiple PPO/HSA options. Mental health support via an employee assistance program and other wellness resources is also included in the benefits mix.
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Retirement Support — Retirement support is positioned as a meaningful part of total rewards through a 401(k) plan with employer matching. Profit-sharing contributions and immediate or near-term vesting in some cases further strengthen the retirement value proposition.
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Leave & Time Off Breadth — Time-off benefits are presented as solid for the sector, including tiered PTO accrual by tenure and a set of paid holidays. Role-dependent flexible or remote work options and leave programs add to perceived work-life support.
Amentum Insights
What We Do
Amentum is a premier global technical and engineering services partner supporting critical programs of national significance across defense, security, intelligence, energy, and environment. We draw from a century-old heritage of operational excellence, mission focus, and successful execution underpinned by a strong culture of safety and ethics. Headquartered in Germantown, Md., we employ more than 20,000 people in 48 states and 28 foreign countries and territories. Visit us at amentum.com to explore how we deliver excellence for our customers’ most vital missions.






