Network Engineer

Posted 14 Days Ago
Be an Early Applicant
Columbia, MD, USA
In-Office
135K-185K Annually
Mid level
Security • Cybersecurity
The Role
Designs, implements, maintains, and troubleshoots enterprise networks across multiple sites and classified environments. Manages Cisco routing and switching, Palo Alto firewalls, Type 1 encryption devices, network upgrades, monitoring, documentation, incident resolution, configuration management, and vulnerability remediation. Collaborates with cybersecurity and engineering teams to deliver secure, reliable infrastructure. The role is fully onsite, includes occasional after-hours work, and requires travel of up to 25%.
Summary Generated by Built In

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: (shift hours and days of the week)

8hrs/day, 5days per week, all onsite

Some travel required (no more than 25%), never weekends

Occasional after-hours work, pre-coordinated

Essential Responsibilities: (describe the day-to-day)

Design, implement, maintain, and optimize enterprise network infrastructure supporting mission-critical operations across multiple sites.

Configure and manage network devices including routers, switches, firewalls, and encryption devices in classified and enterprise environments.

Perform network troubleshooting, root cause analysis, and incident resolution to maintain high availability and operational performance.

Support implementation of network upgrades, technology refreshes, and infrastructure modernization initiatives.

Develop and maintain network architecture diagrams, technical documentation, standard operating procedures, and configuration baselines.

Monitor network performance, capacity, and security posture while proactively identifying opportunities for improvement.

Collaborate with systems, cybersecurity, and engineering teams to design secure and scalable network solutions.

Support vulnerability remediation efforts, compliance requirements, and configuration management activities in accordance with organizational policies and industry best practices.

Manage and resolve service requests, incidents, and change activities through established ticketing and workflow systems.

Evaluate emerging networking technologies and recommend solutions that improve reliability, security, and operational efficiency.

Serve as a technical contributor on a team of network engineers supporting complex enterprise and classified network environments.

Work Environment, Physical Demands, and Mental Demands:

Standard working environment

Minimum Requirements (Knowledge, Skills, and Abilities):

Working knowledge of enterprise networking concepts including routing, switching, VLANs, network segmentation, and TCP/IP protocols.

Ability to independently analyze technical issues and develop effective solutions for complex networking challenges.

Strong troubleshooting skills with experience diagnosing and resolving hardware, software, and connectivity issues.

Ability to communicate technical information effectively to both technical and non-technical stakeholders.

Experience supporting change management, configuration management, and operational maintenance activities.

Knowledge of cybersecurity principles and secure network design practices within enterprise environments.

Ability to work independently while collaborating effectively within a cross-functional engineering team.

Required Qualifications include:

4+ years of experience supporting enterprise network infrastructure and operations.

Experience designing, implementing, and maintaining enterprise network environments.

Experience supporting classified network environments.

Experience configuring and managing Cisco routing and switching platforms.

Experience administering Palo Alto firewalls and security policies.

Experience working with Type 1 encryption devices, including TACLANE technologies.

Experience utilizing enterprise ticketing and workflow management tools such as ServiceNow or Jira.

Required Certs: one or more of the following: Security+, SecurityX (CASP+), CISSP, or equivalent IAT2 level certification

Required Vendor Certification:  Cisco CCNA or higher

Security Clearance Required:

TS / SCI

Minimum Education:

  • High School Diploma or equivalent

Preferred

  • Bachelor's Degree in Information Technology, Computer Science, Engineering, or related field
  • undefinedMinimum Years of Experience:4+Required Certifications:This is an IAT2 level billet. Applicant must have:-          Required IAT Certs: one or more of the following: Security+, SecurityX (CASP+), CISSP, or equivalent baseline certificationRequired Vendor Cert: CCNA or higher Cisco certification Preferred Qualifications: AI if applicable to your programExperience supporting DoD, Intelligence Community, or other classified enterprise environments.Experience implementing and maintaining NIST RMF, NIST 800-53, STIG, or CIS Benchmark requirements.Experience with Cisco Identity Services Engine (ISE), Cisco DNA Center, or other enterprise network management platforms.Experience with network automation, scripting, or infrastructure-as-code methodologies.Experience supporting cloud-connected or hybrid enterprise network environments.Prior military service. Additional Hashtags:#javelinThis position [is not] designated as a safety sensitive position.As part of our commitment to maintaining a safe and compliant work environment, Amentum is a drug-free workplace and requires all personnel to comply with company drug and alcohol policies as a condition of employment.  Employment is contingent upon successful completion of the drug screening process.  Please note that this may include pre-hire screening for marijuana, as well as other federally controlled substances due to Amentum’s role as a federal contractor and trusted partner to the US Government.   Other Responsibilities:Safety - Amentum enforces a safety culture whereby all employees have the responsibility for continuously developing and maintaining a safe work environment. As appropriate, each employee is responsible for completing all training requirements and fulfilling all self-aid/buddy aid responsibilities, participating in emergency response tasks and serving on safety committees and teams.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. Accordingly, 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. Each employee must read and understand his/her Quality Management and Customer Satisfaction responsibilities.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. 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.  

       

Compensation Details:

$135,000 - $185,000

       

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:

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.

       

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

  • 4+ years supporting enterprise network infrastructure and operations
  • Experience designing, implementing, and maintaining enterprise network environments
  • Experience supporting classified network environments
  • Experience configuring and managing Cisco routing and switching platforms
  • Experience administering Palo Alto firewalls and security policies
  • Experience working with Type 1 encryption devices, including TACLANE technologies
  • Experience using enterprise ticketing and workflow tools such as ServiceNow or Jira
  • Security+, SecurityX (CASP+), CISSP, or equivalent IAT2-level certification
  • Cisco CCNA or higher certification
  • Top Secret/SCI security clearance
  • High school diploma or equivalent
  • Bachelor's degree in Information Technology, Computer Science, Engineering, or a related field
  • Experience supporting DoD, Intelligence Community, or other classified enterprise environments
  • Experience implementing NIST RMF, NIST 800-53, STIG, or CIS Benchmark requirements
  • Experience with Cisco ISE, Cisco DNA Center, or other enterprise network management platforms
  • Experience with network automation, scripting, or infrastructure-as-code methodologies
  • Experience supporting cloud-connected or hybrid enterprise network environments
  • Prior military service

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.

  • 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.
  • 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.
  • 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.

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The Company
HQ: Chantilly, VA
18,261 Employees

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.

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