Network Engineer

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. Welcome back! We encourage you to check on the status of your current job applications with us. You can also search for a list of our current job openings and see if there are any new positions that might be a good fit for you. Thank you for continued interest in employment with 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/ 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. If you need assistance, please reach out to workdaycandidateaccounts@amentum.com EEO including Disability/Protected Veterans Labor Laws Posters Amentum has become aware of unauthorized individuals who are falsely using the Amentum name and /or logo in an attempt to solicit fees from potential job seekers. These deceptive and unauthorized individuals are soliciting money, promising placement in a position with Amentum. Please note any communication requesting any amount of money in exchange for employment with Amentum is fraudulent. These communications do not originate from Amentum and are not associated with the recruitment process. Amentum and its affiliates never charge candidates fees or payments of any kind in order to secure employment. As a precaution, we recommend you do not disclose personal or financial details to anyone as a response to an unsolicited email, social media, or dating website request. Amentum will never as ask for a placement fee or any other fee to expedite the hiring process. If you are contacted by anyone offering employment with Amentum, you should never be asked to pay a fee for recruiting. Amentum personnel will always send email from an identifiable corporate account (ending in @amentum.com) and never from a public email account like Yahoo!, Google, Gmail, or Hotmail. If you are contacted regarding a fraudulent employment proposal, we encourage you to alert your local law enforcement agency/police authority. To read more about Amentum’s commitment to ethics, please click here.