Senior Network Engineer/SME

Purpose and Impact Amentum is seeking a Sr. Network Engineer/SME to join our dynamic team supporting our customer in the National Capital Region. In this position you’ll be a part of a team that shapes the strategic future for our clients and defines the strategy to get them there. This position requires an active DoD TS/SCI security clearance that has been adjudicated in the last 5 years or designated CE and the ability to obtain and maintain special accesses. Work Schedule Work is typically performed, Monday through Friday 8-hour days onsite. Flexibility within a 2-week pay period to reach 80 hours. Essential Responsibilities Be part of a collaborative core network team supporting the end-to-end planning, design, installation, and configuration of a medium sized IP network. Provide technical expertise using knowledge of advanced routing and switching technologies, service builds including layer 3 VPN services, and infrastructure security. Work with team members to identify and resolve complex issues involved in designing/planning inside plant and outside plant network infrastructures. Advise the customer on the development of technical approaches to solving integration and interoperability related problems; to include formulation and execution of acquisition strategies. Advise the customer on relevant policies, directives, plans, or CONOPS developments that impact technical strategies, integration, or deployment efforts. Develop and present briefings and/or technical papers, to convey project status, objectives, and strategic milestones to managers; identify and quantify risks that would affect the quality, timeliness, and cost of project services and deliverables; recommend risk avoidance and mitigation plans. Participate as expert advisor to and on behalf of the customer in various communication planning working groups; review meetings and technical exchanges with vendors and mission partners; ensure knowledge creation/sharing and integration within and across the client’s enterprise. Apply technical expertise to analyze, evaluate, and make recommendations to support integration of fixes, modifications, and enhancements into future and existing operational architecture. Work Environment, Physical Demands, and Mental Demands Inside office/cubicle environment. Requires ability to interact professionally with co-workers and all levels of management. Requires ability to operate a personal computer, a telephone, copier, and other general office equipment. Minimum Requirements (Knowledge, Skills, and Abilities) Active TS security clearance with SCI eligibility is required with adjudication within the last 5 years and the ability to obtain and maintain special accesses. Cisco Certified Network Professional (CCNP) or other equivalent industry certification. 10 or more years’ experience with an emphasis in networking, information technology, along with a strong troubleshooting background in networking and communications equipment. Knowledge and experience with General Dynamics Encryptor Manager (GEM One) software and services. Knowledge and experience with SolarWinds suite of products and tools. A subject matter expert (SME) for Voice, Video and Data Communications Systems. Significant familiarity with High Assurance IP Encryptors COMSEC devices with the ability to demonstrate proficiency in Internet Protocol communications principles, technical analysis, and problem solving. Good communication and time management skills. Position requires limited (5-10%) travel per year. Security Clearance Required TS/SCI – This position requires an active DoD TS/SCI security clearance that has been adjudicated in the last 5 years or designated CE and the ability to obtain and maintain special accesses. Minimum Education BS degree in Engineering, Computer Science, Telecommunications, Project Management, or related discipline. Minimum Years of Experience 15 years Required Certifications Cisco Certified Network Professional (CCNP) or other equivalent industry certification. Cisco Certified Specialist – Enterprise Advanced Infrastructure Implementation. CompTIA IT Security. MS degree in Engineering, Computer Science, Telecommunications, Project Management, or related discipline or 20+ years of Department of Defense (DoD) operational experience with communications‑electronic systems, voice, video, and data networks. Project Management Professional Certification. 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 $235,000 - $265,000 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 07/06/2026 - 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 ( #J-18808-Ljbffr Amentum