IT Site Design Specialist at Amentum in Warrenton, VA

IT Site Design Specialist
Location: US-VA-Warrenton
Purpose and Impact:
In support of a challenging, critical, and rewarding program that provides integrated voice, video, and data services throughout the Information Technology lifecycle, Amentum is seeking an IT Site Design Specialist to join our dynamic team of IT professionals dedicated to fostering a positive and collaborative work environment. You must be a critical thinker, have a strong work ethic, and be able to work independently or as a member of a team in a dynamic environment. We value candidates who are detail-oriented while also being able to think and react quickly to emerging and unique problem sets. To be successful, you must be able to rapidly adapt and learn how to operate the front and back end of new products and processes.
Work Schedule:
5 Days (Mon – Fri); 8 hrs/Day; 40 hrs/wkly
Ability to work overtime during critical peaks and be available to meet last-minute requests for overtime if needed.
Ability to travel up to 25% annually; CONUS (multi-day travel).
Essential Responsibilities:
The duties and responsibilities of the IT Site Design Specialist include, but are not limited to the following:
Collaborate effectively across a multidisciplinary team including engineers, architects, cybersecurity specialists, and stakeholders to analyze requirements, designing scalable and secure network architectures aligned with Organizational goals and cybersecurity standards.
Contribute to the development and sustainment of infrastructure, systems, and data architecture by supporting both logical and physical design efforts, ensuring alignment between conceptual models and deployed environments while promoting consistency, scalability, and interoperability across enterprise systems and platforms.
Serve as a technical subject matter expert in producing high-fidelity network documentation using Microsoft Visio, translating complex operational and engineering requirements into clear, detailed visuals such as topology diagrams, rack elevations, and network boundary definitions while ensuring accuracy, standardization, and usability for design validation, implementation, and ongoing support
Conduct comprehensive physical and logical site surveys to assess and validate existing network infrastructure, identify gaps or discrepancies, and update legacy documentation to accurate “As-Built” status, ensuring current configurations are clearly documented and aligned with operational, engineering, and compliance requirements
Maintain rigorous configuration control and governance over Enterprise Architecture artifacts by ensuring version accuracy, enforcing traceability across changes, and upholding standardized processes and compliance requirements to preserve integrity, accountability, and alignment with enterprise policies and objectives.
Demonstrate a strong understanding of DoW IT infrastructure, on-premise hosting environments, and organizational structures to effectively align technical solutions with operational frameworks, support informed decision-making, and ensure network designs and integrations are compatible with existing enterprise capabilities and governance models.
Minimum Requirements (Knowledge, Skills, and Abilities):
Must have active Top-Secret clearance with SCI or TS with the ability to acquire SCI
Must have at least 5 years of relevant experience
Experience in enterprise architecture analysis, evaluation, design, development, integration, IT infrastructure, or network engineering.
Technical Tools: advanced expertise in Microsoft Visio, including the use of custom stencils, layers, and data-linked diagrams.
Infrastructure Mastery: Working knowledge of DoW/DoW IT infrastructure environments, including networks, hosting environments, enterprise services, and operating within secure boundaries.
Cybersecurity Standards: Familiarity with DoW cybersecurity requirements, including Risk Management Framework (RMF), NIST, Zero Trust principles, and secure system designs.
Data & System Modeling: Experience developing data and system reference models.
Experience supporting DoW programs, including familiarity with DoW IT service delivery standards.
Familiarity with MS Office applications such as Excel, Word, Outlook, SharePoint, Project, and Visio.
Exceptional attention to detail; excellent verbal and written communication skills; strong critical thinking, organizational, time-management, and problem-solving skills.
Ability to work both independently and as part of a team in a dynamic environment.
Security Clearance Required:
Must have active Top-Secret clearance with SCI or TS with the ability to acquire SCI
Minimum Education:
Associates or bachelor’s degree in IT related field
Minimum Years of Experience:
5 years of relevant experience
Required Certifications:
Must possess one of the following 8140 IA Technical Level II or III baseline certifications:
Level II certs include – CCNA-Security, CySA+, CND, Security+ CE
Level III certs include – CASP CE, CCNP, CISA, CISSP (or Associate)
Preferred Qualifications:
Networking IT experience with on-premises environments
Familiarity with ServiceNow
ITIL 4 Foundation/Master
#javelin
This 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:
$110,000 - $125,000
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:
07/24/2026 - 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.