Unified Communications Engineer – Principal

Amentum; Warrenton (VA); On-site; USD 200,000 - 230,000; Full time

Benefits offered by this job

Health insurance

401(k) matching

Educational reimbursement

Parental leave

Stock purchase plan

Job summary

Amentum is seeking a Principal Unified Communications Engineer in the Warrenton, VA area to design and maintain scalable Cisco UC solutions. The role requires a Top-Secret clearance with SCI, 12+ years in telecoms, CCNA and IAT Level II/III certifications, and hands-on experience with UC products and security standards.

You will install, monitor, and optimize VoIP, video, and collaboration platforms, while ensuring integration with AD, servers, and cloud services.

Qualifications

• Active Top-Secret clearance with SCI or ability to acquire SCI.
• 12+ years' telecoms experience with Cisco UC appliances and converged networks.
• CCNA certification and 8140 IAT Level II or III baseline certs required.
• Familiarity with DISA STIGs and FIPS publications.

Responsibilities

• Develop and implement scalable UC solutions with security focus.
• Install and configure VoIP, video, and IM platforms for integration.
• Monitor UC infra performance; perform maintenance and patches.
• Integrate UC with AD and cloud services; ensure interoperability.
• Troubleshoot end-to-end voice/video issues on IP/ISDN networks.
• Provide end-user support and training on UC systems.
• Create detailed documentation and vendor management.
• Develop disaster recovery plans and ensure business continuity.

Skills

Top-Secret clearance

Cisco UC knowledge

VoIP & UC signaling

Critical thinking

Education

High School Diploma

Tools

Cisco IOS

ESXi

Nutanix

Docker

Active Directory

MS SQL

Job description

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 a Principal Unified Communications Engineer 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

Essential Responsibilities

• Develop and implement comprehensive unified communications solutions tailored to the specific needs of the organization, focusing on scalability, security, and optimal performance to ensure long-term effectiveness and adaptability to evolving business requirements
• Install and set up unified communications systems, encompassing VoIP, video conferencing, instant messaging, and collaborative platforms, to ensure seamless integration and efficient functionality across the organization
• Monitor and manage the performance and stability of unified communications infrastructure, proactively identifying and resolving issues, while conducting routine maintenance, updates, and security patches to maintain continuous, optimal operation
• Integrate unified communications systems with other IT components, including network infrastructure, Active Directory, and cloud services, to create a cohesive and efficient technological environment that supports seamless communication and collaboration
• Implement security protocols to safeguard communication channels, data, and endpoints, while adhering to security standards and regulations to maintain a secure and compliant environment
• Offer technical support to end-users, troubleshoot and resolve communication-related issues, and provide training as needed to enhance user proficiency and system effectiveness
• Develop and update comprehensive documentation for unified communications systems, covering configurations, procedures, and best practices to ensure clear guidance and consistency in system management and troubleshooting
• Work closely with vendors and suppliers to acquire hardware, software, and services, while managing vendor relationships to maintain timely delivery, quality, and alignment with organizational needs
• Create and uphold disaster recovery plans and procedures to maintain business continuity in the event of system failures

Minimum Requirements (Knowledge, Skills, and Abilities)

• Must have active Top-Secret clearance with SCI or the ability to acquire Top Secret/SCI
• At least 12 years of telecommunications technical experience installing, administering, and upgrading Cisco Unified Collaboration appliances and troubleshooting converged networks that leverage Cisco UC capabilities to interconnect Cisco, Tandberg, and Polycom endpoints, gateways, and teleconference bridge products
• Knowledge in Cisco Unified Communications Manager, Cisco IM & Presence, Cisco Expressway, Cisco Video Teleconferencing Systems, and Cisco Session Border Controller, Cisco Meeting Server, Cisco Contact Center Express, VQ Conference Manager, Cisco Unity Connect, MS SQL Databases, Integrated Room Video Teleconferencing Control Systems, ELK Stack, and NetScout
• Exceptional knowledge in Cisco Collaboration Call flow and SIP signaling
• Knowledge of network fundamentals such as firewalls, ACLs, simple network monitoring protocol, dot1x authentication, and dynamic routing protocols
• Experience with ESXi Virtualization, Nutanix, Docker.
• Familiarity with DISA STIGs and FIPS publications
• Must have the ability to independently deploy and maintain server-based dial plans, router-based dial plans, and the deployment and management of Cisco UC appliances
• Experience configuring Cisco routers to act as VoIP gateways and demonstrate a strong understanding of Cisco IOS 12.X/15.X command syntax
• Must be able to troubleshoot end-to-end performance issues associated with voice and video conferences involving IP and ISDN networks.
• Must be able to work a 40-hour work week, normally Monday through Friday
• Ability to work overtime during critical peaks and be available to meet last-minute requests for overtime if needed
• Ability to travel (5-10%) primarily within 75 miles
• 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

• High School Diploma

Minimum Years of Experience

• 12 years of relevant experience

Required Certifications

Must possess a current Cisco Certified Network Associate (CCNA) Certification and one of the following 8140 IAT Level II or III baseline certifications:

• Level II certs include – CCNA Security, GISCP, GSEC, Security+ CE, SSCP
• Level III certs include – CASP CE, CCNP Security, CISA, CISSP (or Associate), GCED, GCIH

Preferred Qualifications

• Bachelor’s degree in IT related field
• Foundational knowledge and/or experience with Unified Messaging system, audio conference bridge systems and gateways, voice circuits, and crypto technologies for voice systems
• Cisco Certified Network Professional (CCNP) Certification

#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

$200,000 - $230,000

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

• 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

09/25/2026 - 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.