Senior 5G & Mission Partner Environment (MPE) Systems Engineer

CACI • Fort Belvoir, VA

12d • Onsite

About The Position

CACI is seeking an experienced, action-oriented Senior 5G & Mission Partner Environment (MPE) Systems Engineer to join our team supporting the Army DCS, G-6, Network Command Control Communications, and Computers (C4) Services Integration (NC4SI) Directorate. In this high-visibility role, you will act as the bridge between strategic discussions and tangible execution for the Army's enterprise-level IT initiatives. You will work directly with the customer to capture their intent, help architect strategic courses of action, and independently produce the high-quality staff work required to drive mission success.

Requirements

• Must have TS/SCI clearance.
• Bachelor’s degree or higher in a technical, IT, or related field.
• Minimum of 10 years of DoD progressive experience in wireless network architecture, telecommunications systems engineering, or mobile network operations.
• Deep technical expertise in 3GPP 5G standards (including Release 15/16/17 and emerging 6G), cellular core networks, and RF spectrum management.
• Ability to produce clear, concise, and succinct staff products.
• You must be able to translate technical concepts into actionable insights and present them confidently to senior leaders.
• Proven experience advising and collaborating directly with military leaders (O-6 and above) and SES personnel.
• Proven hands-on experience with wireless broadband infrastructure, enterprise deployments, and zero-trust cybersecurity architectures applied to mobile networks.

Nice To Haves

• Joint Staff, Army/Service Headquarters, or OSD experience at the O-4/O-5 (or equivalent) level or above—specifically in roles requiring heavy staff work and brief production.
• Comprehensive understanding of the Army Unified Network Plan (AUNP) and tactical network capabilities at the division and echelon-above-corps levels.
• Direct experience testing, piloting, or deploying O-RAN Alliance-compliant software and decoupled hardware solutions in secure settings.
• Familiarity with Coalition Joint All-Domain Command and Control (CJADC2) and specific MPE data sharing standards, data centric security (DCS), and cross-domain technologies.

Responsibilities

• Support the DCS G-6 in providing technical oversight, synchronization, and governance across all Army 5G experimentation and installation pilot programs.
• Guide the deployment of Private 5G Networks and Open Radio Access Network (ORAN) architectures tailored to military installation security and performance needs.
• Ensure Army 5G data operates securely within DoD-assigned spectrum frequencies and design commercial architectures that support neutral hosting and multi-operator core networks.
• Drive joint interoperability initiatives to securely synchronize Army command centers with Joint and Multi-National forces (e.g., INDOPACOM, EUCOM, CENTCOM).
• Design technical solutions that cross security domains (Cross Domain Solutions) to ensure secure, real-time data flows between legacy military communication networks and commercial 5G systems.
• Represent G-6 equities in Joint, DoD, and international military telecommunications forums to align Army requirements with overarching defense strategies.
• Assess, mitigate, and continuously monitor 5G vulnerabilities within military infrastructure to shield networks from sophisticated national security threats.
• Partner with DISA and US CYBERCOM to help deploy advanced continuous monitoring capabilities for non-commercial, government-transiting 5G packet streams.

Benefits

• flexible time off
• robust learning resources
• competitive compensation
• benefits and learning and development opportunities
• comprehensive benefits such as; healthcare, wellness, financial, retirement, family support, continuing education, and time off benefits.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior