MANTECH seeks a motivated, career and customer-oriented Radio Frequency (RF) Expert to join our team working in California, MD. This is a remote position.

The RF Expert will serve as the senior technical authority for Land Mobile Radio (LMR) engineering efforts supporting DoD and public safety mission environments. This role supports the full lifecycle of complex RF communication systems, including requirements development, system architecture, engineering design, integration, testing, performance validation, modernization, and sustainment, across fixed-site, mobile, in-building, and tactical platforms.

Responsibilities include but are not limited to:

• Serve as the senior RF/LMR Technical Lead, providing direct advisory support to government project managers and senior leadership while overseeing large-scale, multi-site system deployments and integration efforts

• Lead the design, engineering, optimization, and lifecycle support of APCO P25 Phase I and Phase II trunked and conventional LMR systems, including simulcast architectures utilizing GPS-disciplined timing and synchronization

• Engineer, implement, and troubleshoot Distributed Antenna Systems (DAS), Bi-Directional Amplifiers (BDA), RF-over-fiber systems, repeaters, combiners, multicouplers, filters, duplexers, antenna systems, and transmission lines to meet defined performance specifications

• Provide multi-band engineering support across VHF, UHF, 700/800 MHz Line-of-Sight (LoS), and High Frequency (HF) Beyond Line-of-Sight (BLoS) communication systems

• Conduct RF propagation modeling, predictive coverage analysis, link budget development, drive testing, site surveys, in-building validation, and RF noise floor analysis to ensure system reliability and performance compliance

• Develop and execute Factory Acceptance Tests (FAT), Site Acceptance Tests (SAT), and formal performance verification procedures with measurable acceptance criteria

• Support spectrum planning, frequency coordination, and regulatory compliance in accordance with FCC, NTIA, and DoD policies

• Develop technical requirements documentation, RFP specifications, engineering evaluation reports, white papers, SOPs, interoperability documentation, and system performance reports while evaluating vendor proposals for compliance and survivability

• Identify technical and programmatic risks, provide mitigation strategies, develop subscriber programming templates and encryption configurations, and mentor junior engineers through structured RF and LMR technical instruction

• Travel up to 20% of the time

Minimum Qualifications:

• High school diploma or equivalent education

• 20+ years of progressive experience in RF engineering and LMR systems

• Experience serving as Technical Lead or RF/LMR SME supporting government programs

• Demonstrated expertise in APCO P25 Phase I and Phase II trunked and conventional system architectures

• Hands-on familiarity with RF diagnostic equipment including spectrum analyzers, service monitors, and network analyzers

Preferred Qualifications:

• Bachelor’s degree in electrical engineering, RF engineering, telecommunications engineering, or related technical field

• Advanced technical training in electronics, RF systems, or telecommunications engineering

Clearance Requirements:

• Must be a U.S. Citizen and possess a current or United States Government Secret security clearance.

Physical Requirements:

• The person in this position must be able to remain in a stationary position 50% of the time.

• Occasionally move about inside the office to access file cabinets, office machinery, or to communicate with co-workers, management, and customers, via email, phone, and or virtual communication, which may involve delivering presentations.