C-UAS RF Engineer

RF Engineer III - C-UAS Network Communication System (NCS)

Locations: Huntsville, AL ,Alexandria, VA. Telecommuting may be available.

Clearance: Active Secret with the ability to obtain a Top Secret security clearance.

This position is contingent upon contract award.

Leidos is seeking an RF Engineer III to design, analyze, and test RF communication links for the Army’s Counter-UAS (C-UAS) Network Communication System (NCS). You'll ensure secure, reliable RF connectivity supporting M-LIDS and FS-LIDS systems used in Short-Range Air Defense (SHORAD) missions.

This role spans RF link design, propagation modeling, EW threat mitigation, RF hardware integration, and field testing-working closely with systems, software, and cybersecurity teams in an Agile environment.

• Perform RF link budget analysis
  , propagation modeling, and spectrum assessments.
• Design RF links/waveforms supporting secure, reliable tactical data transmission.
• Integrate RF hardware (radios, antennas, transceivers) with secure network architecture.
• Mitigate interference, jamming, and EW threats
  ; design anti-jam/frequency-agile approaches.
• Optimize RF link latency, throughput, and reliability for remote monitoring/control.
• Support RF testing, EMI/spectrum compliance, and field/range evaluations.
• Provide RF input to RMF/ATO security requirements and assessments.
• Present RF analysis and recommendations at TIMs; maintain RF sections of system documentation.

• Bachelors in EE/RF/Communications Engineering + 8+ years RF engineering experience.
• Current Secret clearance with the ability to obtain a Top Secret clearance.
• Experience with RF link analysis, propagation modeling, and spectrum planning.
• Hands-on RF hardware/system design and integration.
• Familiarity with EW threats and anti-jam RF design.
• Experience with RF test tools (spectrum/network analyzers, signal generators).
• Knowledge of DoD cybersecurity and spectrum management requirements.
• Strong RF technical writing and ability to brief government stakeholders.

• Experience with C-UAS/SHORAD/LIDS systems.
• RF integration for fielded tactical systems (M-LIDS/FS-LIDS).
• Experience with MATLAB/System Vue or similar RF modeling tools.
• SDR/waveform development experience.
• Military/federal spectrum coordination experience.
• Agile/Scrum engineering experience.

September 9, 2026

Pay Range $ - $

Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit

Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.