{"id":3541250,"url":"https://alion.io/job/fathom4-radio-frequency-engineer","title":"Radio Frequency Engineer","company":{"id":4423427,"name":"Fathom4","domain":"fathom4.com","url":"https://alion.io/company/fathom4","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"JobScore","truth_index":null},"role":"Industrial Engineering","role_family":"Industrial Engineering","seniority":null,"employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Charleston, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":61000,"max_usd":143000,"period":"year","method":"role_country_seniority_unknown","sample_n":15150},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Ansys HFSS","optional":true},{"name":"Keysight ADS","optional":true},{"name":"Link 16","optional":true},{"name":"MATLAB","optional":true},{"name":"MIL-STD-461","optional":true},{"name":"Python","optional":true},{"name":"Simulink","optional":true}],"status":"live","first_seen_at":"2026-10-30T14:53:31Z","employer_posted_date":"2026-10-30","last_verified_at":"2026-11-02T14:44:46Z","board_verified":true,"closed_at":null,"days_open":3,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":3},"description":"Security Clearance Statement:This position requires a government security clearance; you must be a US Citizen for consideration.\nSUMMARY\nWorks as part of an engineering team to analyze, design, integrate, and test radio frequency (RF) communications and C5ISR systems for DoD customers. Supports the full system lifecycle, from requirements and RF analysis through installation, test, and sustainment at shore sites and on mobile and fixed platforms. Collaborates with government engineers, program offices, and external stakeholders, and prepares technical reports, briefs, and test documentation. May provide technical direction to junior engineers and technicians.\nRESPONSIBILITIES:\nRF systems engineering for military communications systems (e.g., HF/VHF/UHF, SATCOM, line-of-sight data links, and tactical radios).\nPerform RF analyses including link budgets, propagation and coverage studies, interference analysis, and antenna selection and placement.\nSupport RF integration, installation, and site surveys, including antenna, transmission line, and RF distribution design.\nPlan and conduct RF test and troubleshooting using laboratory and field test equipment; document results and recommend corrective actions.\nSupport electromagnetic interference / electromagnetic compatibility (EMI/EMC) and spectrum supportability activities.\nDevelop and review technical documentation, including requirements, design and installation drawings, test procedures, and reports.\nMINIMUM REQUIREMENTS:\nEDUCATION\nBachelor’s degree in Electrical Engineering or Electrical and Computer Engineering, with coursework or a concentration in RF, microwave, electromagnetics, antennas, or communications systems. Candidates without formal RF coursework will be considered if they have equivalent professional RF engineering experience.Engineering degrees shall be from an Accreditation Board for Engineering and Technology (ABET) accredited program (see www.abet.org). Note: Technology degrees do not qualify as Engineering or Physical Science Degrees.\n\nEXPERIENCE\nWe will entertain varying years of professional engineering experience involving hands-on design, analysis, integration, or test of RF communications systems or components.\nPractical experience with standard RF test equipment such as spectrum analyzers, vector network analyzers, signal generators, and power meters.\nExperience with RF simulation software and setting up and conducting studies.\nCLEARANCE\nCurrent active Secret, with reasonable expectation of eligibility for a TS/SCI with CI Polygraph clearance in the future.\nREQUIRED SKILLS:\nSolid working knowledge of RF fundamentals: transmission lines, impedance matching, antennas, noise, modulation, and propagation.\nAbility to perform and document link budgets and RF performance calculations.\nAbility to read and interpret schematics, block diagrams, and installation drawings.\nUnderstanding of test, verification, and system integration within a systems engineering context.\nAbility to communicate effectively with non-technical stakeholders, translating complex technical issues into clear recommendations and actionable tasks.\nStrong problem-solving skills and the ability to learn new systems and tools quickly.\nFamiliarity with DoD cybersecurity and configuration management practices.\nLOCATION:\nThe work location is on-site at North Charleston, SC, with 10-20% travel expected for site surveys, installations, and testing. Some travel may be OCONUS.\nADDITIONAL DESIRED SKILLS AND EXPERIENCE (these are a Plus)\nMaster’s degree in Electrical Engineering with an RF, microwave, or communications focus.\nRF modeling and simulation tools (e.g., Keysight ADS, Ansys HFSS, CST Studio, MATLAB/Simulink) or propagation/coverage tools (e.g., Remcom Wireless InSite, ATDI HTZ, or similar).\nExperience with SATCOM terminals (e.g., MUOS, commercial Ku/Ka-band) or tactical data links (e.g., Link 16).\nSoftware-defined radio (SDR) experience (e.g., GNU Radio, Ettus USRP) or scripting for test automation (e.g., Python).\nEMI/EMC testing experience, including familiarity with MIL-STD-461 and MIL-STD-464.\nShipboard, vehicle, or shore-site C5ISR installation experience, including NAVSEA or NIWC installation processes.\nElectronic Warfare (EW), Signals Intelligence (SIGINT), or spectrum management experience.\nEQUAL OPPORTUNITY EMPLOYER:\nFathom 4, LLC. is an equal opportunity employer that does not discriminate in employment. 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