RF Engineer, Senior in Huntsville

Sim Tech, Inc., recognized as one of the 2026 Best Places for Working Parents
, is seeking an RF Engineer, Senior to join our dynamic and diverse team in Huntsville, AL.

Sim Tech offers a market leading compensation package with excellent benefits, work/life balance, outstanding retirement plan, career advancement and much more.

• Support the characterization, analysis, and development of advanced RF signal systems for aerospace, defense, and sensor applications.
• Design, develop, and evaluate RF and microwave systems, subsystems, and hardware components supporting RF sensor and seeker technologies.
• Perform RF system analysis, modeling, prototyping, integration, and testing throughout the product development lifecycle.
• Develop and validate RF hardware designs including transmitters, receivers, frequency conversion circuits, filters, amplifiers, oscillators, and antenna‑related components.
• Conduct laboratory and field testing of RF/microwave hardware and systems to verify performance against design requirements.
• Utilize RF test equipment including Vector Network Analyzers (VNA), Spectrum Analyzers, Signal Generators, Power Meters, Oscilloscopes, and related instrumentation.
• Perform antenna and system characterization testing in anechoic chamber environments.
• Collect, reduce, and analyze test data to assess system performance, identify deficiencies, and recommend corrective actions.
• Compare measured performance data against theoretical predictions, simulation results, and system requirements.
• Troubleshoot RF hardware, test setups, and system integration issues to identify root causes and implement solutions.
• Support system integration activities with multidisciplinary engineering teams including systems, software, mechanical, and test engineers.
• Prepare technical reports, test plans, procedures, engineering analyses, and customer presentations.
• Participate in design reviews and provide technical recommendations to improve system performance and reliability.
• Support field demonstrations, customer evaluations, and government test events as required.
• Maintain compliance with applicable industry standards, customer requirements, and security protocols.
• Other responsibilities as assigned.

• Bachelor of Science degree in Electrical Engineering, Computer Engineering, Physics, or a related technical discipline.
• Minimum of 8 years of experience in RF, microwave, radar, electronic warfare, communications, or related RF engineering fields.
• Comprehensive knowledge of RF and microwave theory, components, circuits, and system architectures.
• Experience designing, developing, testing, and integrating RF/microwave systems and hardware.
• Proficiency in RF laboratory testing and measurement techniques.
• Experience using RF test equipment including Vector Network Analyzers, Spectrum Analyzers, Signal Generators, Oscilloscopes, and Power Meters.
• Experience analyzing RF performance parameters such as gain, noise figure, dynamic range, sensitivity, linearity, phase noise, and frequency response.
• Ability to interpret test data, identify performance issues, and develop effective engineering solutions.
• Strong analytical, troubleshooting, and problem‑solving skills.
• Excellent written and verbal communication skills.
• Ability to work independently and collaboratively in laboratory, manufacturing, and field test environments.
• U.S. Citizenship with Active Secret Security clearance and ability to maintain the designated security clearance level is required.

Employees in these positions will function in a general office/cubicle setting environment, and laboratory/testing setting using standard office equipment and various electronic testing equipment, including a computer, telephone, printers, video equipment, computer software, and testing equipment. Will interact in a general office setting environment with various personnel; participate in meetings and contribute to team success; deliver timely results and produce reports;

receive and communicate information; may include telework. May function in a specialized laboratory/testing environment using…