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Shield AI

Staff RF Engineer (R5991)

Shield AI is hiring a Staff RF Engineer (R5991) in Seattle, United States. It pays $185k-$275k a year and Level rates it ; you can apply on Shield AI.

Level's read on this job

  • On Level's scale, this role is Little AI ●○○○: aI is not part of the work.
  • The posting mentions Keysight Ads, Cadence Awr and Hfss among its tools and skills.
  • Level classes it as a senior role.
  • Shield AI has 656 other open roles on Level.

AI in this role

Design and deliver compact, high-performance RF modules for airborne and ground intelligent systems.

keysight-adscadence-awrhfsscst
rf-engineeringmicrowave-engineeringpcb-designcircuit-analysis
Shield AI is a venture-backed defense-tech company with the mission of protecting service members and civilians with intelligent systems. Its products include Hivemind autonomy software, V-BAT and X-BAT aircraft, and Aechelon simulation and synthetic reality technologies. With offices and facilities across the U.S., Europe, the Middle East, and Asia-Pacific, Shield AI’s technology actively supports operations worldwide. For more information, visit www.shield.ai. Follow Shield AI on LinkedIn, X, Instagram, and YouTube. 

We are seeking an RF and Microwave Hardware Design Engineer to design and deliver compact, high-performance RF modules for airborne and ground systems. You will own active and passive RF circuits, PCB assemblies, packaging interfaces, laboratory verification, and transition to production. The center of gravity of this position is hands-on module design rather than top-level communications architecture, waveform development, or link-budget ownership. 

 

WHAT YOU’LL DO:

  • Own RF and microwave module designs from requirements and architecture through schematic capture, component selection, layout, bring-up, verification, qualification, and production release. 
  • Design active and passive RF circuits such as low-noise amplifiers, power amplifiers, filters and multiplexers, RF switches, limiters, couplers, attenuators, power detectors, and frequency-conversion stages. 
  • Develop RF front-end assemblies that meet gain, noise figure, output power, linearity, compression, efficiency, harmonic and spurious-emission, stability, isolation, and out-of-band rejection requirements. 
  • Perform circuit and electromagnetic analysis using tools such as Keysight ADS, Cadence AWR, HFSS, or CST, and correlate models with measured hardware performance. 
  • Create and review RF and mixed-signal PCB designs, including controlled-impedance routing, grounding, shielding, stack-up definition, power distribution, and placement of sensitive or high-power components. 
  • Plan and execute laboratory characterization using network analyzers, spectrum analyzers, signal generators, noise-figure analyzers, power meters, oscilloscopes, and automated test equipment. 
  • Diagnose difficult hardware issues involving instability, oscillation, intermodulation, self-interference, desense, thermal drift, mismatch, leakage, and electromagnetic coupling. 
  • Work closely with mechanical, thermal, avionics, communications, antenna, manufacturing, and test engineers to integrate RF hardware into size-, weight-, power-, cooling-, and environmental constraints. 
  • Develop verification methods, production test strategies, calibration approaches, and clear technical documentation that make designs repeatable and manufacturable. 
  • Support environmental and electromagnetic qualification, supplier engagements, hardware integration, ground test, and flight test as needed. 
  • Contribute to design reviews, share technical knowledge, and mentor other engineers at a level appropriate to the position. 
  • Perform other duties as assigned. 
  •                      

REQUIRED QUALIFICATIONS:

  • Bachelor's degree in Electrical Engineering, Applied Physics, or a related field, or equivalent practical experience. 
  • Hands-on experience owning an RF or microwave circuit, module, or PCB assembly through fabrication, bring-up, debugging, and measured verification. 
  • Strong understanding of S-parameters, impedance matching, transmission lines, stability, gain and noise figure, linearity and compression, nonlinear products, isolation, and cascaded RF performance. 
  • Experience creating or reviewing RF PCB layouts with controlled impedance, grounding, shielding, component placement, and signal-integrity considerations. 
  • Proficiency with common RF laboratory instruments and calibration methods, with the ability to distinguish hardware behavior from measurement artifacts. 
  • Ability to use simulation and measured data to make sound design decisions, document tradeoffs, and close requirements with objective evidence. 
  • Clear written and verbal communication skills and the ability to work effectively with cross-functional engineering and manufacturing teams. 
  • Ability to work on-site in a laboratory and hardware-development environment. 
  •              

PREFERRED QUALIFICATIONS:

  • Experience with RF front ends for airborne, defense, space, robotics, or other high-reliability systems. 
  • Experience integrating GaN or GaAs power amplifiers, MMICs, LNAs, switches, limiters, frequency converters, or high-selectivity filter technologies. 
  • Experience designing for simultaneous transmit and receive operation, high-power RF, intermodulation control, adjacent-band rejection, or co-site interference and desense. 
  • Experience with Altium Designer and one or more RF or electromagnetic simulation environments such as ADS, AWR, HFSS, or CST. 
  • Working knowledge of thermal design, RF packaging, connector and cable interfaces, tolerance analysis, and design for manufacturability and test. 
  • Experience with EMI and EMC design and qualification for military or aerospace hardware. 
  • Experience developing automated characterization or data-analysis tools in Python, MATLAB, or a similar environment. 
  • Experience transitioning RF hardware from prototype through qualification and low-rate production. 
  • Ability to obtain a U.S. security clearance, including access at the S/SAR level, if required by the program. 
  •                
Full-time regular employee offer package: Pay within range listed + Bonus + Benefits + Equity   Temporary employee offer package: Pay within range listed above + temporary benefits package (applicable after 60 days of employment)   Salary compensation is influenced by a wide array of factors including but not limited to skill set, level of experience, licenses and certifications, and specific work location. All offers are contingent on a cleared background and possible reference check. Military fellows and part-time employees are not eligible for benefits. Please speak to your talent acquisition representative for more information.   ###   Shield AI is proud to be an equal opportunity workplace and is an affirmative action employer. We are committed to equal employment opportunity regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, marital status, disability, gender identity or Veteran status. If you have a disability or special need that requires accommodation, please let us know. 

How we rate this

Staff RF Engineer (R5991) at Shield AI rates 10 out of 100 for how much of the daily work is AI. That makes it Little AI (AI Level 1 of 4). The level is about AI in the job, not seniority.

Classification

Little AI. AI is not part of the work.

  1. ●●●● Builds AI80 to 100
  2. ●●●○ Works on AI60 to 79
  3. ●●○○ Uses AI40 to 59
  4. ●○○○ Little AI0 to 39

Levels come from how often the tools, models and workflows of the role are named in the posting itself. Read the description and count the AI tools, models and workflows it names.

Prepare for this job

Built from this posting and from similar jobs on Level.

Skills and AI tools this role asks for

Rf EngineeringMicrowave EngineeringPcb DesignCircuit AnalysisKeysight AdsCadence AwrHfssCst

Questions you could be asked

  1. Tell me about a project where rf engineering was part of your work. What did you do?
  2. Tell me about a project where microwave engineering was part of your work. What did you do?
  3. Tell me about a project where pcb design was part of your work. What did you do?
  4. Tell me about a project where circuit analysis was part of your work. What did you do?
  5. Walk me through how you've used Keysight Ads in your day-to-day work.

Adapt your resume

  • List these exact terms on your resume: Rf Engineering, Microwave Engineering, Pcb Design, Circuit Analysis, and Keysight Ads. An applicant tracking system matches the wording, not the idea.
  • Attach one line of real, concrete experience to at least one of them. A tool named with nothing behind it rarely survives a human read.

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