Job Information
Neotech Design Engineer III in Naperville, Illinois
We are seeking an experienced RF Designer to lead the design, development, and validation of high-frequency circuits and systems for demanding applications including aerospace, defense, industrial, and medical products. This role requires deep expertise in RF/microwave design, PCB materials, and system integration, along with the ability to work in a customer-facing environment.
Key Responsibilities
Design and develop RF and microwave circuits including amplifiers, filters, mixers, oscillators, and antennas
Perform schematic capture, simulation, and layout of high-frequency PCBs
Select and apply advanced RF materials (e.g., Rogers laminates such as RO4350B, RO4003C, RT/duroid series)
Conduct RF simulation using tools such as:
Keysight ADS
Ansys HFSS
Cadence AWR Microwave Office
Optimize impedance matching, signal integrity, and EMI/EMC performance
Develop RF test plans and perform lab validation using VNAs, spectrum analyzers, and signal generators
Collaborate with PCB layout, mechanical, and manufacturing teams to ensure design for manufacturability (DFM/DFA)
Interface directly with customers to define requirements, present designs, and support technical reviews
Support prototype builds, troubleshooting, and production ramp-up
Qualifications
Required Qualifications
Bachelor’s or Master’s degree in Electrical Engineering or related field
8+ years of experience in RF/microwave design
Strong understanding of transmission lines, impedance matching, S-parameters, and EM theory
Hands-on experience with RF test equipment (VNA, spectrum analyzer, power meters)
Experience designing multilayer RF PCBs and working with controlled impedance structures
Familiarity with high-frequency PCB materials and stack-up design
Preferred Qualifications
Experience with mmWave or high-frequency (>10 GHz) designs
Knowledge of hermetic and high-reliability packaging techniques
Experience with LTCC, hybrid circuits, or module-level RF design
Familiarity with military and aerospace standards (MIL-STD, IPC Class 3)
Experience designing for harsh environments (temperature, vibration, radiation)
Key Skills
RF circuit simulation and modeling
Signal integrity and power integrity analysis
PCB layout guidance for RF performance
Debugging and root cause analysis
Strong communication and customer interaction skills
Due to ITAR and / or CUI compliance, this position requires candidates to be a U.S. Citizen.
Benefits Offered: Comprehensive benefit package including medical, dental and vision coverage; company-paid basic life/AD&D insurance, short-term and long-term disability insurance; voluntary supplemental insurances, flexible spending accounts and employee assistance program (EAP). Sick Leave, Vacation Time, and company-paid Holidays are also provided as paid time off. NEOTech also provides a 401(k) Retirement Savings Plan option with a company match.
NEOTech is an Equal Opportunity/Affirmative Action employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex including sexual orientation and gender identity, national origin, disability, protected Veteran status, or any other characteristic protected by applicable federal, state, or local law.
NEOTech has a long-standing commitment to maintaining a safe, quality-oriented and productive work environment. We also want all employees to perform their duties safely and efficiently, in a manner that protects their interests and those of their co-workers. We recognize that alcohol and drug abuse pose a threat to the health and safety of NEOTech employees and to the security of the Company’s equipment and facilities. For these reasons, NEOTech is committed to the elimination of drug and alcohol use and abuse in the workplace. Candidates being considered for hire must pass a pre-employment background check and drug test which include screening for illegal drugs and marijuana.