Design Engineer III

at Neotech in Naperville, Illinois, United States Job Description 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. To view full details and how to apply, please login or create a Job Seeker account