RF Electrical Engineer; ONSITE

Collins Aerospace, an RTX company, is seeking a RF Electrical Engineer to join the Hardware Engineering Center (HWEC) in Marlborough, MA. The role focuses on designing and testing RF and Microwave electronic hardware—frequency references, synthesizers, up converters/exciters, down converters/receivers, low‑noise amplifiers, and solid‑state power amplifiers—up to 50 GHz for satellite communication and radar systems. Candidates must hold an active U.S. Secret clearance and be U.S. citizens.

• Provide recommendations and solutions to a variety of technical problems of appropriate scope and complexity.
• Work independently or in small groups.
• Perform design tasks using RF simulation tools.
• Accept a requirement specification and then develop, simulate, document, support, debug, and test RF/Microwave circuit or board level designs up to 50 GHz with first‑pass success.
• Travel domestically up to 5% as required.

• Experience simulating microwave circuits (including component & PCB parasitics).
• Ability to learn to design, simulate, and test RF circuits up to 50 GHz using tools such as ADS and CST.
• Experience with RF/Microwave building blocks: amplifier, ADC/DAC, attenuator, D/A, DDS, directional coupler, frequency mixer, band‑pass filters, oscillator, power divider, RF switch, VCO.
• Understanding of RF/Microwave concepts: dB, dBc, dBm, bandwidth, gain, gain compression, gain flatness, intermodulation, isolation, return loss, spurious, third‑order intercept, VSWR.
• Experience with RF/Microwave test equipment: network analyzer, spectrum analyzer, signal generator, RF power meter, oscilloscope.
• Typically requires a STEM degree and at least 2 years of prior relevant experience, or an advanced degree.

• Medical, dental, and vision insurance.
• Three weeks of vacation for newly hired employees.
• Generous 401(k) plan with employer matching and a separate employer retirement contribution.
• Tuition reimbursement program.
• Student loan repayment program.
• Life insurance and disability coverage.
• Optional additional coverages: pet insurance, home and auto insurance, additional life and accident insurance, critical illness insurance, group legal,  protection.
• Birth, adoption, parental leave benefits.
• Ovia Health, fertility and family planning.
• Adoption assistance.
• Autism benefit.
• Employee assistance plan with up to 10 free counseling sessions.
• Healthy You incentives, wellness rewards program.
• Doctor on Demand, virtual doctor visits.
• Bright Horizons, child and elder care services.
• Teladoc Medical Experts, second opinion program.
• Eligible for relocation assistance.
• And more!

Do you want to be a part of something bigger? At Collins Aerospace, our Mission Systems team helps civilian, military, and government customers complete their most complex missions—whatever and wherever they may be. Our customers depend on us for intelligent and secure communications, mission‑ized systems for specialized aircraft and spacecraft, and collaborative space solutions. By joining our team, you’ll have your own critical part to play in ensuring our customers succeed today while anticipating their needs for tomorrow.

Are you up for the challenge? Join our mission today.

Employees who are working in Onsite roles will work primarily onsite. This includes all production and maintenance employees, as they are essential to the development of our products.

As part of our commitment to maintaining a secure hiring process, candidates may be asked to attend select steps of the interview process in person at one of our office locations, regardless of whether the role is designated as on‑site, hybrid or remote.

RTX is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability or veteran status, or any other applicable state or federal protected class. RTX provides affirmative action in employment for qualified Individuals with a Disability and Protected Veterans in compliance with Section 503 of the Rehabilitation Act and the Vietnam Era Veterans’ Readjustment Assistance Act.