**Date Posted:** 2025-03-18 **Country:** United States of America **Location:** VA111: 1300 N 17th Street, Arlington 1300 North 17th Street Suite 400, Arlington, VA, 22209 USA **Position Role Type:** Hybrid BBN Technologies solves challenging problems of high importance to our customers in the Department of Defense, the Intelligence Community and Industry by rapidly prototyping systems for sensing complex physical phenomena, correlating them to events of interest, and producing high-value, actionable information from the sensed data. Our team specializes in developing next-generation sensor system technologies by combining a fundamental understanding of the underlying EM physics including complex electromagnetic interactions and signatures, and propagation phenomenology, with a deep expertise in analysis, statistical signal processing, optimization, and machine learning We are currently searching for a highly qualified RF Signal Processing Research Scientist to join our team in Arlington, VA or Columbia, MD. Desirable candidates will have experience deriving and implementing research-grade algorithms and applying these to data collected from real sensors. Qualified candidates will have academic or professional experience in several of the areas listed below. We have an immediate need for synthetic aperture radar (SAR) expertise. **What You Will Do** + The position requires routine onsite presence at our Arlington, VA or Columbia, MD offices. + Statistical signal processing: + Estimation techniques including Bayesian and non-Bayesian estimators, performance measures such as bias and mean-square error and bounds on estimator performance such as the Cramer-Rao lower bound. + Detection techniques including the Neyman-Pearson detection, probabilities of detection and false alarm, receiver operating curves, etc. + Cyclostationary signal processing: + CAF, SCF, SOF estimation. + Computation of Cyclic Cumulants. + Cyclic Feature Detection. + Adaptive signal processing: + Temporal and space-time adaptive processing. + Interference covariance estimation techniques including both structured and reduced-rank techniques. + Wiener filtering and on-line adaptive techniques such as LMS and RLS. + Kalman filtering, particle filtering, and multi-hypothesis tracking. + Machine learning and optimization for optimal control. + RF propagation and signature modeling: + Link budgets, terrestrial and free-space propagation models, multipath, non-stationary propagation environments (Doppler spread), clock stability and phase noise, and target kinematics. + Antenna pattern estimation. + Estimation of bistatic RCS. + Sensing: + Sparse array processing, beamforming, direction finding, filtering and tracking. + Range-Doppler radar and synthetic aperture radar (SAR). + Signal classification and recognition. + Physical-layer communications: + Modulation techniques and tradeoffs, channel estimation and tracking, MIMO communications, equalization, forward error correction and decoding. + LPX waveform design. + Multi-user detection. **Qualifications You Must Have** BS Electrical Engineering, Mathematics, or Physics plus 8+ years of relevant experience, or MS with 5+ years experience or Ph.D. plus 3+ years experience. Experience with signal processing, including estimation, detection, etc. Experience with RF modeling and sensing. Ability to obtain a government security clearance. **Qualifications We Prefer - Familiar with all, Expert in some** + Position may require some overnight travel. + Experience applying advanced methods, theories, and R&D techniques to solve difficult problems. + Skillset to tackle research challenges proactively with minimal supervision and periodic check-ins with team leads. + Experience leading small teams of technical contributors. + Experience documenting plans and scientific findings with opportunities to present to government customers. + An active government security clearance. **What We Offer** Whether you’re just starting out on your career journey or are an experienced professional, we offer a robust total rewards package with compensation; healthcare, wellness, retirement, and work/life benefits; career development and recognition programs. Some of the benefits we offer include parental (including paternal) leave, flexible work schedules, achievement awards, educational assistance and child/adult backup care. • Relocation Assistance available • This position is Onsite at our Arlington, VA or Columbia, MD offices. **To help you achieve your goals, BBN will provide** + A strong leadership team well-versed in government R&D. + A collaborative and collegial environment to push state-of-the-art research. + A diverse and technically competent pool of research scientists who are willing to mentor, listen, and help you refine your research vision and goals. + Business development, programmatic, contracting, finance, and HR support. + Access, through RTX, to opportunities that help transition your research and ultimately see it fielded. RTX Corporation is an Aerospace and Defense company that provides advanced systems and services for commercial, military and government customers worldwide. It comprises three industry-leading businesses – Collins Aerospace Systems, Pratt & Whitney, and Raytheon. Its 185,000 employees enable the company to operate at the edge of known science as they imagine and deliver solutions that push the boundaries in quantum physics, electric propulsion, directed energy, hypersonics, avionics and cybersecurity. The company, formed in 2020 through the combination of Raytheon Company and the United Technologies Corporation aerospace businesses, is headquartered in Arlington, VA. The salary range for this role is 112,000 USD - 224,000 USD. The salary range provided is a good faith estimate representative of all experience levels. RTX considers several factors when extending an offer, including but not limited to, the role, function and associated responsibilities, a candidate’s work experience, location, education/training, and key skills. Hired applicants may be eligible for benefits, including but not limited to, medical, dental, vision, life insurance, short-term disability, long-term disability, 401(k) match, flexible spending accounts, flexible work schedules, employee assistance program, Employee Scholar Program, parental leave, paid time off, and holidays. Specific benefits are dependent upon the specific business unit as well as whether or not the position is covered by a collective-bargaining agreement. Hired applicants may be eligible for annual short-term and/or long-term incentive compensation programs depending on the level of the position and whether or not it is covered by a collective-bargaining agreement. Payments under these annual programs are not guaranteed and are dependent upon a variety of factors including, but not limited to, individual performance, business unit performance, and/or the company’s performance. This role is a U.S.-based role. If the successful candidate resides in a U.S. territory, the appropriate pay structure and benefits will apply. RTX anticipates the application window closing approximately 40 days from the date the notice was posted. However, factors such as candidate flow and business necessity may require RTX to shorten or extend the application window. _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._ **Privacy Policy and Terms:** Click on this link (http://www.rtx.com/privacy/Job-Applicant-Privacy-Notice) to read the Policy and Terms Raytheon Technologies is An Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status, age or any other federally protected class.