Principal Hardware Design Engineer

Position Details Location: US-MA-TEWKSBURY-TB1 ~ 50 Apple Hill Dr ~ ASSABET BLDG Date Posted: 2026-06-26 Role Type: Onsite Security Clearance: Secret (U.S. citizenship required; must obtain interim U.S. government‑issued security clearance prior to start date) Responsibilities Circuit and sub‑system architecture, design, modeling, simulation, and verification. Integration and test at component, circuit card assembly, and subsystem levels. Transition to production and technical support to manufacturing and test engineers. Occasional travel to supplier, integration, and customer sites may be required. Opportunities to manage small projects or processes within area of responsibility. 1st shift role, 100% on‑site, based in either Tewksbury, MA or Marlborough, MA, with travel between multiple MA sites anticipated. Qualifications You Must Have Science, Technology, Engineering or Mathematics (STEM) degree and a minimum of 8 years of prior relevant experience. Combined experience in two or more of the following areas: Digital Design (Requirements development through Build and Test) RF/Analog Design (Requirements development through Build and Test) Production testing and troubleshooting circuits Design simulation tools (e.g., HyperLynx, LTSpice) and analytical tools (e.g., Matlab) Design development tools (e.g., Mentor Graphics' Xpedition schematic capture and layout) Leadership of a complete design or small team to complete a design Ability to obtain and maintain an Interim Secret U.S. government‑issued security clearance prior to start date; U.S. citizenship required. Qualifications We Prefer Experience interfacing and testing with digital to analog converters (D/A) and analog to digital converters (A/D). Experience with digital high‑speed interfaces such as JESD204B, Memory (DDR3, DDR4), SERDES, 10G+ Ethernet, Fiber Channel. Background in FPGA hardware inference designs including SERDES, LVDS chip‑to‑chip and board‑to‑board. Understanding of allocating and flowing down requirements from the system to the component level. Knowledge of cost estimating, budget, and schedule management. Experience working in a laboratory environment using logic analyzers, oscilloscopes, phase noise analyzer (PNA), and spectrum analyzer to test and verify the functions of digital and mixed‑signal circuits and systems. Experience in a production environment. Experience in technical writing, proposal writing, and oral presentations. Active / Existing Secret U.S. Security Clearance. Benefits Relocation support based on candidate eligibility. 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. Potential eligibility for annual short‑term and/or long‑term incentive compensation programs based on position level and collective‑bargaining agreement. Salary 107,500 USD - 204,500 USD Equal Opportunity Employer 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. #J-18808-Ljbffr