Principal Engineer - Site Development & Integration

Date Posted: 2026-06-08 Country: United States of America Location: US-MA-MARLBOROUGH-MA1 ~ 1001 Boston Post Rd ~ BLDG 1 Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: The ability to obtain and maintain a U.S. government issued security clearance is required.​ U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance Security Clearance Type: DoD Clearance: Secret Security Clearance Status: Active and existing security clearance required after day 1 At RTX, the world's largest aerospace and defense company, 185,000 great minds are united by purpose and inspired to make a difference solving the world’s most complex problems. With our three market leading businesses, world-class operations and investments in research and development, we offer capabilities and opportunity no one else can. Together, we push the boundaries of known science and find new ways to connect and protect our world. Raytheon brings the strength of more than 100 years of experience and renowned engineering expertise to meet the needs of today’s mission and stay ahead of tomorrow’s threat. We deliver solutions that help our nation and allies defend freedoms and deter aggression, creating a safer, more secure world. Join us and help shape the future of aerospace and defense. The Tactical Radars and Effectors department within Raytheon Hardware Engineering supports the development, production, and deployment of multiple defense products including radars, missiles, command and control systems, and naval electronics. The products support US Government and international customers. The Tactical Radars and Effectors department is seeking a Principal Mechanical Engineer to provide Site Development and Integration (SD&I) expertise. The SD&I section performs large scale, complex site development and onsite support. Engineers will perform research, design, support construction and development of military and commercial facilities. The position is for the Marlborough, Massachusetts location. This position is an onsite role. What You Will Do Develop, revise, and maintain AutoCAD drawings, models, and designs from verbal directions, hand drawn sketches, and existing hard copy drawings. Use preliminary sketches, diagrams, and other engineering information to generate conceptual layouts for notional facility systems using CAD tools such as Autocad, and Revit. Support site surveys for facility infrastructure solutions. Develop facility requirements and design development documents for defense system equipment in accordance with system requirements. Work with Architect/Engineering (A/E) contractors facility design effort. Review and approve shop drawings and construction specifications. Document and manage action items, field issues, and change requests including coordination with home office engineering, equipment suppliers, and onsite teams. Collaborate and coordinate work activities with Raytheon, Government, and subcontractors. Extensive knowledge of DOD codes and standards, including Unified Facility Codes (UFC’s) for site installations. Travel is expected to be 20% both domestically and internationally. Travel could include multiple-week duration trips. Qualifications You Must Have Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 8 years of prior relevant experience or An Advanced Degree in a related field and minimum 5 years’ experience. Experience leading a team with cost and schedule responsibilities. Experience working across multiple product lifecycle stages of a radar production program. Experience working across multiple functional and discipline organizations to successfully resolve technical challenges. Experience with the use of drafting software including Revit and AutoCAD. Experience with building codes for commercial, industrial and military/Department of Defense (DoD) facilities. The ability to obtain and maintain a U.S. government issued security clearance is required. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance. Qualifications We Prefer Advanced degree in mechanical engineering, manufacturing engineering, or hardware system design. Experience working with and developing Facility Requirement Documents. Comfortable working in a high energy environment with multiple concurrent and quick-turn deadlines. Willingness to learn and desire to overcome challenges to achieve individual and team success. Strong written and oral communication. Strong attention to detail and orientation to produce high quality work products. Capable of using spreadsheet, word processing and standard Microsoft software. Ability to work with and collaborate with a multi-disciplinary team. What We Offer Our values drive our actions, behaviors, and performance with a vision for a safer, more connected world. At RTX we value: Safety, Trust, Respect, Accountability, Collaboration, and Innovation. Please consider the following role type definition as you apply for this role. Onsite: 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. Relocation Offered Based On Eligibility. Learn More & Apply Now! 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. The salary range for this role is 107,500 USD - 204,500 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 to read the Policy and Terms Raytheon