Principal Systems Engineer

Date Posted:

2026-07-29

Country:

United States of America

Location:

US-MA-ANDOVER-AN1 ~ 350 Lowell St ~ AN1 ESSEX BLDG

Position Role Type:

Onsite

U.S. Citizen, U.S. Person, or Immigration Status Requirements:

Active and transferable U.S. government issued security clearance is required prior to start date.​ U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance​

Security Clearance Type:

Secret - Current

Security Clearance Status:

Active and existing security clearance required on 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 Systems Engineering & Test Capabilities team is seeking a highly motivated Principal Systems Engineer to lead technical simulation operations and maintenance support for the Flight Mission Simulator (FMS) used in Patriot test programs. The ideal candidate will have demonstrated experience in system integration and testing. This role offers an exciting opportunity to contribute to cutting-edge missile defense technologies in a collaborative and innovative environment.

What You Will Do

• Provide technical simulation operations and maintenance support for Flight Mission Simulator (FMS) issues and troubleshooting.

• Troubleshoot and resolve simulation hardware issues to maintain mission-capable performance for Patriot programs.

• Provide leadership and technical expertise to Patriot lab personnel and White Sands Missile Range (WSMR) teams.

• Lead onsite activities including integration and test preparation, test execution, data analysis, and issue resolution for other Hardware-in-the-Loop assets.

• Serve as a subject matter expert for root-cause identification and resolution of system anomalies, system performance assessments, and cross-functional engineering coordination to support overall system capability development and checkout.

• Collaborate with team members across multiple engineering disciplines, including Hardware, Software, Mechanical, and Systems Integration and Test.

• Support continuous improvement by identifying hardware issues, troubleshooting effectively, and clearly documenting all actions and steps taken.

• Mentor and support the technical growth of peers and junior engineers, identifying opportunities to enhance team technical acumen.

• Demonstrate strong analytical, technical, and problem‑solving skills.

• Work onsite at our RTX facility in Andover, MA. Occasional second‑shift hours may be required to support testing.

• Travel up to 10% domestically.

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.

• Experience with systems software, systems hardware, systems requirements, systems integration, and/or systems testing.

• Experience working in a test facility, integration lab, depot, and/or field environment.

• Experience developing or troubleshooting simulations, including evaluating Hardware-in-the-Loop (HIL) simulation systems.

Qualifications We Prefer

• Demonstrated ability to lead and manage integrated product teams and interface effectively with the DoD customer community.

• Strong analytical and problem‑solving skills, including hands‑on root‑cause identification, corrective action implementation, and verification.

• Experience identifying and troubleshooting hardware issues and thoroughly documenting all actions taken.

• Proficiency in developing and executing models to predict system performance and support verification and validation.

• Experience with RF test lab equipment (spectrum analyzers, multimeters, power meters, oscilloscopes) and with programming tools such as MATLAB, ADA, Python, C/C++, and Java.

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.

• Relocation assistance is available!

Learn More & Apply Now!

• 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.

• Welcome to Raytheon in Andover, MA

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.

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