Principal Lead Systems Engineer (Onsite)

Date Posted:

2026-07-14



Country:

United States of America



Location:

US-AZ-TUCSON-810 ~ 1151 E Hermans Rd ~ BLDG 810 (External Site)



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:

DoD Clearance: Secret



Security Clearance Status:

Ability to obtain INTERIM U.S. government issued security clearance is required prior to start date

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.

As part of the ESSM program, you will be an integral part of helping Raytheon further our vision to be the global leader in core and next-generation weapon and security solutions. We pride ourselves on developing world-class talent in an inclusive atmosphere. The result is a workforce that takes pride in the company and consistently delivers superior solutions.

The ESSM portfolio is hiring a Principal Lead System Engineer (LSE) to join the leadership of the Development and/or Production programs.  The ESSM LSE will be responsible for the identifying and technical execution of projects across Raytheon ESSM and supporting the Chief Engineer (CE) in helping define and maintain the appropriate level of technical rigor and coordination across functions and engineering disciplines across the various efforts within the program.  The LSE is also one of the senior technical interfaces with internal and external customers, industry partners, contractors, suppliers, and other stakeholders.

The ideal candidate will have leadership experience leading multiple project teams of varying size and scope.  The candidate will also need to demonstrate multidiscipline engineering knowledge as well as development and production lifecycle understanding.  The LSE is expected to provide technical and career mentorship and apprenticeship opportunities to program engineers.  Role includes understanding of both missile and integration/launcher aspects, with expectation to work with the launcher team located on the Portsmouth, RI to coordinate development, integration and sustainment activities.

What You Will Do

• Work across leadership, engineering and shared services to help ensure strategy and execution alignment

• Coordinate efforts across multiple disciplines and program efforts, to include coordination with external customer entities

• You will interpret missile, launcher, and other combat system requirements and objectives into actionable direction to the program and supplier teams to maintain a balance of margin and producibility

• You will provide program leadership to the Cross Product Teams and Integrated Product Teams and many collaborative partners from Engineering, Operations, Mission Assurance, and Global Supply Chain

• Maintain positive employee and team experiences by creating an environment that supports positive team health as well as providing guidance and management to ensure goals are met

Qualifications You Must Have

• Typically requires a Bachelor’s in Science, Technology, Engineering, or Mathematics (STEM preferred) and a minimum of 8 years of prior engineering experience.

• Leadership experience of large and diverse cross-functional teams across the development and transition to production lifecycle: system design, requirements development, management, and verification, system integration and test, and production of complex system architectures

• Experience developing work plans and driving program/team execution

• Experience working with leaders and customer community stakeholders to influence and guide the development of production program projects

Qualifications We Prefer

• Ability to develop a fault tree and knowledge point plan

• Master's degree in Systems Engineering or related discipline

• Experience in Digital Engineering, Model Based Systems Engineering or other model-based tools to capture systems and processes

• Experience in development and production programs

• Demonstrated experience in shipboard missile system architectures and products

• Communication, technical writing, oral presentation, and interpersonal skills

• History developing others through teaching, mentorship, and apprenticeship

• Raytheon Level 4 Certified Lead System Engineer or participant in the Lead System Engineer Development Program (LSEDP)

• The ability to receive multiple Special Access Program (SAP) clearances to support the program is desired. This can be demonstrated by current or prior clearances to SAPs

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 Eligible – 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.

• This position requires a security clearance. DCSA Consolidated Adjudication Services (DCSA CAS, an agency of the Department of Defense, handles and adjudicates the security clearance process. More information about Security Clearances can be found on the US Department of State government website here: https://www.state.gov/m/ds/clearances/c10978.htm 

• This position is an onsite role – Tucson, AZ : https://careers.rtx.com/global/en/raytheon-tucson,-az-location

• We Are RTX

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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