Principal Systems Engineer - MBSE

Raytheon; Tewksbury (MA); On-site; USD 107,500 - 204,500; Full time

Benefits offered by this job

Medical, dental, and vision insurance

401(k) match

Paid time off

Flexible work schedules

Job summary

Raytheon is hiring a Principal Systems Engineer located in Tewksbury, MA. This role involves developing systems for space and military applications, requiring collaboration across disciplines to resolve challenges.

Candidates must have a Bachelor’s in STEM and 8+ years of engineering experience. The estimated salary range is between $107,500 and $204,500.

Qualifications

• 8+ years of prior engineering experience essential.
• Experience with systems integration and/or systems test is a plus.
• Experience with Gears Feature Based variation management tools.

Responsibilities

• Develop requirements and algorithms, concepts of operations, system trades, and system interfaces.
• Develop and maintain SysML descriptive system models.
• Interface with cross functional teams to guide subsystem development.

Skills

Systems requirements

Systems software

Systems hardware

DOORs

MBSE

UML/SysML

Cameo / MagicDraw

Python

Java

Matlab

Education

Bachelor’s in Science, Technology, Engineering, or Mathematics (STEM)

Job description

Location

US-MA-TEWKSBURY-TB3 ~ 50 Apple Hill Dr ~ CONCORD BLDG, Tewksbury Tb3, 300 Concord

Date Posted

2026-07-01

Country

United States of America

Position Role Type

Onsite

Immigration and Clearance 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 Raytheon, the foundation of everything we do is rooted in our values and a higher calling – to help our nation and allies defend freedoms and deter aggression. We bring 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. Our team solves tough, meaningful problems that create a safer, more secure world.

Are you passionate about turning innovative concepts into reality? Do you thrive in dynamic environments? Raytheon is seeking a talented and motivated Principal Systems Engineer to join our team within the Systems Engineering and Test Capabilities (SETC) Discipline, supporting development of complex inertial guidance systems for space and military applications.

Every day will bring new challenges, requiring you to collaborate across disciplines to troubleshoot issues, perform data analysis, and implement solutions. Your contributions will directly impact the success of mission‑critical defense systems, and you’ll have a hands‑on role in ensuring the entire system functions seamlessly.

What you will do

• Core Systems Engineering: Develop requirements and algorithms, concepts of operations, system trades, and system interfaces.
• Model Based Systems Engineering (MBSE): Develop and maintain detailed SysML descriptive system models, linking and synchronization of requirements, and generate design documentation / views.
• Interface with cross functional teams, such as Electrical and Software engineering, to help guide subsystem development and ensure compliance with requirements throughout the entire product lifecycle.
• Conduct and/or support technical peer reviews and provide constructive feedback; Document and provide technical guidance to other members of the design team.
• Communicate technical topics and issues in a clear and concise manner to both technical peers and non‑technical team members.

Qualifications You Must Have

• Typically requires a Bachelor’s in Science, Technology, Engineering, or Mathematics (STEM) and a minimum of 8 years of prior engineering experience.
• Experience with systems requirements, systems software, and systems hardware; experience with systems integration and/or systems test is a plus.
• Experience with DOORs, MBSE, UML/SysML, and/or Cameo / MagicDraw.

Qualifications We Prefer

• Strong analytical, communication, and writing skills.
• Experience in requirements development, design, verification, and validation.
• Experience syncing and tracing requirements between DOORs and SysML modeling tools such as Cameo / MagicDraw.
• Experience managing trade studies and design decisions.
• Experience in all phases of development: concept, requirements, design, implementation, and test.
• Experience supporting design reviews during all phases of development.
• Experience with Gears Feature Based variation management tools.
• Experience with DXL scripting.
• Experience with Python, Java or Matlab.
• Radar architecture and/or algorithms knowledge.
• Self-starter with the ability to independently pursue information and solve problems.
• 5 years of experience with Systems/Software Engineering Product Development Cycle.

This role is based out of our Tewksbury MA location.

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.

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 medical, dental, vision, life insurance, short‑term and 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.