Principal Engineer, Actuation Systems Embedded Software

Raytheon; Tucson (AZ); On-site; USD 108,000 - 205,000; Full time

Benefits offered by this job

Medical benefits

401(k) match

Paid time off

Job summary

Raytheon in Tucson, AZ is seeking an embedded software/firmware engineer to design and verify high‑performance actuation systems for missile guidance and stabilization. The role focuses on motor control firmware, C/C++ development, and collaboration across EE, ME, control systems, and safety teams.

You will work onsite in US locations including Tucson, with a strong emphasis on rigorous engineering practices, documentation, and safety standards.

Qualifications

• University Degree in STEM with 8+ years of experience, or an advanced degree with 5+ years.
• Experience with C/C++ on embedded hardware platforms.
• Experience with MATLAB/Simulink for model development.
• Experience with safety-critical coding standards such as MISRA-C and test/verification practices.

Responsibilities

• Specify, design, verify, and integrate motor control embedded firmware.
• Implement digital control algorithms in C/C++ with the Controls and Algorithms team.
• Collaborate with electrical, mechanical, control systems, test, and safety engineers to solve complex problems.

Skills

C/C++ embedded

MATLAB/Simulink

Firmware development

Digital control

Team collaboration

Education

STEM degree

Advanced degree

Tools

GIT

Subversion

VHDL

FPGA firmware

Job description

Location

US-AZ-TUCSON-M10 ~ 3360 E Hemisphere Loop ~ BLDG M10

Date Posted

2026-08-18

Country

United States of America

Location

US-AZ-TUCSON-M10 ~ 3360 E Hemisphere Loop ~ BLDG M10

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 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.

The PCAS department is seeking an embedded software/firmware engineer to support development of a range of high-performance actuation systems, such as aerodynamic steering, thrust vectoring, attitude and divert maneuvering, pointing, and stabilization of missile systems & subsystems.

This is an onsite role

Tucson, AZ or Huntsville, AL or Portsmouth, RI

What You Will Do

• You will help specify, design, verify, and integrate motor control embedded firmware for current and future precision control actuation systems.
• You will implement digital control algorithms in C/C++ in conjunction with the Controls and Algorithms team.
• Day-to-day the candidate will be expected to apply sound engineering practices to address technical problems while collaborating with a team including electrical engineering, mechanical engineering, control systems engineering, test engineering, systems safety engineering, and others.

What You Will Learn

• Hands-on opportunity with firmware integration and verification testing in a laboratory environment is plentiful, thus enabling firsthand knowledge of system function and performance.
• The position will rely on fundamental understanding of C/C++, MATLAB/Simulink, and working with electrical and mechanical hardware.

Qualifications You Must Have

• Requires a University Degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 8 years of prior relevant experience or an advanced degree and a minimum of 5 years of prior relevant experience
• Experience with systems engineering design and/or development or experience working in a disciplined, controlled manner, fully documenting work; extensively commenting code, test benches and test software.
• Experience with C/C++ development on embedded hardware platforms or similar.
• Experience with model development and/or data analysis in MATLAB/Simulink.

Qualifications We Value

• Advanced degree in Aerospace Engineering, Control Systems Engineering, Mechanical Engineering, Electrical Engineering, Physics or Computer Science
• Experience developing firmware or software for safety significant environments including requirements development and traceability, design decomposition and documentation, static code analysis, design to safety critical coding standards such as MISRA-C, test case development, code coverage including modified decision/code coverage (MC/DC), code coverage analysis and formal qualification testing.
• A working understanding of configurable logic (FPGA firmware) and VHDL.
• Experience implementing digital control algorithms in hardware including embedded microcontrollers, digital signal processors, FPGAs and a working understanding of serial communication interfaces, analog to digital converters, and PWM generators.
• Experience working with and integrating hardware.
• Knowledge of actuation communication busses; UART, SPI, and I2C protocols; electromechanical actuators (using gears, ballscrews, leadscrews etc); position sensors; electronic controllers and power amplifiers; test equipment
• Basic understanding of modeling and controls of electric motors and solid background in PMSM motor fundamentals
• Digital and analog signal electronics design, development and verification.
• Use of software/firmware configuration management tools such as GIT, Subversion or similar tools
• Ability to work hands-on in teams and to articulate, in both oral and written form, to technical, non-technical and management audiences
• Motivation to continue developing and learning on-the-job skills

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 Eligibility

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.