Senior Principal Software Security Engineer - S3E
Company: RTX
Location: Tucson
Posted on: April 1, 2026
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Job Description:
Date Posted: 2026-03-02 Country: United States of America
Location: US-AZ-TUCSON-801 ~ 1151 E Hermans Rd ~ BLDG 801 (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 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. Software Security Sensors and
Effectors (S3E) Department is looking to hire a Senior Principal
Software Security Engineer in Tucson, AZ. Raytheon Tucson, AZ
Location Our Culture | RTX Careers What You Will Do: Our mission is
to provide world class Security Software to be used in deployed
missile systems. This position requires understanding of real-time
software design and the performance implications associated with
specific System Security implementations. Involve with application
and embedded software design, development, integration, and testing
of real-time missile software. Apply System Security principles to
the design and implementation of Missile software applications.
Develop software applications using C and C++ languages on a
variety of computing platforms Understand real-time software design
and the performance implications associated with specific System
Security implementations. Able to understand how position's efforts
affect the “big picture” of the missile system and be able to
develop or review detail solutions at the source code level. Work
closely with the Systems Security Engineering team to define and
implement requirements. Work in a common development environment to
support and facilitate program ability to leverage specific
capabilities. Interface with customer community to review technical
design and support verification of system maturity. Qualifications
You Must Have: Typically requires a Bachelor’s in Science,
Technology, Engineering, or Mathematics (STEM) AND a minimum of 10
years of relevant software experience Experience with C / C++
Experience with Xilinx UltaScale MPSoC, Versal, or similar Embedded
Processors Experience with embedded OS like VxWorks, Embedded
Linux, or similar Embedded Software Security experience The ability
to obtain and maintain an interim Secret U.S. security clearance is
required prior to start date. U.S. citizenship is required, as only
U.S. citizens are eligible for a security clearance. Qualifications
We Prefer: Experience with validation and verification of software
applications Experience/Knowledge of any of the following:
Linux/Unix environment Interfacing with FPGAs Interfacing with
low-level memory drivers Inter-processor communication ARM
Architecture Secure boot concepts Crypto graphic Algorithms
Experience designing, implementing, testing, or fielding real-time
security-oriented solutions on Department of Defense (DoD) programs
(embedded experience highly preferred) Experience using
security-relevant tools and devices for security auditing, network
security, host/server security, communication security, or policy
management. Experience in Agile and DevSecOps environments
Experience in an Agile/Scrum/Kanban frameworks and development
environments Experience using software configuration management and
bug tracking tools Experience with Python / Perl Knowledge of
modern computer architectures and hardware technologies including:
PCIe, GPIO, I2C, SATA Field Programmable Gate Arrays (FPGAs)
Application-Specific Integrated Circuits (ASICs) What We Offer:
Whether you’re just starting out on your career journey or are an
experienced professional, we offer a robust total rewards package
with compensation; healthcare, wellness, retirement and work/life
benefits; career development and recognition programs. Some of the
benefits we offer include parental (including paternal) leave,
flexible work schedules, achievement awards, educational assistance
and child/adult backup care. “Tucson is Awesome”:
https://www.youtube.com/watch?v=i65wOwKcNIQ “Winter in Tucson”:
https://www.youtube.com/watch?v=yZdKKkF0QkE Learn More & Apply Now!
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 Location
Information: This position is onsite at our campus in beautiful
Tucson, AZ. Tucson has a friendly, caring, and laid-back
atmosphere, combined with the innovation and energy of a
metropolitan region, and recognized as one of America’s 10 Best
Small Cities. Surrounded by beautiful mountains, colorful Sonoran
Desert landscape and majestic saguaro cacti, Tucson is blessed with
some of nature’s best work. Tucson is known for its bright blue
skies, and with more than 310 sunny days per year, Tucson’s
fantastic weather lets residents enjoy the outdoors year-round.
TucsonSoftware 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 132,400 USD - 251,600
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
Keywords: RTX, Chandler , Senior Principal Software Security Engineer - S3E, IT / Software / Systems , Tucson, Arizona
