Principal Software Engineer with Test Solutions

RTX; San Jose (CA); On-site; USD 108,000 - 205,000; Full time

Job summary

RTX is seeking a Principal Software Engineer with Test Solutions in Tucson, AZ. You will design and maintain software for production and engineering test equipment, collaborating with multidiscipline teams to support weapon system product development.

The role emphasizes on-site work, mentoring junior engineers, and delivering robust software in Windows environments using Visual Studio.

Qualifications

• Bachelor’s degree in STEM with 8+ years of experience or advanced degree with 5+ years.
• Experience developing software in C#, C++, Java, Python or Visual Basic.
• Experience using IDEs and debugging tools to ensure software integrity.

Responsibilities

• Design, develop, and integrate object-oriented software in C#, C++, and other languages.
• Prioritize and manage multiple software tasks concurrently.
• Troubleshoot software and test equipment instrumentation.

Skills

C#

C++

Java

Python

Visual Basic

Education

Bachelor’s Degree in STEM

Advanced degree in related field

Tools

Microsoft Visual Studio

Job description

Date Posted:

2026-10-22

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 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.

This position is 100% onsite in Tucson, AZ

Test Solutions (TS) within the Hardware Engineering Discipline, is a multi-discipline organization responsible for developing Production and Engineering test equipment solutions for all Raytheon products. We are hands-on designers using the latest technology and tools and integrating state-of-the-art software solutions with the most advanced engineering systems in the world. TS products are in engineering labs, in the field, and in factories and production testing environments utilized for testing weapon system products. TS has job opportunities across all phases of the engineering lifecycle, including demonstrations, early engineering tests, design verification tests, production, and post-production sustainment.

The Principal Software Engineer with Test Solutions position is focused on the design, development, integration, and maintenance of software as a part of on-site factory support of systems to support weapon system product development. The selected candidate will develop applications, libraries, and instrument drivers using the software style, development language, and integrated development environment specified by the organization.

The selected candidate will contribute to multidiscipline engineering teams. Typical work involves the development of both engineering and production equipment, environments, and systems. As such, the candidate will contribute to the completion of all stages of product development for RMD weapon system products. They will be expected to work, either as a part of a team or independently, to design, develop, and implement system level applications in support of producing and maintaining weapon system products.

What You Will Do:

• Design, develop and integrate object-oriented software applications using C#, C++ in Microsoft Visual Studio in a Windows Operating System (OS)
• Prioritize and handle multiple software engineering tasks concurrently
• Troubleshoot software and test equipment instrumentation
• Work in a multidiscipline engineering team environment
• Develop and derive requirements for software products
• Lead and mentor junior software engineers

Qualifications You Must Have:

• Typically requires a Bachelor’s Degree in Science, Technology, Engineering, or Mathematics (STEM) and minimum 8 years prior relevant experience, or an Advanced degree in a related field and minimum 5 years experience.
• Experience in developing and integrating software applications using programming languages including but not limited to C++, C#, Java, Python or Visual Basic.
• Experience in utilizing integrated development environments and debugging tools to troubleshoot software implementation and ensure integrity of the software products.
• Prior experience in Windows Operating System and Microsoft Visual Studio is required.
• The ability to obtain and maintain a U.S. government issued security clearance is required. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance.

Qualifications We Prefer:

• Prior experience in laboratory test instrumentation, electronics, and software (Ex. oscilloscopes, power supplies, digital multimeters)
• Experience with computer architecture and computer hardware optimization techniques
• Experience of the development of software drivers for the operation of computer hardware interfaces
• Experience in common computer hardware interface and data protocols such as TCP/IP, UDP, or RS-422
• Experience with Unified Modeling Language (UML) to visualize software architecture and design
• Experience in software development lifecycles, such as Waterfall and Agile
• Experience with Software Configuration Management principles
• Experience with Microsoft Azure DevOps Server or GitHub
• Written and interpersonal communication skillsExperience in leading teams/projects in a technical capacity

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.

This position requires onsite work in Tucson, AZ: https://careers.rtx.com/global/en/raytheon-tucson,-az-location

#TestEngineering

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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