Software Test Engineer II

RTX (Raytheon); Tucson (AZ); On-site; USD 90,000 - 120,000; Full time

Job summary

RTX in Tucson, AZ is seeking a Software Test Solutions Engineer to design, code, and integrate software applications and test environments for mission-critical defense systems. You will work with a multidisciplinary team to build robust tools interfacing with state-of-the-art hardware across a full lifecycle.

You will develop system-level software requirements, troubleshoot to ensure high test accuracy, and collaborate with engineers to integrate software tools with hardware instrumentation.

Qualifications

• Advanced STEM degree required by start date.
• Experience developing, testing, or integrating software.
• Experience with Windows applications and Visual Studio.

Responsibilities

• Design, code, and integrate software applications and test software for Windows.
• Develop system-level software requirements and architectural designs.
• Troubleshoot, debug, and optimize software for accuracy and reliability.
• Collaborate with systems, electrical, and mechanical engineers to integrate tools with hardware.

Skills

C/C++

Python

C#

VB/.NET

Education

Master's or higher in STEM

Tools

Visual Studio

Git

Job description

Date Posted: 2026-10-06

Country: United States of America

Location: US-AZ-TUCSON-805 ~ 1151 E Hermans Rd ~ BLDG 805

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

Are you ready to explore the world of aerospace and defense? Do you want to learn from and collaborate with some of the greatest minds in the industry? At RTX, our internships, co-ops and full-time careers provide an exceptional foundation to work on complex problems, advance your skills and create a safer, more connected world. Discover opportunities to make a difference at RTX.

What You Will Do

Join the Test Solutions Engineering team within the Hardware Discipline Center at Raytheon, where we architect and build sophisticated software applications and automated test environments for mission-critical defense systems. In this role, you will develop cutting-edge software solutions that interface directly with state-of-the-art engineering hardware, supporting products across the entire lifecycle-from early lab demonstrations and design verification to high-rate production testing and long-term sustainment. Working alongside a collaborative, multi-disciplinary engineering team, you will design robust tools that ensure our nation's defense technologies perform flawlessly.

Key Responsibilities:

• Design, code, and integrate object-oriented software applications and test software targeting Windows operating platforms.
• Develop and derive system-level software requirements, operational specifications, and architectural designs.
• Troubleshoot, debug, and optimize software applications to ensure rigorous test accuracy, repeatability, and reliability.
• Collaborate closely with systems, electrical, and mechanical engineers to integrate software test tools with specialized hardware instrumentation.
• Participate actively in formal design reviews, code peer reviews, and technical defect resolution.
• Work within structured engineering frameworks applying both Agile and Waterfall development lifecycles.

Qualifications You Must Have

• Advanced degree in Science, Technology, Engineering, or Mathematics (STEM) discipline. Degree must be obtained by start date.
• Experience developing, testing, or integrating software applications using one or more programming languages, such as C, C++, C#, Python, or Visual Basic (VB/VBA/.NET).
• Experience developing, building, and debugging software applications targeting Windows operating systems using the Microsoft Visual Studio integrated development environment (IDE).
• Experience may be obtained through on-the-job experience, research, coursework, or projects.

Qualifications We Prefer

• Demonstrated foundation in software development principles and Object-Oriented Design (OOD/OOP), including encapsulation, inheritance, polymorphism, and modular class structure.
• Experience or coursework utilizing C# or modern C++ in an engineering or laboratory test setting.
• Familiarity with hardware/software interfacing, test automation frameworks, or instrumentation control (e.g., via GPIB, Ethernet, or serial interfaces).
• Hands-on exposure to version control tools (such as Git) and Agile software development practices.
• Strong diagnostic and analytical problem-solving skills applied to complex software/hardware integration issues.

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.

Onsite: Employees who are working in Onsite roles will work 100% 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

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 i