Full-Time

Principal Software Test Engineer

Posted on 7/10/2026

RTX

RTX

10,001+ employees

Manufactures jet engines, avionics, missiles

Compensation Overview

$118.3k - $224.9k/yr

+ Annual incentive compensation

No H1B Sponsorship

Goleta, CA, USA

In Person

US Citizenship, US Top Secret Clearance Required

Bachelor's

Category
QA & Testing (1)
Required Skills
Agile
Software Testing
JIRA
Jenkins
DevOps

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Requirements
  • A degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 8 years of prior relevant experience are typically required.
  • Experience setting up, configuring, and connecting test scenarios using target hardware, input and driver devices, and data collection systems is required.
  • Team leadership experience, including managing people, budget, and schedules, is required.
  • Lab experience in product testing using logic analyzers, high-speed oscilloscopes, signal generators, and system-on-chip debugging tools, or similar, is required.
  • The ability to obtain and maintain a Secret U.S. government-issued security clearance is required, and U.S. citizenship is required.
Responsibilities
  • Lead and participate with a Software Test team.
  • Derive testing requirements from System and Software development specifications.
  • Design and implement test configurations for various stages of hardware and software development.
  • Physically install and connect equipment and software to establish and maintain the test environment, updating it as needed.
  • Create test plans to demonstrate compliance with software specifications.
  • Execute test plans and document results.
  • Prepare and submit documentation in accordance with the Contractor Data Requirements List.
  • Produce planning and technical work products for internal customers to form original solutions to complex problems.
  • Manage the budget and schedule for testing as Test Team Leader.
  • Interact with Hardware, Electrical, and Systems disciplines, as well as other team leaders and senior technical staff, to ensure the completeness and success of software testing.
  • Engage with a fast-paced and dynamic product development environment.
Desired Qualifications
  • Ability to drive results and coordinate with Software, Hardware, and Systems teams and agile processes.
  • Experience developing technical documents for internal and customer distribution.
  • Familiarity with object-oriented programming languages, software design, integration, and test.
  • Familiarity with embedded microprocessor design, system-on-chip software design, field-programmable gate arrays, high-speed transceivers, DDR, flash memories, block diagrams, signal analysis or signal generation, and real-time operating systems.
  • Existing Secret security clearance.
  • Electronic Warfare Electronic Attack/Electronic Support, Radar, or Secure Communications technology knowledge.
  • Familiarity with software tools such as Jenkins and Jira, DevSecOps, interfaces, and bus standards.
  • Experience with scripting and test automation.

RTX produces jet engines, cockpit electronics, and avionics through Pratt & Whitney and Collins Aerospace, and develops defense systems and missiles via Raytheon. Pratt & Whitney engines provide propulsion for commercial and military aircraft, while Collins Aerospace supplies flight controls, navigation, and integrated cockpit systems, and Raytheon offers missiles, radar, and sensing technologies. The company differentiates itself by offering a single, integrated portfolio that spans both commercial aviation and national defense under one corporate umbrella, drawing on the legacy of Raytheon and UTC. Its goal is to help customers fly more efficiently and protect nations by advancing propulsion, electronics, and defense technologies for civilian air travel and security needs.

Company Size

10,001+

Company Stage

IPO

Headquarters

Arlington, Virginia

Founded

2022

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Simplify Jobs

Simplify's Take

What believers are saying

  • Raytheon’s five February 2026 Pentagon frameworks expand Tomahawk, AMRAAM, and SM-6 output.
  • RTX raised 2026 sales guidance to $95 billion-$96 billion after strong Q2 execution.
  • HADALUS demonstrated in August 2026, proving Raytheon’s low-cost long-endurance unmanned undersea capability.

What critics are saying

  • Pratt & Whitney’s GTF defects triggered Airbus damages claims in March 2026.
  • ITA Airways threatened suit in June 2026 over grounded A320neo engines and €150 million damage.
  • If GTF remediation slips, Airbus and airlines keep diverting orders, crushing Pratt growth.

What makes RTX unique

  • RTX’s $289 billion backlog funds defense scale while commercial aerospace absorbs volatility.
  • Raytheon won a $22.9 billion Tomahawk contract on August 17, 2026.
  • GTF Advantage reached EASA certification in April 2026 and enters service this year.

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Benefits

Health Insurance

Dental Insurance

Vision Insurance

Life Insurance

Disability Insurance

401(k) Company Match

401(k) Retirement Plan

Flexible Work Hours

Remote Work Options

Paid Vacation

Paid Sick Leave

Paid Holidays

Parental Leave

Family Planning Benefits

Fertility Treatment Support

Adoption Assistance

Employee Assistance Plan

Wellness Program

Gym Membership

Tuition Reimbursement

Student Loan Assistance

Home Office Stipend

Phone/Internet Stipend

Short-term Disability

Long-term Disability

Employee Scholar Program

Three weeks of vacation for newly hired employees

Generous 401(k) plan that includes employer matching funds

Ovia Health, fertility, and family planning

Bright Horizons, child and elder care services

Doctor on Demand, virtual doctor visits

Teladoc Medical Experts, second opinion program

Growth & Insights and Company News

Headcount

6 month growth

5%

1 year growth

5%

2 year growth

5%
PR Newswire
Sep 4th, 2026
Pratt & Whitney invests $25M to expand Poland manufacturing, adding 120 jobs

RTX's Pratt & Whitney is investing $25 million to expand its manufacturing facility in Niepołomice, Poland. The site produces complex tubular assemblies for commercial and military engines. The expansion, supported by the Polish government through the Polish Investment Zone Programme, will add more than 120 jobs when it becomes operational in 2028. The facility currently manufactures precision components for multiple engine types, including the GTF engine for commercial aircraft and the F135 for F-35 fighter aircraft. This investment is part of Pratt & Whitney's $125 million commitment to Polish facilities this year, including a $100 million investment in Rzeszow. Poland represents RTX's largest investment base outside the United States, with more than 9,500 employees across its businesses in-country.

Yahoo Finance
Aug 30th, 2026
RTX's $289B backlog: 60% commercial aerospace strengthens defense business flexibility

RTX's $289 billion backlog splits 60% commercial aerospace and 40% defence, a combination that benefits both divisions. The commercial segment's strong profitability allows the defence business to avoid risky fixed-price development contracts that have troubled competitors like Boeing and Lockheed Martin. This flexibility enabled RTX to terminate an unfavourable classified programme in 2024, taking a $575 million charge rather than pursuing losses. CEO Chris Calio said the contract fell outside the company's core competencies and predated RTX's formation. The arrangement works both ways. Defence earnings supported RTX through a costly powder metal coating issue affecting its geared turbofan engine. The structure allows RTX to focus on established defence solutions like Patriot missiles whilst maintaining investment in commercial aerospace during downturns.

PR Newswire
Aug 17th, 2026
RTX's Raytheon wins $22.9B contract to accelerate Tomahawk missile production

Raytheon, an RTX business, has secured a seven-year, $22.9 billion contract from the US Navy to accelerate production of Tomahawk cruise missiles. The agreement, part of the Department of War's Arsenal of Freedom initiative, will support ramping annual production to over 1,000 missiles. RTX has already tripled Tomahawk deliveries in the first half of 2026 compared to the same period in 2025. The contract will enable the company to expand capacity and work with hundreds of suppliers nationwide to scale output. Tomahawk cruise missiles provide long-range strike capabilities, allowing the Navy to target hostile forces from hundreds of miles away across multiple launch platforms.

PR Newswire
Aug 10th, 2026
RTX's Raytheon demonstrates new unmanned undersea vehicle with 2,000 nautical mile range

Raytheon, an RTX business, and Composite Energy Technologies have successfully demonstrated HADALUS, a new unmanned undersea vehicle, during a US Navy exercise. The 34-foot UUV completed at-sea missions whilst submerged, marking the first time the Navy has witnessed this integrated capability in water. HADALUS features a carbon-fibre design with over 2,000 nautical miles of endurance. The vehicle costs roughly one-third to one-fifth of comparable long-endurance vehicles. The companies progressed from conceptual sketch to working prototype in under 18 months. The demonstration showcased the UUV's ability to perform detect, reacquire, and engage functions within a single mission. "By tightly coupling design, integration and at-sea experimentation, we've proven we can bring new autonomous solutions to the fleet quickly and cost-effectively," said Jen Gauthier, vice president at Raytheon.

Yahoo Finance
Aug 3rd, 2026
RTX's Raytheon installs first SPY-6(V)4 radar array at Wallops Island for US Navy destroyer upgrade

Raytheon, an RTX business, has installed the first SPY-6(V)4 radar array at the Surface Combat Systems Center at Wallops Island, Virginia. The installation marks a milestone for the US Navy's Flight IIA Destroyer modernisation programme. The land-based test facility will support radar testing and power system integration before installation on USS Pinckney (DDG 91), the first ship scheduled for the SPY-6(V)4 backfit from late 2026 to 2028. Testing will begin later this year and continue through mid-2028. SPY-6 variants are already onboard two commissioned Navy ships, with 11 additional vessels undergoing testing. Over the next decade, more than 50 Navy ships are expected to deploy SPY-6 radars. Raytheon has invested $800 million in manufacturing facilities and aims to double production by 2028.

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