Principal Software Test Engineer - Active Secret; Onsite

Salary Range

$107,500 USD – $204,500 USD

• Design, create, and integrate the software components of hardware test stations for factory and engineering labs
• Work hands‑on with test‑hardware equipment to develop software that tests military communication hardware products during the build and manufacturing process
• Analyze and understand requirements to ensure testability
• Develop clear and concise test objectives that guide the testing process and ensure comprehensive coverage
• Write software for both manual and automated test cases, with an objective to detect manufacturing defects, improve product quality, and increase manufacturing yields
• Analyze test results for failures and discrepancies
• Work closely with other test engineers and product developers to verify product hardware is built correctly
• Coordinate and collaborate with Systems, Electrical, and Mechanical engineering disciplines
• Help manage work across multiple programs
• Mentor, lead, and review work for lower‑level engineers

• Typically requires a STEM degree and a minimum of 8 years of relevant experience, or an advanced degree and a minimum of 5 years of experience
• Active and transferable U.S. government‑issued security clearance required prior to start date
• U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance
• 3+ years of experience programming in C# and Python
• 3+ years of experience with manual use or automation of test equipment such as oscilloscopes, network analyzers, digital multimeters, and other equipment
• 3+ years of experience in validation, verification, testing, and requirements analysis
• Prior experience leading and managing projects

• Strong communication, analytical, and problem‑solving skills
• Experience with SCPI commands, bug tracking, and test management tools
• Knowledge of software testing methods (functional, integration, regression, performance)
• Proficiency with Git/Subversion, Atlassian tools, and Agile (SAFe) environments
• Background in networking (TCP, UDP, Telnet) and embedded protocols (I2C, SPI, UART)
• Experience with Linux development and multi‑threaded applications in C, C++, or Java
• High attention to detail with a track record of delivering quality results

• Medical, dental, and vision insurance
• Three weeks of vacation for newly hired employees
• Generous 401(k) plan with employer matching and a Lifetime Income Strategy option
• Tuition reimbursement program
• Student loan repayment program
• Life and disability coverage
• Optional coverages: pet, home, auto, additional life and accident, critical illness, group legal,  protection
• Birth, adoption, and parental leave benefits (including Ovia Health, fertility, and family planning)
• Adoption assistance and autism benefit
• Employee assistance plan with up to 10 free counseling sessions
• Wellness incentives, doctor‑on‑demand, virtual visits, Bright Horizons, child and elder care services, Teladoc, and more

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. RTX provides affirmative action for qualified individuals with a disability and protected veterans in compliance with applicable laws.