Principle Software Engineer - Test Engineering (Onsite)

Prattwhitney; Cedar Rapids (IA); On-site; USD 108,000 - 205,000; Full time

Benefits offered by this job

Medical, dental, and vision insurance

Three weeks of vacation

401(k) plan with employer matching and

Tuition reimbursement

Student Loan Repayment Program

Life insurance

Disability coverage

Employee Assistance Plan

Job summary

RTX is seeking a seasoned software engineer to design and integrate test software for military hardware test stations. You will work hands-on with test equipment, develop automated tests, and ensure testability from requirements.

Strong collaboration with Systems, Electrical, and Mechanical teams is essential. Ideal candidates have a Secret clearance, a STEM degree with extensive experience (or an advanced degree with related experience), and proficiency in C#, Python, C/C++, Java, and Linux.

Qualifications

• Active and transferable Secret U.S. government clearance is required.
• Degree in Science, Technology, Engineering or Mathematics (STEM) with 8+ years of relevant experience, or an Advanced Degree with 5+ years of experience.
• Experience programming in C# and Python.
• Experience with manual or automated test equipment and test benches.
• Experience in validation, verification, testing, and requirements analysis.
• Experience leading and managing projects.

Responsibilities

• Design, create, and integrate software components for hardware test stations in labs and manufacturing.
• Analyze requirements to ensure testability and develop clear test objectives.
• Develop software for manual and automated test cases to detect defects and increase yields.
• Analyze test results and collaborate with Systems, Electrical, and Mechanical engineering teams.
• Coordinate across multiple programs and mentor junior engineers.

Skills

C#

Python

C/C++

Java

Linux

Test automation

Documentation

Analytical thinking

Communication

Education

STEM degree +8 years experience

Advanced degree +5 years experience

Tools

GIT

SVN

Atlassian tools

Job description

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. Collins Aerospace is a leader in technologically advanced, intelligent solutions that help redefine the aerospace and defense industry. With a comprehensive portfolio and deep technical expertise, we help customers meet the demands of the global market. Join us and help shape the future of aerospace and defense.

Date Posted: 2026-09-15. Location: US-IA-CEDAR RAPIDS-106 ~ 400 Collins Rd NE ~ BLDG 106. 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: Active and existing security clearance required on day 1.

What You Will Do:

• Design, create, and integrate the software components of hardware test stations for factory and engineering labs which include: Work hands on, with test hardware equipment to develop software which 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

Qualifications You Must Have:

• Active and transferable Secret U.S. government issued security clearance is required prior to start date.
• Typically requires a 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 of experience.
• Experience programming in C# and Python languages.
• Experience with manual use or automation of test equipment such as oscilloscopes, network analyzers, digital multimeters, and other equipment.
• Experience in validation, verification, testing, and requirements analysis.
• Experience leading and managing projects.

We Prefer:

• Knowledge of software testing methodologies (functional, integration, regression, performance, etc.) and best practices.
• Experience with bug tracking and test management tools.
• Experience with configuration management tools such as GIT or SubVersion (SVN).
• Experience in networking fundamentals (TCP, UDP, Telnet, etc...).
• Experience in embedded communication protocols (I2C, SPI, UART, etc...).
• Work in an agile environment (SAFe).
• Experience with Atlassian tools suite.
• Knowledge and/or experience in multi-threaded embedded application software engineering development and integration.
• Comfortable working with languages such as C, C++, and Java.
• Experience working in a Linux development environment.
• Attention to detail to identify and document any anomalies or inconsistencies in software performance.
• Strive to consistently produce superior results, keeping project milestones on schedule and contributing to a positive work environment.
• Strong written and verbal communication skills.
• Strong analytical and problem‑solving skills to effectively diagnose and address issues.

What We Offer:

• Medical, dental, and vision insurance
• Three weeks of vacation for newly hired employees
• Generous 401(k) plan that includes employer matching funds and separate employer retirement contribution, including a Lifetime Income Strategy option
• Tuition reimbursement program
• Student Loan Repayment Program
• Life insurance and disability coverage
• Optional coverages you can buy pet insurance, home and auto insurance, additional life and accident insurance, critical illness insurance, group legal, ID theft protection
• Birth, adoption, parental leave benefits Ovia Health, fertility, and family planning
• Adoption Assistance
• Autism Benefit
• Employee Assistance Plan, including up to 10 free counseling sessions
• Healthy You Incentives, wellness rewards program
• Doctor on Demand, virtual doctor visits
• Bright Horizons, child and elder care services
• Teladoc Medical Experts, second opinion program
• And more!

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.

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 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.

RTX is an aerospace and defense company that provides advanced systems and services for commercial, military and government customers worldwide. It comprises three industry-leading businesses – Collins Aerospace, Pratt & Whitney, and Raytheon. Its 195,000 employees enable the company to operate at the edge of known science as they imagine and deliver solutions that push the boundaries in quantum physics, electric propulsion, directed energy, hypersonics, avionics and cybersecurity. The company, formed in 2020 through the combination of Raytheon Company and the United Technologies Corporation aerospace businesses, is headquartered in Arlington, Virginia.