Senior C# Software Engineer – Test Systems

Company: RTX
Location: Wilsonville
Posted on: April 2, 2026

Job Description:

Date Posted: 2026-03-30 Country: United States of America Location: US-OR-WILSONVILLE-594 ~ 27300 SW Parkway Ave ~ BLDG 594 Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: U.S. citizenship is required, as only U.S. citizens are authorized to access information under this program/contract. Security Clearance Type: None/Not Required Security Clearance Status: Not Required Collins Aerospace is seeking a Senior C# Software Engineer who will play a key role in developing and maintaining high-quality production software in an Agile environment. You will design, implement, and enhance solutions primarily using C# (.NET 6/8), while applying industry best practices throughout the development lifecycle. You will collaborate closely with stakeholders and cross-functional engineering teams to deliver project milestones, provide technical direction, and support program execution and proposal activities. This is an excellent opportunity to contribute to continuous team improvement and knowledge sharing in a collaborative, high-impact setting. Collins Aerospace, an RTX company, is a leader in technologically advanced and intelligent solutions for the global aerospace and defense industry. Collins Aerospace has the capabilities, comprehensive portfolio, and expertise to solve customers’ toughest challenges and to meet the demands of a rapidly evolving global market. Collins Enterprise Values: Trust | Accountability | Respect | Collaboration | Innovation What You Will Do: Develop production software in an Agile environment, primarily using C# (.NET 6/8), WPF/WinForms UIs, async/await services, gRPC/REST APIs, Entity Framework Core, and unit testing (xUnit/NUnit). Support program execution and proposal activities. Design and implement solutions using industry best practices. Collaborate with stakeholders and engineering teams to deliver project milestones and define technical direction. Contribute to team continuous improvement and knowledge sharing. Qualifications You Must Have: Bachelor’s degree in a STEM discipline plus a minimum of 7 years of relevant experience, or a Master’s degree in a related field plus a minimum of 3 years of relevant experience. Demonstrated experience shipping production code in modern C#, including async/await, dependency injection containers, EF Core, WPF/MVVM, and gRPC. Experience working in Agile delivery teams. Proficiency with code repositories, branching strategies, pull requests, and merge processes. Qualifications We Prefer: Bachelor’s or Master’s degree in Computer Engineering, Electrical Engineering, or a related field. Proven ability to mentor team members and drive knowledge transfer. Strong communication, interpersonal, and decision-making skills. Certified LabVIEW Developer (CLD) or Architect (CLA), or equivalent portfolio; experience with LabVIEW Real-Time/FPGA, TestStand, and NI Vision. Experience with MATLAB. Background in aerospace test systems. What We Offer: Some of our competitive benefits package includes: 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! May be eligible for relocation Learn More & Apply Now! Avionics delivers advanced cockpit displays, vision systems, and comprehensive digital solutions for global government, commercial and business aviation customers. We provide connectivity and managed data services to ensure safety and seamless communication for passengers, crews, and militaries, from aircraft and airports to air traffic management. Join us in creating solutions that connect the world, one flight at a time. Start your application today. Onsite: Employees who are working in Onsite roles will work primarily onsite. This includes all production and maintenance employees, as they are essential to the development of our products. Regardless of your role type, collaboration and innovation are critical to our business and all employees will have access to digital tools so they can work with colleagues around the world – and access to Collins sites when their work requires in-person meetings. At Collins, the paths we pave together lead to limitless possibility. And the bonds we form – with our customers and with each other propel us all higher, again and again. Apply now and be part of the team that’s redefining aerospace, every day. 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 86,800 USD - 165,200 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. Privacy Policy and Terms: Click on this link to read the Policy and Terms

Keywords: RTX, Hillsboro , Senior C# Software Engineer – Test Systems, Engineering , Wilsonville, Oregon