Senior C# Software Engineer – Test Systems

Date Posted:

2026-04-20

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.

What You Will Learn:

Cutting-edge avionics architectures – Develop in-depth knowledge of Avionics Optics, sensors and systems used in commercial and next-generation aircraft platforms.

Technical leadership & process innovation – Lead test strategy development, mentor junior engineers, drive test-time reduction initiatives, and influence process improvements

Career-defining aerospace growth – Work on testing real flight hardware and contribute to programs that directly affect commercial and military platforms

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, i