C#/.NET Senior Software Engineer

Date Posted:

2026-11-10

Country:

United States of America

Location:

US-IN-INDIANAPOLIS-206 ~ 3939 Priority Way S Dr ~ PRIORITY BLDG 6

Position Role Type:

Onsite

U.S. Citizen, U.S. Person, or Immigration Status Requirements:

The ability to obtain and maintain a U.S. government issued security clearance is required.

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 after day 1

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.

Raytheon brings the strength of more than 100 years of experience and renowned engineering expertise to meet the needs of today’s mission and stay ahead of tomorrow’s threat. We deliver solutions that help our nation and allies defend freedoms and deter aggression, creating a safer, more secure world. Join us and help shape the future of aerospace and defense.

Our Battle Management Software Department is looking for software engineers to support development, test, and other tasks throughout a software life cycle for aircraft embedded software applications. The aircraft operating system interfaces with several avionics systems including displays, navigation, and mission planning. This challenging work requires strong problem-solving skills and the desire to learn from and work with world class Engineers.

We value your skills and experience, so don’t hold back. Your qualifications add tremendous value to our team. Our customers come from all different backgrounds, and so do our employees. If you’re passionate about what you could accomplish here, we’d love to hear from you.

This position will be 100% onsite in Indianapolis, IN.

What You Will Do

• Use and provide creative solutions to complex technical system and software integration problems.

• Work closely with other software engineers and systems engineers to design ideal solutions with the end user and operational needs in mind.

• Support all aspects of a software development life cycle as a member of a multi-disciplined team. This includes supporting new and legacy military and commercial programs from concept and requirements, to design, development, integration, test, and potentially subsequent maintenance tasking.

Qualifications You Must Have

• Typically requires a degree in Science,Technology, Engineering or Mathematics (STEM) and a minimum of 5 years of prior relevant experience unless prohibited by local laws/regulations.

• Experience developing and testing software using C++, C#, Python, or closely related software languages.

• Experience with using .NET libraries and frameworks.

• Experience developing software in a Windows environment.

• Experience with Object-Oriented Programming (OOP) concepts such as understanding classes, inheritance, polymorphism, and encapsulation

• Experience with implementing Dependency Injection (DI) and Inversion of Control (IoC) patterns.

• Experience with concurrency and thread management.

• Experience with Git for source code management.

• Experience with bitwise operations, memory layout, and system-level programming.

• Experience with DevOps and DevSecOps practices, including CI/CD pipelines and software development methodologies.

• Experience with software systems design, integration, management, and testing.

• Experience utilizing software debugging tools to troubleshoot software implementation and ensure integrity of the software products.

• The ability to obtain and maintain a U. S. government issued Secret security clearance after day 1. U.S. citizenship is required as only U.S. citizens are eligible for a security clearance.

Qualifications We Prefer

• Experience using software optimization techniques and timing analysis to ensure real-time operation and synchronization of software products

• Familiarity with Ethernet, MIL-STD-1553, etc. protocols, and the tools used to view their traffic (e.g., Wireshark and AltaView, respectively)

• Working knowledge in common computer hardware interface and data protocols such as TCP/IP, UDP, RS-422, USB, PCI

• Experience developing requirements for software products

• Understanding of computer architecture and computer hardware optimization techniques

• Working knowledge of Software Configuration Management principles environments and tools

• Working knowledge and experience in an Agile development environment using Azure DevOps, Jira, or equivalent

• Parallel programming principles and processes for technical computing environments

• Strong desire and ability to collaborate in a team environment

• A proactive approach to identifying challenges and finding solutions collaboratively.

• Ownership of tasks and responsibilities, with a commitment to delivering quality work on time.

• Ability to self-organize and meet short-term and long-term deadlines

• Comfort with change and flexibility to pivot when priorities or requirements evolve.

• Able to work closely in a multi-discipline team daily

• Strong Analytical skills

What We Offer

• Our values drive our actions, behaviors, and performance with a vision for a safer, more connected world. At RTX we value: Safety, Trust, Respect, Accountability, Collaboration, and Innovation.

• Relocation eligible.

Learn More & Apply Now!

Please ensure the role type defined below is appropriate for your needs before applying to this role. This position is classified as:

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.

Candidates will learn more about role type and current site status throughout the recruiting process. For onsite roles, commuting to and from the assigned site is the employee’s personal responsibility.

This position requires a security clearance. DCSA Consolidated Adjudication Services (DCSA , an agency of the Department of Defense, handles and adjudicates the security clearance process. More information about Security Clearances can be found on the US Department of State government website here: https://www.state.gov/m/ds/clearances/c10978.htm

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 (http://www.rtx.com/privacy/Job-Applicant-Privacy-Notice) to read the Policy and Terms

Raytheon Technologies is An Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status, age or any other federally protected class.