C#/.NET Software Engineer II

RTX (Raytheon); Indianapolis (IN); On-site; USD 110,000 - 150,000; Full time

Job summary

RTX's Battle Management Software Department in Indianapolis seeks software engineers to support development, test, and lifecycle tasks for aircraft embedded software applications. You will work on interfaces with avionics systems, including displays and navigation, solving complex problems with senior engineers.

This role emphasizes hands-on design, testing, and collaboration with multi-disciplinary teams to deliver mission-critical software for defense programs. A security clearance is required.

Qualifications

• Degree in Science, Technology, Engineering or Mathematics (STEM) is required.
• Minimum 2 years of relevant experience unless prohibited by law.
• Experience in software requirements, design, development, integration, and test.
• Proficiency in C++, C#, Python; familiar with .NET libraries.
• Experience developing in a Windows environment and OOP concepts.
• Knowledge of DI/IoC, concurrency, and thread management.
• Experience with Git for source code management.
• Familiarity with DevOps/DevSecOps, CI/CD pipelines.
• Ability to obtain and maintain a US Secret security clearance.

Responsibilities

• Use and provide creative solutions to complex software integration problems.
• Collaborate with software and systems engineers to design end-to-end solutions.
• Support full SDLC across multiple programs from concept through maintenance.

Skills

C++

C#

Python

OOP

DI/IoC

Concurrency

Git

Debugging

DevOps

DevSecOps

Windows

Education

Bachelor's degree in STEM

Tools

Azure DevOps

Jira

Job description

Date Posted: 2026-10-12

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.

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 2 years of prior relevant experience unless prohibited by local laws/regulations.
• Experience in software requirements, design, development, integration, and test.
• 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 scomputer 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 flexibi