> Markdown version of [/jobs/ext/4019954-software-engineer-i-onsite](https://www.wearedevelopers.com/jobs/ext/4019954-software-engineer-i-onsite). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# Software Engineer I - (Onsite)

- **Company:** RTX
- **Location:** Tucson, AZ, United States
- **Experience:** Starter
- **Salary:** $62,900.0 - $119,700.0
- **Contract:** Internship / Graduate position
- **Skills:** Testing (Software), Big Data, C Sharp (Programming Language), C++ (Programming Language), Network Analysis, Communications Protocols, Network Interface Controllers, Firmware, Object-Oriented Software Development, Server Administration, Software Engineering, Systems Integration, Scripting, SC Clearance, Information Technology, Real Time Data, Hardware Infrastructure
- **Published:** October 30, 2026
- **Apply:** https://www.careerbuilder.com/job-details/software-engineer-i-onsite-tucson-az--051dcec7-9566-4830-bbca-1353e4dbca24

## About the Role

Software Engineering, United States Citizen, Security Clearance, RTX, Aerospace and Defense, Testing, Software Administration, Software Testing, Software Engineering, Cross-Functional, * Bachelor's degree in Computer Science, Software Engineering or related Science, Technology, Engineering or Mathematics (STEM) major obtained by start date

 * Experience developing software using object-oriented programming principles and implementing code on real-time or embedded platforms through academic or internship projects
 * Applied software engineering principles in academic or internship projects to design, integrate, or test software components

Experience may be obtained through job experience, research, coursework, or projects, * Experience troubleshooting systems using test equipment such as oscilloscopes, logic analyzers, network analyzers, and/or spectrum analyzers

 * Experience with using telemetry data collection equipment to capture real time data and/or real time monitoring
 * Knowledge of electrical schematics, interface control documentation, operating system architecture ,and communications protocols
 * Experience reading and integrating software routines with hardware/electronics; C/C++/C# preferred
 * Experience with instrumentation and collection of large data sets, including the application of scripting or automation to data collection and analysis
 * Experience with systems requirements, systems integration, systems test, systems software, and/or systems hardware.

## Description

The Hardware In the Loop (HWIL) Department in Tucson, AZ is a multi-discipline organization responsible for designing, building and integrating state of the art testing environments (flight simulators for missiles), as the last step before flight test. On our team, you will work with weapon system designers to understand requirements, design solutions, integrate, and deploy the systems to help support tactical software development, testing, and delivery for missiles to the warfighter.

This role is 100% on-site at our Tucson, AZ campus. As an Software Engineer at Raytheon you will:

 * Work on a multi-disciplined team to support systems integration
 * Support troubleshooting and failure data analyses, including root cause and corrective action processes and advanced use of lab or field test equipment
 * Work in a lab environment integrating software, firmware and hardware in support of complex systems, * 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.
 * This position requires the ability to obtain a security clearance. DCSA Consolidated Adjudication Services (DCSA CAS), 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.