> Markdown version of [/jobs/ext/4388877-software-engineer-i-onsite](https://www.wearedevelopers.com/jobs/ext/4388877-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:** $57,200.0 - $108,800.0 - **Contract:** Internship / Graduate position - **Skills:** Software Applications, Arduino, C++ (Programming Language), Configuration Management, Computer Engineering, Embedded Software, Firmware, Object-Oriented Software Development, Systems Development Life Cycle, Raspberry Pi, Real-Time Operating Systems, Software Engineering, Software Systems, Systems Integration, Software Organization, PIC Microcontroller, Integration Tests, Information Technology - **Published:** October 26, 2026 - **Apply:** https://www.careerbuilder.com/job-details/software-engineer-i-onsite-tucson-az--cd7be358-ffe9-4cf8-99a6-041e326579f7 ## About the Role Software Engineering, United States Citizen, Security Clearance, RTX, Aerospace and Defense, Integration Testing, Software Engineering, Operating Systems, Computer Firmware, Software Development Lifecycle (SDLC), Ability to obtain INTERIM U.S. government issued security clearance is required prior to start date, We encourage curious, creative problem solvers to join our team of bright, dedicated software craftspeople in designing and implementing highly innovative systems. You will learn advanced software engineering practices and apply new technologies to develop next generation capabilities and help keep our country safe., * Bachelor's degree in Software Engineering, Computer Engineering, Computer Science, or related Science, Technology, Engineering or Mathematics (STEM) major obtained by start date * Experience with C, C++, or other object-oriented language * Experience with hardware-software integration and embedded system testing Experience may be obtained through on-the-job experience, research, coursework, or projects Qualifications We Prefer * Prior Internship experience * Experience with Real-Time Operating Systems (RTOS) * Knowledge of object-oriented design and Unified Model Language * Experience writing low level code for microcontroller, Arduino or Raspberry PI * Interpersonal and communication skills, both verbal and written * ABET accreditation * Minimum 3.0 GPA * Demonstrated ability to work effectively with colleagues and leaders in a team environment ## Description This position is within the Effectors Center of the Software organization, and is an onsite role located in Tucson, AZ. * Assist and participate in the requirements, design, development and testing of real-time embedded software, application software, and tools, to include development of new work products or enhancement of existing applications and systems. * Design, code, test, integrate, and document software solutions. * Participate in internal review of software components and systems. * Collaborate with project managers and other professionals within Engineering. * Work on problems with defined scope, schedule, and expectations. * Follow established development practices and processes to maintain the configuration management of software products. What You Will Learn * Use new tools that will keep you state-of-the-art. * Stay updated with the latest advancements in software development and missile technology to drive innovation., * 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. 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.