Software Engineer I (Onsite)

Date Posted: 2026-10-29 Country: United States of America Location: US-AZ-TUCSON-805 ~ 1151 E Hermans Rd ~ BLDG 805 Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: Active and transferable U.S. government issued security clearance is required prior to start date. 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: Ability to obtain INTERIM U.S. government issued security clearance is required prior to start date Are you ready to explore the world of aerospace and defense? Do you want to learn from and collaborate with some of the greatest minds in the industry? At RTX, our internships, co-ops and full-time careers provide an exceptional foundation to work on complex problems, advance your skills and create a safer, more connected world. Discover opportunities to make a difference at RTX. What You Will Do 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. Join the Software Engineering Directorate’s Effectors Center team at Raytheon, where you will develop precision software applications that power the next generation of defense capabilities. In this role, you will design, code, integrate, and test critical real-time embedded software and firmware on missiles, launchers, radars, and naval fire control systems. Working as part of a fast-paced agile team at the leading edge of technology, you will gain hands‑on exposure across the full software development lifecycle—advancing real-time systems design, digital signal processing, machine learning, and DevOps methodologies while helping defend our nation and allies. This position is an onsite role located in Tucson, AZ. Assist in the derivation of software requirements, architecture design, implementation, and verification of real-time embedded software and application tools. Design, code, test, and integrate high-reliability software solutions utilizing C, C++, and object-oriented programming methodologies. Execute hardware-software integration, bench debugging, and testing on embedded targets and hardware‑in‑the‑loop (HIL) environments. Participate actively in internal peer code reviews, software component design reviews, and technical trade studies. Collaborate closely with systems engineers, hardware designers, and project managers to align requirements, constraints, and interface definitions. Follow established software engineering processes and configuration management practices to deliver robust, mission‑critical work products. Qualifications You Must Have Bachelor’s degree in Software Engineering, Computer Engineering, Computer Science, or related Science, Technology, Engineering or Mathematics (STEM) major obtained by start date. Experience developing, building, or debugging software applications utilizing C, C++, or another object-oriented programming language. Experience with hardware-software integration, embedded system testing, or bench‑level software debugging. Experience developing software using object-oriented principles and the practical application of common data structures and algorithms. Experience may be obtained through on-the-job experience, research, coursework, or projects. Qualifications We Prefer Experience with embedded real-time operating systems (RTOS such as FreeRTOS, VxWorks, or embedded Linux) or device driver development. Hands‑on experience developing low‑level code for microcontrollers, microprocessors, or development boards (e.g., ARM, Arduino, Raspberry Pi). Knowledge of systems software design, operating system architectures, and assembly language. Experience utilizing modeling tools, simulation environments, or scripting languages (such as MATLAB/Simulink, Python, or LabVIEW). Familiarity with hardware‑in‑the‑loop (HIL) simulation or FPGA design using VHDL or Verilog. Familiarity with modern software development workflows, version control (such as Git), and Agile methodologies. Exposure to machine learning frameworks (e.g., PyTorch, TensorFlow) or scientific data processing tools (NumPy, Pandas). Experience creating formal technical documentation, such as architecture diagrams, interface control documents, or API specifications. Previous internship or research experience in aerospace, defense, or high‑reliability embedded software engineering. 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, if eligible Learn More & Apply Now! Please consider the following role type definition as you apply for this role. 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. The salary range for this role is 62,900 USD - 119,700 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 to read the Policy and Terms #J-18808-Ljbffr Raytheon