Senior Software Engineer Jobs in Beloit, WI (NOW HIRING)

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Security Clearance Type: None/Not Required Security Clearance Status: Not Required

Join our team in Rockford, IL as a Senior Software Engineer and help develop the embedded software behind advanced aerospace electric power systems. You'll collaborate with talented engineers to build, verify, and certify real-time embedded software in C, working across the full software development lifecycle and contributing to mission-critical technology that keeps aircraft operating safely and reliably.

• Develop embedded software for aerospace electric power systems.
• Participate in the full software development lifecycle, from planning through certification.
• Design, implement, verify, and validate real-time embedded software in C.
• Collaborate with cross-functional and remote engineering teams to deliver high-quality software.
• Support software certification activities in compliance with aerospace standards.
• Design, develop, and maintain embedded C software for electric power system controls.
• Perform software planning, architecture, implementation, testing, and verification.
• Develop software in accordance with DO-178C (Levels A–C) and other applicable aerospace standards.
• Create and maintain software documentation, requirements, and verification artifacts.
• Troubleshoot, debug, and integrate software with embedded hardware.
• Participate in design reviews, code reviews, and technical discussions.
• Collaborate with systems, hardware, verification, and certification engineers to ensure successful project delivery.

• Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and minimum 5 years prior relevant experience or an Advanced Degree in a related field and minimum 3 years of experience.
• Experience with the full embedded software development lifecycle, including requirements decomposition, design, implementation, verification, and certification.
• Strong knowledge of embedded software architecture and C programming.
• Hands‑on experience with embedded lab testing using oscilloscopes, in‑circuit emulators, and target debuggers.

• Experience developing and verifying embedded software in compliance with DO-178 or similar industry standards.
• Proficient in Assembly, Python, and Tcl/Tk programming languages.
• Familiar with Model-Based Development (MBD) using MATLAB/Simulink.
• Experience with real-time embedded operating systems (RTOS) and low-level platform integration, including BSPs, device drivers, and I/O.
• Knowledge of Built-In Test (BIT) development, module self-test, and system protection.
• Experience with configuration and requirements management tools, including IBM Rational Synergy, Change, DOORS, and DXL.
• Strong understanding of ARINC 429, ARINC 629, ARINC 664, CAN, and Ethernet communication protocols.
• Experience with Texas Instruments TMS320F2812 DSPs and Freescale PowerPC microcontrollers.
• Knowledge of generator control systems, embedded control applications, and hardware/software integration.
• Experience leading technical teams and mentoring engineers.
• Understanding of software quality assurance and the software development lifecycle (SDLC).
• Excellent interpersonal, collaboration, and written/verbal communication skills.

• Medical, dental, and vision insurance
• Three weeks of vacation for newly hired employees
• Generous 401(k) plan that includes employer matching funds and separate employer retirement contribution, including a Lifetime Income Strategy option
• Tuition reimbursement program
• Student Loan Repayment Program
• Life insurance and disability coverage
• Optional coverages you can buy: pet insurance, home and auto insurance, additional life and accident insurance, critical illness insurance, group legal, ID theft protection
• Birth, adoption, parental leave benefits
• Ovia Health, fertility, and family planning
• Adoption Assistance
• Autism Benefit
• Employee Assistance Plan, including up to 10 free counseling sessions
• Healthy You Incentives, wellness rewards program
• Doctor on Demand, virtual doctor visits
• Bright Horizons, child and elder care services
• Teladoc Medical Experts, second opinion program
• And more!

We make modern flight possible for millions of travelers and our military every second. Our major product lines are on-board virtually every aircraft flying. Be it keeping passengers safe with our emergency power generation systems or creating a positive in-flight experience through reliable cabin pressure controls and quieter engines, Power & Controls focuses on delivering a best-in-class experience to our customers. We hire the top people in the industry. Their ideas drive our performance, and our integrity keeps our customers happy. Join us as we take flight!

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.

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.

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RTX is an aerospace and defense company that provides advanced systems and services for commercial, military and government customers worldwide. It comprises three industry-leading businesses – Collins Aerospace, Pratt & Whitney, and Raytheon. Its 195,000 employees enable the company to operate at the edge of known science as they imagine and deliver solutions that push the boundaries in quantum physics, electric propulsion, directed energy, hypersonics, avionics and cybersecurity. The company, formed in 2020 through the combination of Raytheon Company and the United Technologies Corporation aerospace businesses, is headquartered in Arlington, Virginia.