Senior Embedded Software Engineer; Onsite

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.

Collins Aerospace is a leader in technologically advanced, intelligent solutions that help redefine the aerospace and defense industry. With a comprehensive portfolio and deep technical expertise, we help customers meet the demands of the global market. Join us and help shape the future of aerospace and defense.

Do you want to be part of an innovative, forward‑thinking, and highly motivated engineering team developing the next generation of avionics processing platforms? The Advanced Processing Architectures Software organization delivers embedded processing solutions used across a wide range of safety‑critical commercial and military avionics systems. Our team is responsible for the development, verification, certification, and long‑term sustainment of advanced processing and graphics capabilities that support the highest standards of reliability and performance.

We are seeking a Senior Embedded Platform Software Engineer to join our foundation software team. In this role, you will contribute to the development of platform control software that enables secure, deterministic, and robust operation of custom avionics processing ASICs or advanced MPSoC devices. You will work across key avionics capabilities including silicon initialization flows, secure boot integration, early‑boot software, platform security, hardware bring‑up, system health monitoring, and fault‑detection mechanisms.

This position requires close collaboration with hardware, systems, and embedded software teams to ensure safe, reliable system behavior across the complete avionics lifecycle.

• Develop embedded platform software supporting processor control, power‑management flows, and ASIC state coordination
• Implement and integrate secure boot orchestration components, cryptographic validation routines, and platform trust enforcement
• Design, implement, and bring up low‑level drivers, HAL layers, diagnostics, and platform initialization software
• Work extensively in virtual development environments (simulation, emulation, virtual platforms, FPGA prototypes) before hardware availability
• Work with and oversee subcontract suppliers responsible for custom boot loader and early‑boot software development
• Review, validate, and integrate supplier deliverables (bootloaders, BSP components, startup sequences) into the platform software stack
• Collaborate with OS and BSP vendors to integrate and configure RTOS components
• Debug and root‑cause hardware/software interaction issues
• Work within pipelined build and test development environments (e.g., automated build systems, CI/CD pipelines, continuous testing frameworks)
• Identify opportunities to optimize development workflows, improve efficiency, and introduce innovative tools or methods
• Document designs, contribute to coding standards, and support cross‑functional integration activities
• Mentor junior engineers and contribute to a positive, collaborative team dynamic

• 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 developing embedded software for complex SoCs or custom ASIC architectures
• Proficiency in C/C++ and embedded systems design
• Experience working in virtual development environments such as simulation, emulation
• Hands‑on experience with board bring‑up, hardware abstraction layers, diagnostics, and driver development
• Understanding of secure boot flows, key validation mechanisms, and trusted platform initialization
• Solid understanding of ASIC/SoC architectures, register maps, interrupts, reset logic, and hardware control interfaces
• Experience with RTOS environments
• De…