PrincipalSoftwareEngineer-DataCenterEngineering

**What you will do** Johnson Controls is building the next generation of intelligent building systems for the world's most demanding environments, hyperscale data centers. We are looking for a deeply technical principal engineer with a native development background to join our Data Center Controls Innovation team — someone who thrives at the system level, owns hard platform problems, and sets the technical direction for the engineers around them. This role sits inside our Data Center Controls Innovation Engineering team at our Controls Product Development Center in Glendale, WI. You will design and lead the development of high-performance native platform services and middleware running on Linux-based building management systems and network engine devices deployed in critical data center infrastructure globally. If you want to own the platform layer, shape architecture from the ground up, and build systems where correctness and performance genuinely matter, this is the role for you. This position is 100% on-site at our new Controls Product Development Center and Lab in Glendale, WI, where you will collaborate closely with cross-disciplinary teams and work hands-on with real products. The role may include up to 20% travel. **How you will do it** * Defining and owning the technical architecture for native platform services and middleware, including IPC mechanisms, service APIs, and system-level resource management * Leading design and implementation of high-performance C/C++ components running on embedded and desktop Linux platforms * Establishing and enforcing engineering standards for native development: memory safety, concurrency patterns, error handling, and performance profiling * Driving containerization strategy for native services using Docker on Linux, ensuring clean isolation and reliable deployment across device targets * Serving as a hands-on technical lead and individual contributor — writing production code, conducting deep design reviews, and resolving t