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# Principal Software Engineer, Connectivity

- **Company:** NxT Level
- **Location:** Chicago, IL, United States
- **Experience:** Expert
- **Salary:** $150,000.0 - $250,000.0
- **Contract:** Permanent contract
- **Skills:** C (Programming Language), Systems Engineering, Bluetooth Low Energy (Bluetooth), C++ (Programming Language), Communications Protocols, Computer Engineering, Software Debugging, File Systems, Embedded Software, Emulators, Ethernet, Firmware, Failure Mode Effects Analysis, Github, Revision Control Systems, Hardware Interface Design, LabVIEW, MATLAB, Modbus, X.509, Software Architecture, Software Tools, RS-485 Standard, Systems Architecture, TCP/IP, Universal Asynchronous Receiver/Transmitter, Wi-Fi Technology, Diagnostic Tools, Multithreading, Transport Layer Security, Real Time Systems, Information Technology, Bacnet, Wireless Technologies, U-Boot
- **Published:** November 6, 2026
- **Apply:** https://www.adzuna.com/details/5378346668

## About the Role

* Bachelor's degree in Computer Engineering, Electrical Engineering, Computer Science, or a related discipline
 * 7+ years of hands-on experience developing embedded software for microprocessor-based control systems
 * Proficiency in C, C++, and Assembly for real-time, embedded environments
 * Expertise in communication protocols and hardware interfaces: SPI, QSPI, UART, RS485
 * Familiarity with modern wired and wireless technologies such as Ethernet, BLE, Wi-Fi, Thread, Matter, Amazon Sidewalk, BACnet, Modbus, and TCP/IP
 * Experience with version control tools (e.g., GitHub) and debugging tools (oscilloscopes, emulators, logic analyzers)
 * Strong knowledge of secure embedded systems: Secure Boot, TLS, X.509, encrypted file systems
 * Ability to read and interpret PCB schematics and system wiring diagrams
 * Working knowledge of MATLAB, LabVIEW, or other model-based development environments
 * Excellent communication skills and the ability to work cross-functionally across engineering and product disciplines, * Experience working with regulatory environments or connected appliance industries
 * Familiarity with diagnostics tools for manufacturing and field deployment
 * Statistical design tools or knowledge of Design of Experiments (DOE)
 * Experience mentoring engineering teams and driving systems architecture in fast-paced environments

## Description

Our client, an industry leader in connected home and energy-efficient products, is seeking a Principal Software Engineer - Connectivity to drive the design and development of embedded software for IoT-connected MEP devices. This key role sits within the Advanced Technology & Integration team and focuses on architecting scalable connectivity solutions across product lines., * Lead the end-to-end development of embedded software for connectivity modules integrated with home appliance products

 * Define requirements and software architecture in collaboration with systems engineering, product teams, R&D, marketing, and manufacturing
 * Develop production-level embedded software using C/C++ and assembly for multi-threaded, real-time systems
 * Ensure robust documentation and perform self-reviews and unit-level testing
 * Interface with hardware teams to validate firmware in real product environments
 * Support manufacturing and field service implementation, including software tools for diagnostics and support
 * Develop and validate PC, handheld, and mobile-based tools for development, service, and testing
 * Participate in system design reviews, including FMEAs and DFM/DFT evaluations
 * Coordinate formal documentation for requirements, design artifacts, and qualification testing
 * Represent the organization in technical societies and remain abreast of emerging industry innovations