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Principal Embedded Firmware Engineer February 25, 2026

Located in Brown Deer, WI

Pay: DOE

Job Full Description

Brown Deer company looking for Principal Embedded Firmware Engineer 

We are seeking a Principal Embedded Firmware Engineer to lead firmware architecture across multiple embedded product lines, including both existing and next-generation platforms. This role serves as the primary technical authority for embedded firmware, responsible for defining system architecture, coding standards, and development practices for safety-critical, regulated HVAC control products. 

This individual will provide strong technical leadership, partner closely with hardware and systems teams, mentor engineers, and bring structure and predictability to firmware development, release, and sustainment processes. 

 

Key Responsibilities 

  • Own and define firmware architecture across multiple embedded product lines, including legacy and next-generation platforms

  • Establish and document system-level architecture, interfaces, design standards, and firmware development practices 

  • Lead board bring-up and develop high-reliability embedded C/C++ firmware for real-time control, sensor processing, and communications 

  • Serve as the primary technical authority for firmware design decisions, tradeoffs, and overall system direction 

  • Lead firmware development from concept through production and sustainment, ensuring structured release and configuration control practices 

  • Mentor and review work of junior and mid-level engineers while driving code quality and disciplined development standards 

  • Support both bare-metal and OS-based systems (FreeRTOS, Embedded Linux) and collaborate cross-functionally with hardware, systems, manufacturing, and quality teams 

  • Debug complex system-level issues using lab equipment including scopes, logic analyzers, and protocol analysis tools 

 

Preferred Qualifications: 

  • Bachelor's degree in Computer Engineering, Software Engineering, Computer Science, or related field 

  • 6+ years of embedded firmware development experience across multiple product cycles 

  • Expert-level proficiency in embedded C/C++ 

  • Strong understanding of microcontroller architecture, timing, memory, and interrupts 

  • Skilled with embedded debugging tools and lab equipment, with hands-on experience in probing, soldering, and test setup 

  • Hands-on experience with embedded communication protocols (I2C, SPI, UART, RS-485) 

  • Background in HVAC controls, industrial automation, BACnet protocols, or improving internal development standards is a plus 

This is a direct hire opportunity, if you are interested in learning more or would like to be considered for this role, please reach out to Express Employment Professionals today. Our team would be happy to connect with you and discuss the next steps. 

 

About Express Employment Professionals: 

Express is a staffing company that works with numerous companies throughout Ozaukee, Washington, and northern Milwaukee counties. We help local companies fill a variety of roles in numerous skillsets including light industrial, skilled trades, office services, and professional. 

Mequon Location: 11126 N. Cedarburg Rd. Mequon, WI 53092 

Jackson Location: W225N16722 Cedar Park Ct. Jackson, WI 53037 

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Mequon, WI
1752
11126 North Cedarburg Road
Mequon, WI 53092

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