Linux Firmware Engineer

Build your best future with Johnson Controls

As a global leader in smart, healthy, and sustainable buildings, our mission is to reimagine the performance of buildings to serve people, places, and the planet. Join a winning team that enables you to build your best future. Our teams are uniquely positioned to support a wide range of industries across the globe while providing opportunities to grow through meaningful work, innovation, and continuous learning. 

Become part of the Johnson Controls family and thrive in a collaborative environment where your ideas matter and your contributions help shape the future of intelligent building technologies. 

What We Offer

• Competitive salary 

• Paid vacation, holidays, and sick time 

• Comprehensive benefits package including 401(k), pension, medical, dental, and vision coverage 

• Career development and training opportunities 

• Collaborative and innovative team environment 

• Commitment to safety through our Zero Harm culture 

• Opportunity to work on industry-leading access control and security technologies 

This is an Onsite position in Westford, MA.

What You Will Do

As an Embedded Linux Firmware Engineer, you will join the Software House engineering team responsible for developing industry-leading physical access control solutions, including intelligent readers, controllers, and I/O modules used to secure commercial buildings and critical infrastructure worldwide. 

You will contribute to the design, development, testing, and maintenance of embedded firmware running on Linux and Zephyr-based platforms. Working closely with firmware, hardware, software, and quality engineers, you will help deliver innovative and reliable products that sit at the intersection of software and hardware.

How You Will Do It

• Design, develop, test, and maintain embedded firmware for access control panels, readers, and I/O devices 

• Develop software using C/C++ on Embedded Linux and Zephyr RTOS platforms 

• Support hardware integration, board bring-up activities, and system diagnostics 

• Modify and maintain Linux platform components including Buildroot, U-Boot, kernel drivers, and device trees 

• Debug issues across hardware and software, utilizing tools such as JTAG debuggers, oscilloscopes, and logic analyzers 

• Collaborate with cross-functional engineering teams throughout the product development lifecycle 

• Support product enhancements, sustaining engineering efforts, and field issue investigations 

Required Qualifications 

• US Citizen and/or Permanent Resident of the US.
• Bachelor's degree in Computer Science, Computer Engineering, Software Engineering, or a related technical field 

• 1-3 years of professional experience in embedded software or firmware development 

• Experience developing software in C/C++ 

• Experience working with Embedded Linux systems 

• Familiarity with Linux kernel, device drivers, Buildroot, U-Boot, or related embedded Linux technologies 

• Strong problem-solving, debugging, and communication skills 

Preferred Qualifications 

• Experience with Zephyr or other real-time operating systems (RTOS) 

• Experience with board bring-up, hardware diagnostics, and embedded debugging 

• Familiarity with ARM- or NXP-based embedded platforms 

• Experience using tools such as JTAG debuggers, oscilloscopes, or logic analyzers 

• Exposure to Bluetooth, cybersecurity technologies, or connected devices 

• Experience working in an Agile development environment 

HIRING SALARY RANGE: $79,000 - $110,000 (salary to be determined by the education, experience, knowledge, skills, and abilities of the applicant, internal equity, and alignment with market data.) This role offers a competitive Bonus plan that will take into account individual, group, and corporate performance. This position includes a competitive benefits package. The posted salary range reflects the target compensation for this role. However, we recognize that exceptional candidates may bring unique skills and experiences that exceed the typical profile. If you believe your background warrants consideration beyond the stated range, we encourage you to apply. To support an efficient and fair hiring process, we may use technology assisted tools, including artificial intelligence (AI), to help identify and evaluate candidates. All hiring decisions are ultimately made by human reviewers. For details, please visit the About Us tab on the Johnson Controls Careers site at https://jobs.johnsoncontrols.com/about-us

Johnson Controls International plc. is an equal employment opportunity and affirmative action employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, age, protected veteran status, genetic information, sexual orientation, gender identity, status as a qualified individual with a disability or any other characteristic protected by law. To view more information about your equal opportunity and non-discrimination rights as a candidate, visit EEO is the Law. If you are an individual with a disability and you require an accommodation during the application process, please visit here.