Senior Principal Embedded Software Security Engineer; hybrid

Our global Fire Detection product group located in Westford, MA, USA offers you the possibility to interact with other development centers and teams around the world! The opportunities for professional development and career opportunities are endless, given our broad portfolio of products and services within Fire Detection. Work/life balance is important to us, and we offer a flexible hybrid work model.

You will also get exposure to leading edge technology, exciting projects, and life‑saving products that promote global safety of not only facilities, but people. We need your talent and ideas, as we continue to grow and expand our strategic focus and build state‑of‑the‑art fire detection systems.

Johnson Controls is searching for a Senior Principal Embedded Software Security Engineer to be located at the R&D facility in Westford, MA. In this role you will work with a global team of software engineers supporting our embedded software applications for the Fire Detection business at Johnson Controls. Our fire detection products are installed in buildings you visit every day! This is an opportunity to analyze, design, program, debug, modify, test, and implement software used in Fire Alarm Systems.

Our products protect life and property.

This role requires an expert to design, implement, and maintain security across the full lifecycle of embedded products. This role focuses on secure firmware, device-level security, and protection of connected embedded systems against cyber threats. The ideal candidate has strong hands‑on experience in embedded software development combined with applied cybersecurity, including secure boot, cryptography, firmware protection, and secure communication protocols.

• Interface with customers, tech support, NPI teams and organizations around the world
• Continuously strive to hone your skill set in the latest tools and software solutions
• Enhance, Design, prototype, and develop high quality embedded software for fire alarm systems
• Knowledge in multithread, multi-process, and real‑time application development

• Bachelor’s Degree in Computer Science, Software, or Electrical Engineering
• 8+ years of embedded software development experience including security architecture ownership
• Strong experience with embedded systems development: C/C++, RTOS, embedded security
• Solid understanding of Microcontrollers (ARM Cortex-M/A, etc.), secure boot chains, memory protection, privilege levels
• Experience securing Linux-based embedded systems

• IoT platforms
• Edge devices
• Automotive / Medical / Industrial systems
• Secure manufacturing and provisioning

HIRING SALARY RANGE: $110,000 - $155,000 (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. Theposted 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