Senior Electronics Engineer – Fire & Security Systems

Location: Sunbury-on-Thames (TW16) | Hybrid: 3 days onsite, 2 days WFH
Industry: Security & Fire Safety Technology

Why Join Us?

• Competitive salary + 7% matched pension
• 25 days holiday + sick pay
• Hybrid working (2 days WFH)
• Private medical insurance & life assurance
• Extensive training and development resources
• Employee assistance program & wellbeing support
• On-site restaurant, free coffee, and the occasional cake!
• Friendly team culture with social clubs (badminton, 5-a-side football)
• Free parking & great transport links (M3 Jct 1, Sunbury/Kempton Park stations)

Shape the Future of Security Technology with Johnson Controls

At Johnson Controls, we’re redefining how the world stays safe. As a global leader in smart, sustainable building and security solutions, we’re on a mission to protect what matters most—people, assets, and environments. Our cutting-edge fire and security systems are trusted worldwide, and we’re looking for experienced Electronics Engineers who are ready to make a real impact.

If you’ve worked in the security or fire safety industry, and you’re passionate about designing high-reliability electronics for life-saving systems, this is your opportunity to innovate at scale.

How you will do it

As a Senior Electronics Engineer, you’ll play a key role in the design and development of advanced electronic hardware for our next-generation safety and security products. You will:

• Design robust analogue and digital circuits for mission-critical applications.
• Lead product qualification through rigorous testing and compliance processes.
• Collaborate with cross-functional teams including Software, Mechanical, Product Management, and Manufacturing.
• Support new product introduction and continuous improvement of existing systems.
• Provide expert-level support to field teams and engage with suppliers and regulatory bodies.
• Stay ahead of industry trends and contribute to innovation in secure electronics design.
• Optionally lead small-scale projects and mentor junior engineers.

What we look for

Essential:

• Proven experience in electronics design within the security, fire, or safety systems industry.
• Strong background in digital/microcontroller and analogue circuit design.
• Familiarity with compliance standards, EMC testing, and product certification.
• Excellent communication and collaboration skills.

Desirable:

• Experience with Field Bus, communication protocols, or Hazardous Area applications.
• Knowledge of SPICE simulation, programmable logic (FPGAs, CPLDs), or embedded software.
• Understanding of international standards and type testing.
• Project leadership or mentoring experience.

Ready to Make a Difference?

Join a global leader where your work directly contributes to safer environments across the world. If you’re an experienced electronics engineer with a background in security systems, we want to hear from you.

Apply now and help us build the future of secure, smart technology.

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