At a Glance
- Tasks: Design and develop embedded firmware for cutting-edge security systems.
- Company: Join a leading tech firm focused on innovative security solutions.
- Benefits: Competitive salary, flexible working options, and career progression opportunities.
- Other info: Collaborative environment with mentorship and technical leadership opportunities.
- Why this job: Make a global impact with your skills in a dynamic engineering team.
- Qualifications: Experience in firmware design and strong C programming skills required.
The predicted salary is between 60000 - 80000 £ per year.
As a Senior Firmware Engineer, you will aid in the design, development, and maintenance of embedded firmware across a range of CEM Systems hardware platforms. You will work closely with hardware, software, and systems teams to deliver reliable, secure, and high-performance solutions used globally in critical infrastructure, airports, data centres, and enterprise environments. This is a hands-on technical position involving firmware design, secure solution development, problem-solving, and full product lifecycle support.
Embedded Firmware Development
- Design, implement and support firmware for embedded systems using RTOS-based environments.
- Develop/maintain/debug multi-threaded firmware applications using signals, semaphores, mailboxes, and other RTOS primitives to manage constrained resources.
- Create clear, robust finite state machine logic for deterministic device behaviour.
- Implement internal communication protocols including SPI, I²C, and other MCU subsystems.
- Design for Security – develop firmware with latest cyber security practices at the core.
Networking & Security Protocols
- Develop and maintain embedded networking features using the ISO model, including TCP/IP, routing, subnets, client/server operation.
- Integrate secure communication technologies including TLS (MBED, WolfSSL) and modern cipher suites such as AES, CHACHA20 along with SHA.
- Work with access-control-specific communication standards, including OSDP for control panels and peripheral devices.
Smart Card & RFID Technologies
- Implement and support smart-card reader technologies across ISO 14443A/B, ISO 15693, and related RFID standards.
- Work with DESFire architecture, including AES and 3DES encryption modes, application identifiers (AIDs), and file structures.
- Support legacy and proprietary card formats including MIFARE Classic, HID iClass, and customer-specific technologies.
Electronics & Hardware Interaction
- Read, interpret, and collaborate using circuit diagrams and system schematics.
- Understand power supply behaviour, electrical limitations, and protection considerations.
- Work with RS485 asynchronous communications, Ethernet hardware, NFC antenna systems, relays, and FET-based output drivers.
Problem Solving & Technical Leadership
- Conduct root-cause analysis across multi-component systems—both hardware and firmware.
- Develop solutions that minimise collateral impact and maintain system stability.
- Mentor junior engineers, perform code reviews, and contribute to engineering best practice.
What we look for
- Ability to work in the office three days per week.
- Authorization to work in the UK.
- Proven experience designing firmware for embedded systems (ideally real-time / resource-constrained environments).
- Strong proficiency in C, familiarity with C++ and JAVA is desirable.
- Experience with a range of IDEs including Keil uVision, QT Creator, Android Studio and source control systems including Github and TFS.
- Experience with embedded Linux and Android operating systems desirable along with solid understanding of hardware fundamentals and microcontroller architectures.
- Demonstrable experience with networking stacks and secure communication protocols.
- Experience with smart-card or RFID technologies is a significant advantage.
- Excellent analytical and debugging abilities, including use of oscilloscopes, logic analysers, and protocol tools.
- Ability to work autonomously and collaboratively across multidisciplinary teams.
- Familiarity with Mitsubishi PLCs desirable.
Desirable Experience
- Experience in access control, security systems, or other safety-critical embedded environments.
- Previous leadership/mentoring responsibilities.
- Familiarity with compliance, certification, or regulated environments.
What we offer
- Work on innovative, industry-leading security products used worldwide.
- Join an experienced engineering team with strong technical depth.
- Opportunities for technical leadership, architecture influence, and career progression.
- Competitive salary, benefits, and flexible working options.
Senior Firmware Engineer in Bangor employer: Johnson Controls
As a Senior Firmware Engineer, you will thrive in a dynamic work environment that champions innovation and collaboration. Our company offers competitive salaries, comprehensive benefits, and flexible working options, ensuring a healthy work-life balance while fostering your professional growth through mentorship and opportunities for technical leadership. Join us in shaping the future of security technology, where your contributions will have a global impact across critical infrastructure.
StudySmarter Expert Advice🤫
We think this is how you could land Senior Firmware Engineer in Bangor
✨Join Local Tech Meetups
Get out there and mingle with fellow developers by joining local tech meetups. It’s a fantastic way to meet people who might be working at Johnson Controls or know someone who does. Plus, you can pick up some trendy tech skills and trends while you're at it!
✨Contribute to Open Source Projects
Show off your coding chops by jumping into open-source projects. Not only does this give you practical experience, but it also gets you noticed in the dev community. You'll create a killer portfolio that speaks volumes about your skills to Johnson Controls.
✨Tap into Online Developer Communities
Don’t underestimate the power of online developer communities like GitHub, Stack Overflow, and even Reddit. Participate in discussions, share your projects, and build your visibility. We can often find opportunities through these channels that can lead to a full-time gig at companies like Johnson Controls.
✨Explore Job Boards Specifically for Tech Roles
Keep your eyes peeled on job boards that focus on tech roles. Sites like TechCareers or Stack Overflow Jobs can often have listings for companies like Johnson Controls that might not show up on broader job sites. Make it a habit to check these regularly, and don’t hesitate to apply directly through our website!
We think you need these skills to ace Senior Firmware Engineer in Bangor
Some tips for your application 🫡
Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.
Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at Johnson Controls.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Johnson Controls and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!
Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!
How to prepare for a job interview at Johnson Controls
✨Brush Up on Your Coding Skills
For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.
✨Know Your Tools and Frameworks
Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If Johnson Controls uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.
✨Showcase Your Projects
Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.
✨Prepare for Behavioural Questions
While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.
