Senior Firmware Engineer: IoT & Embedded Systems

Centrica; Leeds; Hybrid; GBP 90,000 - 120,000; Full time

Benefits offered by this job

Car allowance

Energy allowance 15%

Pension plan

Company healthcare

Holiday buy/sell (up to 5 days)

Job summary

Centrica Hive in the UK is seeking a Senior Firmware Engineer to own the firmware for our consumer IoT devices, from concept through to delivery. This UK-based hybrid role offers occasional site travel and the chance to work on scalable, secure firmware powering heating, home automation and energy products.

You will lead a small firmware team, design robust architectures, implement features, apply modern software practices, and collaborate with product managers to shape the roadmap.

Qualifications

• Strong expertise in embedded C/C++ development within real-time operating environments, including FreeRTOS and other resource-constrained systems.
• Proven experience developing connected IoT products using ESP-IDF, Wi-Fi, BLE, Zigbee, and 802.15.4, with Silicon Labs MG2x and Zigbee Application Framework experience highly desirable.
• Solid understanding of embedded security, including secure boot, OTA updates, provisioning, certificate-based identity management, and secure device communications.
• Experience building cloud-connected devices, leveraging MQTT and AWS IoT Core services, including TLS, X.509 authentication, and device shadow technologies.
• Strong focus on software quality and performance optimisation, with expertise in memory and flash management, automated testing, and CI/CD practices for embedded systems.
• Forward-thinking approach to engineering, including the use of AI-powered tools to accelerate delivery, improve productivity, and enhance software quality, alongside knowledge of emerging technologies such as Matter and Thread.

Responsibilities

• Act as the technical lead for a small firmware engineering team, providing direction, guidance, and ownership of firmware development activities.
• Design and implement robust, scalable firmware architectures that support current and future Hub platform capabilities.
• Develop, test, troubleshoot, and optimise firmware features to deliver high-quality, reliable customer experiences.
• Champion modern software engineering practices, ensuring solutions are maintainable, secure, and built to the highest standards.
• Drive consistent code quality through peer reviews, mentoring, and knowledge sharing across the engineering team.
• Collaborate closely with Product Managers and key stakeholders to define requirements, prioritise work, and shape the product roadmap.
• Support a culture of continuous learning, innovation, and technical excellence within the wider engineering community.

Skills

Embedded C/C++

Real-time OS (FreeRTOS)

IoT development

Security (embedded)

Tools

ESP-IDF

AWS IoT Core

MQTT

Job description

Centrica Hive in the UK is seeking a Senior Firmware Engineer to own the firmware for our consumer IoT devices, from concept through to delivery. This UK-based hybrid role offers occasional site travel and the chance to work on scalable, secure firmware powering heating, home automation and energy products.

You will lead a small firmware team, design robust architectures, implement features, apply modern software practices, and collaborate with product managers to shape the roadmap.