Senior Firmware Engineer

Join a forward-thinking organization at the forefront of embedded security technology, where your expertise will directly influence the reliability and performance of critical security communication devices. Our client, a leading company specialising in innovative security solutions, is seeking a seasoned Senior Firmware Engineer to help shape the future of their embedded systems.

• Architect, design, implement, and maintain embedded firmware in C/C++ for microcontrollers used in GSM/LTE communicators, alarm panels, and related devices.

• Develop and optimise drivers, communication stacks (GSM/LTE, UART, SPI, I2C), protocol handlers, and application-layer logic to ensure reliable alarm signalling and bi-directional communication.

• Ensure firmware compliance with stringent reliability, real-time, power-consumption, and security standards pertinent to always-on security equipment.

• Collaborate with hardware engineers on board bring-up, schematic reviews, debugging, and design-for-test/manufacturing considerations.

• Work closely with software teams on integration points such as device provisioning, OTA updates, cloud/backend interfaces, and mobile app interactions.

• Implement robust diagnostics, logging, error handling, watchdog mechanisms, and recovery strategies.

• Lead or contribute to firmware architecture, coding standards, reviews, and technical documentation.

• Perform extensive testing—unit, integration, system, and field—and support production testing and quality assurance processes.

• Troubleshoot complex field issues, analyse logs, and deliver timely solutions.

• Stay abreast of current cellular modules, modem AT command sets, embedded security practices, and regulatory requirements specific to South Africa.

• Mentor junior engineers and support continuous improvement initiatives within development processes.

• Extensive experience (minimum 8 years) in embedded firmware development in C and C++.

• Proven track record in designing and maintaining firmware for cellular communication devices.

• Strong understanding of communication protocols like GSM/LTE, UART, SPI, I2C.

• Experience with diagnostics, error handling, and system recovery strategies.

• Ability to work collaboratively across hardware and software teams.

• Knowledge of embedded security practices and regulatory standards in South Africa.

• Salary: R800K to R1M depending on experience

• The opportunity to work on cutting-edge security communication technology.

• A dynamic hybrid work environment fostering innovation and growth.

• Supportive team culture with mentorship opportunities.

• Commitment to your professional development.