A leading South African security communications company that designs, manufactures and supports GSM/LTE communicators, alarm panels (including the Mi range) and related software is seeking a hands-on Senior Firmware Engineer to own the end-to-end design, development, and maintenance of embedded firmware.
Responsibilities:
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Design & Maintain: Architect and develop robust C/C++ firmware for resource-constrained microcontrollers (ARM Cortex-M).
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Communication Stacks: Build and optimize drivers and stacks (GSM/LTE, UART, SPI, I2C) for reliable alarm signaling and bi-directional communications.
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Integrations: Work with software teams on Over-the-Air (OTA) updates, cloud backend interfaces, and device provisioning.
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Hardware Collaboration: Assist with board bring-up, schematic reviews, debugging, and design-for-manufacture (DFM).
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Reliability & Security: Implement diagnostics, logging, watchdog mechanisms, error recovery, and low-power strategies.
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Testing & Support: Conduct unit, field, and production testing; perform root-cause analysis to resolve complex field issues.
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Standards & Mentorship: Drive code reviews, establish coding standards, maintain technical documentation, and mentor junior engineers.
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Compliance: Ensure compliance with South African regulatory standards (ICASA) and security protocols.
Minimum Requirements:
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Experience: 8+ years of professional embedded firmware/software development experience.
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Technical Skills: Strong proficiency in C/C++ on ARM Cortex-M microcontrollers (or similar).
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System Design: Proven experience with RTOS (e.g., FreeRTOS) or bare-metal development.
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Connectivity: Deep hands-on experience with cellular modems (GSM/2G/3G/LTE), AT command sets, and RF communication.
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Hardware Tools: Experience with peripherals (UART, SPI, I2C, DMA) and hardware debugging tools (JTAG/SWD, logic analyzers, oscilloscopes).
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Workflows: Proficiency with Git, CI/CD pipelines, and structured build systems.
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Education: B.Sc. or B.Eng. in Electronic/Electrical Engineering, Computer Engineering, Computer Science, or equivalent practical experience.
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Advantageous
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Background in alarm panels, telemetry, or security products (e.g., Contact ID protocols).
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Experience designing secure OTA firmware update systems and low-power/battery-backed devices.
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Scripting skills (Python) for automated testing and tooling.
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Familiarity with ICASA radio compliance and regulatory processes.
Benefits:
Competitive salary based on experience (salary can potentially be more based on experience/skills)
IF you meet the above requirements and want to make a career-changing move, apply today by emailing your CV to [Email Address Removed].com
Desired Skills:
- Senior Firmware Engineer
- Senior Firmware Engineer
- Senior Firmware Engineer
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