Senior Firmware Engineer at Hire Resolve

Job Description

• A South African security communication and telemetry company is seeking a hands-on Senior Firmware Engineer to take technical ownership of the end-to-end design, development, and maintenance of embedded firmware for the company's communicators, alarm panels, and IoT security devices.
• NB: Willing to pay relocation costs for the right candidate.

Responsibilities:

• Firmware Architecture & Development: Design, implement, and maintain low-latency C/C++ firmware for microcontrollers (ARM Cortex-M) powering GSM/LTE communicators and alarm panels.
• Communications & Protocols: Develop and optimize driver stacks (UART, SPI, I2C), cellular communications (GSM/LTE), and protocol handlers for reliable bi-directional alarm signaling.
• System Reliability & Security: Implement diagnostics, watchdog/recovery mechanisms, logging, and security practices to ensure maximum uptime and power efficiency.
• Hardware Integration & Bring-Up: Collaborate with hardware teams on schematic reviews, board bring-up, signal integrity, and design-for-manufacture (DFM).
• Software & Cloud Integration: Support OTA firmware updates, device provisioning, and backend/cloud API interfaces alongside the software team.
• Testing, Field Support & Compliance: Perform field testing, analyze field logs to resolve complex root-cause issues, and ensure compliance with South African (ICASA) standards.
• Technical Leadership: Drive coding standards, conduct code reviews, document architectures, and mentor junior engineers.

Minimum Requirements:

• Experience: 8+ years of professional embedded firmware / software development experience.
• Technical Skills: Strong C/C++ proficiency on resource-constrained microcontrollers (ARM Cortex-M preferred); solid RTOS (e.g., FreeRTOS) or bare-metal development background.
• Cellular & Peripherals: Proven experience with cellular modems (2G/3G/4G/LTE), AT command sets, and peripheral buses (UART, SPI, I2C, ADC, DMA).
• Tools & Debugging: Proficiency with Git, JTAG/SWD debuggers, logic analyzers, oscilloscopes, and CI/CD pipelines for embedded systems.
• Problem Solving: Track record of deploying production-grade firmware and debugging complex, intermittent field issues.
• Education: Bachelor’s degree in Electronic/Electrical Engineering, Computer Engineering, Computer Science, or equivalent practical experience.

Desirable / Advantageous Skills

• Experience in security, telemetry, IoT, or industrial automation sectors.
• Familiarity with alarm signaling protocols (e.g., Contact ID, SIA).
• Experience with OTA update architectures and device management platforms.
• Knowledge of low-power design and battery-backed power management techniques.
• Familiarity with ICASA regulatory compliance for radio equipment.
• Scripting capability (Python) for automated testing and internal tooling.