Job Summary
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:
Design & Maintain: Architect and develop robust C/C++ firmware for resource-constrained microcontrollers (ARM Cortex-M).
Communication Stacks: Build and optimize drivers and stacks (GSM/LTE, UART, SPI, I2C) for reliable alarm signaling and bi-directional communications.
Integrations: Work with software teams on Over-the-Air (OTA) updates, cloud backend interfaces, and device provisioning.
Hardware Collaboration: Assist with board bring-up, schematic reviews, debugging, and design-for-manufacture (DFM).
Reliability & Security: Implement diagnostics, logging, watchdog mechanisms, error recovery, and low-power strategies.
Testing & Support: Conduct unit, field, and production testing; perform root-cause analysis to resolve complex field issues.
Standards & Mentorship: Drive code reviews, establish coding standards, maintain technical documentation, and mentor junior engineers.
Compliance: Ensure compliance with South African regulatory standards (ICASA) and security protocols.
Minimum Requirements:
Experience: 8+ years of professional embedded firmware/software development experience.
Technical Skills: Strong proficiency in C/C++ on ARM Cortex-M microcontrollers (or similar).
System Design: Proven experience with RTOS (e.g., FreeRTOS) or bare-metal development.
Connectivity: Deep hands-on experience with cellular modems (GSM/2G/3G/LTE), AT command sets, and RF communication.
Hardware Tools: Experience with peripherals (UART, SPI, I2C, DMA) and hardware debugging tools (JTAG/SWD, logic analyzers, oscilloscopes).
Workflows: Proficiency with Git, CI/CD pipelines, and structured build systems.
Education: B.Sc. or B.Eng. in Electronic/Electrical Engineering, Computer Engineering, Computer Science, or equivalent practical experience.
Advantageous
Background in alarm panels, telemetry, or security products (e.g., Contact ID protocols).
Experience designing secure OTA firmware update systems and low-power/battery-backed devices.
Scripting skills (Python) for automated testing and tooling.
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 itcareers@hireresolve.za.com
About
Specialists in Civil, Structural, Mechanical Engineering, Information Technology, Mining, Manufacturing and Finance Careers! Hire Resolve is one of the larger and more agile South African recruitment companies that focus on placing professionals and skilled people in permanent employment and contract employment. We prefer and focus on working with top quality professionals and candidates in South Africa and Africa. Hire Resolve has successfully placed Engineering, Mining, IT, Manufacturing and Finance professionals with top firms across the Western Cape, Eastern Cape, KwaZulu Natal, Gauteng and in Africa. Hire Resolve has assisted candidates to find jobs at over 100 JSE listed companies of which many are global companies with offices and operations in South Africa and Africa. It is for this reason that we are well respected in the industries we operate in and in the recruitment industry.
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