Senior Firmware Engineer

Pro Talent; Kloof; Hybrid; ZAR 800,000 - 1,000,000; Full time

Benefits offered by this job

Hybrid work model

Mentorship opportunities

Professional development

Job summary

Pro Talent is seeking a Senior Firmware Engineer to lead embedded development for cellular security devices. You will design, implement, and optimize firmware in C/C++ for GSM/LTE communicators and related hardware, collaborating with hardware and software teams.

The role emphasizes reliability, real-time performance, security, diagnostics, OTA updates, and field testing. Hybrid work, mentorship, and opportunities for professional growth are offered.

Qualifications

• 8+ years of embedded firmware development in C/C++.
• Firmware for cellular devices design and maintenance.
• Experience with UART, SPI, I2C, GSM/LTE protocols.
• Security practices and regulatory awareness in South Africa.
• Ability to collaborate across hardware and software teams.

Responsibilities

• Architect, design, implement, and maintain embedded firmware in C/C++ for microcontrollers used in GSM/LTE communicators, alarm panels, and related devices.
• Develop drivers and stacks for GSM/LTE, UART, SPI, I2C, protocols, and application logic for reliable signaling.
• Ensure firmware reliability with real-time, power, and security standards for always-on equipment.
• Collaborate with hardware engineers on bring-up, testing, and manufacturing considerations.
• Work with software teams on provisioning, OTA updates, cloud interfaces, and apps.
• Implement diagnostics, logging, error handling, watchdogs, and recovery strategies.
• Lead or contribute to firmware architecture, coding standards, reviews, and documentation.
• Perform unit, integration, system, and field testing; support QA processes.
• Troubleshoot field issues, analyze logs, and deliver timely solutions.
• Stay updated on cellular modules, modem AT command sets, embedded security, and SA regulatory requirements.
• Mentor junior engineers and drive process improvements.

Skills

Embedded firmware

C/C++

Cellular communications

Diagnostics & recovery

Cross-team collaboration

Mentorship

Tools

UART

SPI

I2C

GSM/LTE

Job description

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.

Where You'll Make an Impact:

• 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.

Qualifications:

• 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.

What We'll Give You:

• 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.