Senior Software Engineer at Sandi Crowther Recruitment

• An exciting opportunity is available for an experienced Senior Software Engineer with at least 8 years’ embedded software development experience and strong C / C++ programming skills to join an innovative, well-established IT company. The ideal candidate will hold a relevant Degree in Electronic / Electrical Engineering, Computer Engineering, Computer Science or have equivalent practical experience, with a solid background in microcontroller-based systems, real-time firmware and cellular communications. This role offers the opportunity to contribute to the development of reliable, high-performance technology used in electronic security and communications equipment.

Responsibilities:

• Design, develop and maintain embedded firmware in C / C++ for microcontroller-based devices
• Develop and optimise communication drivers, protocols and interfaces for cellular connectivity and embedded peripherals
• Ensure firmware meets reliability, security and power-efficiency requirements
• Collaborate with hardware and software teams on product development, integration, testing and improvements
• Implement diagnostics, error handling and recovery mechanisms
• Contribute to firmware architecture, coding standards, code reviews and technical documentation
• Conduct software testing, support production processes and troubleshoot complex field issues
• Keep up to date with cellular technologies, embedded security and relevant regulatory requirements
• Provide technical guidance to junior engineers and improve development processes

Requirements:

• Minimum 8 years’ embedded firmware / software development experience
• Strong C and C++ skills, preferably with ARM Cortex-M or similar microcontrollers
• Experience with RTOS environments such as FreeRTOS or bare-metal development
• Knowledge of GSM / LTE modules, AT commands and wireless communications
• Understanding of embedded peripherals and interfaces, including UART, SPI, I2C, ADC, GPIO and DMA
• Experience with Git, debugging tools, build systems and software testing
• Proven ability to develop reliable, production-ready firmware for deployed devices
• Strong analytical, problem-solving and communication skills
• Relevant degree or equivalent practical experience

Advantageous:

• Experience in security, alarm systems, IoT, telemetry or industrial communications
• Knowledge of alarm signalling protocols, such as Contact ID
• Experience with OTA firmware updates, device management or low-power design
• Exposure to hardware development, PCB testing and ICASA compliance requirements
• Python scripting for test automation
• Previous technical leadership or mentoring experience