Senior Embedded Firmware Engineer – RISC-V & RTOS

Efinix Technology (M) Sdn. Bhd.; Penang; On-site; MYR 90,000 - 150,000; Full time

Job summary

Efinix Technology (M) Sdn. Bhd. in Penang is seeking an experienced embedded firmware engineer to design, implement, and maintain bare-metal and FreeRTOS drivers for peripherals such as UART, SPI, I2C, GPIO, timers, AXI4 and APB interconnects.

You will extend RTOS support across SoC variants (including SMP), integrate lwIP/TCP/IP networking, SDHC/eMMC storage, and develop example applications to showcase RISC-V capabilities; mentoring juniors and improving build systems.

Qualifications

• Bachelor's or Master’s degree in Electrical/Electronic Engineering, CS, or related field.
• 4+ years of hands-on embedded software development.
• Strong C programming and ARM/RISC-V assembly skills.
• Experience with bare-metal firmware development (startup code, linker scripts, interrupt handlers).
• RTOS experience (FreeRTOS/Zephyr/RT-Thread).
• Familiarity with UART, SPI, I2C, AXI/AXI4, APB interfaces.
• Proficient in GCC cross-compilation and Makefile-based builds.
• Strong debugging and root-cause analysis skills.

Responsibilities

• Design, implement, and maintain bare-metal and FreeRTOS drivers for peripherals including UART, SPI, I2C, GPIO, timers/watchdog, AXI4, and APB interconnects.
• Port and extend RTOS support across SoC variants, including SMP configurations.
• Build and maintain networking software: lwIP TCP/IP stack integration, Ethernet TSE MAC drivers, and iperf- and MQTT-based demos.
• Implement and maintain storage stack support: SDHC/eMMC drivers and FAT filesystem integration.
• Develop new bare-metal and FreeRTOS examples that demonstrate RISC-V SoC capabilities.
• Review code and improve build/test infrastructure (Makefile-based toolchains, RISC-V GCC cross-compilation).
• Investigate and resolve field- and customer-reported issues on shipped SoC platforms.
• Mentor junior firmware engineers on driver development, debugging methodology, and RTOS internals.

Skills

C programming

RISC-V assembly

Bare-metal firmware

RTOS development

UART

SPI

I2C

AXI/AXI4

APB

JTAG debugging

GCC cross-compilation

Makefile build

Debugging

Embedded architectures

Education

Bachelor's/Master's in Electrical/Electronic Engineering / CS

Tools

OpenOCD

Lauterbach TRACE32

GCC

Job description

Efinix Technology (M) Sdn. Bhd. in Penang is seeking an experienced embedded firmware engineer to design, implement, and maintain bare-metal and FreeRTOS drivers for peripherals such as UART, SPI, I2C, GPIO, timers, AXI4 and APB interconnects.

You will extend RTOS support across SoC variants (including SMP), integrate lwIP/TCP/IP networking, SDHC/eMMC storage, and develop example applications to showcase RISC-V capabilities; mentoring juniors and improving build systems.