Senior Embedded Firmware Engineer: IoT, ESP32 & Cloud

Apteum Corp; Cebu City; On-site; PHP 900,000 - 1,500,000; Full time

Benefits offered by this job

HMO coverage (free dependent)

Day shift & weekends off

Career growth opportunities

Job summary

Apteum Corp in Cebu City, Philippines, is seeking a Senior Embedded Software Engineer who bridges firmware and hardware. You will develop embedded systems controlling machines and contribute to connected software platforms.

With 5+ years of production firmware, you will work across ESP32/FreeRTOS, STM32, sensors, actuators, and cloud communication, performing hardware bring‑up, testing, and debugging. This hands-on role offers a path to impact across product, firmware, and services.

Qualifications

• Graduate of Electronics Engineering, Computer Engineering or related field.
• 5+ years of production embedded firmware experience.
• Strong C/C++ experience on microcontrollers.
• Experience with ESP32/ESP-IDF/FreeRTOS, or STM32/ARM Cortex-M with willingness to learn ESP32
• Solid understanding of UART, SPI, I2C, GPIO, ADC, PWM, timers and interrupts
• Hands‑on experience with motors, actuators or similar hardware
• Experience with board bring‑up and hardware debugging
• Comfortable reading schematics and using electronic test equipment
• Python or shell scripting for test tooling and automation
• Able to work as an individual contributor and as part of a team
• Willingness to work across hardware and software

Responsibilities

• Develop and maintain embedded firmware using C/C++ and ESP32/FreeRTOS
• Integrate sensors, motors, actuators, cameras and other hardware
• Develop reliable cellular connectivity and cloud communication
• Implement safety, fault handling and fail-safe behaviour
• Develop OTA firmware updates and remote diagnostics
• Contribute to cloud services, APIs and React-based applications
• Build tools and simulators for testing without physical hardware
• Support fleet deployment, monitoring and troubleshooting
• Debug hardware using oscilloscopes, logic analysers and multimeters

Skills

C/C++

ESP32/FreeRTOS

Microcontroller programming

Hardware debugging

Python scripting

Schematic reading

UART/SPI/I2C

Education

Electronics Engineering

Computer Engineering

Tools

ESP-IDF

FreeRTOS

STM32

ARM Cortex‑M

Oscilloscope

Logic analyzer

Job description

Apteum Corp in Cebu City, Philippines, is seeking a Senior Embedded Software Engineer who bridges firmware and hardware. You will develop embedded systems controlling machines and contribute to connected software platforms.

With 5+ years of production firmware, you will work across ESP32/FreeRTOS, STM32, sensors, actuators, and cloud communication, performing hardware bring‑up, testing, and debugging. This hands-on role offers a path to impact across product, firmware, and services.