Senior Firmware Engineer (IoT Solutions)

KLASS ENGINEERING & SOLUTIONS PTE. LTD.; Singapore; On-site; SGD 60,000 - 80,000; Full time

Job summary

A tech engineering firm in Singapore is seeking an experienced Embedded Software Engineer to design and develop firmware for microcontrollers. Key responsibilities include integrating hardware components, debugging firmware interactions, and collaborating with various engineering teams. The ideal candidate holds a degree in Electrical Engineering or a related field and has strong skills in C/C++. This position offers opportunities for mentoring junior engineers and contributing to innovative projects.

Qualifications

• Hands-on experience in embedded firmware development.
• Strong programming proficiency in C/C++ for resource-constrained environments.
• Experience with hardware interfaces and embedded communication protocols.

Responsibilities

• Design, develop, and optimize embedded firmware.
• Integrate hardware interfaces and maintain drivers.
• Collaborate with cross-functional teams and document processes.

Skills

Embedded firmware development

C/C++ programming

Troubleshooting hardware-firmware interactions

Documentation skills

Problem-solving skills

Education

Bachelor’s or Master’s degree in Electrical Engineering or related field

Tools

GDB

Logic analyzers

JTAG/SWD

Job description

Responsibilities

Firmware & Embedded Software Development

• Design, develop, and optimize embedded firmware in C/C++ for microcontrollers and SoCs.
• Implement and maintain drivers for various peripheral components (e.g., sensors, actuators, radios).
• Integrate hardware interfaces including SPI, UART, I2C, GPIO, PWM, and ADC.
• Work within embedded frameworks such as Zephyr RTOS, FreeRTOS, and TensorFlow Lite Micro.
• Conduct unit, integration, and system-level testing to validate embedded software performance and stability.

Hardware & Systems Integration

• Collaborate in system architecture design for embedded solutions to meet functional requirements.
• Review and contribute to schematic designs for embedded subsystems; troubleshoot based on circuit diagrams and datasheets.
• Support debugging of hardware-firmware interactions using tools such as oscilloscopes, logic analyzers, and debuggers (e.g., JTAG/SWD).

Prototyping & Fabrication

• Support rapid prototyping and iteration of IoT devices with in-lab fabrication tools.
• Validate hardware designs by running firmware integration tests in early development cycles.

Collaboration & Documentation

• Collaborate with cross-functional teams including cloud/backend, mobile app, and hardware design engineers.
• Document firmware architecture, configuration settings, communication protocols, and deployment processes.
• Mentor junior engineers and contribute to improving team development standards and workflows.

Requirements

Education

• Bachelor’s or Master’s degree in Electrical Engineering, Computer Engineering, Embedded Systems, or a related field.

Experience

• Hands-on experience in embedded firmware development.
• Strong programming proficiency in C/C++ for resource-constrained environments such as microcontrollers.
• Demonstrated experience with hardware interfaces and embedded communication protocols.
• Hands-on experience with firmware debugging and testing tools (e.g., GDB, serial consoles, logic analyzers).
• Experience using schematic diagrams to identify signal paths, interface connections, and potential hardware faults during embedded development.

Additional Qualifications

• Excellent problem-solving skills with a strong attention to detail.
• Ability to work independently as well as collaboratively in a fast-paced environment.
• Strong verbal and written communication skills, with the ability to document and present technical information clearly.

Good to have

• Experience with RTOS, low-power system design, and wireless communication stacks (BLE, Wi-Fi, LoRaWAN, etc.).
• Comfortable with end-to-end PCB development — from schematic to fabrication and bench testing.
• Exposure to edge ML, MQTT/CoAP protocols, or cloud integrations (AWS IoT, Azure IoT Hub, etc.).