Tuyển dụng IOT Engineer tại Hồ Chí Minh

• Develop, test and maintain C/C++ firmware on ESP32 / ESP32-S3 microcontrollers for the control boards of automatic car wash stations.
• Control actuators (pumps, solenoid valves, motors, power relays) and process sensor signals over UART, SPI, I2C, GPIO, PWM and ADC.
• Build and maintain device telemetry to the monitoring platform over MQTT; set up dashboards and threshold-based incident alerts.
• Implement Wi-Fi provisioning and automatic device onboarding when new stations are installed.
• Deploy over-the-air (OTA) firmware updates with rollback; secure device communication with TLS encryption and digital certificates.
• Work with the product – application team to synchronise device state with the JETX application: opening and closing wash sessions, wash validation and reconciliation.
• Test firmware on the bench and at live stations; use logic analyzer, oscilloscope and multimeter to analyse and resolve faults.
• Support the technical team in installing, wiring, configuring and accepting electronic equipment at stations; diagnose remotely and attend site for complex incidents.
• Prepare technical documentation, troubleshooting guides and technical training for the operations team.
• Authorised to propose halting or rolling back a firmware release when a risk to station operation is detected.
• Perform other tasks as assigned.

1. Education

• Graduated from college or university in Electrical – Electronics, Computer Engineering, Embedded Systems, Mechatronics, Automation or a related field.
• Able to read and understand schematics, wiring diagrams and technical documents, including documents in English.

2. Knowledge and skills

• Proficient in C/C++ for embedded systems: pointers, memory management, basic object-oriented programming.
• Hands-on experience with ESP32 / ESP32-S3 or equivalent microcontrollers: GPIO, PWM, ADC, timers, interrupts (ISR), finite state machines (FSM) and FreeRTOS.
• Experience with MQTT and Wi-Fi (Station / Access Point modes, provisioning); understanding of TCP/IP at application level.
• Proficient with Git, embedded development environments (PlatformIO, ESP-IDF or equivalent) and basic measurement instruments.
• Understanding of relay control, optocoupler isolation and flyback protection for power loads.
• Preference for candidates who have implemented OTA with rollback and TLS / X.509 security, worked with device monitoring platforms (ThingsBoard or equivalent), used Python for test tooling and data processing, or have knowledge of image processing and computer vision (OpenCV).

3. Experience

• At least 01 year of experience in embedded programming or IoT device development, including internships and projects with a completed product.
• Preference for candidates who have worked with multi-site device fleets or with outdoor equipment in wet environments.

4. Health requirements

• Good health, able to work at the warehouse and at business locations.
• Able to travel when required and to provide support outside working hours when an incident affects station operation.

5. Soft skills

• Analytical thinking, methodical troubleshooting and persistence in finding root causes.
• Responsible, careful and honest; cooperates well with other departments.
• Proactive in learning new technologies and equipment; clear in documentation and communication.

6. Occupational safety

• Strictly comply with occupational safety regulations, especially electrical safety when working on station equipment.
• Use personal protective equipment (PPE) in full.

BENEFITS

• Income from ……
• …… million VND/month, negotiable based on capability.
• Full social insurance, health insurance and unemployment insurance as regulated.
• Birthday allowance and annual team building.
• Annual salary review.
• Provided with the equipment, components and measurement tools required for the job.
• Travel allowance when working at distant business locations.
• Training and professional development; working on an IoT product operating across the entire station network.

WORK LOCATION AND WORKING HOURS

• Working hours: 8h30 - 17h30, …… days/week.
• Work location: No. 23, Street 60 - TML, Cat Lai, Ho Chi Minh City and Jetx business locations.