IOT Engineer
CÔNG TY CỔ PHẦN WASH 24H
Mô tả công việc
· 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.
Yêu cầu công việc
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.
Quyền lợi
Laptop Chế độ bảo hiểm Đồng phục Chế độ thưởng Đào tạo Tăng lương Công tác phí Nghỉ phép năm