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ShengLin Gu
@dltech75
Level 1
Embedded Systems Engineer, PCB design Expert, Prototype, Firmware Development
China
English, Chinese
About me
I’m an Electronics Engineer, Embedded Developer, and PCB Designer specializing in wireless electronics, microcontroller systems, and intelligent embedded solutions.
With over 7 years of experience, I’ve designed and implemented cutting-edge electronic systems, robotics, and IoT projects for both commercial and industrial applications.
Languages & Firmware: C/C++, Python, Arduino IDE, Embedded C
Hardware & PCB: Altium Designer, PCB Layout, Schematic
Wireless & IoT: BLE, MQTT, WiFi, RFID, LoRa (Optional)
Robotics & Automation: Motor Control, PID Systems, CNC Programming, Robotics Integration
Skills
ShengLin Gu
Offline •
Average response time: 1 hour
See my services
Embedded Systems & IoT
I will provide iot and wearable products prototype
Printed Circuit Boards (PCB)
I will design high speed multilayer pcb schematic, layout, gerber, bom and drc check
Portfolio
Work experience
Senior Embedded engineer
Dalian Shiliang Sci-Tech Co.,Ltd • Full-time
Aug 2021 - Oct 2025 • 4 yrs 2 mos
I developed reliable and scalable embedded firmware for modern hardware systems. ✔ STM32 / ESP32 / Nordic ✔ FreeRTOS / Embedded Linux ✔ Communication: UART, SPI, I2C, CAN, USB ✔ IoT Integration: MQTT, AWS IoT, Firebase Experience includes: - Real-time data acquisition systems - BLE-based healthcare devices - Wi-Fi monitoring systems - GPS and vehicle safety systems
4 Reviews
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Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
1-4 out of 4 Reviews
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Most relevant
davidmatteso410
Repeat Client
United States
Excellent experience working with this developer. Communication was professional and responsive throughout the project. The firmware and IoT implementation were delivered with good code structure and stable functionality. BLE communication, sensor integration, and overall system behavior worked as expected....
Seller's Response
Helpful?
davidmatteso410
Repeat Client
United States
It was a pleasure working with this freelancer. They were responsive, professional, and paid close attention to the project requirements. The quality of work was outstanding, revisions were handled quickly, and everything was delivered before the deadline. I would definitely work with them again.
Seller's Response
Helpful?
manoj_kumar7172
India
Great experience with the PCB design revision—changes were implemented accurately and efficiently. Communication was clear and professional throughout the process, and I would definitely like to work together again.
Seller's Response
Helpful?
alexyousefian
United Kingdom
Helpful?
