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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, Embedded Linux
Hardware & PCB: PCB Layout, Schematic, Altium Designer, KiCAD, EasyEDA
Wireless & IoT: BLE, MQTT, WiFi, RFID, LoRa
Robotics & Automation: Motor Control, PLC, Robotics Integration
Skills
ShengLin Gu
$20/hour
Offline •
Average response time: 1 hour
See my services
Embedded Systems & IoT
I will do iot prototype, schematics, pcb design, review, ble, firmware, jlcpcb in china
Embedded Systems & IoT
I will do firmware for arduino, stm32, esp32, nrf52, freertos, zephyr, ble stack, ota
Want to work on an hourly basis?
Tell ShengLin Gu what you need.
$20
/
hourPortfolio
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
13 Reviews
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Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
1-5 out of 13 Reviews
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danielpons289
Argentina
Excellent engineering work. Detailed, well-documented and backed by real calculations. Took the review comments seriously, reworked the analysis properly and even corrected one of my own assumptions with datasheet evidence. Clear communication throughout. Highly recommended.
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kareem_manor
United Kingdom
Excellent service from start to finish! The quality of the work was outstanding, communication was great, and everything was delivered professionally and to a high standard. Very knowledgeable, reliable, and easy to work with. Highly recommended, and I would definitely work with them again!
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jb3078
United Kingdom
Great work on thoroughly reviewing the feasibility of the hardware sketch and PCB design, and on successfully delivering the final report. Your dedication and technical insight made this project a real success. Thank you very much for your effort. Best Regards.
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oleg_lucasevici
Moldova
Shenglin is a highly professional engineer. When assigning him a project, there is no need to provide lengthy explanations. A single well-organized summary document is usually enough. He has the ability to understand the client’s expectations from limited information and turn them into the desired final...
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menge_ka
Spain
Really proactive and well documented and communicative person. The final result overdelivered my initial expectations. I would work and cooperate again without second thought. He is recommended to anyone outthere looking for a professional partner to have a worry free delivery of your product. Excellent service.
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