Hiep L.
Ho Chi Minh City, Vietnam
100%
Job Success
Top Rated Plus
Embedded Hardware Expert
$32.00/hr
Hello world!!!
My name is Hiep, I am an embedded hardware design engineer.
My expertise is designing hardware circuits, assembling, and testing the quality of the circuit.
Give me your requirements or your product specification, and then we can discuss the timeline, cost, and how we can work together.
Also, I have more than +3700 working hours, 100% Job Success on Upwork, and more than 8 years of experience in designing hardware for IoT Products, Consumer Products, and Edge devices, so I think I can use my experience to complete your project with the best result.
+ MY WORKFLOW:
- Receive your detailed requirements or specifications, discuss what you want and what I need to do.
- Design block diagram for the circuit: needs to be very detailed, it will decide what part will be used in the project.
- Design schematics: follow the block diagram to design the schematic for the product.
- Design PCB Layout: with requirements about Mechanical Design and Industrial Design, I will do the PCB Layout to fit with your Mechanical Design to achieve the best performance.
- Extract production data: BOM, CAD, GERBER, DESIGN, ASSEMBLY GUIDELINE, IMPEDANCE CONTROL REQUIREMENTS, ...
+ MY TECHNICAL EXPERIENCES:
- SoC/ MCU: STM32F0/F1/F2/F4/F7/H7, STM32L1/L4, MSP430, MSP432, ATMEGA, ATSAM, PIC, ESP8266, ESP32, CC2530, CC2538, nRF52810/ nRF51822/ nRF52832/ nRF52840/ nRF5340, ...
- Sensor: light sensor, CO, Smoke Sensor, Dust Sensor, Air Sensor, pH sensor, IMU sensor, Accelero, Gyro sensor.
- Biosensor SPO2/PPG (OB1203, MAX32664 sensor hub, MAX86176, MAX86178, AFE4950…), Skin temperature (AS6221, MAX30205, MAX30208), ECG (ADS1292, ADS1293, ADS1294, ADS1298, MAX86150, MAX30003,…), Heart rate, Blood pressure,...
- True wireless earbuds, headsets and speakers, Bluetooth ® LE Audio standard from Qualcomm: QCC5141, QCC5171, QCC5181,...
- Wireless communication: DA16200 BLE MCU, WiFi, BLE4.0/4.1/5.2, Lora, Zigbee, NFC, eSIM, GNSS/GPRS/4G/LTE Module: SIM900A, SIM908, Quectel MC60/M95/EG91x, SIM7600, SIM7080, SIM7090G...
- Digital and high-speed electronics design: - Memories DDRx/LPDDRx, SDRAM, Camera and display interfaces (MIPI-DSI, MIPI-CSI, DisplayPort, etc), Data communication interfaces (QSPI, SPI, UART, I2C, FMC, I2S, USB 2/3.x, etc), (
- RF Designs: 1-6 GHz (UWB, Wifi, BLE, ZigBee, GPS, NB-IoT, LTE-M/LTE, Z-Wave, etc), 13,6 MHz, 128 kHz (NFC, RFID, etc), 433 MHz (Custom protocols).
- Some industry circuits: Modbus, voltage to current/current to voltage converter, isolation interface, current/voltage measurement,…
- Ultra-low power consumption device hardware developments: Ultra-low locker using non-rechargeable battery with life-span of up to 10 years, some wireless devices with 2 years operation with 620mAh battery,…
- Power electronics: wireless charger, high power PD charger, BMS, PMIC, OV/OC/UV, high current PCB (30 – 100A),…
- Mass Production: Discussing, processing steps, and managing the manufacturing process of PCBs, PCBAs, and assembly devices, processes in production include: discussing with the bare PCB factory, building self-test documents, production testing PCBAs at the factory, documenting and testing, and managing the device testing process after assembling the device.
+ Some of the products that I have designed and released to the market:
- IoT products: Wearable devices tracking the biological index, Devices control hub over Wifi, Internet, Bluetooth, OBD devices,...
- Smart Home Product:
Design Home Gateway with Ethernet, WiFi, Zigbee, TFT LCD, ...
Design Smart Switch with capacitive touch, Zigbee communication, 220VAC/110VAC load control, ...
- Tracking Device: Using 3G/4G with GPS, this device is used for personal tracking
... and a lot of other products ...
I hope to work with you, to help you complete your project and release your product to the market
Best regards
Hiep Le
Work history
Work history
Embedded Hardware Expert
Aug 13, 2024
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Jun 19, 2025
"Hiep did an outstanding job on our embedded electronics project. He was professional, highly skilled, and delivered everything on time with excellent attention to detail. His expertise in electrical and…
Private earnings
Compact Battery IMU Prototype
May 17, 2024
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Dec 13, 2024
Private earnings
30 minute consultation
Dec 10, 2024
-
Dec 11, 2024
Private earnings
Hardware Prototype Design Planning
Oct 3, 2024
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Oct 6, 2024
Private earnings
Review bms design
Jul 2, 2024
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Jul 31, 2024
"Very easy to work with. professional work"
Private earnings
Mind-Body Evolution Device Prototype Phase - 2
Jun 9, 2023
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Apr 26, 2024
"Hiep did an excellent job with the project. From design, project management, timeline, communication, and quality."
Private earnings
Case design for biometric device
Jun 19, 2023
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Apr 25, 2024
"Excellent process from beginning to end. Very professional in regards to project management, communication, and delivery of the product. They took time to understand what we were trying to achieve…
Freelancer's response
"It was a pleasure to work with Gurjeet Birdee. Ideas were clear, good instruction was given and payment was prompt. I would gladly work with him again."
Private earnings
Firmware update over the air
Nov 15, 2023
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Apr 25, 2024
"Hiep performed this work in a timely and excellent manner. This was a multi-pronged project, and this specific task was completed quickly."
Freelancer's response
"Gurjeet Birdee is a great customer, he was very clear in his requests, always supportive when I needed help and payments were very prompt, recommend everyone to work with him"
Private earnings
IoT PCB
Apr 3, 2023
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Jan 7, 2024
No feedback given
Private earnings
Hardware PCB Development
Mar 21, 2022
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Jan 7, 2024
No feedback given
Private earnings
Firmware development for project
Jun 10, 2025
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Present
Job in progress
Private earnings
Power Design Optimization
Jun 10, 2025
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Present
Job in progress
Private earnings
Embedded Electronics Engineer for Development Project
Jun 9, 2025
-
Present
Job in progress
Private earnings
Prototyping Expert Needed for New Wearable Device
Mar 18, 2025
-
Present
Job in progress
Private earnings
PCB and general circuit designs for IOT devices
Mar 11, 2025
-
Present
Job in progress
Private earnings
PCB Design Engineer for Compact IoT Project
Jan 28, 2025
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Present
Job in progress
Private earnings
Get PCB manufacturing quotes
Aug 16, 2024
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Present
Job in progress
Private earnings
Instrument tracker with companion app.
Aug 16, 2024
-
Present
Job in progress
Private earnings
Redesign Lithium 10s bms
Jul 31, 2024
-
Present
Job in progress
Private earnings
Bluetooth Earbud Development with EEG Streaming
Jul 5, 2024
-
Present
Job in progress
Private earnings
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Skills
Skills
- Product Design
- Hardware Prototyping
- Firmware Programming
- Internet of Things Solutions Design
- Bluetooth
- Electrical Layout Design
- Altium Designer
- Embedded C
- Hardware Design
- PCB Design
- Embedded System
- STM32
- C++
- ESP32
Project catalog
Get started working with Hiep quickly with these predefined projects.
Get started working with Hiep quickly with these predefined projects.
You will get a perfect embedded products include hardware, firmware and software
From $200
5 days delivery