Thuan L.
FreelancerTop Rated PlusMedical | Embedded Hardware & Firmware | Electronics | PCB Design | AI
Member since 2020 · 100% Job Success
View on Upwork
WorldTop 0.37%
VietnamTop 0.3%
STM32Top 1%
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$5.9k
MRR
est. monthly
#3,848
World rank
of 1,045,565
$290k
Lifetime earnings
since 2020
100
Total jobs
completed
About
I am a professional embedded software engineer with more than 12 years of experience. My current areas of expertise are IoT Applications & Embedded Systems Design, including embedded hardware/software.
𝐌𝐘 𝐒𝐊𝐈𝐋𝐋𝐒:
- Know about MCU: Nordic, Silicon Labs, AVR, PIC, ESP, TI CC32xx, ESP32, Qualcomm QCC51xx, etc.
- Have experience in programming languages such as C/C++, C#, Java
- Solid knowledge of standard interfaces such as I2C, SPI, UART, and CAN.
- Have experience using debugging tools such as Segger Jlink, CAN bus analyzer, and Logic analyzer.
- IoT devices with wireless connectivity such as LTE, CAT-M1, NB-IoT, LoRa/LoRaWAN, BLE, WIFI, NFC
- Good experience in AWS Service, AWS IoT, AWS Shadow, and AWS Jobs.
- Good experience in Battery Management Systems based on BQ products from TI.
- Good experience with Audio Codec chips.
- Experience with AI/ML on Edge Impulse with nRF Connect
- True wireless earbuds, headsets and speakers, Bluetooth ® LE Audio standard from Qualcomm: QCC5141, QCC5171, QCC5181,...
We have worked with wearable devices and medical devices:
- ECG 1, 3, 12 leads with ADS1292, ADS1293, ADS1298
- EEG with ADS1299
- Body temperature with MAX302025, MAX30208
- PPG with MAX86178, MAX86178
- SPO2 with OB1203, MAX32664 sensor hub
- Vital signal with AFE4950
- OTA firmware update via Bluetooth/WIFI
End-to-End Embedded & Hardware Solutions
I provide complete product development services — from concept and design through prototyping, firmware, and production — for IoT, wearables, medical, and consumer electronics.
Hardware & PCB Design
- Multi-layer PCB design for high-reliability, high-performance systems
- High-speed design: USB 2.0, HDMI 2.0, DDR3/DDR4/LPDDR4, PCIe, NAND Flash, Ethernet (up to 10GBase-T1), PoE++
- Microcontrollers & SoMs: ARM Cortex-M3/M4 (STM32, ESP32, Nordic nRF52/53/91); custom boards for Raspberry Pi CM4, iMX8, Jetson Nano/Xavier/Orin, RK3588/3568, TI AM6254
- Power & analog: DC-DC (Flyback, Boost, Buck, LDO), BLDC/servo motor control, high-resolution ADC/DAC, audio circuits, and battery management (BMS)
- DFM/DFA and EMC/EMI compliance, with certification support (CE, FCC, FDA-ready)
Rankings
Where Thuan L. ranks by monthly revenue, worldwide, in Vietnam, and in every Upwork skill it competes in.
World#3,848 / 1,045,565Top 0.37%
Vietnam#33 / 10,941Top 0.3%STM32#15 / 1,377Top 1%
Embedded System#33 / 2,791Top 1%
Raspberry Pi#11 / 1,031Top 1%
ESP32#18 / 1,941Top 0.93%
LoRa#6 / 300Top 2%
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Freelancer snapshot
On Upwork since2020
Rating100% Job Success
Skills tracked5
Skills
STM32Embedded SystemRaspberry PiESP32
Thuan L. works mainly in STM32, ranking top 1% of freelancers in that skill.
MRR trendSoon
Last 12 weeks
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Competitors on the board
Who ranks just above and below by MRR across all freelancers.
This freelancer is #3,848 of 1,045,565 across all freelancers.
RankFreelancerMRRMRR trend
MRR benchmark
Thuan L. earns more than 99.63% of all freelancers we track.
Top 0.37%
among all freelancers we track
$0–$500
32%
$500–$1k
12%
$1k–$2.5k
17%
$2.5k–$5k
13%
$5k–$10k
12%
$10k–$25k
10%
$25k–$50k
3%
$50k+
1%
Thuan L.'s bracket · $5.9k
You32%$0–$500
You12%$500–$1k
You17%$1k–$2.5k
You13%$2.5k–$5k
You12%$5k–$10k
You10%$10k–$25k
You3%$25k–$50k
You1%$50k+
Thuan L. earns an estimated $5.9k/mo. That's 4.1× the typical freelancer and more than 99.63% of everyone we track.
Freelancers with no recent MRR are excluded. Only the 151,012 freelancers with active monthly revenue are ranked here.
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MRR is an estimate from Upwork's public figures - not an Upwork-official number.