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Tan L.
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Tan L.

Firmware Engineer | Embedded Specialist | Yocto | Buildroot | Openwrt

I am an Embedded Programmer, Linux/ARM BSP/firmware engineer (10+ years). ◉ Prototype Development kit: Raspberry Pi, Beaglebone, IMX6 and IMX8, Quectel AG35 EVB, NanoPi Air, OrangePi Win, ESP32, Arduino UNO R3, STM32, Variscite VAR-SOM-MX93 ◉ Have solid knowledge of the standard interface such as I2C, SPI, UART, CAN, RS232, USB Host/Device, Ethernet, SDCard ◉ IoT devices with wireless connectivity such as LTE, BLE, WIFI, GPS, Lora(RFM95CW) ◉ Modem Quectel: Automotive AG35, 5G RM520N ◉ Good experienced with Audio Codec chips: TI(TLV320AIC3109), ADAU1961WBCPZ ◉ Solid experience with U-boot porting, BSP, Linux kernel, Device drivers development/optimization for the small Linux SoC boards. ◉ Yocto, OpenWRT, Buildroot ◉ OTA: swupdate, mender, rauc ◉ Cybersecurity ◉ Chipset: Allwinner A64, Allwinner H3, Allwinner T113, NXP i.MX6, i.MX8, Quectel AG35, Qualcomm MDM9x07, STM32L4, ◉ Language: C/C++, Python, Bash scripting, Golang ◉ Framework: gstreamer, boost Our key goal is to deliver high-class products and services to our clients. A combination of long-term experience, and perfect communication allows us to work with clients all over the world.

🇻🇳Ho Chi Minh City, Vietnam$30/hr100% JSS5.00 (12)Since Sep 2021

Earnings and projects

MRR
$7.1k

Last 6 months ÷ 6

World#2,669 / 412k
🇻🇳Country#25 / 3,463
Revenue, last 30 days
$6.7k

Last 6 months: $43k

World#3,284 / 412k
🇻🇳Country#28 / 3,463
Total earnings
$342k
World#6,627 / 412k
🇻🇳Country#57 / 3,463
Per project
$18k

$21k in the last 6 months

World#7,491 / 412k
🇻🇳Country#58 / 3,463
Projects, last 6 months
2
0% fixed100% hourly
World#88,917 / 412k
🇻🇳Country#941 / 3,463
Projects in all
19
37% fixed63% hourly
World#138,391 / 412k
🇻🇳Country#1,138 / 3,463

Earnings, last 30 days

$342k+$6.7k earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$335k$340k$345kOct 9Oct 24Nov 8

Skill rankings: 🇻🇳#1 in 3 skills of 15 in Vietnam

Rarest: top 3% in C++, of 88. Ranked by MRR among everyone in Vietnam with the skill. 5 skills with fewer than 10 freelancers aren't counted.

  1. 1Qt Framework13 freelancersTop 8%
  2. 1Internet of Things12 freelancersTop 8%
  3. 1MQTT10 freelancersTop 10%
  4. 2Linux56 freelancersTop 4%
  5. 2Embedded Linux24 freelancersTop 8%
  6. 2FreeRTOS13 freelancersTop 15%
  7. 3C++88 freelancersTop 3%
  8. #4Embedded C28 freelancersTop 14%