YanXia X.

Embedded Engineer | Firmware | PCB | IoT | Drone

👋 Hello, I am YanXia Xu. Embedded Systems Engineer with nearly 30 years of experience in industrial automation and embedded firmware development. Specialized in MCU firmware, RTOS-based systems, industrial communication protocols, and embedded Linux platforms. Extensive experience supporting Japanese enterprise projects and long-term industrial product maintenance. Strong background in debugging, hardware-software integration, and reliable embedded system design.

🇨🇳Dalian, China$30/hr100% JSS5.00 (7)Since May 2026

Earnings and projects

MRR

$1,700$1.7k

Last 6 months ÷ 4.6 months active (since Jun 2026)

#27,722 / 412,022 / 412k

🇨🇳#137 / 2,007 / 2,007

Revenue, last 30 days

$4,959$5k

Last 6 months: $7.8k

#5,741 / 412,022 / 412k

🇨🇳#41 / 2,007 / 2,007

Total earnings

$7,929$7.9k

Billed in all: $7,954$8k

#215,674 / 412,022 / 412k

🇨🇳#910 / 2,007 / 2,007

Per project

$721$721

$871 in the last 6 months

#150,286 / 412,022 / 412k

🇨🇳#572 / 2,007 / 2,007

Projects, last 6 months

Across 10 contracts

80% fixed20% hourly

#21,105 / 412,022 / 412k

🇨🇳#133 / 2,007 / 2,007

Projects in all

Across 12 contracts

83% fixed17% hourly

#192,417 / 412,022 / 412k

🇨🇳#885 / 2,007 / 2,007

$8k+$5k earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch

Skill rankings: Top 7% in PLC Programming

Ranked by MRR among everyone on Upwork with the skill.

#15ARM Microcontroller70 freelancers · 🇨🇳 #2Top 21%🇨🇳#2 of 5
#16Schematic141 freelancers · 🇨🇳 #2Top 11%🇨🇳#2 of 4
#17FPGA169 freelancers · 🇨🇳 #2Top 10%🇨🇳#2 of 9
#19PLC Programming290 freelancers · 🇨🇳 #1Top 7%🇨🇳#1 of 4
#20Microcontroller194 freelancers · 🇨🇳 #2Top 10%🇨🇳#2 of 8
#25WiFi168 freelancers · 🇨🇳 #2Top 15%🇨🇳#2 of 8
#26Power Electronics221 freelancers · 🇨🇳 #2Top 12%🇨🇳#2 of 5
#28Analog Electronics193 freelancers · 🇨🇳 #2Top 15%🇨🇳#2 of 5

YanXia X.

Earnings and projects

Earnings, last 30 days