Skip to content
BackNov 7
Yao S.

Yao S.

Senior Software Engineer

I have more than ten years of working experience in POS terminal software development, just like POS terminals with LINUX OS and smart terminals with android OS, even some traditional MPOS terminals without OS. I did Low-level software development, middle-level software development(SDK), and applications development during these years. I was also responsible for developing and maintaining EMV L2 contact and contactless(UPI-quick pass, VISA-PayWave, MASTER-PayPass). However, I am good at Linux C/C++ programming and android application development. Currently, I also responsible for developing back-end software like payment gateway, which integrates some different payment channels all over the world. Moreover, I am familiar with the marketing development trend of china's technical product. I also have good skills for communicating with the supplier or clients with high efficiency. So if you can provide me an opportunity, I'll make sure to do this job well. thanks.

🇨🇳Changsha, China$20/hr95% JSS3.33 (2)Since Aug 2019

Earnings and projects

MRR
$0

Last 6 months ÷ 6

World#228,845 / 412k
🇨🇳Country#972 / 2,007
Revenue, last 30 days
—

Read daily since Oct 18, under 30 days

Total earnings
$6.8k

Billed in all: $7k

World#228,845 / 412k
🇨🇳Country#972 / 2,007
Per project
$754
Projects, last 6 months
0
World#209,850 / 412k
🇨🇳Country#1,170 / 2,007
Projects in all
9

Across 11 contracts

45% fixed55% hourly
World#212,268 / 412k
🇨🇳Country#968 / 2,007

Earnings, last 30 days

$7kNothing earned since Oct 18Billed in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$6.9k$7.0k$7.1k$7.2kOct 18Oct 28Nov 7

Tracked from Oct 18, 2026.

Skills