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WenTao Z.
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WenTao Z.

Full Stack Developer | Bug Fixing | Code Review | Performance

In recent years, most of my work has fallen into two categories: solving hard problems in other people's systems and reviewing code. - Expensify — a $4,000 bounty for a one-line change: the diff was one line; finding it was the work. 16 PRs merged, 100+ reviewed as a reviewer. One of those bugs was Safari's, not the app's — I fixed it in the engine itself, and it was merged upstream. - Neovim — my favorite editor. A PTY bug had been open since 2020; I traced the root cause to Windows' console layer, and the fix landed in Neovim. 21 of my patches are now part of its core. - PHP_CodeSniffer — investigated how existing sniffs handle PHP 8 attributes, documenting formatting gaps and potential conflicts between automatic fixes. Different layers, one habit: fix the root cause, not the symptoms. If a workaround is unavoidable, I'll explain the trade-offs and agree on it with you first — it won't quietly ship as a fix. Async by default. I've worked across a 12-hour time difference for years, and written communication is where I'm strongest. A brief description and a link are a good place to start. I'll let you know if I need anything else. :)

🇨🇳Nanchang, China$75/hr100% JSS5.00 (72)Since Jun 2022

Earnings and projects

MRR (estimate)
≈$0

An estimate from an earlier read

World#61,106 / 412k
🇨🇳Country#236 / 2,007
Revenue, last 30 days
$0
Total earnings
$64k

Billed in all: $74k

World#61,106 / 412k
🇨🇳Country#236 / 2,007
Per project
$848
Projects, last 6 months
0
World#209,857 / 412k
🇨🇳Country#1,170 / 2,007
Projects in all
76

Across 80 contracts

99% fixed1% hourly
World#38,983 / 412k
🇨🇳Country#197 / 2,007

Earnings, last 30 days

$74.1kNothing earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$73k$74k$75k$76kOct 9Oct 24Nov 8

No data since Nov 5, 2026.

Skills