China · UTC+8 · Remote

Overnight debugging for SaaS teams.

I’m a full-stack developer and DBA based in China. US night hours are my working hours.

Send a production or database issue before you sleep. Wake up to a root-cause report, patch, or diagnosis.

DM me on X Email me

Overnight Debugging

Async technical help for SaaS founders and small teams.

  • Production bug triage
  • Database performance diagnosis
  • Slow SQL analysis
  • Monitoring alerts
  • Root-cause reports
  • Small patches and PRs

China Market Pulse

China market signals in English for global traders.

  • A-share market summaries
  • Policy keyword monitoring
  • Sector heat tracking
  • Hong Kong tech context
  • CNH / A50 / ETF signals
  • No stock recommendations

Pilot Pricing

Root-Cause Diagnosis

$99

Async diagnosis with findings and next steps.

Small Bug Fix / PR

$299

Small patch or pull request for reproducible issues.

SQL Performance Diagnosis

$399

Slow query review, execution plan analysis, and suggestions.

Your night = my day.

If you run a SaaS product and need async production/database help, send me a message on X.

Contact CN Signal Lab