b
blacklittle

Sixiong Z.

@blacklittle

Stripe and Supabase fixes for AI built apps

China
English
About me
I help founders finish AI-built apps. If your Lovable, Base44, Replit or Bolt app works in preview but breaks with real users and real money, I fix the last mile: Stripe payments and webhooks, Supabase auth and RLS, deployment, domains and basic security. I build and run my own live SaaS products (Next.js, Stripe, Postgres, Cloudflare), so I know where these apps break. Read-only diagnosis first, fixed scope, clear written handover. Based in UTC+8, fast async replies.... Read more

Skills

b
blacklittle
Sixiong Z.
Offline • 
Average response time: 1 hour

See my services

Deployments & DevOps
I will fix, secure and deploy your lovable, base44 or replit app to production
From$145 / projectMore details
Troubleshooting & Improvements
I will diagnose why your lovable, supabase or stripe app is broken
From$25 / projectMore details

Portfolio

Work experience

Independent

Independent Full-Stack Developer & Founder

Independent • Self-employed

Feb 2025 - Present • 1 yr 8 mos

I design, build and run my own web products end to end: ConceptViz (AI science illustration, ~200k monthly visits), EduViz, Rap Duet and Unraster. Day to day that means Next.js and React front ends, Postgres and Supabase data with row-level security, Stripe subscriptions and webhooks, Cloudflare (DNS, R2, Workers), deployment and technical SEO. I now help other founders get AI-built apps from preview to a stable, paying production launch.