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Fiverr Pro
English
$
USD
I will fix bugs in your ai built web app, saas, or API
Merlin
About this gig
Your AI-built web app almost works, but auth, data, APIs, deployment, or automation keeps failing.
I will reproduce the issue, find the root cause, make the agreed code change, and verify the fix with tests or clear evidence.
Good fit:
- AI-generated or partially finished web apps
- Node.js or TypeScript backend errors
- React, Next.js, or Vue bugs
- PostgreSQL/Supabase auth or data issues
- APIs, webhooks, Stripe, scripts, tests, CI, or deployment failures
You receive:
- root-cause diagnosis
- agreed code patch
- verification evidence
- concise notes explaining what changed
I build and operate marly.studio, a live SaaS spanning frontend, APIs, background workers, PostgreSQL, authentication, Stripe, testing, CI/CD, and production deployment. I use AI-assisted tools where useful, but every change is inspected and verified by me.
Message before ordering with expected vs actual behavior, stack, reproduction steps, redacted logs or screenshots, access method, and deadline.
Packages cover bounded issues. New features, large refactors, migrations, formal security audits, or unclear multi-system failures need a custom offer.
Get to know Merlin
Merlin
Full Stack Developer TypeScript Node JavaScript Vue React
- FromNew Zealand
- Member sinceOct 2016
Languages
English
I'm a full-stack developer in Christchurch, New Zealand, with about two years of professional experience building and maintaining web applications. I work primarily with TypeScript, JavaScript, Node.js, Vue, React/Next.js, PostgreSQL/Supabase, Stripe, REST APIs, Playwright, Vitest, and GitHub Actions. My strongest independent product is marly.studio, a live SaaS application spanning frontend, backend, background workers, billing, authentication, testing, and deployment. I focus on practical bug finding, clear communication, maintainable code, and reliable tests.
FAQ
What kinds of software can you fix?
Web apps, APIs, backends, databases, scripts, automations, tests, CI, and developer tooling across multiple languages. Send the stack, symptoms, and repository details so I can confirm fit before you order.
Will you actually change the code?
Yes. These packages include investigation and the agreed code fix. I will explain what changed and how I verified it. Large features, migrations, or refactors require a custom offer.
Can you guarantee that the code will be bug free or secure?
No. I will verify the agreed fix, but bounded software work cannot prove an entire system is bug free or secure. This Gig is not penetration testing, a formal security assessment, or compliance certification.
What counts as a small or medium issue?
A small issue is one reproducible fault usually isolated to a file or flow. A medium issue has related causes or broader integration work. Message first and I will confirm the right package.
Can you fix an AI-built or partially generated app?
Yes, if you can provide the source code and a reproducible problem. I inspect the real code, configuration, data flow, and logs, then verify the agreed fix instead of assuming the generated implementation is correct.
