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Fiverr Pro
English
$
USD
I will fix and finish your existing saas or ai built web app
Hadiqa S.
About this gig
Your app is almost done, but the last 20% is eating all your time.
Im a full-stack software engineer with 4 years of experience working on SaaS, marketplaces, fintech, booking/payment and real-time products. I step into existing codebases whether built by another developer or started with Lovable, Replit, Bolt, Cursor, v0 or AI and fix the hard parts without rebuilding what already works.
I can help with bugs and broken logic, React/Next.js/TypeScript issues, Node.js APIs, Supabase/PostgreSQL/MongoDB, authentication, Stripe/payments, webhooks, third-party APIs, build/deployment problems, and unfinished features.
You get root-cause diagnosis, clean scoped fixes, testing of the affected flow, and a clear summary of what changed.
Please message me before ordering Standard or Premium so I can review the scope and recommend the right package.
Get to know Hadiqa S.
Hadiqa S.
Full Stack Developer, SaaS, APIs and AI Integrations
- FromPakistan
- Member sinceAug 2019
- Avg. response time1 hour
- Last delivery6 years
Languages
English
I'm a full-stack software engineer with 4 years of experience building and improving SaaS products, marketplaces, booking systems, fintech platforms and real-time applications. I work across React, Next.js, Node.js, APIs, databases, authentication, payments, AI-powered features and third-party integrations. I've built products from scratch and worked inside large existing codebases to debug, extend and ship complex functionality. If you have an idea, unfinished SaaS, broken app or integration problem, send it my way.
My Portfolio
FAQ
Can you work on apps built with Lovable, Replit, Bolt, Cursor or other AI tools?
Yes. I can work with existing AI-assisted/vibe-coded projects as well as applications built by previous developers. I work with the underlying code, APIs, databases and application logic rather than relying only on prompts.
Can you work on an existing codebase without rebuilding it?
Yes. My first approach is to understand the existing architecture, identify the root cause and preserve what already works. I only recommend rebuilding a section when there is a technical reason to do so.
Do you fix backend issues too?
Yes. I work across frontend and backend, including Node.js APIs, databases, authentication, permissions, webhooks and third-party integrations.
Can you fix Stripe, authentication or database problems?
Yes. These are common rescue scenarios. Because payment, auth and database issues vary significantly in complexity, please message me first so I can confirm the scope.
Can you finish my entire SaaS or MVP?
Yes, depending on the remaining scope. A large unfinished application should be reviewed first, and I’ll provide a custom offer based on what is actually left rather than forcing it into a fixed bug-fix package.
What counts as a revision?
A revision covers adjustments to the functionality agreed in the original order. New features or unrelated bugs discovered later are separate work.
Can you work with a live production application?
Yes, but I strongly prefer testing changes in a development or staging environment first whenever possible to reduce risk to live users and data.
