I will fix your broken website bugs, speed, responsiveness, payment and API issues

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Zain Saeed
fix your broken website bugs, speed, responsiveness, payment and API issues
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fix your broken website bugs, speed, responsiveness, payment and API issues

About this gig

Is your website broken, slow, or losing customers? I'll rescue it fast.


I'm a full-stack developer with 8+ years of experience (ASP.NET Core, Angular, C#, REST APIs, Node.js, Express.js, React, Next.js, Python, PHP, Laravel). I specialize in diagnosing and fixing real website problems quickly no fluff, no guesswork.


What I fix:

  • Responsiveness issues (mobile/tablet broken layouts)
  • Speed & performance optimization (slow load times, lazy loading, caching)
  • Deployment errors (server config, hosting issues, build failures)
  • Payment gateway issues (Stripe, PayPal, checkout failures)
  • API bugs & broken integrations (REST, third-party APIs)
  • UI/UX fixes (broken elements, CSS glitches, layout problems)
  • General bug fixing & debugging


Why choose me?

I diagnose the root cause not just patch symptoms 48-72 hour delivery on most fixes.

Clear communication throughout no ghosting and you get a written summary of what was found and fixed.


How it works:

> Share your site + describe the problem

> I assess and confirm scope before we begin

> You get a fixed, tested website delivered fast


Not sure if I can fix your issue? Message me first I'll be honest with you.

  • Platform

    • Custom

  • Website type

    • E-Commerce store
    • Business
    • Landing page
    • Online communities
    • Saas

  • Programming language

    • C#
    • Go
    • Java
    • JavaScript
    • PHP
    • Python
    • TypeScript
    • HTML & CSS
    • React
    • ASP.NET
Respect third-party rights

Please be aware that it is against Fiverr's policies for sellers to include themes, templates, or any other elements that infringe third-party rights or applicable laws in the delivered work. Read more about in our Guide to Responsible Digital Creation.

Get to know Zain Saeed

Zain Saeed
4.4(20)
  • FromPakistan
  • Member sinceJul 2016
  • Last delivery2 years

  • Languages

    English, Arabic, French, Russian
I build scalable, high-performance websites and web applications that drive real business growth. With 8+ years in full-stack development, I specialize in custom websites, SaaS platforms, and eCommerce solutions. My expertise includes ASP.NET Core, React.js, Next.js, Angular, Node.js, PHP, Python (Django), Magento, Shopify, and API integrations. I deliver secure, SEO-friendly, and conversion-focused solutions. Backed by a skilled team handling end-to-end execution with speed and precision.

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