I will fix bugs integrate apis and optimize performance in your web app


About this gig
Fix, Build & Transform Your MERN + Next.js Website Fast, Secure & Custom
Is your site buggy, slow, or missing critical features?
I specialize in fixing complex issues and developing fullstack websites using the powerful MERN stack (MongoDB / SQL, Express/Next.js Server, React, Node.js) tailored exactly to your business needs.
What you'll get:
- Precise bug & error fixing stop crashes and remove annoying issues
- Smooth API integration basic to advanced, for realtime data or external services
- Performance tuning faster load times & optimized backend queries
- SEO improvements metadata fixes & technical tweaks for better visibility
- Security hardening patch common vulnerabilities & add safe error handling
- Postfix support quick help if new issues appear after delivery
I know what its like when your website holds back your business. My focus is to remove the pain points, fix bugs fast, and create a scalable, high performance site that wins you time, trust, and leads.
Why choose me?
- Fast delivery & clear communication
- Clean, maintainable code with comments
- Affordable pricing without cutting corners
Lets bring your vision to life or rescue your current site so it performs like it should!
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 Anas A
Full Stack Developer in Reactjs, Nextjs, Nodejs, APIs, SQL, NoSQL
- FromPakistan
- Member sinceMay 2024
Languages
Urdu, English
My Portfolio
FAQ
Do you offer performance optimization for slow websites?
Yes! I can analyze and optimize your site using techniques like lazy loading, code splitting, caching, and removing unnecessary re-renders.
Will you fix both frontend and backend bugs?
Yes, I can fix issues on both the frontend (UI, state, components) and backend (API routes, database connections, logic errors) depending on the selected package.
Do you make Seo friendly websites
Yes, your site will be more SEO optimized if site made in Nextjs not reactjs which has Server Side Rendering which is good for search engines
What technologies do you support?
I specialize in React.js, Next.js, JavaScript, TypeScript, Node.js, and REST APIs. I can also work with tools like Axios, Fetch, Prisma, Firebase, Redis and MongoDB.
Can you integrate basic third-party APIs like Stripe, Firebase, or OpenAI?
Absolutely! I can integrate most public APIs including payment systems, authentication providers, AI tools, or any RESTful services.
Can you add caching to my API or frontend data fetching?
Yes. I work with React Query(for frontend), NodeCache, Redis, and server-side caching strategies like revalidation in Next.js.

