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I will fix and optimize your react nextjs or angular web app
Kashif
About this gig
Is your React, Next.js, or Angular web app slow, broken, or throwing errors? I can help diagnose and fix it.
Im a Senior Frontend Engineer with 5+ years of experience building and maintaining production SaaS applications. I work with React, Next.js, Angular, and TypeScript, with experience on platforms serving 50,000+ active users.
I can help with:
React, Next.js & Angular bugs
JavaScript/TypeScript errors
API and authentication issues
UI, responsive & cross-browser problems
Slow rendering and performance issues
Next.js build, routing & deployment errors
Component and code refactoring
REST & GraphQL integration issues
Cypress/Jest testing issues
Why choose me?
I focus on finding the root causenot just applying a temporary workaround. I write clean, maintainable TypeScript and follow production development practices.
Ive worked on SaaS products, design systems, accessibility, performance optimization, APIs, testing, and complex frontend architecture.
Please message me before ordering with the issue, repository/code details, and expected outcome so I can confirm the scope.
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 Kashif
Kashif
- FromPakistan
- Member sinceMay 2025
- Last delivery3 months
Languages
English
Full Stack Engineer with 5+ years of experience building scalable web applications. I create high-performance UIs and secure backend systems using React, Next.js, Node.js, and MongoDB. Delivered platforms including CRM, AI recruiting SaaS, and real-time marketplaces.
Key strengths: clean code, full ownership from frontend to backend, and reliable delivery.
Tech stack: React, Next.js, TypeScript, Node.js, NestJS, MongoDB, AWS, Docker
Let’s build a solution that scales with your business.
My Portfolio
Other Website Development Services I Offer
FAQ
What do you need from me to start?
Just share your Figma file with view access. If you have brand guidelines, fonts, or color tokens, share those too. The more complete the design the faster I can deliver.
What if my Figma design is incomplete?
I can work with partial designs and use my judgment for spacing, typography, and minor details. I will flag anything unclear before starting so there are no surprises.
Will it be responsive on mobile?
Yes, every conversion is fully responsive across mobile, tablet, and desktop. I test on multiple screen sizes before delivery.
Do you use Tailwind CSS only or other styling options?
I primarily use Tailwind CSS as it gives the cleanest and most maintainable output. I can also use SCSS, Material UI, Ant Design, or Shadcn UI if your project requires it.
Can you add animations and interactions?
Yes. Basic hover states and transitions are included. Advanced animations with Framer Motion can be added as an extra or included in the premium package.
Will I get the source code?
Yes, full source code delivered via GitHub or as a zip file. Clean TypeScript components, proper folder structure, and ready to deploy on Vercel or any platform.
What if the final result does not match the design?
Revisions are included in every package. I will keep adjusting until the output matches your Figma design exactly.
Can you connect the frontend to a backend after conversion?
Yes. API integration, authentication, and backend connection can be added as an extra or discussed as a separate project.
Do you provide support after delivery?
Yes, I provide ongoing support and maintenance if needed.
