I will fix bugs and optimise your react or nextjs app fast

B
blackash_web
B
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Jaber

Level 2

5.0
5.0
fix bugs and optimise your react or nextjs app fast
Full Screen
fix bugs and optimise your react or nextjs app fast
Full Screen
fix bugs and optimise your react or nextjs app fastfix bugs and optimise your react or nextjs app fast

About this gig

Is your React or Next.js app throwing errors, running slow, or behaving strangely?


Don't worry I will quickly diagnose and fix bugs in your React or Next.js application so you can get back to business fast.


**What I can fix:**

- Console errors & warnings

- Component rendering / state management issues (useState, useEffect, Redux, Zustand, etc.)

- API integration problems (fetch, Axios, React Query, etc.)

- Next.js specific issues (App Router, Server Components, build errors, hydration errors)

- Layout & responsive design bugs

- Performance issues (slow loading, re-renders, bundle size)

- Deployment & Vercel/Netlify issues

- Memory leaks & optimization

- Any other JavaScript/React-related bugs


**My process:**

1. You share your repo (GitHub/GitLab) or code + error details

2. I analyse the problem (usually within hours)

3. I fix it cleanly with best practices

4. I explain what caused the issue + how I fixed it

5. I deliver updated code + live preview if needed


I deliver clean, optimised, and maintainable code.

Message me with your issue before ordering so I can give you the best package recommendation.

Let's get your app working perfectly again!

  • Programming language

    • JavaScript

  • Expertise

    • Algorithms & Data structures
    • Debugging
    • Performance
    • Security
    • Databases

  • Frontend framework

    • jQuery
    • Next.js
    • React.js
    • Tailwind CSS

  • Backend framework

    • Express.js
    • Next.js

Get to know Jaber

Jaber

A passionate Artist of Code

4.9(358)

Level 2

  • FromBangladesh
  • Member sinceJul 2018
  • Avg. response time1 hour
  • Last delivery1 month

  • Languages

    Bengali, English, German, Spanish
Hi, I’m Jaber — a passionate web developer who turned curiosity into a career. What started in 2014 as a simple fascination with code has grown into a decade of real-world experience and over 5,000 successfully completed projects across global marketplaces. I take pride in creating practical, high-quality web solutions that solve real business problems — efficiently and elegantly. My approach is always methodical, transparent, and professional, ensuring that every project is completed to perfection. There’s no greater satisfaction for me than turning an idea into a functional.

My Portfolio

Other Software Development Services I Offer

Reviews

7 reviews for this Gig
5.0

(7)
(0)
(0)
(0)
(0)
Rating Breakdown
  • Seller communication level
    5
  • Recommend to a friend
    5
  • Service as described
    5
Sort By
Most relevant
  • V
    image-docs

    vwake_07

    Repeat Client

    IN

    India

    5

    This Guy is a REAL GEM on Fiverr . thanks again.

    Helpful?
    Yes
    No
  • H
    image-docs

    hridayaragam

    Repeat Client

    IN

    India

    5

    excellent professional service

    Helpful?
    Yes
    No
  • G

    go4services

    PK

    Pakistan

    5

    Unexpected work! I asked more than 20 developers to do this task but only Jaber was able to do it. He did all the changes again and again without complaining. Very Talented, Problem Solver along with Amazing Communication. Very fast delivery. I feel so bad to pay so less. He deserved far more. Thanks man! Will definitely hire only you next time.

    Helpful?
    Yes
    No
  • L
    image-docs

    lolaurencelle

    Repeat Client

    CA

    Canada

    5

    Very fast service and exactly what I needed help with. Thanks so much!

    Worksample image
    Helpful?
    Yes
    No
  • G

    ganderas

    Repeat Client

    GR

    Greece

    5

    Excellent job! Delivery was very fast and the communication was perfect! Nothing more to ask for. Will use the services again in the future for sure! A+++

    Helpful?
    Yes
    No
Reviews

7 reviews for this Gig
5.0

(7)
(0)
(0)
(0)
(0)
Rating Breakdown
  • Seller communication level
    5
  • Recommend to a friend
    5
  • Service as described
    5
Sort By
Most relevant
  • V
    image-docs

    vwake_07

    Repeat Client

    IN

    India

    5

    This Guy is a REAL GEM on Fiverr . thanks again.

    Helpful?
    Yes
    No
  • H
    image-docs

    hridayaragam

    Repeat Client

    IN

    India

    5

    excellent professional service

    Helpful?
    Yes
    No
  • G

    go4services

    PK

    Pakistan

    5

    Unexpected work! I asked more than 20 developers to do this task but only Jaber was able to do it. He did all the changes again and again without complaining. Very Talented, Problem Solver along with Amazing Communication. Very fast delivery. I feel so bad to pay so less. He deserved far more. Thanks man! Will definitely hire only you next time.

    Helpful?
    Yes
    No
  • L
    image-docs

    lolaurencelle

    Repeat Client

    CA

    Canada

    5

    Very fast service and exactly what I needed help with. Thanks so much!

    Worksample image
    Helpful?
    Yes
    No
  • G

    ganderas

    Repeat Client

    GR

    Greece

    5

    Excellent job! Delivery was very fast and the communication was perfect! Nothing more to ask for. Will use the services again in the future for sure! A+++

    Helpful?
    Yes
    No

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