I will fix bugs and develop react, nextjs, and mern stack applications

N
numan_dev21
N
numan_dev21
Numan

Level 1

5.0
5.0
fix bugs and develop react, nextjs, and mern stack applications
fix bugs and develop react, nextjs, and mern stack applications
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fix bugs and develop react, nextjs, and mern stack applicationsfix bugs and develop react, nextjs, and mern stack applicationsfix bugs and develop react, nextjs, and mern stack applicationsfix bugs and develop react, nextjs, and mern stack applicationsfix bugs and develop react, nextjs, and mern stack applicationsfix bugs and develop react, nextjs, and mern stack applications

About this gig

STRUGGLING WITH MERN STACK BUGS OR NEED NEW NEXT.JS FEATURES?


Broken backend logic, React state synchronization issues, and messy Node.js APIs can stall your project. You need a senior full-stack developer who can quickly isolate errors, refactor legacy code, and build robust features.

As a senior MERN stack and Next.js engineer, I specialize in end-to-end web application development, advanced bug fixing, and clean architecture. I write scalable, type-safe code that ensures your platform runs seamlessly.


WHAT I CAN DO FOR YOU:

  • Debug and fix React, Next.js, and Node.js backend errors
  • Build custom full-stack features and reusable UI components
  • Develop and integrate RESTful APIs and database schemas (MongoDB)
  • State management optimization and performance refactoring
  • Secure authentication flows (JWT, OAuth) and middleware setup


WHY CHOOSE ME:

  • Proven Expertise: Enterprise-grade engineering backed by stellar ratings
  • 100% Satisfaction: Rigorous testing until your code is flawless
  • Production-Grade Standards: Clean, scalable, and modular architecture


Have a custom requirement? Click "Contact Me" before ordering!

  • Programming language

    • JavaScript

  • Expertise

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

  • Frontend framework

    • Bootstrap
    • Next.js
    • React.js
    • Tailwind CSS
    • Tkinter

  • Backend framework

    • Django
    • Express.js
    • Flask
    • Next.js
    • Node.js

  • AI & low/no code builders

    • Lovable
    • Bolt.new
    • Claude
    • Firebase Studio
    • Base44
    • Co.dev
    • Cursor
    • Softgen
    • Replit
    • Bubble
    • FlutterFlow
    • Adalo
    • OutSystems
    • Mendix
    • Webflow
    • Retool
    • Glide
    • Thunkable
    • AppGyver
    • Zoho Creator
    • Clutch.io
    • Wappler
    • Stacker
    • Softr
    • Ninox
    • Betty Blocks
    • V.One
    • UI Bakery
    • Backendless

Get to know Numan

Numan

Software Engineer

4.9(11)

Level 1

  • FromPakistan
  • Member sinceMay 2025
  • Avg. response time1 hour
  • Last delivery2 days

  • Languages

    Urdu, English, Punjabi, Hindi, French, Russian, German, Spanish
I am a Meta Certified Full-Stack Web Developer & Software Engineer specializing in HTML, CSS, JavaScript, React, Next.js, and the MERN stack. I also work with Python, AI SaaS projects, custom AI agents, and n8n automation workflows to streamline tasks and optimize business processes. As a Vibe Coder, I create fast, responsive, and scalable websites and applications with seamless deployment on Netlify & Vercel. I deliver high-quality, professional solutions with clear communication and timely delivery to bring your ideas to life.

My Portfolio

Reviews

5 reviews for this Gig
5.0

(5)
(0)
(0)
(0)
(0)
Rating Breakdown
  • Seller communication level
    5
  • Quality of delivery
    5
  • Value of delivery
    5
Sort By
Most relevant
  • Y
    image-docs

    yosefsasftlas

    US

    United States

    5

    He is a very talented designer although it wasn’t finished yet I trust that he will finish it and make sure it’s perfect he is very fast at coding and understands the project and does what ever is necessary to get the job done thank you and I look forward to working with numan in the future and to make sure my project is completed.

    $200-$400

    Price

    3 months

    Duration

    Helpful?
    Yes
    No
  • Y
    image-docs

    yosefsasftlas

    US

    United States

    5

    Numan is a very talented coder front and backend super attention to detail great knowledge on how to code deep understanding when it comes to coding he is a pleasure to work with super fast and super patient anything that needs done he does instantly without hesitation I really appreciate working with...

    $100-$200

    Price

    6 weeks

    Duration

    Helpful?
    Yes
    No
  • Y
    image-docs

    yosefsasftlas

    US

    United States

    5

    Numan is very talented coder he does a great job working on coding anything you need I really appreciate him being patient and understanding the project at hand and working very hard to complete it until it’s 100% perfect. I look forward to working with you in the future and finish my project thank you.

    $100-$200

    Price

    8 weeks

    Duration

    Helpful?
    Yes
    No
  • U

    user31590126

    CA

    Canada

    5

    Numan is exceptionally knowledgeable and patient. I would not hesitate to hire him again.

    $50-$100

    Price

    1 day

    Duration

    Helpful?
    Yes
    No
  • Y
    image-docs

    yosefsasftlas

    US

    United States

    5

    Numan is a very good coder he understands what you want done and can execute very quickly is patient and attentive to detail if anything is wrong he will fix it without hesitation he is super driven and motivated which is very helpful when working with him I enjoy working with him and look forward to...

    $100-$200

    Price

    3 weeks

    Duration

    Helpful?
    Yes
    No
Reviews

5 reviews for this Gig
5.0

(5)
(0)
(0)
(0)
(0)
Rating Breakdown
  • Seller communication level
    5
  • Quality of delivery
    5
  • Value of delivery
    5
Sort By
Most relevant
  • Y
    image-docs

    yosefsasftlas

    US

    United States

    5

    He is a very talented designer although it wasn’t finished yet I trust that he will finish it and make sure it’s perfect he is very fast at coding and understands the project and does what ever is necessary to get the job done thank you and I look forward to working with numan in the future and to make sure my project is completed.

    $200-$400

    Price

    3 months

    Duration

    Helpful?
    Yes
    No
  • Y
    image-docs

    yosefsasftlas

    US

    United States

    5

    Numan is a very talented coder front and backend super attention to detail great knowledge on how to code deep understanding when it comes to coding he is a pleasure to work with super fast and super patient anything that needs done he does instantly without hesitation I really appreciate working with...

    $100-$200

    Price

    6 weeks

    Duration

    Helpful?
    Yes
    No
  • Y
    image-docs

    yosefsasftlas

    US

    United States

    5

    Numan is very talented coder he does a great job working on coding anything you need I really appreciate him being patient and understanding the project at hand and working very hard to complete it until it’s 100% perfect. I look forward to working with you in the future and finish my project thank you.

    $100-$200

    Price

    8 weeks

    Duration

    Helpful?
    Yes
    No
  • U

    user31590126

    CA

    Canada

    5

    Numan is exceptionally knowledgeable and patient. I would not hesitate to hire him again.

    $50-$100

    Price

    1 day

    Duration

    Helpful?
    Yes
    No
  • Y
    image-docs

    yosefsasftlas

    US

    United States

    5

    Numan is a very good coder he understands what you want done and can execute very quickly is patient and attentive to detail if anything is wrong he will fix it without hesitation he is super driven and motivated which is very helpful when working with him I enjoy working with him and look forward to...

    $100-$200

    Price

    3 weeks

    Duration

    Helpful?
    Yes
    No

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