I will maintain, update, and add features to your react and node js web app

D
denislav05
D
denislav05
Denislav
maintain, update, and add features to your react and node js web app
Full Screen
maintain, update, and add features to your react and node js web app

About this gig

Are you looking for an expert to maintain, fix, or upgrade your existing custom web application?

If your React or Node.js website is throwing errors, running slow, has outdated packages, or you simply need to add new features, you are in the right place!

As a professional Full Stack Developer specializing in the MERN stack, I help business owners and founders keep their web applications secure, fast, and up-to-date. Whether you need a quick bug fix or long-term technical support, I've got you covered.

️ What I can do for your website:

  • Bug Fixing: Identifying and resolving frontend (UI/UX) and backend errors.
  • Version Updates: Updating deprecated npm packages, React/Node versions, and fixing security vulnerabilities.
  • Feature Additions: Building new components, pages, or entire modules for your existing app.
  • Database Management: Optimizing and managing MongoDB database.
  • API Integrations: Connecting third-party APIs (including OpenAI / ChatGPT integration for smart AI features).
  • Performance Optimization: Improving load times, code refactoring, and making sure the site is 100% mobile responsive.

Important: Every web application is unique. Please message me before placing an order!

  • Platform

    • Custom

  • Website type

    • E-Commerce store
    • Business
    • Landing page
    • Entertainment
    • Dropshipping

  • Programming language

    • JavaScript
    • TypeScript
    • HTML & CSS
    • React
    • Other
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 Denislav

Denislav

Web Applications with AI and Machine Learning

  • FromBulgaria
  • Member sinceApr 2023
  • Avg. response time1 hour

  • Languages

    Bulgarian, English
Hi! I'm a Full-Stack Developer ready to bring your ideas to life. With 4 years of experience as a Full-Stack Engineer with expertise in the MERN (MongoDB, Express.js, React, and Node.js) stack and Machine Learning, I help businesses launch custom web solutions. Here is what I bring to your project: ✔️ Fast & responsive React.js Frontends ✔️ Secure Node.js/Express Backends ✔️ Custom AI & OpenAI Integrations ✔️ Seamless deployments (Vercel/Render) I focus on writing clean code, delivering on time, and providing excellent communication. Send me a message to discuss your next project!

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