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You will get Open AI Integration | GPT-3.5 | ReactJS from expert react developer

Sergii D.Status: Offline
Sergii D. Sergii D.
5.0
Top Rated
Preview image

Let a pro handle the details

Buy Chatbots services from Sergii, priced and ready to go.
Sergii D.Status: Offline
Sergii D. Sergii D.
5.0
Top Rated
Preview image

Let a pro handle the details

Buy Chatbots services from Sergii, priced and ready to go.

Project details

As a professional web developer with vast expertise in integrating OpenAI or ChatGPT into web applications, I can assist you in developing an exceptional user experience by seamlessly integrating cutting-edge natural language processing and AI technologies into your web application.

The integration could encompass a wide range of features, including but not limited to:

⦿ AI Recipe Generator
⦿ Chatbot using CHATGPT
⦿ Email Generator
⦿ AI Article Writer / AI Blog Writer
⦿ Image Generation using dalle
⦿ Resume Writer
⦿ Cover Letter Writer
⦿ AI Fitness Generator
⦿ Meal Planner

I specialize in creating complete web applications using various technologies, including:
✔️ Front-End
 • ReactJS
 • GatsbyJS
 • NextJS
 • TypeScript

✔️ Back-End
 • NodeJS
 • Express
 • NestJS

✔️ CMS
 • Sanity
 • Prismic
 • Strapi
 • Wordpress
 • Shopify

I also can help as front end developer , front end developer react , front end designer , shopify front end developer , front end web developer
Chatbot Type
Customer Service Chatbot, Moderation Chatbot, Social Media Chatbot
Development Technology
ChatGPT, GPT-3, Node.js
Messaging Platform
Email, Slack, Website

What's included $50

These options are included with the project scope.

$50
  • Delivery Time 5 days
  • Number of Revisions 2
    • Action Plan
    • API Integration
    • Bug Fixes
5.0
25 reviews
96% Complete
(24)
4% Complete
(1)
1% Complete
(0)
1% Complete
(0)
1% Complete
(0)

YM

Yuriy M.
5.00
Apr 2, 2026
Front End Developer | React Developer Needed

YM

Yuriy M.
5.00
Mar 30, 2026
Front End Developer | React Developer Needed for Dashboard Tweaks Very satisfied working with Sergii and Halo Lab, work has been done quickly with corresponding quality

YM

Yuriy M.
5.00
Mar 3, 2026
React Frontend Developer for Crypto Dashboard Tweaks Working with Sergii and Halo Lab was outstanding. Highly recommended for any type of work

LL

Lucie L.
4.40
Feb 25, 2025
Website development

KR

Kelson R.
5.00
Nov 20, 2024
QA Testing for the Application We were very impressed at the diligent QA! We have a React Native / Expo mobile application. Sergii worked closely with the developer to coordinate successful releases, type up detailed QA plan, and find edge case bugs. We saw a noticeable improvement in the stability of our mobile app once we began working with him. Highly recommend!
Sergii D.Status: Offline

About Sergii

Sergii D.Status: Offline
Front end web developer Front end developer React | Shopify Webflow
100% Job Success
5.0  (25 reviews)
Odessa, Ukraine - 9:29 am local time
⭐️⭐️⭐️⭐️⭐️ Top 1% Expert-Vetted Web Developer on Upwork

📍 No short-term projects
📞 Kick-off with the team is mandatory
🧨 Available for a quick project start

★ Top-100 Service Provider by Clutch
★ $500M+ Raised by clients
★ 99+ International Awards
★ 15+ years of expertise (NOKIA, OPERA, OPPO, UDEMY, AUTH0, etc.)

👋 Hi, I'm Sergii!

I'm a senior web developer, full stack developer Next.js specialist, and front end developer with 10+ years of experience building SaaS platforms, eCommerce products, AI applications, and custom web solutions.

Over the years, I've helped launch 100+ products using React, React NextJS, Next.js, and modern JavaScript frameworks. My work combines technical architecture, front-end engineering, and product thinking to create fast, scalable applications that deliver measurable business results.

🏆 Why Clients Work With Me

✔ 100+ React, React Next, and Next.js projects delivered
✔ 50+ fully launched products across SaaS, AI, fintech, and eCommerce
✔ $500M+ raised by companies I've supported
✔ 20+ Upwork clients and long-term partnerships
✔ 30+ Shopify and Shopify Webflow projects completed
✔ Mobile and web products used by thousands of daily users
✔ Extensive experience as a front end developer React and front end Next specialist

🚀 Core Expertise

📌 Front-End Development

As a front end developer, front end web developer, and front end designer, I've built interfaces for startups, enterprise products, and high-growth SaaS companies.

Using React, React NextJS, Next.js, TypeScript, Tailwind, and modern UI frameworks, I create scalable applications focused on performance, maintainability, and user experience.

My front-end work has helped companies reduce load times, improve conversion rates, and accelerate product delivery through reusable component systems and scalable architecture.

📌 React & Next.js Development

I've delivered 100+ projects using React, React Next, and Next.js, including SaaS platforms, dashboards, marketplaces, AI tools, and enterprise applications.

As a front end developer React specialist and full stack developer Next expert, I focus on building high-performance applications with clean architecture, SSR, SEO optimization, and long-term scalability.

📌 Mobile App Development

Beyond web applications, I have extensive experience in mobile app development using React Native.

I've helped teams launch mobile apps for healthcare, fintech, logistics, education, and SaaS businesses. As a mobile app developer, I work across the entire product lifecycle—from mobile app design and architecture to deployment and optimization.

My experience includes React Native Mobile applications, cross-platform development, and React Native Full Stack solutions connected to modern APIs and cloud infrastructure.

📌 Shopify & Webflow Solutions

I've worked on 30+ Shopify and Shopify Webflow projects, helping brands improve storefront performance, customer experience, and conversion rates.

As a Shopify front end developer, I build custom themes, Shopify Hydrogen storefronts, and modern eCommerce experiences using Liquid, React, and headless architectures.

I also collaborate closely with Webflow teams, helping businesses bridge design and development through scalable Webflow implementations and front-end optimization.

📌 AI & Python Integrations

As a front end developer Python specialist, I've worked on AI-powered products featuring OpenAI integrations, vector search, chat interfaces, workflow automation, and custom dashboards.

My experience includes Python APIs, automation workflows, AI assistants, and modern SaaS products powered by LLM technologies.

💻 Technology Stack

React • React Next • React NextJS • Next.js • React Native • React Native Mobile • React Native Full Stack

TypeScript • JavaScript • Node.js • NestJS • Express • Fastify

Shopify • Shopify Webflow • Webflow • WordPress

MongoDB • PostgreSQL • MySQL

AWS • Google Cloud • Azure

Tailwind • Storybook • GraphQL • Redux

🔥 What Clients Hire Me For

✔ Front End Developer React projects
✔ Full Stack Developer Next.js applications
✔ React Native Mobile App Development
✔ Shopify Front End Developer services
✔ Webflow and Shopify Webflow implementations
✔ Front End Designer and UI implementation
✔ Front End Developer Python integrations
✔ SaaS platforms and enterprise applications
✔ Mobile App Design and development
✔ Custom Web Development solutions

💎 Why Work With Me

I combine the expertise of a web developer, front end developer, mobile app developer, and full stack developer into one delivery process.

Clients work with me because I don't just build features—I help create products that scale, perform, and generate business value.

Whether you need a front end developer React specialist, Shopify front end developer, React Native full stack engineer, mobile app developer, Webflow expert, or full stack developer Next.js partner, I'd be happy to discuss your project.

Steps for completing your project

After purchasing the project, send requirements so Sergii can start the project.

Delivery time starts when Sergii receives requirements from you.

Sergii works on your project following the steps below.

Revisions may occur after the delivery date.

Researching requirements

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