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You will get Full stack developer | Integrate AI Features into Your Web App

Andrey Y.Status: Offline
Andrey Y. Andrey Y.
5.0
Top Rated
Preview image

Let a pro handle the details

Buy Web Application Programming services from Andrey, priced and ready to go.
Andrey Y.Status: Offline
Andrey Y. Andrey Y.
5.0
Top Rated
Preview image

Let a pro handle the details

Buy Web Application Programming services from Andrey, priced and ready to go.

Project details

Add smart AI-powered functionality to your existing web application fast and reliably. I’ll integrate OpenAI (GPT-4o, GPT-4o-mini, Assistants, etc.) or other AI APIs to create features like content generation, chatbots, summarization, smart search, or automation.
Perfect for making your product stand out without building AI from scratch. Full stack developer
Programming Languages
HTML & CSS, JavaScript, Python
Coding Expertise
Cross Browser & Device Compatibility, Performance Optimization, Security

What's included $100

These options are included with the project scope.

$100
  • Delivery Time 7 days
  • Number of Revisions 1
5.0
9 reviews
100% Complete
(9)
1% Complete
(0)
1% Complete
(0)
1% Complete
(0)
1% Complete
(0)

GA

Gaia A.
5.00
Mar 31, 2026
Prompt Engineer / AI Developer Andrey and his team enhanced our AI and LLM workflows through improved prompt engineering. They collaborated with our internal developers to refine prompts and boost the consistency of model responses.
Andrey communicated clearly, paid close attention to details, and maintained a solution-focused approach. The team demonstrated professionalism, a commitment to quality, and responsibility for results. Overall, it was a positive collaboration.

GA

Gaia A.
5.00
Jan 31, 2026
Lead React Native Developer (Expo) – AI-Powered Women’s Health App (Part-Time, Remote EU) Great experience working together.
The developer took ownership of the React Native (Expo) front-end and delivered steady, high-quality progress across the mobile app and admin web.

Communication was clear and pragmatic, especially when translating Figma designs into a consistent design system using Nativewind. They were comfortable working in an existing Supabase + OpenAI setup and collaborating with backend and design without friction.

Overall, a reliable senior-level developer who can work inside a live AI-powered product and move it forward without drama. Would happily work together again.

IW

Itamar W.
5.00
Sep 15, 2025
Full stack engineer Andrey is great to work with- communicative and always willing to work through any bumps in the road. Highly recommend!

IW

Itamar W.
5.00
Aug 1, 2025
Senior Full Stack Engineer Andrey and team are great- reliable, communicative and delivered on time! Very happy with their work!

PZ

Pavlo Z.
5.00
Mar 26, 2025
Full Stack Developer (.NET + Angular) Needed for Role-Based Access Control (RBAC) Andrii is a great professional, highly recommend him
Andrey Y.Status: Offline

About Andrey

Andrey Y.Status: Offline
Full stack developer | React developer | Node.js developer | BM
100% Job Success
5.0  (9 reviews)
Lviv, Ukraine - 12:30 am local time
I'm a seasoned Full stack developer and business manager with over 8 years of experience building scalable applications. I specialize in high-performance systems using React and Node.js, having delivered 15+ production projects across various industries. My versatility allows me to excel as a Full stack developer whether the project requires Angular for complex dashboards or Wordpress for rapid landing page deployments. I bridge the gap between business goals and technical execution by mastering the core of the web: Javascript, HTML, and CSS.

🏆 PROVEN EXPERIENCE IN REAL PRODUCTS

✅ Developed 5+ high-traffic applications with React and Node.js serving millions of users. I optimized HTML structures and CSS styles to achieve 95–98% Core Web Vitals and cut load times by 80%.

✅ Built real-time logistics systems where Node.js backends meet Javascript frontends with 99% uptime. As a Full stack developer, I’ve successfully migrated legacy Angular platforms and managed global Wordpress sites.

✅ Created 10+ complex dashboards using Angular and React, often integrating Python scripts for advanced data processing. My deep knowledge of Javascript, HTML, and CSS ensures secure role-based access and seamless live updates.

📊 IMPACT I DELIVER AS A FULL STACK DEVELOPER

50–80% faster development cycles by working as a Full stack developer who synchronizes React and Node.js components perfectly.

60–90% performance gains through efficient Javascript execution and optimized CSS rendering in both Angular and custom apps.

40% fewer bugs by using Python for automated testing and maintaining clean HTML architecture in Wordpress environments.

Successful launches of 12+ applications where Python handles heavy backend data while Node.js powers the real-time API.

High scalability for 100k+ daily users, ensuring stability whether the frontend is built on React or Angular.

💡 WHY CLIENTS CHOOSE ME

Deep Technical Expertise: I am a Full stack developer who can pivot from a Python microservice to a Javascript UI in minutes.

Versatile Tech Stack: I maintain elite standards in Node.js environments while delivering pixel-perfect Wordpress solutions when speed is the priority.

Core Standards: I treat HTML and CSS as first-class citizens, ensuring accessibility in every Wordpress, Angular, or React project.

Proactive Growth: I use Python for automation to give my clients a competitive edge, ensuring their Javascript codebases remain clean and maintainable.

🛠 TECH STACK

Frontend: React 18, Next.js 14, Angular, Javascript (ES6+), HTML 5, CSS 3 (Tailwind/SCSS)

Backend: Node.js (NestJS/Express), Python (FastAPI/Django), PostgreSQL, MongoDB

Deployment: Docker, AWS, Vercel, Wordpress hosting

📩 If you need a Full stack developer to scale your React frontend, harden your Node.js backend, or optimize the HTML and CSS of your Angular, Python, or Wordpress project—let’s connect!

Steps for completing your project

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

Delivery time starts when Andrey receives requirements from you.

Andrey works on your project following the steps below.

Revisions may occur after the delivery date.

Fully working AI feature integrated into your frontend and backend

Secure API key handling

Review the work, release payment, and leave feedback to Andrey.