You will get I will integrate OpenAI, Claude or Gemini into your existing web app
Top Rated

Project details
Many businesses already have a working app, SaaS platform, CRM, admin panel, or internal system - but struggle to add AI features that are actually usable in production.
I help existing app owners integrate OpenAI, Claude, or Gemini into their current system with a practical, production-ready approach.
I can help you build:
• AI Chat Features
• AI Email & Reply Generation
• AI Content Automation
• AI Smart Search / Knowledge Base
• AI Workflow Automation
• AI Translation & Summarization
• Dify AI Workflow Integration
• Internal AI Tools for Teams
• AI Assistants for SaaS or CRM platforms
I work with:
• React / Next.js
• Node.js
• Laravel / PHP
• Ruby on Rails
• Python / Django
• REST API / Webhooks
• Dify / LangChain
This project is ideal if:
• You already have an existing product
• You want to launch AI features quickly
• You need help choosing the right AI model
• You want production-ready implementation, not just prototypes
Please contact me before ordering so I can review your current system and recommend the best AI integration approach for your business.
I help existing app owners integrate OpenAI, Claude, or Gemini into their current system with a practical, production-ready approach.
I can help you build:
• AI Chat Features
• AI Email & Reply Generation
• AI Content Automation
• AI Smart Search / Knowledge Base
• AI Workflow Automation
• AI Translation & Summarization
• Dify AI Workflow Integration
• Internal AI Tools for Teams
• AI Assistants for SaaS or CRM platforms
I work with:
• React / Next.js
• Node.js
• Laravel / PHP
• Ruby on Rails
• Python / Django
• REST API / Webhooks
• Dify / LangChain
This project is ideal if:
• You already have an existing product
• You want to launch AI features quickly
• You need help choosing the right AI model
• You want production-ready implementation, not just prototypes
Please contact me before ordering so I can review your current system and recommend the best AI integration approach for your business.
Programming Languages
JavaScript, Python, Ruby/Ruby on RailsCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$300
|
Standard
$1,000
|
Advanced
$2,500
|
|---|---|---|---|
| Delivery Time | 1 day | 3 days | 7 days |
Number of Revisions | 0 | 1 | 2 |
Number of Pages | 0 | ||
Design Customization | - | - | |
Content Upload | - | ||
Responsive Design | - | - | |
Source Code |
Optional add-ons
You can add these on the next page.
Additional Revision
+$50
Additional Page
(+ 1 Day)
+$50Frequently asked questions
9 reviews
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BL
Benjamin L.
Jul 31, 2025
Design for Promo Banners for Website
Good Job.
BL
Benjamin L.
Jul 2, 2025
Design of Signboard and Exterior Stickers for Retail Store
Very good work and completed designs.
Understands requirements and is able to deliver on time and to specification.
Understands requirements and is able to deliver on time and to specification.
MS
Mercedes S.
Apr 15, 2025
Staging Environment on AWS
BL
Benjamin L.
Feb 13, 2025
Development of Website (As per discussion + brief)
multiple projects completed and to specifications.
BL
Benjamin L.
Nov 19, 2024
Relaunch of Website + Rubt Version Update
good vendor
About Nguyen
AI-powered Apps & Web | Flutter | NodeJS | Python
100%
Job Success
Hanoi, Vietnam - 11:52 am local time
Strong background in requirement analysis, business workflow understanding, system design, and end-to-end development, with a hands-on approach and the ability to launch projects smoothly from concept to production.
In recent years, I have also been actively working in AI-native development, using tools such as ChatGPT, Claude, Claude Code, Cursor, and AI agents to improve development speed, clarify specifications, automate business workflows, and build practical AI-powered systems. My strength is not only using AI tools, but also understanding business operations and deciding where AI, automation, or traditional system development should be applied to create real productivity gains.
✅ CORE EXPERTISE:
Ruby on Rails, Node.js, Python, React.js
Flutter, FlutterFlow, React Native
WordPress Custom Development
Kintone Customization / API Integration
AWS, Firebase, Supabase
OpenAI API, Claude, Dify, RAG, AI Agents
Business Automation, Workflow Optimization
Requirement Analysis, System Design, PM/BSE for Japanese clients
Steps for completing your project
After purchasing the project, send requirements so Nguyen can start the project.
Delivery time starts when Nguyen receives requirements from you.
Nguyen works on your project following the steps below.
Revisions may occur after the delivery date.
Requirement Review & System Analysis
Review your existing app, workflow, and AI integration goals.
AI Integration Strategy
Recommend the best AI model (OpenAI, Claude, Gemini) and define the implementation approach.