You will get AI Integration for Your App - OpenAI, Anthropic, RAG Systems

Vitaliy L.Status: Offline
Vitaliy L. Vitaliy L.
5.0
Top Rated

Let a pro handle the details

Buy Generative AI services from Vitaliy, priced and ready to go.
Vitaliy L.Status: Offline
Vitaliy L. Vitaliy L.
5.0
Top Rated

Let a pro handle the details

Buy Generative AI services from Vitaliy, priced and ready to go.

Project details

I've integrated LLM APIs (OpenAI, Anthropic Claude) into production products serving 800K+ users (Dende AI), across EdTech and Analytics platforms. I write prompts that return reliable structured outputs, handle streaming responses for fast UX, build RAG pipelines and vector retrieval, and design backend AI workflows that hold up under real traffic - rate limits, retries, token costs. I don't just call the API: I design the full flow from input → prompt → structured output → UI.
AI Algorithms
Large Language Model, Transformer Model
AI Applications
AI Chatbot, AI Content Creation, Conversational AI, Natural Language Generation, Natural Language Understanding
AI Development Language
Python
AI Tools
Azure OpenAI, Hugging Face
AI Models
ChatGPT, GPT-4, LaMDA
What's included
Service Tiers Starter
$2,499
Standard
$4,999
Advanced
$9,999
Delivery Time 14 days 21 days 42 days
Number of Revisions
235
AI Model Integration
Batch Normalization
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Database Integration
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Detailed Code Comments
Image Upscaling
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MLOps
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Model Deployment
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Model Documentation
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Model Monitoring
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Model Testing & Optimization
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Model Tuning
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Natural Language Processing
NLP Tokenization
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Pre-Training
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Prompt Engineering
Setup File
Source Code
5.0
11 reviews
100% Complete
1% Complete
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ID

Ivans D.
5.00
Aug 3, 2026
Full-stack developer needed for booking & payments MVP (Next.js, Stripe) Nailed the brief. Booking + Stripe payments work great, dashboard is clean, mobile looks good. Easy to work with. Thanks, Vitaliy!

NN

Natallia N.
5.00
Jul 24, 2026
Full Stack Developer for Quick Feature Build - Property Management SaaS (Existing App) Vitalii did excellent work adding the tenant dashboard, rent tracking, and Stripe/SendGrid integrations to our SaaS platform. Clean code, fit right into our stack, respected our auth/RBAC setup, and delivered on time. Communicative and easy to work with, highly recommend!

CS

Cristian S.
5.00
Mar 7, 2025
Part-time React.js developer (No agencies)

VG

Vicente G.
5.00
May 24, 2024
Page Transition with GSAP for NextJS website Great coding work with our detailed Artboards and Direction. From CSS to Javascript, in particular GSAP, we created some magic!

DC

Denys C.
5.00
Nov 22, 2023
Frontend: React + NextJS
Vitaliy L.Status: Offline

About Vitaliy

Vitaliy L.Status: Offline
Full Stack Developer AI | SaaS Developer, MVP | React, Python
100% Job Success
5.0  (11 reviews)
Lviv, Ukraine - 9:18 pm local time
📩 𝐒𝐞𝐧𝐝 𝐦𝐞 𝐲𝐨𝐮𝐫 𝐜𝐨𝐝𝐞𝐛𝐚𝐬𝐞 𝐨𝐫 𝐢𝐝𝐞𝐚 - 𝐈'𝐥𝐥 𝐝𝐞𝐥𝐢𝐯𝐞𝐫 𝐚 𝐟𝐫𝐞𝐞 𝐭𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐜𝐨𝐧𝐬𝐮𝐥𝐭𝐚𝐭𝐢𝐨𝐧 & 𝐜𝐨𝐝𝐞 𝐚𝐮𝐝𝐢𝐭
(Available today - 21.08)

I help businesses build scalable SaaS platforms & MVPs, AI-powered features, and modern web products using Javascript - React.js/Node.js/Next.js, TypeScript, Python, and cloud technologies - 𝟑𝐱 𝐟𝐚𝐬𝐭𝐞𝐫 𝐫𝐞𝐩𝐨𝐫𝐭𝐢𝐧𝐠, 𝟐𝟎-𝟐𝟓% 𝐥𝐨𝐰𝐞𝐫 𝐨𝐩𝐞𝐫𝐚𝐭𝐢𝐨𝐧𝐚𝐥 𝐜𝐨𝐬𝐭𝐬, 𝟐-𝟑𝐱 𝐟𝐚𝐬𝐭𝐞𝐫 𝐝𝐚𝐬𝐡𝐛𝐨𝐚𝐫𝐝𝐬, 𝐚𝐧𝐝 𝐩𝐥𝐚𝐭𝐟𝐨𝐫𝐦𝐬 𝐬𝐜𝐚𝐥𝐞𝐝 𝐭𝐨 𝟖𝟎𝟎𝐊+ 𝐮𝐬𝐞𝐫𝐬.

𝐓𝐞𝐜𝐡 𝐒𝐭𝐚𝐜𝐤:
Full-Stack Development • JavaScript • TypeScript • React • Next.js • Node.js • Python • Web Application • API • API Integration • Software Development • Software Architecture & Design • PostgreSQL • Firebase • Stripe • OpenAI API • SaaS • • HTML • HTML5 • CSS • CSS3 • Tailwind CSS • Bootstrap

𝐑𝐞𝐜𝐞𝐧𝐭 𝐰𝐨𝐫𝐤𝐬:
B2B analytics/demand forecasting SaaS - cut reporting time up to 3x, reduced operational costs 20-25%
B2B visitor-tracking & CRM platform - cut dashboard load time 2-3x, automated lead handoff via HubSpot/ERP integration
LegalTech platform (web + mobile + real-time chat) - booking time cut from days to minutes, 30-40% lower dev cost vs. full rebuild
AI-powered learning platform (800K+ users) - study calendar, quiz engine, and personalized study sessions

𝐈𝐧𝐝𝐮𝐬𝐭𝐫𝐢𝐞𝐬 𝐈'𝐯𝐞 𝐰𝐨𝐫𝐤𝐞𝐝 𝐰𝐢𝐭𝐡:
✔️ SaaS & B2B Platforms
✔️ Legal Tech
✔️ E-commerce
✔️ EdTech
✔️ Consumer Mobile Apps
✔️ MVP

𝐖𝐡𝐲 𝐜𝐥𝐢𝐞𝐧𝐭𝐬 𝐜𝐡𝐨𝐨𝐬𝐞 𝐦𝐞:
✅ 10+ years of building SaaS platforms & MVP
✅ 94% of projects delivered on time and within scope
✅ 15-30 minute response time for critical tasks
✅ Proactive communication, clear technical ownership
✅ Comfortable working inside existing/legacy codebases, not just greenfield builds
✅ Worked with 9+ clients across the USA, Australia, and Europe

Ready to build something that actually works? Send me your project details, and let's turn it into results.

Steps for completing your project

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

Delivery time starts when Vitaliy receives requirements from you.

Vitaliy works on your project following the steps below.

Revisions may occur after the delivery date.

AI Feature Design & Prompt Architecture

Define prompt structure, structured output schemas, context management, and token budgets - plus edge-case and hallucination handling.

LLM API Integration & Backend Pipeline

Build the OpenAI/Anthropic API connection, serverless functions or workers, structured output parsing and validation, plus rate-limit handling, retries, and error fallbacks.

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