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$
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I will build custom ai apps using rag llms langchain, and langgraph
Alex A
Level 1
5.0
5.0
About this gig
As a Senior AI Engineer, I specialize in building intelligent apps using RAG (Retrieval-Augmented Generation), custom LLM pipelines, LangChain, LangGraph, and cutting-edge AI tooling.
Whether you need a chatbot, agent system, or full-stack AI-powered web app, Ill design robust, scalable solutions that connect to your data and deliver real results.
- Custom RAG pipelines
- LangChain/LangGraph orchestration
- LLM app integrations (OpenAI, Claude, etc.)
- Replit-based prototypes or full MVPs
Lets build the next-gen AI tool youve imagined!
Get to know Alex A
Alex A
Senior AI, BlockChain, Game Engineer and MVP Builder and Replit
Level 1
- FromVenezuela
- Member sinceJun 2025
- Avg. response time3 hours
- Last delivery5 months
Languages
English, Spanish, German
I’m a Senior AI & BlockChain Game Engineer and Replit Agent Pro with deep experience in RAG, LLMs, LangChain, LangGraph, and cutting-edge AI bot development. My expertise covers the entire blockchain stack — from smart contracts to full dApp ecosystems. I specialize in building smart, scalable MVPs using Replit, Lovable, Bolt, and Cursor. Whether you need an intelligent assistant, a fast prototype, or a fully functional AI system, I bring the tools and talent to deliver results. Let’s turn your idea into a working product you’ll love!
My Portfolio
FAQ
Can you integrate my API or private dataset?
Yes! I can connect to vector DBs, APIs, or custom sources using LangChain.
Do you support Claude or Gemini models?
Absolutely. I support most major LLM providers (OpenAI, Anthropic, Google, Mistral, etc.)
Reviews
6 reviews for this Gig
| (6) | ||
| (0) | ||
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Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
V vasylzyma2
Ukraine
Alex is really Top-rated developer on Fiverr. Great Communication. He is Elite of AI field.
Up to $50
Price
1 day
Duration
Helpful?C chrismehan
Canada
Alex is a pleasure to work with! Great work! Thank you.
$100-$200
Price
1 day
Duration
Helpful?P pedrobarrene326
Repeat Client
Spain
ALEX, ES UN "EXPERTO EN PROGRAMACION QUE TRABAJA AL SIGUIENTE NIVEL.100%RECOMENDABLE.
$200-$400
Price
1 day
Duration
Helpful?P pedrobarrene326
Repeat Client
Spain
Si,si.....muy buentrabajajo y de alta calidad y compejidad en prohramacion e IA. Gracias.
$600-$800
Price
1 day
Duration
Helpful?P pedrobarrene326
Repeat Client
Spain
Alex es uno de los mejores freelancers con los que trabajado. No dudes en consultar su disponibilidad. Gracias.
$400-$600
Price
2 days
Duration
Helpful?
Reviews
6 reviews for this Gig
| (6) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
V vasylzyma2
Ukraine
Alex is really Top-rated developer on Fiverr. Great Communication. He is Elite of AI field.
Up to $50
Price
1 day
Duration
Helpful?C chrismehan
Canada
Alex is a pleasure to work with! Great work! Thank you.
$100-$200
Price
1 day
Duration
Helpful?P pedrobarrene326
Repeat Client
Spain
ALEX, ES UN "EXPERTO EN PROGRAMACION QUE TRABAJA AL SIGUIENTE NIVEL.100%RECOMENDABLE.
$200-$400
Price
1 day
Duration
Helpful?P pedrobarrene326
Repeat Client
Spain
Si,si.....muy buentrabajajo y de alta calidad y compejidad en prohramacion e IA. Gracias.
$600-$800
Price
1 day
Duration
Helpful?P pedrobarrene326
Repeat Client
Spain
Alex es uno de los mejores freelancers con los que trabajado. No dudes en consultar su disponibilidad. Gracias.
$400-$600
Price
2 days
Duration
Helpful?
