You will get AI integrated into existing app (chats, content gen, document analysis)
Project details
I integrate AI into production applications. Not prototypes — real features that handle real users at scale.
What I build:
• Conversational AI (chatbots with memory, context, and personality)
• Content generation pipelines (blog posts, product descriptions, marketing copy)
• Document processing (PDF upload → structured data extraction)
• AI-powered search (semantic search using embeddings + vector DB)
• Classification systems (auto-tag, auto-route, auto-categorize)
• Multi-model architectures (Claude for quality, GPT for speed, local for privacy)
My stack: Next.js + TypeScript + Supabase (pgvector) + Vercel AI SDK + Claude/OpenAI APIs
I focus on:
• Streaming responses for snappy UX
• Proper error handling and rate limiting
• Cost optimization (right model for each task)
• Clean, maintainable code
6+ years of engineering experience. Currently building AI-powered products daily with Claude Code.
What I build:
• Conversational AI (chatbots with memory, context, and personality)
• Content generation pipelines (blog posts, product descriptions, marketing copy)
• Document processing (PDF upload → structured data extraction)
• AI-powered search (semantic search using embeddings + vector DB)
• Classification systems (auto-tag, auto-route, auto-categorize)
• Multi-model architectures (Claude for quality, GPT for speed, local for privacy)
My stack: Next.js + TypeScript + Supabase (pgvector) + Vercel AI SDK + Claude/OpenAI APIs
I focus on:
• Streaming responses for snappy UX
• Proper error handling and rate limiting
• Cost optimization (right model for each task)
• Clean, maintainable code
6+ years of engineering experience. Currently building AI-powered products daily with Claude Code.
AI Development Type
Knowledge Representation, Software MaintenanceAI Development Language
PythonWhat's included
| Service Tiers |
Starter
$300
|
Standard
$800
|
Advanced
$2,000
|
|---|---|---|---|
| Delivery Time | 4 days | 7 days | 14 days |
Number of Revisions | 2 | 3 | 5 |
AI Model Integration | |||
Detailed Code Comments | - | ||
Knowledge Graph | - | - | |
Model Documentation | - | ||
Ontology | - | - | - |
Source Code | |||
Taxonomy | - | - | - |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$75 - $200
Additional Revision
+$50
Additional AI Feature
(+ 2 Days)
+$200
RAG / Vector Search
(+ 3 Days)
+$300
Admin Dashboard
(+ 2 Days)
+$250Frequently asked questions
About Juan Manuel
Senior Full-Stack Engineer | Next.js, NestJS, AI/RAG Systems | 6+ Yrs
Jamundi, Colombia - 5:11 pm local time
Previously: backend engineer on a fintech platform processing $200M+ in transactions for 400+ businesses. Led backend development on BMW's multi-tenant car configurator connected to an Unreal Engine render farm. Senior full-stack on J&J MedTech's digital surgery platform for real-time surgical video. Built Bridgestone's subscription management backend serving 2,000+ subscribers.
What I do best:
- Full-stack apps with Next.js + NestJS + PostgreSQL
- AI integration: OpenAI, Claude, RAG systems, vector databases, n8n automations
- Backend architecture: microservices, event-driven systems, AWS (Lambda, SQS, API Gateway, CDK)
- Turning POCs into production tools (took one from prototype to 9,000+ users)
Stack: TypeScript, Go, Rust, Python, React, Next.js, NestJS, PostgreSQL, Redis, Prisma, AWS, Azure, Docker
Available to start immediately. Based in Colombia (EST-adjacent timezone).
Steps for completing your project
After purchasing the project, send requirements so Juan Manuel can start the project.
Delivery time starts when Juan Manuel receives requirements from you.
Juan Manuel works on your project following the steps below.
Revisions may occur after the delivery date.
Codebase Review & AI Architecture
I review your existing code, understand your data flow, and design the AI integration architecture. We align on approach.
Build AI Feature + API Integration
I build the AI feature — API connections, prompt engineering, streaming UI, error handling. You get a working preview.