j
joaquin_schmidt

Joaquin S

@joaquin_schmidt

Backend Developer: AI Specialist with Django, Langchain and LangGraph

Argentina
Spanish, Portuguese
About me
Hi! I am Joaquin, a backend developer with experience in Python, Django and AI frameworks like Langchain and LangGraph. I specialize in building robust APIs, integrating intelligent agents and optimizing databases. My services include: ✅ API development with Django and Django Rest Framework ✅ AI integration with Langchain and LangGraph ✅ Chatbot and virtual assistant creation ✅ Database optimization with PostgreSQL ✅ Custom tool development in Python I follow agile methodologies to ensure efficient deliveries and clean code. If you need to enhance your project with AI or improve your backend... Read more

Skills

j
joaquin_schmidt
Joaquin S
Offline • 
Average response time: 2 hours

See my services

AI Websites & Software
I will create a custom ai CRM with automation workflows
From$250 / projectMore details

Work experience

NodeJS Developer

Tecnosoftware • Full-time

Aug 2025 - Present • 9 mos

I am actively involved in the refactor of a large monolithic application into a domain-oriented microservices architecture, ensuring each service owns its own data and operates within well-defined boundaries. This includes redefining data ownership, reducing coupling, and improving scalability, maintainability, and deployment flexibility. I develop backend services using Node.js and TypeScript, applying clean architecture principles and leveraging TypeORM for data modeling, migrations, and persistence management. I collaborate on the frontend using React and TypeScript to ensure seamless integration between distributed services and user-facing applications. Additionally, I work with RPA systems to automate complex client data migrations, streamlining high-volume billing rule configurations and reducing manual, error-prone processes through structured automation workflows. Services are containerized using Docker to ensure consistent environments across development, testing, and production.

FullStack developer

Helpia • Full-time

May 2024 - Mar 2025 • 10 mos

I build dynamic React interfaces with custom chat widgets, enabling seamless real-time interaction between users and AI assistants through robust backend APIs. I design secure multi-tenant architectures, allowing each client to manage their own AI assistants, configurations, and API keys independently. I implement Retrieval-Augmented Generation (RAG) systems to enhance assistant responses with contextual business knowledge, and develop scalable multi-agent orchestration using LangChain and LangGraph with modular prompt and tool architectures. I integrate AI assistants with WhatsApp, Instagram, Messenger, Telegram, and custom web widgets to enable true omnichannel communication. Additionally, I develop admin dashboards, session management systems, analytics endpoints, and optimize conversation storage and indexing to ensure high performance and scalability across platform