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Ignacio – Python, React, LLM, experts in Lemon.io

Ignacio

From Chile (UTC-3)flag

Back-end Web Developer|Senior
AI Engineer|Middle
Machine Learning Engineer|Middle
Front-end Web Developer|Middle
LLM

Ignacio – Python, React, LLM

Ignacio is a Senior Backend Engineer and Intermediate AI/Machine Learning Engineer with extensive experience in building LLM-powered applications and scalable backend systems. He has hands-on expertise with LangChain/LangGraph, RAG pipelines, prompt engineering, and API architecture using FastAPI, alongside strong skills in containerized deployments and CI/CD. Ignacio’s background spans both modern AI productization and classical deep learning, with a track record of integrating complex AI workflows into production-ready systems. He is best suited for roles at the intersection of applied AI and backend engineering, where robust system design meets cutting-edge AI capabilities.

12 years of commercial experience in
AI
Healthcare
Information services
Machine learning
Medtech
Main technologies
Python
8 years
React
6 years
LLM
2 years
Cloud Computing
4 years
Additional skills
Microsoft Azure
AWS
GCP
PHP
FastAPI
Flask
Django
Tailwind CSS
Typescript
Tensorflow
PyTorch
LangChain
Direct hire
Possible
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Experience Highlights

Senior Backend Developer, LLM Integration Specialist
Jul 2025 - Ongoing1 month
Project Overview

A pharmaceutical company is focused on integrating assistants to help with different communication channels so that the user can access various tools from multiple sources.

Responsibilities:
  • Implemented workflows of conversation using Langgraph and Langchain;
  • Integrated flows of conversation into already working platforms.
Project Tech stack:
LangChain
Python
React
Main Leader, Developer and Designer of the whole platform
Sep 2020 - Ongoing4 years 11 months
Project Overview

A management platform for Drone flights includes HD Maps, flight routes, live alerts, and everything related to drone flight operations.

Responsibilities:
  • Created the whole system from zero;
  • Built real-time notifications;
  • Implemented custom KMZ processing system with Container Apps dynamic scaling.
Project Tech stack:
Django
FastAPI
React
Next.js
PostgreSQL
Fullstack Developer, LLM Integration specialist, DevOps
Sep 2023 - Jun 20251 year 9 months
Project Overview

A consulting company that provides various developments focused on LLM integration. The main projects were Multi-Agent Assistants with RAG integration to provide access to technical information through a Chat UI integrated with SharePoint.

Responsibilities:
  • Deployed systems to Serverless, Container Apps, and Kubernetes environments;
  • Designed Langgraph systems with Python and Typescript;
  • Implemented a complete stack system from 0 with NextJS and Python;
  • Managed SharePoint connections with the RAG and the frontend for permission-based file access.
Project Tech stack:
LangChain
Claude LLM
LLM
GPT-4
Next.js
Kubernetes
Microsoft Azure
Cosmos
Qdrant
RAG
Full-Stack developer, Tech lead, Machine Learning Engineer
May 2022 - May 20231 year
Project Overview

A web platform allowed users to be diagnosed by a Dialog Flow and a Vision Machine Learning model that reviewed dental RXs from the patient to detect early caries and anomalies. The project was funded by government funds and was shut down after a few years of operation.

Responsibilities:
  • Designed the software for the platform;
  • Implemented the FastAPI backend and the React frontend;
  • Deployed the application into a Docker Swarm node;
  • Executed planning and task assignments for 1 frontend developer and 1 backend developer;
  • Trained a MaskRCNN model for detecting caries and anomalies in RXs.
Project Tech stack:
React
FastAPI
Tensorflow
Machine Learning and Backend Engineer
Sep 2021 - May 20231 year 8 months
Project Overview

A company that implements automation and machine learning solutions. Cooperation involved 2 main projects:

  • Implementation of a vision model for detecting personal security element alerts for workplaces based on analyzing images sent through Kafka.
  • Implementation of 3 different Machine Learning models for detecting caries and anomalies in dental RXs.
Responsibilities:
  • Trained YOLO vision models on custom data with results of more than 85% accuracy;
  • Implemented automation services in EC2 for the YOLO vision execution using rq queues;
  • Worked with MaskRCNN vision model on custom data with GCP GPU clusters to achieve between 75 and 85% accuracy;
  • Trained a U-Net model for the detection of dental pieces in RXs.
Project Tech stack:
PyTorch
Tensorflow
YOLO
Computer Vision
Python

Education

2020
Software Engineer
Bachelor's

Languages

Spanish
Advanced
English
Advanced

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