AI & Full Stack Developer

Willy Samuel Paz Colque

Cochabamba, Bolivia · LinkedIn · GitHub · Email

Full-Stack & AI Developer with over 4 years of experience building web services, chatbots, and AI assistants. Specialized in backend development, computer vision (OCR), chatbots, and AI assistants, delivering scalable and innovative solutions that enhance user experience and generate measurable business value.

Professional Experience

Freelancer

Backend, AI & Chatbots Developer · sep 2020–present

  • Developed an advanced conversational AI system with LLM integration (OpenAI) and vector database (MongoDB Atlas), utilizing LangChain to implement retrieval-augmented generation (RAG) capabilities for complex contexts.
  • Built a modular chatbot service with FastAPI supporting multiple platforms (Telegram, WhatsApp, Web) with persistent conversation context management, integrating LangChain for semantic context handling.
  • Implemented context engineering strategies to reduce openai service costs.
  • Integrated semantic context management and vector storage tools to improve response accuracy and relevance, using LangChain to orchestrate components.
  • Developed an AI-powered content moderation service based on image recognition, filtering inappropriate content.
  • Construction of simple question-and-answer chatbots for informational purposes.

Hospy

Full Stack Developer (Computer Vision & OCR) · nov 2024–feb 2025

  • Designed an OCR RESTful API with Google Cloud Vision to extract text from official documents (DNI, passports, etc.).
  • Implemented spatial text analysis that detects document type and country of origin.
  • Improved accuracy of key fields (names, IDs, dates) through advanced regular expressions.
  • Automated the creation of templates for structural document recognition, facilitating the integration of new formats.
  • Built unit tests using real dataset samples, ensuring robustness in multiple scenarios.
  • Integrated external platforms with Hospy, contributing to increased customer acquisition.

Canned Head

Full Stack Developer · nov 2021–nov 2023

  • Delivered an automated web service that records Typeform responses and generates dashboards and PDF reports.
  • Reduced platform loading times by 70% through performance optimization (caching, lazy-loading, efficient SQL queries).
  • Implemented unit tests that improved code quality and reliability.
  • Automated employee data pipelines for performance metrics and evaluations, accelerating report generation processes.

Featured Projects

ChekiBot

A sophisticated conversational AI system built with Python, FastAPI, and LangChain Core, designed to provide intelligent chatbot capabilities using various language models including Nebius and OpenAI. This project was developed for chequeabolivia.bo.

Python FastAPI LangChain OpenAI API Nebius MongoDB Atlas Docker Nginx
View Project

Skills

Soft Skills

Teamwork Self-taught Adaptability Problem-solving Analytical thinking Attention to detail Autonomy and proactivity Ability to learn Basic English (B1)

Technical Skills

Python Javascript Typescript Nodejs Nestjs ExpressJS FastAPI Flask ReactJS React Native Django Tensorflow Pytorch Langchain SQL databases MongoDB Git Github Docker Linux AWS Lambda