English:
Upper Intermediate
Cristian C.
Vetted by YouTeam
Colombia
UTC -05:00
America/Bogota
English:
Upper Intermediate
Machine Learning and Artificial Intelligence Specialist with over 4 years of experience using mainly Python, R, and Power BI.
Some of my greatest achievements include: - As AI specialist in Teleperformance, I developed more than 5 end-to-end analytical solutions (statistical models deployed connected to tools of the company or with Front-end) saving up to 40% of operation cost. - As a Sr Data Scientist in BBVA bank I achieved a 10% decrease in the amount of money involved in bank credit card fraud through the creation of machine learning models. - As Data Scientist in Banco de Bogota me and my team triplicated credit card placements through propensity to purchase models. - I started Teleperformance's approach to the blockchain with the development of DAPPS which has been sold as a service to clients. - I have successfully developed and deployed more than 20 models that generate savings or utilities for the companies I worked for.
Want to hire this engineer?
Check if Cristian is availableExpertise
Years of commercial development experience
4 years of experience
Core technologies
Other technologies
Project Highlights
Digital certification App
Feb `22 - Jun `22
4 months
Teleperformance company
Creation of a blockchain-based solution to check the authenticity of a certificate.
Responsibilities & achievements
Develop the Back-end of the solution and the smart contract
Sentiment Analysis of bank calls to report fraud
Apr `21 - May `22
1 year
Teleperformance for BBVA
Sentiment analysis of real conversations recorded from the call center when the bank calls their customers to check if a transaction is a fraud or not.
Responsibilities & achievements
- Develop the solution - Interact with the business to understand calls dynamics
Fraud transactions detection
Nov `20 - Feb `21
3 months
BBVA
Identification of fraud transactions with a classification model.
Responsibilities & achievements
- Understand the needs and nature of the business in order to collect the necessary data. - Data cleansing, descriptive analysis, and predictive modeling - Deploy model to business
Identification of customers accoding their propensity to fraud
Sep `20 - Nov `20
2 months
BBVA
Unsupervised model for clustering types of customers according to their propensity to fraud.
Responsibilities & achievements
- Understand the needs and nature of the business in order to collect the necessary data. - Data cleansing, descriptive analysis, creation, and interpretation of unsupervised model - Deploy model to business
Life Insurance Sales
May `19 - Aug `19
3 months
Banco de Bogota
A statistical model to predict the purchase of life insurance via phone campaign
Responsibilities & achievements
- Understand the needs and nature of the business in order to collect the necessary data. - Data cleansing, descriptive analysis, and predictive modeling - Deploy model to business
Education
Higher education in Computer Science
Agency
50-100
GMT-6
Mexico City/Mexico
Core Expertise
Industries
Business & Productivity, Logistics & Transportation, E-Commerce & Retail, Information services & Technologies, Construction & Real estate, Travel & Tourism, Augmented reality, SaaS, Energy, Telecommunication, Conversational automation, Management System & Automation
Want to hire this engineer?
Check if Cristian is available