Personal details

Daniel C. - Remote data engineer

Daniel C.

Sr Data/AI Consultant
Based in: 🇨🇴 Colombia
Timezone: Bogota (UTC-5)

About

I am an experienced data scientist who possesses a strong passion for problem-solving and an unwavering commitment to continuous learning. With a particular focus on data analysis, machine learning modeling, and business strategy, I strive to leverage these domains as powerful tools for structuring, generating, and amplifying impactful solutions. Drawing upon my expertise in data science, I employ advanced analytical techniques to extract valuable insights from complex datasets. Through meticulous interpretation and visualization of data, I uncover patterns that drive informed decison-making.

Work Experience

Associate Managing Consultant, Performance Analytics
Mastercard | Oct 2025 - Present
Python
SQL
HDFS
Apache Hadoop
Langchain
Generative AI
  • Built a chargeback resolution AI agent for bank clients across LatAm and the Americas, combining LLM-based reasoning, OCR document detection, and rule-based logic to classify and route transactions as fraudulent within a compliance-sensitive banking workow.
  • ˆLed the technical development plan for the AI agent, directing task breakdown for a 2-person team as lead developer/consultant.
  • Deployed fraud detection and segmentation models  including the chargeback agent  to production using AWS Sagemaker with Docker/Kubernetes containerization and CI/CD pipelines (GitHub Actions).
  • ˆDeveloped fraud rules and performance benchmarks for bank clients across LatAm and the Americas, processing transaction data at scale with PySpark/Hadoop big-data pipelines
Data Scientist Sr
Globant | Nov 2023 - Nov 2025
Python
Data Science
Generative AI
RAG
  • Built AI tools for a large consulting-rm account, including a document analyzer for automated data extraction and a LangChain-based chatbot using LLMs and RAG.
  • ˆBuilt an AutoRAG-based system with a vector database to extract deliverables from contract documents and ag discrepancies against tracked obligations across multiple client projects/contracts

Education

Universidad de los Andes
Master's degree・Economics
Aug 2022 - Feb 2024
Universidad de los Andes
Bachelor's degree・Business Administration
Feb 2018 - Feb 2022

Certifications & Awards

Data Analyst
DataCamp | Jul 2023
Data Scientist
Data Camp | Jul 2023