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David Orozco

@davidorozco2

Data Scientist at APIUX, where I developed real-time facial verification at ~50 ms per image with 86–90% precision.

At APIUX, I designed a Snowflake and Airflow inference pipeline for real-time facial biometric verification, reaching ~50 ms per image and 86–90% precision.

I also built a Snowflake-backed fraud detection platform with FastAPI microservices for risk scoring, RBAC, audit logging, and data-quality validation.

As a freelance Data Scientist, I developed predictive maintenance solutions for industrial IoT that contributed to ~30% lower equipment downtime, and customer segmentation that improved campaign effectiveness by 25%.

Earlier, I built cloud ETL pipelines at Tata Consultancy Services using Python and AWS Lambda, S3, and EC2. My work spans machine learning, data engineering, and MLOps across AWS, Azure, Google Cloud, IBM Cloud, and Snowflake.

Experience

Work history, roles, and key accomplishments

Current

Freelance Data Scientist

Current

Multiple Clients

Dec 2025 - Present (10 months)

Developed clustering solutions for healthcare, banking, customer, product, financial, and geospatial segmentation. Applied unsupervised learning to clinical data for patient profiling and early disease detection.

K Means DBSCAN HDBSCAN GMM Hierarchical clustering scikit learn Unsupervised Learning Clinical Data Analysis IoT Sensor Data LSTM Prophet

Data Scientist

APIUX (Apiux Tecnologia SpA)

Jul 2025 - Dec 2025 (5 months)

Designed an AI inference pipeline for real-time facial biometric verification and built a fraud detection platform with FastAPI microservices. Automated large-scale ETL workflows in Airflow for ingestion, transformation, and monitoring.

Snowflake Airflow fastAPI RBAC Data Quality ETL Facial Recognition Fraud Detection Microservices

Data Scientist

Freelancer

Dec 2023 - Jul 2025 (1 year 7 months)

Built predictive maintenance solutions for industrial IoT and developed ML-based customer segmentation. Created multilingual NLP pipelines and architected ELT/ETL pipelines with various cloud tools.

LSTM Prophet Anomaly Detection K Means DBSCAN BERT RoBERTa RAG Claude OpenAI Snowflake DBT Azure Data Factory BigQuery Databricks Prefect Airflow Power BI BASH

Cloud Data Engineer

Tata Consultancy Services

May 2023 - Nov 2023 (6 months)

Built serverless ETL pipelines with Python and AWS services, delivering reliable datasets for analytics. Implemented cloud data governance with IAM-based access control and observability dashboards.

Python AWS Lambda S3 EC2 ETL IAM Data Governance Observability

Data Engineer

Bancolombia

Jan 2022 - Oct 2022 (9 months)

Built Python microservices and SQL data models for automated ETL workflows, deploying AWS Lambda functions for ML inference. Developed AI projects on Azure and IBM Cloud for real-time decision-making.

Python SQL ETL AWS Lambda Azure IBM Cloud Microservices Data Quality

Data Engineer

Institución Universitaria de Envigado

Jun 2020 - Dec 2020 (6 months)

Optimized databases and enforced data-quality standards across institutional AI projects, improving dataset robustness for analysis and model development.

Database Optimization Data Quality AI Projects