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jariel17/README.md

Hi there, I'm Jaime Ariel

Computer Science Engineer with 9+ years of professional experience in software quality.


πŸ“‚ Selected Projects

πŸ€– QA Automation

  • qa-automation-suite
    Two independent Python test suites: Playwright/pytest UI automation against a demo e-commerce site, and Postman/Newman API testing against a public statistics API, both verifying real, live behavior rather than mocked responses.
    Focus: page object design, OWASP-anchored security checks, browser performance budgets, and API contract/negative testing.

πŸ“Š Data Engineering & Analytics (Academic)

  • yelp-spark-analytics
    Python ETL pipeline over 700MB of Yelp data, with SparkSQL analysis and distributed storage across MongoDB Atlas, CockroachDB, and PostgreSQL.
    Focus: data transformation, cloud database loading, segmentation queries, and clustering analysis.

  • airbnb_reviews_analysis
    NLP sentiment analysis on Airbnb listings and reviews in Mexico City.
    Focus: text preprocessing, lemmatization, vectorization, classifier training, and a derived customer sentiment metric.

  • time-series-analysis-gold
    Gold price forecasting using Holt-Winters and ARIMA models.
    Focus: seasonality decomposition, autocorrelation analysis, forecasting, and comparative model evaluation.

🧠 Applied Machine Learning (Academic)

  • ml_models
    Machine learning notebooks covering EDA, preprocessing pipelines, model comparison, DVC-tracked data, and MLflow experiment tracking.
    Focus: reproducible applied ML workflows using scikit-learn, XGBoost, DVC, and MLflow.

πŸ› οΈ Technologies I Work With

Tech Stack

Area Tools & Technologies
QA Automation Python, uv, pytest, Playwright, Postman, API testing
QA & Process TestRail, Zephyr, Jira, Agile/Scrum, WCAG accessibility
Data & Analytics SQL, pandas, NumPy, PySpark, SparkSQL
Machine Learning scikit-learn, XGBoost, MLflow, DVC
Backend & Infrastructure FastAPI, Docker, Kafka, GitHub Actions, Linux / WSL
Databases PostgreSQL, MySQL, SQL Server, MongoDB Atlas, CockroachDB
Cloud AWS S3, Lambda, Glue, Athena, AWS Cloud Practitioner

πŸ™‹ About Me

  • πŸ“ Based in Panama.
  • πŸŽ“ Graduated from Licenciatura en Ingenieria en Sistemas y Computacion at Universidad Tecnologica de Panama in 2015.
  • πŸ› 9+ years of experience in software quality assurance.
  • πŸ“Š Pursuing a Master's in Data Analytics, expected Nov 2026.
  • 🏠 Fan of Home Assistant.
  • πŸ•ΊπŸ½ Fun fact: I enjoy dancing more than I'm good at it.

You can contact me on LinkedIn or via email.

Pinned Loading

  1. yelp-spark-analytics yelp-spark-analytics Public

    Python ETL + 10 SparkSQL queries over 700MB of Yelp data, with distributed storage across three cloud databases.

    Jupyter Notebook

  2. airbnb_reviews_analysis airbnb_reviews_analysis Public

    NLP sentiment analysis on Airbnb listings and reviews in Mexico City: lemmatization, vectorization, classifier training, and a derived customer sentiment metric.

    Jupyter Notebook

  3. text-mining text-mining Public

    SMS spam classification using Logistic Regression and Multinomial Naive Bayes, covering preprocessing, vectorization, and model comparison.

    Jupyter Notebook

  4. time-series-analysis-gold time-series-analysis-gold Public

    Gold price forecasting with Holt-Winters and ARIMA models, including seasonality, autocorrelation, and comparative evaluation.

    Jupyter Notebook

  5. kafka-demo kafka-demo Public

    Real-time IoT sensor simulation on a 3-broker Kafka cluster with a FastAPI + WebSocket dashboard and live fault-tolerance demo.

    HTML