Open to Remote Roles & On-site Opportunities in Bahía Blanca, Argentina

Hi, I'm Bautista Fajardo

Computer Science student at Universidad Nacional del Sur (UNS) & Machine Learning / Software Developer. Specialized in building end-to-end ML pipelines, recommendation systems, and asynchronous REST APIs with Python, FastAPI, and robust data persistence.

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⚡ Specialization
ML & Backend
End-to-end ML pipelines, feature stores, and asynchronous REST API services with Python.
🎓 Foundation
UNS CS Undergrad
Rigorous background in Algorithms, Data Structures, Linear Algebra, and Logic.
📐 Architecture
SOLID & Clean Code
Strict type hinting, modular object-oriented design, and maintainable systems.
🟢 Availability
Remote & On-site
Actively exploring Remote roles and On-site opportunities in Bahía Blanca, Argentina.
Engineered Solutions

Featured Projects

Real-world systems highlighting machine learning pipelines, REST APIs, and performance-optimized architectures.

MLOps & Predictive Modeling

WhereItLands

End-to-End ML Football Match Predictor & MLOps API
  • Engineered a modular ML pipeline adopting OOP and SOLID principles, achieving a 64.5% 3-way match accuracy for predicting World Cup results.
  • Developed a StackingRegressor ensemble and bivariate Poisson regression with Coles-Dixon correction for exact score probabilities.
  • Processed 14,000+ historical matches to build an OO-ELO rating system calculating team momentum via tournament weights and home advantage.
  • Built an asynchronous FastAPI/Uvicorn REST API utilizing a Feature Store pattern with Joblib and Parquet serialization to minimize model loading latencies.
Python FastAPI Scikit-Learn XGBoost Uvicorn PyArrow (Parquet) Joblib MLOps SOLID
GitHub Repository Test Online Demo
PIPELINE OVERVIEW v2.4 [PROD]
Dataset Ingestion 14,000+ Matches
Feature Store Parquet + Joblib
Stacking Ensemble 64.5% Accuracy
API Delivery FastAPI Async
Desktop Software & Persistence · Dec 2025 – Mar 2026

Tivitapp

Productivity Suite & Automated Analytics Engine
  • Designed a relational SQLite3 database for high-efficiency data persistence and transaction integrity.
  • Engineered an automated PDF reporting system that generates detailed visual performance metrics and real-time analytics distribution.
  • Implemented a customizable Pomodoro timer with comprehensive time tracking and a dynamic priority queue for adaptive task management.
Python SQLite3 PyQt6 FPDF2 OOP Architecture
View Code on GitHub Download .exe Release
Tivitapp Productivity Suite Logo
Machine Learning & Algorithm Optimization · Jan 2024 – Feb 2024

Media RS

Content-Based Recommendation Engine with CSR Matrix Caching
  • Implemented cosine similarity with memory optimization via SciPy CSR sparse matrices, enabling scale to millions of items without memory bottlenecks.
  • Integrated a Pickle-based caching layer for similarity matrices, accelerating recomputation and loading times by over 50% for large item sets.
  • Developed a weighted hybrid scoring formula merging similarity metrics with item popularity, significantly boosting recommendation relevance.
Python SciPy Pandas CSR Sparse Matrix Pickle Caching Machine Learning
View Source Code
Media RS Python Source Code
Technical Competencies

Skills & Technologies

Structured expertise in programming languages, machine learning frameworks, data architectures, and software engineering methodologies.

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Programming Languages

  • Python OOP & Type Hinting
  • Java Core Concepts & OOP
  • SQL Relational Schemas & Queries
🧠

Machine Learning & Data

  • Scikit-Learn ML Pipelines & Ensembles
  • XGBoost & LightGBM Gradient Boosting Models
  • Pandas & NumPy Data Wrangling & Analytics
  • SciPy CSR Sparse Matrix Scaling
⚙️

Frameworks & Libraries

  • FastAPI & Uvicorn Async REST API Microservices
  • SQLite3 Relational Data Persistence
  • PyArrow (Parquet) & Joblib Feature Store Serialization
  • PyQt6 & PySide6 Modular Desktop Applications
📐

Tools & Methodologies

  • MLOps & Feature Store Model Lifecycle & Caching
  • SOLID & OOP Architecture Maintainable Clean Code
  • Event-Driven Architecture Asynchronous Event Flows
  • Git & Version Control Collaborative Workflows
Academic Background

Education

Universidad Nacional del Sur (UNS)
Bachelor of Science in Computer Science
Bahía Blanca, Argentina · March 2025 – Present

Core Coursework & Foundations

Algorithms & Complexity Data Structures Linear Algebra Computing Logic Object-Oriented Design
Let's Connect

Get In Touch

I am actively open to remote Software Engineering and Machine Learning roles, as well as on-site opportunities in Bahía Blanca, Argentina. Feel free to reach out directly via email, phone, or LinkedIn.

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