Mark Anthony Baltazar

Hello, I'm

Mark Anthony Baltazar


Data Engineer | Passionate about transforming data into actionable insights and building efficient data pipelines.

/ Career

A brief overview of my career

Jan 2025 - Present

Freelance Data Analyst

Freelance

Supported client data workflows involving data cleaning, validation, reconciliation, and normalization across multiple source systems.

SQLPythonPipeline AutomationData Warehousing
Mar 2021 - Oct 2024

Benefits Administrator

Proview Global

Led daily data operations, workload allocation, and SLA compliance for a benefits administration team while serving as the primary point of contact for onshore client escalations.

System IntegrationBenefits AdministrationError ResolutionCarrier File Management
Nov 2019 - Aug 2020

Marketing Analyst

Masergy Communications

Managed CRM data hygiene and usability by leading database clean-up, lead deduplication, and data migration initiatives between Salesforce and HubSpot.

SQLCRM MigrationTableauHubSpotDigital Marketing Analytics
Apr 2016 - Aug 2019

Data Analyst, SME

Proview Global

Subject Matter Expert and team lead for a 5-member data operations team handling end-to-end workflows, system configurations, and quality assurance for new client implementations.

System ConfigurationData ModelingOperational ReportingSubject Matter Expert
Aug 2014 - Apr 2016

Data Processing Analyst

Accenture

Managed high-volume retiree data operations, enrollments, and monthly billing reconciliation datasets while maintaining strict data integrity.

VBA AutomationExcelData AuditingRetiree Benefits Administration

/ Featured Projects

A selection of professional work, published apps, and experimental prototypes.

SQL Data Warehouse Project screenshot 1SQL Data Warehouse Project screenshot 2
Data Engineering

SQL Data Warehouse Project

A modern data warehouse using SQL Server to consolidate sales data, enabling analytical reporting and informed decision-making.

SQL Medallion Architecture ETL Pipelines Documentation
Data Engineering Zoomcamp screenshot 1Data Engineering Zoomcamp screenshot 2
Data Engineering

Data Engineering Zoomcamp

A comprehensive data engineering project that involved building a scalable data pipeline to ingest, process, and analyze large datasets using modern tools and best practices.

Docker Terraform BigQuery Google Cloud Platform
CSV File Cleaner screenshot 1CSV File Cleaner screenshot 2
Data Engineering

CSV File Cleaner

A Python-based tool designed to clean and preprocess CSV files by handling missing values, removing duplicates, and standardizing data formats, improving data quality for analysis.

Docker Python UV CSV

/ Tech Stack

Breakdown of my technical skills, categorized by domain and proficiency

Expert
Proficient
Beginner

Languages & Frameworks

Python
PySpark
Pandas
SQLAlchemy

Data Platforms & Warehouses

GCP
BigQuery
Databricks
PostgreSQL
MSSQL

Orchestration & DevOps

Kestra
Docker
Docker Compose
Terraform
UV

BI & Analytics

PowerBI
Tableau
Excel

Web Development

Astro
React
JavaScript
HTML
CSS

/ Contact Me

Feel free to reach out. I'm always open to discussing new projects and opportunities.