Open to opportunities

Spencer Allen

@spencerallen

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Senior data engineer transforming multi-source data into secure, scalable cloud datamarts.

Philippines

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What I'm looking for

I’m looking for a role where I can own end-to-end data pipelines and quality testing in cloud environments (AWS/Azure), collaborate with stakeholders, and build scalable reporting/analytics platforms using modern orchestration and data engineering best practices.

I'm a Senior Data Engineer at a technology firm specializing in infrastructure, computing, network security, and business consulting. I previously served as a Lead Data Scientist at an IT asset and software management company.

In my most recent role, I designed and implemented robust data pipelines using Python and PySpark to ingest and transform multi-source data into AWS datamarts for advanced analytics and reporting. I automated ingestion and transformation with Airflow DAGs, ensured data quality through unit and end-to-end testing, and maintained source-to-target mappings to keep data integrity consistent from source systems to cloud targets. I also led knowledge transfer and documentation efforts, aligning with business stakeholders to deliver strategic goals.

I’ve built data integrations and reporting workflows across platforms, including refactoring Databricks Python ingestion into optimized HiveQL workflows and delivering automated Python-based transformations on AWS Lambda for financial services. I’m currently expanding my skills through a serverless stock market data pipeline on Microsoft Azure Functions and Azure Data Lake Storage Gen2.

Experience

Work history, roles, and key accomplishments

Senior Data Engineer

Novare Security Bank Corporation

Oct 2025 - Apr 2026 (6 months)

Implemented and maintained source-to-target mappings to ensure data integrity across systems, while validating end-to-end data flow using unit and integration testing for PySpark and Airflow. Led documentation and knowledge transfer to support scalable future development.

Python Pyspark Apache Airflow Source To Target Mapping Data Integrity Integration Testing Knowledge transfer

Data Engineer

Meralco

Feb 2025 - Sep 2025 (7 months)

Ensured accurate data integration by creating source-to-target mappings and documentation for table and flat-file ingestion into Hive tables. Refactored Python (Databricks) ingestion scripts into optimized HiveQL workflows to support downstream BI and reporting.

Python Databricks Hive Data Ingestion Source To Target Mapping Data Integration Data Documentation BI Reporting Data Migration

Senior Data Engineer

Novare Security Bank Corporation

Aug 2023 - Jan 2025 (1 year 5 months)

Designed and implemented data pipelines in Python and PySpark to ingest and transform multi-source data into AWS datamarts for analytics and reporting. Built Airflow DAGs for automated ingestion and schema evolution from on-prem and flat-file sources to the cloud data platform.

Python Pyspark Data Marts Apache Airflow Data Pipelines And Schema Evolution Source To Target Mapping Technical Documentation

Data Engineer

CIS Bayad Center, Inc.

Apr 2023 - Aug 2023 (4 months)

Developed Python-based data transformations on AWS Lambda to deliver automated reporting for financial services and bill payment operations. Streamlined reporting data processing through serverless transformation workflows.

Python AWS Lambda data transformation ETL Serverless Computing Financial Data Data Pipelines

Data Scientist

Open iT, Inc.

Jun 2021 - Apr 2023 (1 year 10 months)

Led the development and deployment of a custom Python-based reporting solution integrated into the company’s core web product to improve reporting flexibility and customer insights. Built a simulation-driven optimization tool for licensing strategy recommendations and advanced a time-series forecasting product using feature engineering and model selection.

Python Machine Learning Neural Networks Time Series Models Feature Engineering Model Evaluation

Education

Degrees, certifications, and relevant coursework

Southern Luzon State University

Bachelor of Science in Electronics Engineering, Electronics Engineering

2015 - 2020

Grade: Cum Laude

Activities and societies: Awarded Cum Laude; Ten Outstanding Students of SLSU (2020, 4th Place).

Earned a Bachelor of Science in Electronics Engineering at Southern Luzon State University. Graduated with Cum Laude and was recognized among outstanding students.