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I'm a results-driven Senior Software Engineer with a passion for building reliable data pipelines, scalable backend systems, and cloud-based automation. I enjoy turning complex data challenges into robust, maintainable solutions that empower analytics teams and product stakeholders. Over the years I've designed ETL/ELT pipelines, migrated services to containerized environments, implemented CI/CD, and mentored engineers while delivering Django and FastAPI platforms. I thrive on clean code, testing, and collaborative, cross-functional teamwork.…I'm a results-driven Senior Software Engineer with a passion for building reliable data pipelines, scalable backend systems, and cloud-based automation. I enjoy turning complex data challenges into robust, maintainable solutions that empower analytics teams and product stakeholders. Over the years I've designed ETL/ELT pipelines, migrated services to containerized environments, implemented CI/CD, and mentored engineers while delivering Django and FastAPI platforms. I thrive on clean code, testing, and collaborative, cross-functional teamwork.

Lester Cayabyab

Back-End Developer, Full Stack Developer, Data Scientist, +2

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I'm a results-driven Senior Software Engineer with a passion for building reliable data pipelines, scalable backend systems, and cloud-based automation. I enjoy turning complex data challenges into robust, maintainable solutions that empower analytics teams and product stakeholders. Over the years I've designed ETL/ELT pipelines, migrated services to containerized environments, implemented CI/CD, and mentored engineers while delivering Django and FastAPI platforms. I thrive on clean code, testing, and collaborative, cross-functional teamwork.…I'm a results-driven Senior Software Engineer with a passion for building reliable data pipelines, scalable backend systems, and cloud-based automation. I enjoy turning complex data challenges into robust, maintainable solutions that empower analytics teams and product stakeholders. Over the years I've designed ETL/ELT pipelines, migrated services to containerized environments, implemented CI/CD, and mentored engineers while delivering Django and FastAPI platforms. I thrive on clean code, testing, and collaborative, cross-functional teamwork.

Available to hire

I’m a results-driven Senior Software Engineer with a passion for building reliable data pipelines, scalable backend systems, and cloud-based automation. I enjoy turning complex data challenges into robust, maintainable solutions that empower analytics teams and product stakeholders.

Over the years I’ve designed ETL/ELT pipelines, migrated services to containerized environments, implemented CI/CD, and mentored engineers while delivering Django and FastAPI platforms. I thrive on clean code, testing, and collaborative, cross-functional teamwork.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Work Experience

Senior Software Engineer at Iron Focus

January 1, 2022 - Present

Led standardization of data pipelines to Prefect; established centralized workflow orchestration; implemented GitHub Actions and semantic versioning for safer deployments and faster rollbacks. Architected and tested in-house Django and FastAPI platforms with ETL/ELT pipelines deployed on GCP second‑gen Cloud Functions, orchestrated through Prefect. Implemented integrated data refresh for Power BI and Tableau; developed WordPress and Drupal plugins to capture attribution and behavioral data; authored comprehensive documentation and standardized onboarding.

Data Engineer at Iron Focus

October 1, 2021 - January 1, 2022

Designed scalable ETL/ELT pipelines using Python and Pandas to transform and deliver reliable datasets. Extracted, validated, and loaded data from PostgreSQL, Microsoft SQL Server, and external REST APIs. Automated data pipelines using Windows Task Scheduler and Google Cloud Functions with Cloud Scheduler. Monitored pipeline availability with UptimeRobot, proactively detecting failures and minimizing downtime. Refactored and standardized code bases to improve readability and long-term support.

Data Engineer at Go Passport Health

July 1, 2020 - August 1, 2021

Determined data storage needs and data warehousing concepts for internal departments; created and enhanced data solutions to ensure seamless data delivery across collection, parsing, management, and analysis of large data sets. Designed, developed, automated, and supported ETL/ELT applications; created API endpoints for data ingestion. Implemented ETL/ELT data models; worked with Python, Pandas, Flask/Django; cloud platforms including Snowflake, Azure SQL, Cosmos DB; Azure Blob Storage; Docker; Azure Functions; orchestrated data extraction and processing pipelines.

Junior Web Developer at Pillars Sorsogon Gov Ph

June 2, 2018 - January 2, 2019

Maintained WordPress website; added new content; provided technical assistance to staff. Built and expanded web solutions using HTML, CSS, JavaScript; backend development with PHP and Laravel; deployed on Linode; collaborated with LGU personnel for IT services.