# Data Pipelines (ETL/ELT) > Selected Engineer ApS work demonstrating Data Pipelines (ETL/ELT) — the achievements that prove it. - [Automated GIS SaaS application deployment, data processing, and reporting system using GitHub Actions CI/CD, Python, Bash, and SQL.](https://platform.engineer.company/portfolio/automated-gis-saas-application-deployment-data-processing-and-16/) - [Automated delivery of 20 GIS data pipelines and app data ETL processes, streamlining infrastructure automation and reporting.](https://platform.engineer.company/portfolio/automated-delivery-of-20-gis-data-pipelines-and-17/) - [Streamlined data analysis and software development processes, saving 4,000 hours by introducing GitHub, GitLab, Bash, and Python CI/CD practices.](https://platform.engineer.company/portfolio/streamlined-data-analysis-and-software-development-processes-saving-43/) - [Automated data processing tasks using Shell scripting, PL/pgSQL, Python, and Transact‑SQL, increasing productivity and efficiency.](https://platform.engineer.company/portfolio/automated-data-processing-tasks-using-shell-scripting-pl-45/) - [Architected, developed, implemented, supported infrastructure, data processing, and the map application for 2 years non‑stop without any weekends, holidays, or vacations, 10–14 hours a day.](https://platform.engineer.company/portfolio/architected-developed-implemented-supported-infrastructure-data-processing-and-55/)