# Data Analytics > Selected Engineer ApS work demonstrating Data Analytics — the achievements that prove it. - [Drove brand engagement and loyalty by 100% through market trend analysis and consumer behavior insights.](https://engineer.company/portfolio/drove-brand-engagement-and-loyalty-by-100-through-2/) - [Engineered hourly electricity consumption aggregation pipeline in Python / SQL / Bash + Jq, achieving 180ms for 30‑day datasets across heterogeneous JSONL sources.](https://engineer.company/portfolio/engineered-hourly-electricity-consumption-aggregation-pipeline-in-python-4/) - [Developed and launched the company's first observability dashboard, providing real‑time system performance insights and data visualization on the large office TV.](https://engineer.company/portfolio/developed-and-launched-the-company-s-first-observability-9/) - [Delivered 8 Power BI projects with comprehensive manuals, integrating Microsoft Power BI tools with NodeJS API and Python FastAPI for effective data analytics and visualization.](https://engineer.company/portfolio/delivered-8-power-bi-projects-with-comprehensive-manuals-10/) - [Released 500 electricity and GIS data analysis reports, utilizing deep research and troubleshooting to ensure accurate geographic and time series big data insights.](https://engineer.company/portfolio/released-500-electricity-and-gis-data-analysis-reports-11/) - [Deployed and maintained 20 Docker containerized applications, troubleshooting with Podman and Kubernetes, and managing R‑based apps on Google Cloud and AWS.](https://engineer.company/portfolio/deployed-and-maintained-20-docker-containerized-applications-troubleshooting-19/) - [Optimized forecasting and investment strategies for 11 electricity grid operators, driving operational efficiency through data‑driven GIS solutions.](https://engineer.company/portfolio/optimized-forecasting-and-investment-strategies-for-11-electricity-27/) - [Presented 200 UI/UX improvements for the GIS map application, boosting revenue by 10x through enhanced software features.](https://engineer.company/portfolio/presented-200-ui-ux-improvements-for-the-gis-28/) - [Streamlined data analysis and software development processes, saving 4,000 hours by introducing GitHub, GitLab, Bash, and Python CI/CD practices.](https://engineer.company/portfolio/streamlined-data-analysis-and-software-development-processes-saving-43/) - [Developed a Data Analytics reporting system, increasing quarterly software revenue by 400% through Python‑based PDF reports.](https://engineer.company/portfolio/developed-a-data-analytics-reporting-system-increasing-quarterly-44/) - [Delivered analysis and regular progress reports to the CEO, translating engineering metrics and delivery status into decisions.](https://engineer.company/portfolio/delivered-analysis-and-regular-progress-reports-to-the-81/) - [Built first‑party product analytics in PostgreSQL — 47 functions over partitioned event tables that prune themselves — pseudonymised behind a rotating salt and gated on the visitor's consent.](https://engineer.company/portfolio/built-first-party-product-analytics-in-postgresql-101/)