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rafalkaliszczuk/README.md

Hi there, I'm Rafał 👋

Data Engineer with 4+ years of experience building data warehouses and infrastructure. I've worked across the full stack - from raw ingestion and warehouse modeling to BI tooling and IaC.

Currently at Booksy, where I design and maintain the data platform powering a global beauty marketplace. My day-to-day involves dbt models, Airflow DAGs, BigQuery, and Terraform - with a focus on reliability, observability, and making data easy to use for the people who depend on it.

On the side, I love building tools and automations which make your daily work easier.

Tech Stack

Python SQL dbt Apache Airflow Google Cloud BigQuery Terraform Looker Git Postgres Microsoft SQL Server Power BI Azure R

Projects

DataStack Radar — Changelog monitoring for the data stack. Watches official releases and GitHub for 26 data tools every 6 hours, classifies changes as breaking/warning/info using AI, and sends a plain-English digest so you don't miss the one line in a migration guide that breaks your DAGs.

DBML Visualizer — Browser-based ER diagram viewer for DBML schemas. Upload a file, paste contents, or embed at build time. No backend required.

LookMate — Python linter for LookML. Catches naming issues, missing descriptions, and structural mistakes in Looker views and measures before they hit production. Plugs into pre-commit with one line.

git-nudge — Lightweight automation tool that reminds your team about stale PRs and MRs via Slack. Because code reviews don't review themselves.

Certifications

Let's connect and talk!

LinkedIn

Pinned Loading

  1. git-nudge git-nudge Public

    GitNudge is a lightweight Python tool that helps teams keep pull requests moving. It automatically detects inactive GitHub Pull Requests and GitLab Merge Requests and sends friendly Slack reminders…

    Python

  2. look-mate look-mate Public

    LookMate is a Python linter for LookML. It catches naming issues, missing descriptions, and structural mistakes in your Looker views and measures before they hit production. Simple to configure, ea…

    Python

  3. data-viz-shiny-app data-viz-shiny-app Public

    Data visualization shiny app

    R

  4. dbml-visualizer dbml-visualizer Public

    Browser-based ER diagram viewer for DBML schemas. Upload a file, paste contents, or embed at build time. No backend required.

    TypeScript