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Building my Data/BI stack 📊
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DataTideHH/README.md

DataTideHH profile banner with portrait, logo and data branding

Tobias Wietelmann | DataTideHH

Data & Process Analysis · Power BI · Microsoft Fabric · SQL · Python · Hamburg

Power BI Microsoft Fabric SQL Python Hamburg

Profile

I am training as a Fachinformatiker für Daten- und Prozessanalyse (IHK, expected completion 06/2027) and building a practical portfolio around Data/BI, process analytics, Power BI, Microsoft Fabric, SQL and Python.

My focus is on turning business processes into clear data models, dashboards, KPIs and actionable insights.

My background combines communications, PR and media work, academic experience in German and American Studies as well as Journalism, Media and Communication Studies, and experience in international business contexts.

This helps me approach data work not only technically, but also from a business, documentation and stakeholder perspective.

Today, I am building a practical Data/BI profile with a strong focus on the Microsoft Data Stack, SQL, Python and process-oriented analytics.

Focus Areas

Area Current Focus
Data & BI Power BI, reporting, KPIs, dashboards
Data Modelling SQL, relational databases, clean data structures
Analytics Python, data cleaning, automation, analysis
Microsoft Stack Power BI, Microsoft Fabric, Azure fundamentals
Infrastructure Linux basics, Cisco networking fundamentals, switching, VLANs, secure remote access documentation
Business Context Process analysis, documentation, stakeholder communication

How I Work

I focus on reproducible, documented Data/BI workflows:

  • Clear business questions
  • Documented data sources
  • Simple and explainable data models
  • Validation checks before interpretation
  • Readable SQL and Python
  • Stakeholder-oriented summaries
  • Responsible use of AI-assisted tools

Tech Stack

Data & BI

Power BI · Microsoft Fabric · SQL · Excel · Data Modelling · KPIs · Reporting

Programming & Analysis

Python · pandas · NumPy · matplotlib · Java basics · C/C++ basics

Databases

Microsoft SQL Server · SQL Server in Docker · MySQL · MariaDB · Relational data modelling

Development Tools

Git · GitHub · VS Code · PyCharm · IntelliJ IDEA · DataGrip · DataSpell · CLion

Cloud, Containers, Networking & Infrastructure

Microsoft Azure fundamentals · Docker Desktop · Linux basics · Cisco switching fundamentals · Tailscale remote access lab

Currently Building

  • A practical Data/BI portfolio focused on Power BI, Microsoft Fabric, SQL and Python
  • Small, reproducible learning repositories for core development workflows
  • A Hamburg-based exploratory data analysis project: hamburg-district-data-basics
  • A documented remote-access lab using Tailscale across Windows, macOS and iOS devices: remote-access-network-lab
  • A documented Cisco switching lab for CCNA-level fundamentals: cisco-switching-lab
  • A static portfolio website for datatidehh.de

Selected Repositories

Repository Focus
hamburg-district-data-basics Initial Hamburg district profile data analysis using Python, pandas and public city data
python-data-basics Python 3.12 data environment with pandas, NumPy, matplotlib and scikit-learn
sql-server-docker-basics Microsoft SQL Server 2022 Docker learning project using DataGrip, SQL scripts and DPA-style training data
remote-access-network-lab Documented Tailscale-based remote access lab connecting Windows, macOS and iOS devices, including SSH over a private Tailnet
cisco-switching-lab Documented Cisco switching lab using Catalyst switches for VLANs, trunks, STP and basic Layer 3 concepts
java-basics Java 21 learning project with IntelliJ IDEA, Eclipse Temurin and a small IPv4 subnet calculator
cpp-basics C++20 learning project with CLion, CMake, Ninja and a small IPv4 subnet calculator

These repositories document small, practical setup and learning projects. They are intentionally simple and focus on clean tooling, reproducible environments and basic development workflows.

Current Portfolio Direction

I am building projects that demonstrate practical Data/BI skills:

  • Power BI dashboards with clean data models and business KPIs
  • Documented learning paths in Data/BI and IT fundamentals
  • Hands-on portfolio development with GitHub, SQL, Python and Power BI
  • Clear focus on Microsoft Data Stack and Hamburg-based opportunities
  • Additional practical exposure to networking, Linux basics, Cisco switching and secure remote-access documentation

Contact

Pinned Loading

  1. hamburg-district-data-basics hamburg-district-data-basics Public

    Initial Hamburg district profile data analysis using Python, pandas and public city data

    Python

  2. python-data-basics python-data-basics Public

    Python 3.12 data environment test project using PyCharm, DataSpell, Jupyter, pandas, NumPy, matplotlib and scikit-learn.

    Python

  3. sql-server-docker-basics sql-server-docker-basics Public

    Microsoft SQL Server 2022 Docker learning project using DataGrip, SQL scripts and DPA-style training data.

    TSQL

  4. remote-access-network-lab remote-access-network-lab Public

    Documented VPN and remote access learning lab for Windows, macOS and mobile devices

  5. java-basics java-basics Public

    Java 21 learning project with IntelliJ IDEA, Eclipse Temurin and a small IPv4 subnet calculator

    Java

  6. cpp-basics cpp-basics Public

    C++20 learning project with CLion, CMake, Ninja and a small IPv4 subnet calculator

    C++