Willi Ziegenhagel - Data Analyst

Recommended expert

Barsinghausen, Germany

Experience

Sep 2023 - Present

2 years 5 months

Data Analyst

Analysis of process data
Data preparation with SQL
Development of reports & dashboards in Celonis

May 2023 - Aug 2023

4 months

Dashboard Designer and Power BI Expert

Design of audience-specific dashboards
Development of data models, DAX
Development of reports & dashboards in Power BI
Implementation of row-level security

Oct 2022 - May 2023

8 months

Interim BI Manager & Product Owner

Support in developing a data strategy
Product Owner for multiple data products
Development of data models, reports, DAX, RLS in Power BI
Development of SQL views for data preparation

Mar 2022 - Oct 2022

8 months

BI Consultant

Development of data model and loading processes
Development of reports and dashboards with Power BI and integration into marketing reporting platform

Mar 2022 - Oct 2022

8 months

Data Consultant

Responsible for the data migration stream
Gathering and systematizing business requirements and dependencies
Breaking down work into functionally and technically sensible work packages

Mar 2020 - Feb 2022

2 years

Senior Analytics Consultant

Kaiser X Labs GmbH

Responsibility for identifying, prioritizing, and implementing analytical use cases
Gathering and organizing business requirements and dependencies
Splitting work packages into business and technically meaningful tasks
Competent contact person for analytics topics
Analyzing customer behavior to improve products
Developing KPI models to manage teams

Oct 2018 - Feb 2020

1 year 5 months

Business Analyst & Scrum Master

Hexad GmbH

Responsible for the Scrum process and its correct implementation
Advising the Product Owner on formulating requirements
Facilitating Scrum ceremonies (Daily, Planning, Review, etc.)
Removing blockers for the development team

Dec 2017 - Sep 2018

10 months

Scrum Master / Requirements Manager / BI Analyst

Hexad GmbH

Responsible for the Scrum process and its correct implementation
Advising the Product Owner on formulating requirements
Facilitating Scrum ceremonies (Daily, Planning, Review, etc.)
Analyzing requirements for feasibility and designing data architecture and models

Jan 2017 - Nov 2017

11 months

BI Consultant

mayato GmbH

Requirements management, design, and implementation of an application for internal corporate planning (cost center and cost type planning)
Implementation of a management dashboard and an interface for adjusting permissions

Jul 2015 - Dec 2016

1 year 6 months

BI Consultant

mayato GmbH

Supported project management in creating a data lake pilot
Requirements management, design, and consulting in the context of Big Data technologies (Cloudera tools, Impala, Hive, Spark, Oozie, Sqoop)
Building a data warehouse for risk management in SAP BW
Development and quality assurance of delivered solutions

Mar 2014 - Jun 2015

1 year 4 months

BI Consultant

mayato GmbH

Development of a planning application for sales and demand planning with SAP BW and SAP BW-IP

Summary

Focus on data analysis and visualization
Several years of experience in business intelligence projects
Certified Data Strategy Consultant
Certified Data Analyst (Microsoft Power BI Data Analyst)
Industry experience in automotive, insurance, and retail sectors
Tools: Power BI, Tableau, SQL, R, Python

Skills

Methodical Skills

Facilitation And Consulting 4 Years +++
Agile Project Management (With Scrum & Kanban) 4 Years +++
Traditional Project Management 6 Years ++

Technical Skills

Power Bi (Incl. Dax & Rls) 3 Years +++
Tableau 2 Years ++
Business Analysis 10 Years +++
Data Analysis And Visualization 7 Years +++
Sql (Ms Sql, Pl/sql) 12 Years +++
Python 2 Years ++
R 1 Year +
Data Architecture And Modeling 5 Years ++
Adobe Analytics 3 Years ++
Atlassian Jira 4 Years +++

Languages

German

Native

English

Advanced

French

Elementary

Education

Mar 2010 - Feb 2014

Hannover University of Applied Sciences

Business Informatics · Hanover, Germany

Sep 2005 - Jul 2008

Deutsche Telekom AG

IT Systems Management Clerk · Osnabrück, Germany

Certifications & licenses

Professional Scrum Master

Scrum.org

Certified Data Analyst (Microsoft Power BI Data Analyst)

Certified Data Strategy Consultant

datentreiber.de

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Summary

Skills

Languages

Education

Hannover University of Applied Sciences

Business Informatics · Hanover, Germany

Deutsche Telekom AG

IT Systems Management Clerk · Osnabrück, Germany

Certifications & licenses

Professional Scrum Master

Scrum.org

Certified Data Analyst (Microsoft Power BI Data Analyst)

Certified Data Strategy Consultant

datentreiber.de

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