Willi Ziegenhagel - Data Analyst

Q: Where is Willi based?

Willi is based in Barsinghausen, Germany and prefers 100% remote projects.

Q: What languages does Willi speak?

Willi speaks the following languages: German (Native), English (Advanced), French (Elementary) .

Q: How many years of experience does Willi have?

Willi has at least 12 years of experience. During this time, Willi has worked in at least 8 different roles and for 3 different companies . The average length of individual experience is 1 year and 1 month . Note that Willi may not have shared all experience and actually has more experience.

Q: What is Willi's latest experience?

Willi's most recent position is Data Analyst .

Q: What companies has Willi worked for in recent years?

In recent years, Willi has worked for Kaiser X Labs GmbH .

Q: Which industries is Willi most experienced in?

Willi is most experienced in industries like Information Technology (IT) and Professional Services .

Q: Which business areas is Willi most experienced in?

Willi is most experienced in business areas like Business Intelligence , Information Technology (IT) , and Project Management . Willi also has some experience in Product Development , Quality Assurance (QA) , and Marketing .

Q: Which industries has Willi worked in recently?

Willi has recently worked in industries like Information Technology (IT) and Professional Services .

Q: Which business areas has Willi worked in recently?

Willi has recently worked in business areas like Business Intelligence , Information Technology (IT) , and Product Development .

Recommended expert

Barsinghausen, Germany

Experience

Sep 2023 - Present

2 years 7 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

Industries Experience

See where this freelancer has spent most of their professional time. Longer bars indicate deeper hands-on experience, while shorter ones reflect targeted or project-based work.

Experienced in Information Technology (10 years) and Professional Services (5.5 years).

Information Technology

Professional Services

Business Areas Experience

The graph below provides a cumulative view of the freelancer's experience across multiple business areas, calculated from completed and active engagements. It highlights the areas where the freelancer has most frequently contributed to planning, execution, and delivery of business outcomes.

Experienced in Business Intelligence (10.5 years), Information Technology (7 years), Project Management (3.5 years), Product Development (2 years), Quality Assurance (1.5 years), and Marketing (0.5 years).

Business Intelligence

Information Technology

Project Management

Product Development

Quality Assurance

Marketing

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

Profile

Created

November 2024

Last Update

May 2025

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Frequently asked questions

Do you have questions? Here you can find further information.

Where is Willi based?

Willi is based in Barsinghausen, Germany and prefers 100% remote projects.

What languages does Willi speak?

Willi speaks the following languages: German (Native), English (Advanced), French (Elementary).

How many years of experience does Willi have?

Willi has at least 12 years of experience. During this time, Willi has worked in at least 8 different roles and for 3 different companies. The average length of individual experience is 1 year and 1 month. Note that Willi may not have shared all experience and actually has more experience.

What roles would Willi be best suited for?

Based on recent experience, Willi would be well-suited for roles such as: Data Analyst, Dashboard Designer and Power BI Expert, Interim BI Manager & Product Owner.

What is Willi's latest experience?

Willi's most recent position is Data Analyst.

What companies has Willi worked for in recent years?

In recent years, Willi has worked for Kaiser X Labs GmbH.

Which industries is Willi most experienced in?

Willi is most experienced in industries like Information Technology (IT) and Professional Services.

Which business areas is Willi most experienced in?

Willi is most experienced in business areas like Business Intelligence, Information Technology (IT), and Project Management. Willi also has some experience in Product Development, Quality Assurance (QA), and Marketing.

Which industries has Willi worked in recently?

Willi has recently worked in industries like Information Technology (IT) and Professional Services.

Which business areas has Willi worked in recently?

Willi has recently worked in business areas like Business Intelligence, Information Technology (IT), and Product Development.

What is Willi's education?

Willi holds a Bachelor in Business Informatics from Hannover University of Applied Sciences.

Does Willi have any certificates?

Willi has 3 certificates. These include: Professional Scrum Master, Certified Data Analyst (Microsoft Power BI Data Analyst), and Certified Data Strategy Consultant.

What is the availability of Willi?

Willi is immediately available part-time for suitable projects.

What is the rate of Willi?

Willi's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.