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Thomas R.-BI Consultant and Power BI Developer

Thomas R. - BI Consultant and Power BI Developer - profile avatar
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Cologne, Germany

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Experience

Jun 2026 - Present

Power BI Consultant

Position summary
Power BI Consultant
Industries
Information Technology
Business areas
Business Intelligence
Information Technology
Project Management

Focus:

Consulting in reporting and project management for Power BI

Goal:

Creation of IT application dashboards for business areas

Activities:

  • Technical consulting and support in managing and coordinating an existing reporting setup
  • Structured collection, analysis, and preparation of business reporting requirements
  • Technical coordination with defined internal contacts
  • Design and optimization of Power BI reports to improve data analysis
  • Development of concepts and recommendations for the further development of an efficient and transparent reporting system
  • Support in the user-friendly visualization of relevant company KPIs as a basis for decision-making

Tools/Skills: MS-PowerBI, DAX, MS-Office 365, PowerQuery M, BCS

Apr 2026 - Present

Power BI Consultant

Position summary
Power BI Consultant
Industries
Information Technology
Professional Services
Business areas
Business Intelligence
Information Technology

Focus:

BI consulting and Power BI, architecture and calculations

Goal:

Interim support for staff absence, maintenance, and further development

Activities:

  • Support of the existing reporting system
  • Moving business logic into the preparation layer rather than the presentation layer
  • Consulting on systemic changes and the integration of data sources
  • General consulting on data architecture and data models
  • Documentation, transparency, and knowledge transfer

Tools/Skills: MS-PowerBI, DAX, MS-Office 365, PowerQuery M, Hamburger Software, Staffit Pro, DATEV

Jan 2026 - Feb 2026
Berlin, Germany

Power BI Consultant

Enertrag SE

Position summary
Power BI Consultant at Enertrag SE
Industries
Energy
Business areas
Business Intelligence
Information Technology

Renewable Energy

Focus:

BI consulting and Power BI / MS-Fabric / ETL development

Goal:

Development of a cloud solution in MS-Fabric

Activities:

  • Create transparency around data quality and define a reliable data architecture
  • Clear, well-founded definition of KPIs, reports, and visualizations
  • Development of high-performance, analytically meaningful data models based on the star schema or the bottom-up Kimball approach as a foundation for Power BI
  • Planning, implementation, testing, and deployment of RLS and OLS for the user group
  • Provision of meaningful, user-focused dashboards.
  • Data migration, transformation, and modeling (concept and development)
  • Visualization in PowerBI and creation, further development, and improvement of existing BI reports
  • Documentation, knowledge transfer, MS-SQL, Oracle, Power Query, Power BI

Tools/Skills: MS-PowerBI, DAX, MS-Office 365, PowerQuery M, PowerAutomate, SharePoint, SQL (MS-SQL, Oracle), MS Fabric, pySpark, KQL

Oct 2025 - Dec 2025

Power BI Specialist

Mainzer Datenfabrik

Position summary
Power BI Specialist at Mainzer Datenfabrik
Industries
Information Technology
Transportation
Business areas
Business Intelligence
Information Technology

Logistics and Transport

Focus:

BI consulting and Power BI / MS-Fabric development

Goal:

Development of a cloud solution in MS-Fabric

Activities:

  • Data migration, transformation, and modeling (concept and development)
  • Visualization in PowerBI and creation, further development, and improvement of existing BI reports.
  • Documentation, knowledge transfer, MS-SQL, Oracle, Power Query, Power BI

Tools/Skills: MS-PowerBI, DAX, MS-Office 365, PowerQuery M, PowerAutomate, SharePoint, SQL (MS-SQL, Oracle), MS Fabric

Apr 2025 - Jul 2025
Cologne, Germany

BI Consultant and Power BI Developer

Plusnet GmbH

Position summary
BI Consultant and Power BI Developer at Plusnet GmbH
Industries
Telecommunication
Business areas
Business Intelligence
Information Technology

Telecommunications

Focus:

BI consulting and Power BI development

Goal:

Expansion and optimization of existing Power BI reporting

Activities:

  • In-depth forensics of old and new data sources
  • Further development of existing reports and creation of new data analyses
  • Data preparation (star schema) from source systems and semantic models
  • Integration of RLS to restrict data visibility for users outside the department
  • Integration of Azure DevOps

Tools/Skills: MS-PowerBI, DAX, MS-Office 365, PowerQuery, M, PowerAutomate, Redmine, SharePoint, SQL (T-SQL, Oracle), MS Fabric

Apr 2025 - Apr 2025

Business Analyst, BI Consultant and Power BI Developer

audioprotect AG

Position summary
Business Analyst, BI Consultant and Power BI Developer at audioprotect AG
Business areas
Business Intelligence
Information Technology
Marketing
Sales

PPE Personal Protective Equipment

Focus:

Conducting a sales potential analysis for Switzerland

Objective:

Identifying sales weaknesses and sales controlling

Activities:

  • Tracking changes in the assignment of localities to political municipalities (SCD2)
  • Researching, modeling, preparing and calculating potential data
  • Geographical allocation / cleansing of the customer base
  • Aggregating and regionalizing sales
  • Generating regional sales territories (routing, based on customer and potential shares, etc.)
  • Cartographic and tabular presentation of results, result documentation
  • Deriving recommended measures to increase market penetration

Tools/Skills: MS-PowerBI, Power Query, M, DAX, Jet-SQL (MS-Access), GfK RegioGraph

Mar 2025 - Apr 2025

Business Analyst, BI Consultant and Power BI Developer

elacin GmbH

Position summary
Business Analyst, BI Consultant and Power BI Developer at elacin GmbH
Industries
Manufacturing
Business areas
Business Intelligence
Information Technology
Sales

PPE Personal Protective Equipment

Focus:

Conducting a sales potential analysis for Germany

Objective:

Identifying sales weaknesses and sales controlling

Activities:

  • Researching, modeling, preparing and calculating potential data
  • Geographical allocation / cleansing of the customer base
  • Aggregating and regionalizing sales
  • Generating regional sales territories (routing, based on customer and potential shares, etc.)
  • Cartographic and tabular presentation of results, result documentation
  • Deriving recommended measures to increase market penetration

Tools/Skills: MS-PowerBI, Power Query, M, DAX, M, Jet-SQL (MS-Access), GfK RegioGraph

Jan 2024 - Jun 2024
Worms, Germany

MS Power BI / MS SQL Developer

EWR AG

Position summary
MS Power BI / MS SQL Developer at EWR AG
Industries
Energy
Business areas
Business Intelligence
Information Technology

Energy Sector

Focus:

MS Power BI / MS SQL development

Objective:

Building a reporting platform based on Microsoft Power BI

Activities:

  • Designing use cases with the specialist departments
  • Developing performance-optimized dashboards
  • Analyzing the usability of existing dashboards and optimizing them
  • Structuring reporting requirements
  • Providing advice outside the role but related to data protection law on the use of personal data with regard to identifiability, including
  • Restricting data visibility according to RLS and OLS
  • Further developing the central data warehouse architecture (MS Fabric)
  • Creating semantic models based on star schema approaches
  • Creating SQL queries and reports
  • Designing and developing analytical databases
  • System documentation

Tools/Skills: MS-PowerBI, DAX, MS-Office 365, PowerQuery, M, MS-SQL-Server, SSIS, SSRS, PowerAutomate, Microsoft Fabric

Apr 2022 - Sep 2023
Cologne, Germany

BI Consultant and Power BI Developer

Plusnet GmbH

Position summary
BI Consultant and Power BI Developer at Plusnet GmbH
Industries
Telecommunication
Business areas
Business Intelligence
Information Technology

Telecommunications

Focus:

BI consulting and Power BI development

Objective:

Building a reporting platform with Microsoft Power BI

Activities:

  • Providing reports, dashboards and analyses
  • Further developing existing reports and creating new data analyses
  • Migrating existing reports to Power BI
  • Creating semantic models and datasets according to the star schema
  • Preparing data in accordance with data protection requirements for HR/Jus and internal training on handling personal data
  • Setting up RLS for data visibility when using data from HR
  • NPS, target group selection, evaluation

Tools/Skills: MS-PowerBI, DAX, MS-Office 365, PowerQuery, M, PowerAutomate, Confluence, SharePoint, SQL (MariaDB, MySQL, PostgreSQL, Oracle)

Sep 2021 - Dec 2021
Bonn, Germany

BI Consultant and Power BI Developer

Deutsche Post

Position summary
BI Consultant and Power BI Developer at Deutsche Post
Industries
Transportation
Business areas
Business Intelligence
Information Technology

Logistics

Focus:

BI consulting and Power BI development

Objective:

Proof of Concept (PoC) for a Power BI reporting platform

Activities:

  • Identifying relevant data sources and stakeholders
  • Designing consolidation logic and data design
  • Developing dashboards and interactive visualizations
  • Implementing the reporting structure in compliance with data protection requirements

Tools/Skills: MS-Office 2013, SQL-Server 2019, MDX, M, DAX, T-SQL, PowerBI, SharePoint, SSIS, SSAS, SSRS

Nov 2018 - Apr 2021
Düsseldorf, Germany

External BI Consultant

L’Oréal Deutschland

Position summary
External BI Consultant at L’Oréal Deutschland
Industries
Cosmetics
Business areas
Business Intelligence
Information Technology

Cosmetics industry

Focus:

Data quality assurance, ETL/CUBE loading procedures, reporting

Goal:

Migration from SAP BW to Microsoft BI, ensuring data quality

Responsibilities:

  • Monitoring ETL processes, test and validation procedures
  • Developing new CUBE loads for the D-A-CH region
  • Reporting with MS-Excel, SSRS and Power BI
  • Creating datasets/semantic models based on star schema for division-specific BI teams
  • Authorization management (Active Directory)

Tools/Skills: MS-Office 2019/365, SQL-Server, VBA, MDX, M, DAX, T-SQL, PowerBI, SharePoint

Jul 2018 - Sep 2018
Bonn, Germany

VBA Developer and MS-Office Developer

DHL

Position summary
VBA Developer and MS-Office Developer at DHL
Industries
Transportation
Business areas
Information Technology
Product Development

Logistics

Focus:

Development of an HR reporting tool

Goal:

Development of an Excel-based processing tool for maintaining master data

Responsibilities:

  • Connecting SharePoint data
  • Developing plausibility checks and validation procedures
  • User training and coaching

Tools/Skills: MS-Excel, VBA, SharePoint

Jun 2018 - Sep 2018
Duisburg, Germany

MS-Access and VBA Developer

Deutsche Bahn

Position summary
MS-Access and VBA Developer at Deutsche Bahn
Industries
Transportation
Business areas
Information Technology

Logistics

Focus:

Reporting & database adjustments

Goal:

Improvement of Excel reporting and Access database

Responsibilities:

  • Development of VBA and SQL procedures
  • Rollout and adjustments

Tools/Skills: MS-Excel 2010, MS-Access 2010, PL/2 AS400, VBA

Oct 2017 - Dec 2017
Essen, Germany

SQL, VBA and MS-Access Developer

ISTA

Position summary
SQL, VBA and MS-Access Developer at ISTA
Industries
Real Estate
Business areas
Information Technology
Marketing
Quality Assurance

Real estate services

Focus:

Campaign management, selection, quality assurance, migrations

Goal:

Providing data for campaign planning from various source systems, data reconciliation, quality checks, data corrections, knowledge transfer

Responsibilities:

  • Data imports and exports from source to target systems
  • Procedural data processing
  • Ad hoc selections
  • Further development of campaign tools
  • Support with the migration from the parallel Office environment to QlikSense
  • Development of (semi-)automated correction processes and tools for incorrectly captured data.

Tools / Skills: MS-Access 2003/2013, MS-Dynamix, MS-SQL-Server, T-SQL, MS-Excel, VBA

Sep 2016 - Sep 2018
Moers, Germany

External BI Consultant

MVZ

Position summary
External BI Consultant at MVZ
Industries
Healthcare
Business areas
Business Intelligence
Marketing

Ophthalmic care

Focus:

Regional potential analyses for an operational ophthalmology center on the Lower Rhine

Goals:

Expansion of the surgical services, estimation of market coverage

Responsibilities:

  • Derivation / validation of market potential, research (DeStatis, GfK, mb-research)
  • Data preparation, imports, calculations and reporting.
  • Visualization with desktop mapping software RegioGraph
  • Reporting, address research and validation (established physicians), geocoding
  • Competitive environment

Tools / Skills: Data storage with MS-Access, visualization with RegioGraph, reporting with MS-Excel

Feb 2016 - Sep 2018
Hamburg, Germany

MS Access and VBA Developer

Philips

Position summary
MS Access and VBA Developer at Philips
Industries
Manufacturing
Retail
Business areas
Business Intelligence
Information Technology

ECG Electronic Consumer Goods

Focus:

Reporting and consulting on field consulting and merchandising assignments (FB/MD) for ECG manufacturers

Objectives:

Gaining insights into the quality of FB/MD assignments in stores by analyzing the additional sales uplift generated by these assignments, FB/MD classification

Activities:

  • Data imports and exports from source to target systems
  • Procedural data preparation
  • Ad hoc analyses
  • Further development of reporting tools (infrastructure, content, KPIs, insights)
  • Migration of the Office environment to MS-SQL-Server
  • Introduction of SSRS and Power BI to standardize reporting
  • Measuring sales support measures in terms of the markup generated

Tools / Skills: MS-SQL-Server, T-SQL, SSIS, ADO-DB via MS-Access / MS-Excel, VBA, pivot reporting with MS-Excel, Power BI

Feb 2016 - Aug 2017
Dortmund, Germany

SQL and MS Access Developer

Inlingua

Position summary
SQL and MS Access Developer at Inlingua
Industries
Education
Business areas
Customer Service
Information Technology

Educational institution

Focus:

Maintenance and ensuring the functionality of databases

Objectives:

Taking over the existing database environment after the death of the previous provider

Activities:

  • Maintenance, assistance, user support
  • Integration of new tasks and procedures for third-party forms
  • Definition of permissions, stored procedure definition
  • Automation of exam registrations with BAMF

Tools / Skills MS-SQL-Server, MS-Access 2007 with ADP connection, T-SQL

Dec 2015 - Dec 2015

Customer classification, location analysis

Position summary
Customer classification, location analysis
Industries
Healthcare
Business areas
Marketing

Medical aids (focus hearing)

Apr 2015 - May 2015

DWH design, ETL processes, reporting

Position summary
DWH design, ETL processes, reporting
Business areas
Information Technology

Crafts

Jan 2015 - Dec 2017

Process definition for online surveys, automated analyses

Mercuri

Position summary
Process definition for online surveys, automated analyses at Mercuri
Industries
Professional Services
Business areas
Research and Development

Management consulting

Jan 2015 - Apr 2015

Change Management, Sales Consulting

Ferchau

Position summary
Change Management, Sales Consulting at Ferchau
Industries
Professional Services
Business areas
Human Resources
Sales

Recruitment

Dec 2014 - Jan 2015

Planning a Customer and Order Database

Position summary
Planning a Customer and Order Database
Industries
Healthcare
Business areas
Information Technology

Veterinary Medical Laboratory

Jun 2014 - Dec 2014

Automated Documentation Processes

Siemens

Position summary
Automated Documentation Processes at Siemens
Industries
Manufacturing

Mechanical Engineering

Jan 2013 - Dec 2014

Various BI, CRM, and Reporting Projects

Position summary
Various BI, CRM, and Reporting Projects
Business areas
Business Intelligence

Various Industries

Jan 2013 - Dec 2014

BI Analysis Project for National Sales

Toshiba

Position summary
BI Analysis Project for National Sales at Toshiba
Industries
Manufacturing
Business areas
Business Intelligence

Consumer Electronics

Jan 2012 - Dec 2013

IT consulting and data integration

EON

Position summary
IT consulting and data integration at EON
Industries
Utilities
Business areas
Information Technology

Energy industry

Jan 2011 - Dec 2012

Development of information platform for sales and marketing

LanXess

Position summary
Development of information platform for sales and marketing at LanXess
Industries
Chemical
Business areas
Information Technology

Industry

Jan 2010 - Dec 2011

BI and CRM solutions for hospital management

Position summary
BI and CRM solutions for hospital management
Industries
Healthcare
Business areas
Business Intelligence

Healthcare

Jan 2005 - Present

IT Consultant

Position summary
IT Consultant
Industries
Professional Services
Business areas
Information Technology

Self-employed IT consultant since 2005

Jan 2004 - Dec 2005

Supply Chain Manager

Zassenhaus GmbH

Position summary
Supply Chain Manager at Zassenhaus GmbH
Industries
Manufacturing
Business areas
Supply Chain Management
Jan 1998 - Dec 2002

Senior Consultant

KM-Consultants

Position summary
Senior Consultant at KM-Consultants
Industries
Professional Services
Jan 1986 - Dec 1988

Wholesale and Foreign Trade Merchant

Feinpapier

Position summary
Wholesale and Foreign Trade Merchant at Feinpapier
Business areas
Logistics
Procurement
Sales
Jan 1984 - Dec 1985

OG d. R.

Bundeswehr

Position summary
OG d. R. at Bundeswehr
Industries
Aerospace and Defense

Industry experience

See where this freelancer has spent most of their professional time.

Experienced in Professional Services, Manufacturing, Healthcare, Cosmetics, Retail, and Utilities.

Professional Services
Manufacturing
Healthcare
Cosmetics
Retail
Utilities
Profile match chart

Business area experience

See which departments and functions this freelancer has contributed to most.

Experienced in Information Technology, Business Intelligence, Sales, Research and Development, Logistics, and Procurement.

Information Technology
Business Intelligence
Sales
Research and Development
Logistics
Procurement
Profile match chart

Summary

  • Focus on Business Intelligence (BI), data analysis, reporting, database development.
  • Self-employed IT consultant since 2005

Languages

German
Native
English
Advanced

Education

Oct 1986 - Jun 1988

Groß- und Außenhandelskaufmann, Feinpapier

Oct 1975 - Jun 1984

Abitur

Wirtschaftswissenschaften (VWL, Ökonometrie, Statistik)

Certifications & licenses

AI Agent with OpenAI

Coursera

Claude AI für Fortgeschrittene

LinkedIn Learning

Claude Cowork

LinkedIn Learning

Claude Vibe Coding

LinkedIn Learning

Künstliche Intelligenz für Cybersicherheit

LinkedIn Learning

MS Certified: Fabric Analytic Engineer Associate

Microsoft, Pearson Vue

n8n: KI-Agenten per Text und Sprache steuern

LinkedIn Learning

Datenanalyse mit KI

LinkedIn Learning

EU AI Act Artikel 4: KI-Kompetenz im Unternehmen

LinkedIn Learning

Generative AI Leader

Google Learning

IT-Sicherheit: Governance, Risk und Compliance

LinkedIn Learning

Informationssicherheit Grundlagen

LinkedIn Learning

KI für die Leitungsebene

LinkedIn Learning

KI-Agenten mit n8n erstellen

LinkedIn Learning

Power BI mit Python

LinkedIn Learning

Power BI mit R

LinkedIn Learning

Python: Datenanalyse mit Pandas

LinkedIn Learning

Python: Datenvisualisierung mit Matplotlib

LinkedIn Learning

Zeitreihenanalysen und Prognosen mit Python

LinkedIn Learning

Statistics

Experience

Total positions 33
Experience in Professional Services 27 y
Avg length 1 y 10 m
Longest experience 21 y 10 m

Global experience

Countries worked in 1 (Germany)
Primary country Germany

Expertise

Recent roles Power BI Consultant, Power BI Specialist, BI Consultant and Power BI Developer
Main industries Professional Services, Manufacturing, Healthcare
Main business areas Information Technology, Business Intelligence, Sales

Qualifications

Certifications earned 22
Member since
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Frequently asked questions

Have questions? Find more information here.

Thomas is based in Cologne, Germany and prefers 100% remote projects.

Thomas speaks the following languages: German (Native), English (Advanced).

Thomas has at least 33 years of experience. During this time, Thomas has worked in at least 27 different roles and for 24 different companies. The average length of individual experience is 1 year. Note that Thomas may not have shared all experience and actually has more experience.

Based on recent experience, Thomas would be well-suited for roles such as: Power BI Consultant, Power BI Specialist, BI Consultant and Power BI Developer.

Thomas's most recent position is Power BI Consultant.

In recent years, Thomas has worked for Enertrag SE, Mainzer Datenfabrik, Plusnet GmbH, audioprotect AG, and elacin GmbH.

Thomas is most experienced in industries like Professional Services, Manufacturing, and Healthcare. Thomas also has some experience in Retail, Cosmetics, and Utilities.

Thomas is most experienced in business areas like Information Technology, Business Intelligence, and Sales. Thomas also has some experience in Research and Development, Logistics, and Procurement.

Thomas has recently worked in industries like Professional Services, Telecommunication, and Information Technology.

Thomas has recently worked in business areas like Information Technology, Business Intelligence, and Project Management.

Thomas attended education in Groß- und Außenhandelskaufmann, Feinpapier.

Thomas has 22 certificates. Among them, these include: AI Agent with OpenAI, Claude AI für Fortgeschrittene, and Claude Cowork.

The availability of Thomas needs to be confirmed.

Daily rate distribution

0% 25% 50% 75% 100%
20% of experts charge less than €720 per day.
20% of experts charge between €720 and €800 per day.
20% of experts charge between €800 and €880 per day.
10% of experts charge between €880 and €960 per day.
30% of experts charge €960 or more per day.
<€720 €720-​800 €800-​880 €880-​960 €960+

The rates shown represent the typical market range for freelancers in this position based on recent contracts on our platform.

Average rates for similar positions

Rates are based on recent contracts and do not include FRATCH margin.

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Daily rate avg. 828 €

The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.

1000
750
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Rate comparison chart
Median rate 812 €

The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.

Calculated based on our freelancers’ daily rates as of 5 Nov 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.