DAX Expert in Cologne
in minutes from over 15,000 CVs with the power of AI matching.Work with specialists who design complex tabular data models, build high-performing Power BI dashboards, and optimize slow-running analytical queries. FRATCH connects you with vetted, available freelance professionals who translate raw business metrics into actionable intelligence.
Meet FRATCH Experts in Cologne, who have recently used DAX
Alexander B.
Last position:
Senior Data Engineer at RWE AG
Architected and maintained data products for renewable energy operations, covering wind turbine, grid-meter, and weather data. Built scalable ETL/ELT pipelines in Azure Databricks using Delta Lake (bronze/silver/gold layers) and processed data in various formats, including structured and semi-structured data. Contributed to a data quality framework supporting table and column documentation, outlier detection, and completeness metrics across all datasets within a data product. In addition, implemented a DORA KPI Databricks dashboard used across all data products. Optimized CI/CD processes in Azure DevOps to streamline deployment across development, test, and production environments.
Technology stack: Azure Databricks, PySpark, SQL, Delta Lake, Unity Catalog, Azure Data Lake, APIs, Dremio, Azure DevOps, YAML, Git, Databricks Workflows, Application Insights, Terraform, OpenAI API, Codex, LLM-assisted workflows
Yaroslav S.
Last position:
Senior Low-Code Consultant at Freelancer
Structured analysis and evaluation of business processes
Gathering, documenting, and prioritizing requirements
Creating business-friendly and technically executable process models
Use of Camunda tools
Deriving requirements and interfaces from BPMN diagrams
Coordination with stakeholders and business units
Translating business requirements into technical solution designs
Implementing efficient and tailored applications
Systematic collection, analysis, and documentation of requirements
Prioritizing and validating requirements in close collaboration with stakeholders
Alignment between business and development to ensure shared objectives
Creating use cases, user stories, and acceptance criteria
Continuous requirements and change management throughout the project lifecycle
Define project goals and create project plans
Delegate tasks and monitor project progress
Monitor budgets and inform stakeholders
Mendix: Architecture, development, and maintenance of custom applications (Microflows, Domain Model, Security, XPath)
Modeling Mendix workflows for process optimization
Develop scalable apps with Mendix including REST/SOAP integration with SAP, SQL, Azure & SharePoint
UI design for Mendix using Atlas UI, Fluent UI, HTML, CSS, JavaScript
Develop web & mobile apps with Mendix using agile methods (Scrum, Kanban)
Implement business logic with Mendix Microflows and Nanoflows
Performance optimization and architecture improvements for Mendix applications
Conduct Mendix training
Create technical documentation and best practices for Mendix
Coaching and mentoring for low-code development with Mendix
Rodion O.
Last position:
Founder, CTO & Managing Director at MYNR Product Mining GmbH
- Responsible for the architecture and development of an AI-native SaaS platform for industrial product portfolio management.
- Designed the modern data platform architecture on Azure for scalable analytics and enterprise data integration.
- Built enterprise data ingestion and transformation pipelines across complex industrial system landscapes.
- Developed graph-based representations of product structures and dependencies for analytical reasoning.
- Designed and implemented an agentic AI framework for AI-supported decision workflows.
- Built scalable analytical microservices and integrated reporting through modern BI technologies.
- Coordinated backend, AI, and frontend development across the MYNR platform stack.
Thomas R.
Last position:
BI Consultant and Power BI Developer at Plusnet GmbH
- In-depth forensics of old and new data sources
- Enhancing existing reports and creating new data analyses
- Data preparation from source systems and semantic models
- Azure DevOps integration
- Tools/Skills: MS-PowerBI, DAX, MS-Office 365, PowerQuery, M, PowerAutomate, Redmine, SharePoint, SQL (T-SQL, Oracle), MS Fabric
Vitali H.
Last position:
Power BI Expert at Media Agency
The project aims to migrate the company's existing Power BI Premium environment to Microsoft Fabric. This migration includes moving the existing data models, reports, and dashboards to the new platform to take advantage of the extended features and improved performance of Microsoft Fabric. The solution will be deployed in various regions worldwide to ensure a unified and consistent reporting and analytics environment for all locations.
Requirements analysis, migration planning, data migration, adapting reports and dashboards, testing and validation, training and support, deployment and monitoring, regional rollout.
Ronny H.
Last position:
Förderbank Deutschland
- Extraction and transformation of relevant data from the SAP system developed for the bank and consolidation into the existing reporting environment
- Integration of the data into the existing BI model (extending the star schema to a galaxy schema) for generating the funding committee report and the business development report
- Ensuring data quality
- Knowledge transfer to department staff (SAP, SQL database, Power Pivot, DAX)
Discover over 15,000 top freelancers
Statistics of experts using DAX
Aggregated from the professional profiles of matched freelancers.
Experience
15 years (Germany: 16 years)
Position duration
1.7 years (Germany: 2.9 years)
Positions per freelancer
12
Top business areas
Business Intelligence, Information Technology, Product Development
Top industries
Professional Services, Information Technology, Manufacturing
Certification focus areas
Information Technology, Business Intelligence, Project Management
Bachelor's degree or higher
80% (Germany: 97%)
Master's degree or higher
60% (Germany: 71%)
Certifications per freelancer
5 (Germany: 3)
Most common languages
German, English, Russian
Speak two or more languages
100% (Germany: 96%)
Based on our profile pool as of 19 Sep 2026.
Daily rate distribution
The chart shows how the daily rates of freelancers in this technology in Cologne are distributed, based on recent contracts on our platform. Each bar covers a rate range — its height shows how many freelancers charge within that range.
Average rates of experts in Cologne using DAX
Rates are based on recent contracts and do not include FRATCH margin.
The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.
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 19 Sep 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
DAX experts industry focus
See which industries our matched freelancers work in most often — every figure is calculated live from the freelancers on FRATCH.
- Professional Services (100%)
- Information Technology (83%)
- Manufacturing (50%)
- Education (33%)
- Energy (33%)
- Banking and Finance (33%)
- Healthcare (33%)
- Transportation (33%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
Advanced Data Modeling with DAX
Data Analysis Expressions is the specialized formula language used across Microsoft analytical tools. Specialists use it to solve complex data modeling challenges within Power BI, SQL Server Analysis Services, and Excel Power Pivot. It enables deep analytical capabilities that standard database queries cannot easily replicate.
Key Deliverables of DAX Professionals
- Creating dynamic time intelligence calculations for year-over-year comparisons.
- Designing optimized tabular models to handle large enterprise datasets.
- Implementing row-level security to restrict data access by user roles.
- Setting up complex calculation groups to reduce model redundancy.
The DAX Ecosystem and Performance Optimization
Writing functional formulas is only the beginning. True experts rely on specialized tools like DAX Studio and Tabular Editor to analyze query plans, define relationships, and format code. They possess a deep understanding of the VertiPaq storage engine, allowing them to optimize memory consumption and speed up slow report visuals.
When to Bring in External DAX Specialists
Internal business intelligence teams often struggle when reports become slow or data models grow too complex. Hiring an external professional brings immediate, specialized troubleshooting skills to resolve performance bottlenecks. They establish scalable modeling practices that your in-house team can easily maintain after the project ends.
Data Analytics in the Cologne Business Region
Companies in the Cologne area, from established insurance firms to fast-growing digital agencies, rely on accurate business intelligence to stay competitive. Local projects often require a hybrid working model, where specialists join on-site kick-offs in Cologne and complete the core modeling work remotely.
Distinguishing Senior DAX Experts
Top-tier specialists do not just write formulas; they understand the underlying star schema design. They know when to push calculations back to the ETL layer using Power Query or SQL rather than over-complicating the analytical layer. Their work results in clean, maintainable, and fast-loading dashboards.
Frequently asked questions
Not sure where to start with DAX? These answers cover the essentials.
DAX is designed to perform advanced calculations and data analysis on tabular models. It allows business analysts to create custom metrics, handle complex time-based comparisons, and build dynamic relationships between different data tables in Microsoft Power BI and Analysis Services.
While Power Query M is used for data extraction, transformation, and loading, DAX is utilized for data modeling and analytical calculations. You use Power Query to clean and prepare your data, whereas you write formulas in the analytical engine to aggregate and evaluate that data dynamically.
A proficient DAX specialist should have strong expertise in SQL, dimensional modeling, and Power BI administration. They must also be skilled in using performance-tuning tools like DAX Studio and Tabular Editor to debug complex measures.
Simple reports can be built by junior analysts, but optimizing large enterprise models requires a senior DAX professional. They understand the nuances of the VertiPaq engine, filter context, and row context, which are critical for preventing slow report performance.
Yes, most DAX consulting projects are delivered remotely, as data modeling and dashboard creation require minimal physical presence. However, some enterprises in the Cologne region prefer a hybrid model, starting with on-site workshops to define data requirements and security protocols.
The thriving logistics, media, and retail sectors in Cologne generate vast amounts of operational data that require sophisticated reporting. A DAX expert helps these businesses turn raw transactional records into clear, real-time executive dashboards.
While many international companies in Cologne accept English for technical roles, local mid-sized businesses often require German. A DAX specialist who speaks German can easily communicate with local business stakeholders to gather precise reporting requirements.
You can evaluate a DAX expert by reviewing their past dashboard designs and asking how they handle performance optimization. A skilled professional should be able to explain how they resolve circular dependencies and optimize filter context in complex calculations.
The average hourly rate of freelancers in Cologne, Germany who have used DAX in their recent projects is 99 €, which corresponds to a daily rate of about 790 € based on an 8-hour working day.
Of the freelancers in Cologne, Germany who have used DAX in their recent projects, 80% hold at least a Bachelor's degree and 60% hold at least a Master's degree.
On average, freelancers in Cologne, Germany who have used DAX in their recent projects have 15 years of professional experience, with a single engagement typically lasting around 1.7 years.
The most common languages among freelancers in Cologne, Germany who have used DAX in their recent projects are German (100%), English (100%), and Russian (33%).
The most common industries among freelancers in Cologne, Germany who have used DAX in their recent projects are Professional Services (100%), Information Technology (83%), and Manufacturing (50%).
The most common business areas among freelancers in Cologne, Germany who have used DAX in their recent projects are Business Intelligence (100%), Information Technology (100%), and Product Development (67%).
Main locations of FRATCH Experts, who have recently used DAX
Our freelancers and interim experts are at home across the DACH region — available on-site in the major business hubs or fully remote. Choose a location to discover matched specialists, local market insights and up-to-date availability.
Berlin Hamburg Munich 
Cologne Frankfurt Stuttgart Dusseldorf Leipzig Dortmund Essen Bremen Dresden Hanover Nuremberg 
Berlin 
Hamburg 
Munich 
Frankfurt 
Dusseldorf Request a free demo
Get in touch with the FRATCH team and we will get back to you within 4 hours.
Would you rather directly get in touch?
We always have the time for a call or email!
Philipp Thomaschewski
FRATCH CEO
