Power Query Experts in Cologne
matched in minutes by AIHire experts who clean, combine and transform data across Excel, Power BI and Microsoft Fabric, with precise matching to vetted, available freelancers for fast project delivery.
Meet FRATCH Experts in Cologne, who have recently used Power Query
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
Fahad R.
Last position:
Data Science – Operations Optimization at Netto-marken
Project: Digitalization of Warehouse Processes | Building a Data Analytics Platform.
- Built a web-based workforce allocation system that digitized daily shift planning by matching worker expertise to operational zones, replacing manual coordination with a structured workflow adopted across the site, saving supervisors time on daily planning.
- Developed a real-time operational visibility dashboard giving supervisors a live view of task throughput and outstanding workload across warehouse zones throughout the day, helping reduce overtime and idle labour costs.
- Developed a slotting optimization solution to improve warehouse picking efficiency and reduce picking time per order, working directly with operations teams from concept through production deployment.
Technologies used: Python, Django, PostgreSQL, Pandas, NumPy, HTML, Java, JavaScript, Docker, Kubernetes, AWS, Power BI, GitHub Actions CI/CD, GitOps, Claude, OpenAI
Sebastian B.
Last position:
Management Consultant at Freelance
- Core-IT system assessment for a health insurance company
- Strategy development for a spectroscopy manufacturer
- Project management in the product development of a medical engineering manufacturer
- Process digitalization and development of technical interfaces for a telecommunication provider
Felix R.
Last position:
Interim Manager Logistics & Operations at AVIPROC
Interim management and operational project support in production logistics and operations.
Key areas:
- Stabilization of operational production and logistics processes
- Analysis and optimization of material flows and interfaces
- Improvement of machine and production utilization
- Identification and elimination of operational bottlenecks
- Development of pragmatic control and escalation solutions
- Optimization of warehouse, intralogistics, and supply processes
- Digitalization and automation of operational processes
- Development of transparent reporting and control solutions
- Collaboration with production, logistics, work preparation, and management
- Hands-on implementation of improvement measures during ongoing operations
Rüdiger T.
Last position:
Finance Director at PSG Germany GmbH, a Dover company
B2B pumps for chemicals, life sciences, semiconductors etc. Stabilization and optimization of the finance function, closing / budgeting / reporting / audits / SOX / PMI
Beshr A.
Last position:
System Administrator – HealthCare IT & Data Infrastructure at Cellitinnen Hospital Association
- Integration of medical modalities (including ultrasound) into the existing IT infrastructure (DICOM, HL7) – put into operation within the planned timeframe.
- Administration and optimization of PACS systems for efficient archiving and distribution of radiology image data across multiple locations.
- Ensuring consistent data quality and seamless interoperability in data exchange between HIS, RIS, and PACS.
- Close collaboration with medical staff to analyze and digitally optimize clinical workflows.
- Requirements management and test coordination when implementing clinical requirements in complex IT structures.
Thomas R.
Last position:
Power BI Consultant
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
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.
Discover over 15,000 top freelancers
Statistics of experts using Power Query
Aggregated from the professional profiles of matched freelancers.
Experience
18 years (Germany: 16 years)
Position duration
1 year (Germany: 3 years)
Positions per freelancer
15 (Germany: 10)
Top business areas
Information Technology, Business Intelligence, Project Management
Top industries
Information Technology, Transportation, Manufacturing
Certification focus areas
Information Technology, Business Intelligence, Project Management
Bachelor's degree or higher
88% (Germany: 96%)
Master's degree or higher
50% (Germany: 76%)
Doctorate
13% (Germany: 7%)
Certifications per freelancer
6 (Germany: 3)
Most common languages
German, English, Arabic
Speak two or more languages
100% (Germany: 96%)
Based on our profile pool as of 29 Oct 2026.
Daily rate distribution
The chart shows how the daily rates of experts in this technology in Cologne are distributed, based on recent contracts on our platform. Each bar covers a rate range — its height shows the share of experts charging within that range.
Average rates of experts in Cologne using Power Query
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 29 Oct 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
Power Query experts industry focus
See which industries our matched freelancers work in most often — every figure is calculated live from the freelancers on FRATCH.
- Information Technology (100%)
- Transportation (75%)
- Manufacturing (63%)
- Professional Services (63%)
- Retail (63%)
- Healthcare (50%)
- Telecommunication (50%)
- Aerospace and Defense (38%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
Data transformation
Power Query is Microsoft’s data preparation and transformation technology. It lets teams connect to files, databases, business systems and online sources, then clean and reshape information through repeatable steps. The same queries can support Excel workbooks, Power BI reports, Power Platform solutions and Microsoft Fabric workflows.
Core capabilities
Experts use the M language and Power Query Editor to create reliable data flows. They profile columns, handle missing values, merge datasets, pivot tables and define reusable parameters. Strong work keeps transformations readable, refreshable and aligned with the source systems that feed them.
- Connect Excel, CSV, SQL and cloud data sources
- Standardize fields, types and naming conventions
- Combine queries through joins, appends and custom functions
- Build refresh-ready models for reporting teams
Microsoft ecosystem
Power Query sits across Microsoft’s analytics ecosystem rather than operating as an isolated tool. Its work often connects with Power BI semantic models, Excel, Power Automate, SharePoint, Azure services and Microsoft Fabric. Professionals should understand authentication, gateways, privacy levels, refresh behavior and the differences between desktop and cloud execution.
When expertise matters
Companies bring in freelance specialists when manual spreadsheet work has become difficult to control or when reporting sources do not align. They may need a clean foundation for management dashboards, financial analysis, sales operations, supply chain reporting or regulated business processes. In Cologne, remote collaboration can work well for distributed teams, while German-language workshops may help when data owners and business users work locally.
- Replace fragile copy-and-paste routines
- Resolve refresh failures and source changes
- Prepare data for a Power BI rollout
- Document transformations for internal teams
Project deliverables
A Power Query engagement can produce source connections, transformation queries, custom functions, parameterized templates and documented refresh procedures. It may also include data quality rules, performance improvements and handover sessions. The right scope depends on source complexity, ownership of the data and how often the output must refresh.
Quality signals
Strong professionals clarify business definitions before writing transformations. They test edge cases, preserve source lineage and separate reusable logic from report-specific steps. Look for practical experience with the relevant connectors, M expressions, Power BI modeling and refresh operations, plus documentation that another specialist can maintain without guesswork.
Frequently asked questions
Quick answers to the questions that come up most around Power Query.
Power Query is used to connect, clean, combine and reshape data before analysis or reporting. It is common in Excel, Power BI, Power Platform and Microsoft Fabric, especially when information comes from several systems with inconsistent formats.
Power Query offers a visual, repeatable way to prepare data inside Microsoft tools, while SQL is usually stronger for transformations close to a database and Python offers broader programming flexibility. The best choice depends on source location, data volume, governance needs and the team’s existing skills.
Power Query work benefits from knowledge of Power BI data modeling, DAX, Excel, SQL and source-system structures. Experience with gateways, authentication, Microsoft Fabric and data quality practices is also valuable when queries must refresh reliably in shared environments.
Power Query projects with a few stable sources may suit a specialist who has handled similar transformations and can document the result clearly. Complex integrations, sensitive data or recurring refresh problems call for deeper experience with M, connector behavior, query performance and operational handover.
Power Query projects are often suitable for remote collaboration because source mapping, query reviews and testing can be handled through shared workspaces. On-site sessions in Cologne may still help with workshops, access coordination or discussions involving business users, and German-language communication can matter for local stakeholders.
Power Query may be a poor fit for highly complex application logic, continuous event processing or transformations that must run close to very large data stores. A specialist should assess whether SQL, a dedicated data integration service, Python or another tool better matches the workload.
Power Query work should be tested against known results and unusual inputs, not judged only by whether a report loads. Check whether steps are understandable, sources and assumptions are documented, refresh behavior is stable and the logic can be maintained when a column or source changes.
Power Query engagements can include connected queries, cleaned datasets, reusable functions, parameters, refresh instructions and documentation. Depending on the scope, the specialist may also support Power BI modeling, gateway setup, testing and knowledge transfer to the internal team.
The average hourly rate of freelancers in Cologne, Germany who have used Power Query in their recent projects is 115 €, which corresponds to a daily rate of about 919 € based on an 8-hour working day.
Of the freelancers in Cologne, Germany who have used Power Query in their recent projects, 88% hold at least a Bachelor's degree, 50% hold at least a Master's degree, and 13% hold a doctorate.
On average, freelancers in Cologne, Germany who have used Power Query in their recent projects have 18 years of professional experience, with a single engagement typically lasting around 1 year.
The most common languages among freelancers in Cologne, Germany who have used Power Query in their recent projects are German (100%), English (100%), and Arabic (13%).
The most common industries among freelancers in Cologne, Germany who have used Power Query in their recent projects are Information Technology (100%), Transportation (75%), and Manufacturing (63%).
The most common business areas among freelancers in Cologne, Germany who have used Power Query in their recent projects are Information Technology (100%), Business Intelligence (88%), and Project Management (88%).
Main locations of FRATCH Experts, who have recently used Power Query
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.
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Philipp Thomaschewski
FRATCH CEO
