Exasol Expert in Germany
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Meet FRATCH Experts in Germany, who have recently used Exasol
Serge Kalinin
Last position:
MLOps (machine learning operations) at REWE Digital GmbH
- It is like a startup within REWE, where we have to build a new forecasting system on Google Cloud Platform from the scratch. Although, officially my role is called MLOps, my actual tasks also include development of data processing pipelines (data engineering) and data scientists tasks such as feature engineering and model trainings.
- GCP: Terraform (tofu), Vertex AI (Kubeflow), Cloud Run, IAM, Google Cloud Storage, BigQuery, Artifact Registry
- Data engineering: Snowflake as the main data warehouse, Terraform, DBT for data model implementations
- CI/CD: GitLab. We have built a CI/CD pipeline that automates deployments of new releases up to production environment
Matthias Wähler
Last position:
Freelance Consultant Business Intelligence (Self-employed) at mw-consult.it
Data Engineering
Business Analyst
Consulting
2025 – present
Data Engineer & Architect
- Azure Data Factory
- Azure Databricks (PySpark)
- PowerBI Service
Lead developer for the further development of the Modern Data Warehouse, as well as Power BI reports and data models based on the ERP systems Amparex and EyeOffice. Focus on topics for the marketing department with data connection via API to Amplitude and Klaviyo with Python
- 2024 – present
Data Engineer & Architect
- SQL Server (T-SQL)
- SSIS (ETL)
- SSAS Tabular
- PowerBI Report Server
- Atlassian Jira & migration to Azure DevOps with GIT (KANBAN)
Development of Power BI reports and data models based on Infor LN ERP data after migration from Baan, including the underlying data structures with Microsoft SQL Server for further development of the Data Warehouse
Consulting for controlling on the specification of business requirements and development of reporting solutions
- 2025 – 06.2025
Data Engineer & Architect
- PowerBI Dataflows
- PowerBI Service
Cloud migration of the Data Warehouse, as well as Power BI reports and data models from Microsoft Dynamics BC 2021 to Microsoft Dynamics BC Cloud, including migration of the underlying data structures from Microsoft SQL Server to Power BI Dataflows
- 2022 – 06.2024 (ongoing support for data engineers)
Data Engineer & Architect
- SQL Server (T-SQL)
- SSIS (ETL) & BIML
- SSAS Tabular
- Azure DevOps with GIT (SCRUM)
Development of analytical models based on Microsoft Dynamics BC 2021 in combination with data from the company's own MariaDB database, including the setup of the underlying data structures with Microsoft SQL Server to build a Data Warehouse. Merging of the ERP systems BC 2021 and DATEV in the Data Warehouse
Consulting for business users on the specification of business requirements and coaching of developers for the development of reporting solutions
- 2022 – 08.2023
Business Analyst & Interim Manager
- PowerBI Service
- Azure Databricks (PySpark)
- Atlassian Jira (SCRUM)
Project management for reporting solution requirements, as well as development of Power BI reports and data models with data from Azure Databricks based on SAP R/3, Google Analytics, webshop and CRM with a business focus on customer, sales and marketing
- 2022 – 05.2022
Power BI Specialist
- PowerBI Service
- Azure DevOps with GIT (SCRUM)
Development of Power BI reports and data models based on data from Exasol with a business focus on assortment management in purchasing
- 2021 – present (ongoing support for existing customers)
Power BI Specialist & Data Engineer
- SQL Server (T-SQL)
- SSIS (ETL) & BIML
- PowerBI Service
- Azure DevOps with GIT (KANBAN)
- Azure Functions (Python)
Development of Power BI reports and data models based on abas ERP data, including the setup of the underlying data structures with Microsoft SQL Server to build a Data Warehouse.
Synchronization of customer data for Pipedrive CRM via Azure Functions with Python.
Consulting for controlling and management on agile project management, the specification of business requirements and development of reporting solutions
- 2021 – present (ongoing support for existing customers)
Data Engineer & Architect
- SQL Server (T-SQL)
- SSIS (ETL) & BIML
- SSAS Tabular
- Azure DevOps with GIT (SCRUM)
Development of analytical models based on Microsoft Dynamics 365 FO, CS & CRM in combination with Microsoft Dynamics AX 2012 R3, including the setup of the underlying data structures with Microsoft SQL Server to build a Data Warehouse
Concept for the migration of the SQL Server-based Data Warehouse to Microsoft Fabric with planned future implementation and temporary use of a hybrid data architecture for the introduction of Power BI Service during the migration phase
Consulting for business users on the specification of business requirements and development of reporting solutions
Matthias Löchner
Last position:
IT service provider
- Analysis of the data model for a DWH project with the Federal Network Agency
- Analysis of the data model and performance in Oracle
- Performance optimization in Oracle
- Adaptation of the schema model and expansion/optimization of dossiers
- Modeling of an internal finance DWH and development of reports for internal controlling
- Modeling of the stage, core, business, and data mart layers
- Definition of requirements for the ETL colleagues
- Replacement of the existing reporting tool Cubeware with PowerBI
- Building the semantic layer in PowerBI and development of reports
Moritz Kath
Last position:
Senior DevOps Engineer GCP at tedi GmbH & Co. KG
- Design and implementation of DevOps and CI/CD practices for data and analytics teams
- Introduction of infrastructure as code with Terraform (IaC)
- Setup and maintenance of GCP user and permission management with Terraform in multi-project environment
- Design and implementation of CI/CD pipelines with GitHub
- Leading and training developer team for the introduction of IaC and CI/CD practices
- Building and optimising database connectors with Apache Arrow for terabyte scale data extraction (Oracle, SAP)
- Optimising data lake storage and warehouse ingest
Kerstin Burgen
Last position:
Reporting and analytics for HR at Apobank
- Designing and implementing an interactive evaluation system for top executives to rate core competencies such as goal orientation, team culture, and strategic alignment.
- Integrating control mechanisms to enforce feedback limits and store evaluations in a central system to ensure data integrity.
- Optimizing data processing for personnel development by automating the merging of various information sources for form letters.
- Implementing technical data preparation and analysis for the annual compensation comparison in the financial sector.
- Developing automated processes for data preparation in Excel using Power Query, ensuring data integrity and anonymization according to data protection requirements.
- Automating personnel cost analysis by developing a solution to process data from the Paisy system into an SAP-compatible Excel file.
- Creating test cases, user documentation, and test plans for all developed systems.
- Technologies: Power Query, MS Office 2016 (Word, Excel, PowerPoint), Paisy, SAP, VBA.
Marco Weber
Last position:
Business Analyst / Product Owner at Passenger transport company
- Agile project flow (SAFe)
- Business analyst and acting product owner
- Further development of multiple components and services for an order entry validation
- Requirements management and business analysis for the functionalities to be implemented
- Project size: 98 project members
- Project environment: AWS, SQL database, Java
- Skills used: SAFe, business analysis, requirements analysis, conceptual design, product ownership, stakeholder management, process modeling
Gyan Prakash
Last position:
Senior DevOps and Cloud Architect at Bosch
- Architected and operated cloud-based data and ML platforms for autonomous driving and parking systems, supporting large-scale (multi PB scale) simulation and vehicle data ingestion.
- Implemented security, compliance, and governance standards across Azure subscriptions and cloud resources.
- Managed GitHub organizations and CI/CD pipelines to improve deployment reliability and developer productivity.
- Contributed to hiring and technical interviews as part of the recruitment panel.
Gabriele Schilling
Last position:
Founder and Managing Director at RS-Analytics GmbH
Klaus Ewers
Last position:
Exasolution DBA at Rechenzentrum Innsbruck
- Exasolution DBA server consulting and migration to version 8
- Analysis of SQL query performance and tuning
- Troubleshooting batch scripts
- Technologies: GitLab, EXACloud, EXAOperation, DBeaver, Control-M
Yenal Yavuz
Last position:
Shiny R Development at RadixITS Gbr
- Implementation and mapping of regulatory requirements (CSRD, ESRS) in Shiny dashboards and backend functionalities
- Design and development of data-driven modules in Shiny including ESG metrics and reporting templates
- Integration of data sources (SQL, SAP HANA, APIs, CSV/Excel) using DBI, odbc, httr and readr
- Creation of interactive visualizations with plotly, highcharter and DT (DataTables)
Torsten Glunde
Last position:
Datavault with Informatica on Oracle at SEFE
- Datavault modeling and performance improvements in Oracle.
- Requirements process with model-driven Datavault automation.
- Preparation of business requirements for the pricing database in the gas and electricity market.
- Sales performance based on Salesforce CRM.
- Tasks: design and development.
- Tools used: Informatica, Oracle, DBT, Docker, DataOps, Airflow Workflow, Python Ingestion, Gitlab CI.
Michael Köhler
Last position:
Expert in Data Warehousing and Business Intelligence at Freelance Consultant
Discover over 15,000 top freelancers
Statistics of experts using Exasol
Aggregated from the professional profiles of matched freelancers.
Experience
20 years
Position duration
2.7 years
Positions per freelancer
13
Top business areas
Business Intelligence, Information Technology, Project Management
Top industries
Information Technology, Banking and Finance, Professional Services
Certification focus areas
Information Technology, Project Management, Product Development
Bachelor's degree or higher
88%
Master's degree or higher
75%
Doctorate
13%
Certifications per freelancer
2
Most common languages
German, English, French
Speak two or more languages
75%
Based on our profile pool as of 30 Aug 2026.
Daily rate distribution
The chart shows how the daily rates of freelancers in this technology in Germany 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 Germany using Exasol
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 30 Aug 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
About the technology
High-Performance Data Warehousing
Exasol is an in-memory, column-oriented relational database management system designed specifically for analytics. Companies use this technology to run ultra-fast queries on massive data volumes, powering real-time business intelligence and data science workflows. Its massively parallel processing architecture allows organizations to analyze complex datasets without performance bottlenecks.
Core Engineering Deliverables
- Designing scalable data warehouse architectures and schemas
- Optimizing slow-running analytical SQL queries and database tuning
- Writing custom User Defined Functions in Python, R, or Java
- Building robust ETL and ELT data pipelines to ingest source data
- Integrating dashboards with tools like Tableau, Power BI, and Looker
Ecosystem and Integration Landscape
The technology integrates tightly with modern data stack components and cloud environments like AWS, Azure, and Google Cloud Platform. Specialists work with data integration platforms such as Talend, Matillion, and Apache Spark to stream data into the database. They also utilize virtualization features to query external data sources directly without moving them.
When to Onboard External Specialists
Organizations usually bring in external professionals when internal teams face query latency issues or migration hurdles. Migrating legacy data warehouses to this in-memory database requires specialized planning to avoid downtime. Freelance specialists provide the immediate technical depth needed to restructure databases, partition data, and train internal teams on best practices.
Attributes of Top-Tier Professionals
Strong specialists combine deep relational database knowledge with a mastery of analytical SQL and query execution plans. They understand how in-memory databases manage resources and can write efficient scripts for data transformation. Communication is also vital, as they must translate business requirements into technical database models.
Database Projects in Germany
Many enterprises in Germany rely on this high-performance database to handle sensitive financial and industrial data. Local projects often require professionals who understand strict European data privacy regulations and can work within secure on-premise or cloud environments. While remote work is common, many German companies prefer specialists who can join key architecture workshops on-site.
Frequently asked questions
Quick answers to the questions that come up most around Exasol.
Exasol is primarily used for high-performance data warehousing, ad-hoc analytics, and accelerated business intelligence reporting. Its in-memory, columnar architecture allows companies to run complex analytical queries on large datasets in sub-seconds.
While Snowflake is a cloud-native, SaaS-only data warehouse, Exasol offers extreme raw performance and can be deployed on-premise, in private clouds, or in public clouds. This deployment flexibility makes it highly popular for organizations with strict data residency rules, such as banks and manufacturers in Germany.
A qualified Exasol specialist must have advanced knowledge of SQL, query optimization, and data modeling. They should also be skilled in writing User Defined Functions in languages like Python or Lua, and have experience with ETL tools and BI integrations.
Yes, Exasol connects seamlessly with major business intelligence platforms such as Tableau, Power BI, Qlik, and Looker. Specialists use native drivers and optimized connectors to ensure dashboards load instantly for business decision-makers.
Most Exasol projects can be executed entirely remote, but some companies in Germany require hybrid models. Larger enterprises, particularly in the financial sector, often request occasional on-site visits for initial scoping workshops or architecture design sessions.
An experienced Exasol professional designs a structured migration path that minimizes system downtime during the transition. They schema-map the old database, translate legacy SQL dialects, and set up parallel testing to verify data consistency before the final cutover.
While many international projects use English as the primary language, some German organizations prefer an Exasol professional who speaks German fluently. This is especially true when collaborating closely with local business departments to gather requirements.
Security is a critical component, meaning an Exasol specialist must configure fine-grained access control, data encryption at rest and in transit, and row-level security. In Germany, they must ensure the entire setup aligns with GDPR regulations and corporate security baselines.
The average hourly rate of freelancers in Germany who have used Exasol in their recent projects is 106 €, which corresponds to a daily rate of about 848 € based on an 8-hour working day.
Of the freelancers in Germany who have used Exasol in their recent projects, 88% hold at least a Bachelor's degree, 75% hold at least a Master's degree, and 13% hold a doctorate.
On average, freelancers in Germany who have used Exasol in their recent projects have 20 years of professional experience, with a single engagement typically lasting around 2.7 years.
The most common languages among freelancers in Germany who have used Exasol in their recent projects are German (100%), English (75%), and French (25%).
The most common industries among freelancers in Germany who have used Exasol in their recent projects are Information Technology (83%), Banking and Finance (75%), and Professional Services (58%).
The most common business areas among freelancers in Germany who have used Exasol in their recent projects are Business Intelligence (100%), Information Technology (92%), and Project Management (83%).
Main locations of FRATCH Experts, who have recently used Exasol
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 Request a free demo
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Philipp Thomaschewski
FRATCH CEO
