erwin Data Modeler Experts in Germany
for trusted data models, matched in minutes with vetted specialistsHire experts who design enterprise data models, maintain logical and physical schemas, and connect governance requirements with database platforms. FRATCH matches you quickly and precisely with vetted, available freelancers for focused delivery.
Meet FRATCH Experts in Germany, who have recently used erwin Data Modeler
Umut G.
Last position:
Data Architect at BA Technology
I am an experienced data engineer specializing in end‑to‑end data integration, cloud DWH architectures, and high‑quality, governed data products.
I delivered following projects and engagements as a freelancer.
- Data Migration of CRM System for AL-FA Objekt Service Gmbh
- Microsoft Software Resales Partnership
I am looking for freelance roles like: Freelance Data Engineer Cloud Data Warehouse Architect Data Modeling & Architecture Consultant MDM & Data Governance Specialist BI & Analytics Developer
Technical Focus Areas
- Data Engineering & Integration: SQL Server/SSIS, Informatica PowerCenter/IDQ, Talend, Kafka, Azure Data Factory – Delta/CDC/ELT patterns, robust pipelines, monitoring/recovery, data lineage & impact analysis, medallion architecture Bronze/Silver/Gold layers
- DWH & Cloud: Azure SQL / Data Lake / Synapse, AWS Redshift/S3, on‑prem SQL/Oracle – scalable data marts with a strong cost/benefit focus.
- Data Modeling: Atomic (Inmon) and Dimensional (Kimball), Data Vault (Linstedt), Domain‑Driven Design, clear lineage & contracts.
- MDM & Governance: Informatica MDM, IBM MDM, stewardship processes, data quality rules, survivorship/XREF, catalog/glossary, SIF/BES/REST publication.
- Analytics/BI: Power BI, SSAS, Cognos – business‑ready, maintainable data products.
Yusuf D.
Last position:
Senior Project Management Transformation & Data at BG-PREVENT
A nationwide service provider for occupational medicine, occupational safety and health management, focusing on prevention, health and digital transformation.
- Role: Responsible for establishing and further developing professional project portfolio management in the Digital Transformation & Data area. Managing and supporting strategic IT and transformation projects, as well as supporting the introduction and establishment of project management standards, methods and governance structures.
Key areas:
- Establishment and further development of IT project portfolio management
- Analysis and structuring of business and technical requirements
- Management and coordination of cross-functional IT initiatives
- Stakeholder management at department, management and service provider level
- Introduction and further development of project management methods and tools (including Jira, Confluence, MS Planner)
- Preparation of decision-making documents, target visions and implementation concepts in the context of digital transformation
- Management and coordination of transformation, digitalization and organizational projects
- Preparation of decision templates and management documents for executive committees
- Conducting workshops and stakeholder management with departments and IT teams
- Definition of requirements for dashboards, reporting and KPI management
- Participation in the Wissenskompass project (requirements analysis and MVP concept)
- Analysis and evaluation of AI support opportunities in Knowledge Management
- Investigation of AI use cases to improve knowledge provision and use
- Consideration of AI requirements as part of the Wissenskompass concept
- Coordination with strategic departments to further develop project management standards
- Introduction, configuration and training for Microsoft Planner to support project and task management
- Conducting user training and supporting employees in the introduction of new ways of working and tools
Hans-Dieter G.
Last position:
Training as an AI Expert
I continuously expand my expertise in AI and automation. I work with ChatGPT, OpenAI, Manus, Gemini, MS CoPilot, APIs, LangChain, Hugging Face, Manus, TensorFlow, and Auto-GPT, as well as Python-based ML frameworks and MLOps tools, to intelligently transform traditional software development, analysis, and testing processes.
Birgit S.
Last position:
Business Analyst / Requirements Engineer / Tester at BMW
Topics:
- Further development of the CRM system NKAM and technical separation of “direct” and “indirect” sales
- Redesign of the discount management area and outsourcing to another system.
- Designing numerous improvements on the wholesale side to reduce manual effort down to the level of user stories.
Monika T.
Last position:
Senior ETL Lead at Takeda GmbH
- Led design, development, and deployment of data solutions supporting a major pharma acquisition for Takeda Pharmaceutical Company, delivering transparency reporting systems across Azure,Databricks (Python and Shell Scripting) platforms.
- Owned,Designed and developed scalable ELT pipelines to process Customer and Product data using Azure, complex SQL, Databricks, and shell scripting, enabling efficient data integration and processing across multiple sources including job orchestration and workflow automation.
- Implemented performance optimization techniques (query tuning, parallelism, workload optimization), improving system efficiency and processing time.
- Applied strong analytical and problem-solving skills to assess technical solutions and support business requirements for compliance and transparency reporting.
- Designed scalable data foundations suitable for downstream analytics and AI workloads.
- Led data quality initiatives by assessing multiple source data, defining quality metrics, and establishing processes for monitoring and continuous improvement.
Ludo P.
Last position:
Senior Consultant at Insurance
- DWH modernization
- Migration from Informatica PowerCenter to IDMC/CDI
- Migration from IBM DB2 to Databricks
Technologies: Informatica IDMC, Databricks
Rainer L.
Last position:
Senior IT Consultant, Senior Software Architect, Senior Software Developer, Senior DevOps Engineer at Techniker Krankenkasse
Automation of the database major / minor releases for the TKeasy project
Concept for database major / minor release automation
Assessment of the current state
Evaluation of Redgate Flyway functionalities
Concept development
Products: Redgate Flyway, GitHub, Quest, Erwin Data Modeller, Oracle, Atlassian Jira, Atlassian Confluence
Knowledge: Docker, Continuous Delivery, Continuous Integration, Redgate Flyway, Major Releases, Minor Releases
Alex O.
Last position:
Contractor at Telefonica Germany GmbH & Co. OHG
- Data-analysis, Preparation, gathering and coordination of business requirements for retrieval of monthly- and long term (CLV – relevant) cost- and revenue-components per contract for a customer–base–grouping project (HUB–Project) for B2C-Postpaid-Controlling
- Concept and Implementation of cost- and revenue-KPIs calculation and corresponding CLV–reports (Oracle, Perl, SVN, MS SQL Server, MS Power BI, Serviceware Performance Analytics)
- Operational support of the HUB-Project – various ad-hoc reports, deployments, job-scheduling etc. (Oracle, SVN, BICSuite–Scheduler, DWSODA etc.)
- Analysis, implementation, retrieval and reporting of various physical and financial KPIs for B2P-Prepaid Business on an existing data-mart (Oracle, Perl)
Vladimir F.
Last position:
IT Consultant at ITZBund
- ITSM consulting, analysis and optimization of IT capacity with BMC TSCO / BMC Helix
- Drafting "Governance guidelines for operational capacity management"
Christiane N.
Last position:
Management Consultant at Christiane Neher Management Consulting
Large Insurance Company – Consultant Wiesbaden: Consulting support for the introduction of an integrated planning and performance management framework (operational, financial, customer) to enhance customer-centric transparency, decision-making quality, and steering capabilities across all lines of business within an insurance organization:
- Analysis of existing processes, reports, KPIs, and KPI calculation methodologies
- Design and introduction of new, standardized customer KPIs (gross/net), as well as key steering metrics with consistent linkage across all lines of business
- Recalculation, validation, and plausibility checks of KPIs based on existing and newly integrated data sources
- Conceptual support for the development of an integrated reporting and performance management setup
- Execution of customer insights analyses to identify patterns and anomalies within customer data clusters
Large retail company – Consultant in Karlsruhe: Advisory services for the setup and step-by-step implementation of an internationally deployable RELEX solution in the supply chain management environment:
- Advising overall and sub-project management on methodology, project setup and steering (e.g. agile approach, Jira configuration, RELEX phases, Jira Structure PPM)
- Strategic-operational consulting for the introduction of RELEX including best practices
- Support in defining overarching goals and requirements (2-year target picture)
- Guidance in scoping a relevant supply chain network segment for the project
- Development of a roadmap for iterative, incremental RELEX setup and rollout
- Assessment of project dependencies (interfaces, configurations, etc.)
- Advice on prioritized implementation of business requirements and data interfaces
- Support in test planning (data validation, system testing, UAT)
- Consulting on internationalization, change management, training, and knowledge transfer
- Stakeholder advisory and alignment activities between the client, implementation partner, and RELEX
Insurance company – Management Consultant in Munich: Analysis, consulting and support for the optimization of a large-scale business and IT transformation. Focus on strategically important programs and modernization projects in the area of Managed Services Operations and processes:
- Review of project plans and deliverables; analysis of programs and projects (e.g. cloud approach, process standardization, system integration, roadmaps)
- Identification of technical, functional and personnel risks and challenges; development of content-related measures and alternative solutions
- Proposal of quality improvements for program and modernization efforts
- Sparring partner and professional, technical, structural and organizational consulting for project and program management
Large retail group – Management Consultant & Stream Lead in Cologne: Consulting, process, project and product management for the introduction and implementation of a large strategic program in the field of advanced analytics, assortment and space management:
- Setup, test and rollout of a new space planning, automation and optimization product based on the existing cluster-based merchandising approach
- Definition and setup of new processes and transformation and change management measures for the new store-specific merchandising approach
- Collaboration with Advanced Analytics and IT (internal and external) for software implementations, automations, extensions and interfaces
- MVP approach and piloting in phases with gradual rollout (pilot with 80 stores, region with 500 stores, national level with 4000 stores)
Large retail company – Agile Coach & Change Agent in Cologne: Agile coach, OKR master and facilitator for the introduction of the OKR approach in a large strategic digitization program for retail stores:
- Coaching of the core team with topic managers and team leads
- Introduction to the OKR topic and setup of the OKR cycle
- Establishment of the OKR approach in teams and on a cross-team level
Delivery and logistics company – Management Consultant in United Kingdom: Consulting and coaching in the restructuring of the Data Analytics department:
- Analysis of current challenges
- Definition of overarching goals
- Development of a proposal for a new team structure
- Identification of required competencies, skills and responsibilities
- Advisory and alignment on communication and change management strategy
Peter N.
Last position:
Pilot testing AI tools & sabbatical for house renovation
- Pilot testing local AI environments to explore local AI use cases and cloud-based AI solutions
- Evaluation of AI tools and techniques
- Use of local AI tools with own data sovereignty
- Prompt engineering
- Creation of example environments for speech-to-text, text-to-speech, text-to-image, text-to-video, and image-to-video
Tools: Grok, Perplexity, ChatGPT, Elevenlabs, Github, Ollama, HuggingFace, Open WebUI, Faster Whisper, LibreTranslate, WSL, Docker Desktop, Shotcut, Audacity, Sound eXchange, Ffmpeg, Coqui TTS, Pinokio, Stable Diffusion Web UI, ComfyUI, OWL, Void Editor
Ulm P.
Last position:
DataStage ETL Expert at ING Bank
- Datastage 11.7, dbt, Oracle 19, Python 3.12 / PySpark 3.5, Azure GitHub, Azure DevOps, Automic
- Development of migration jobs to transfer data from the collection DWH to the new Risk Mart, as well as development of ETL pipelines to migrate historical data from the old Mart to the new Risk Mart.
- Storage of the silver layer on Hadoop and the gold layer in Oracle.
- Translation of DataStage jobs into dbt to publish reporting data in Google Cloud to a PostgreSQL database.
- Creation and optimization of complex SQL queries for data extraction from a data vault, taking into account historical data in the point-in-time tables.
- Creation of Oracle table definitions (DDL) and adjustment of existing stored procedures.
- Versioning changes in GitHub and deployment via the CI/CD portal.
- Refactoring long-running DataStage jobs into Python using PySpark to reduce server load.
- Migration of SAS scripts to PL/SQL, including new development of distribution functions that have no direct equivalent in Oracle.
- Development of Automic jobs to run DataStage pipelines and Python scripts (PySpark jobs) that control the population of the SME and institutional risk tables in the Risk Mart and perform business calculations.
- Participation in the agile process, including creating user stories, estimations, and planning in Azure DevOps.
- Handling Azure DevOps tickets and close collaboration with testers and business teams for error analysis and resolution.
Klaus E.
Last position:
Exasolution DBA at Rechenzentrum Innsbruck
- DBA Exasolution Server consulting and migration to version 8
- Analysis of SQL query performance and tuning
- Troubleshooting in batch scripts
- Technologies: Gitlab, EXACloud, EXAOperation, DBeaver, Control M
Olaf T.
Last position:
BI Architect in Kanban Team at Gulp / Randstad for HHLA
- Creation of automated tests.
- Extension of the functionality of the enterprise BI data warehouse.
- Design and development in SQL and PL/SQL.
- Data modeling as well as performance measurement and tuning.
- Creation of and contribution to user stories and concepts.
- Technical environment: Windows, Linux.
- Database: Oracle 19c incl. DWH, CDB, PDB.
- Tools: Confluence, CVS, Eclipse, Git, GitLab, Jira, N4, PL/SQL, SQL Developer, utPLSQL.
Alexander P.
Last position:
Head of integration for six country subsidiaries at XSYS Holding
- Analyzed the required scope of processes, infrastructure, and SAP for integrating the MacDermid subsidiaries
- Validated proposals from the new service providers
- Managed the collaboration and tracked the tasks of business and IT experts
- Coordinated communication and the PMO
- Created cutover plans in three waves for SAP conversion, Salesforce, and Ariba
Discover over 15,000 top freelancers
Statistics of experts using erwin Data Modeler
Aggregated from the professional profiles of matched freelancers.
Experience
28 years
Position duration
3.4 years
Positions per freelancer
14
Top business areas
Information Technology, Project Management, Business Intelligence
Top industries
Information Technology, Banking and Finance, Professional Services
Certification focus areas
Information Technology, Project Management, Business Intelligence
Bachelor's degree or higher
83%
Master's degree or higher
58%
Certifications per freelancer
3
Most common languages
German, English, French
Speak two or more languages
97%
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 Germany 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 Germany using erwin Data Modeler
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.
erwin Data Modeler 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 (97%)
- Banking and Finance (66%)
- Professional Services (48%)
- Insurance (45%)
- Transportation (41%)
- Manufacturing (38%)
- Government and Administration (38%)
- Telecommunication (38%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
What erwin Data Modeler does
erwin Data Modeler is a visual data modeling and database design application for documenting how information is structured, related, and governed. It supports conceptual, logical, and physical models, helping teams move from business definitions to implementable schemas. Its models provide a shared reference for data architecture, database delivery, and change control.
Models and deliverables
Professionals use the product to create and maintain artifacts such as:
- Conceptual, logical, and physical data models
- Entity relationships, domains, and reusable definitions
- Forward and reverse-engineered database designs
- Subject-area models and enterprise data dictionaries
- Comparison reports and controlled model changes
These deliverables make database structures easier to review, explain, and maintain across teams.
Ecosystem and tooling
erwin Data Modeler works across relational database environments and can reverse-engineer existing schemas for analysis. Strong specialists understand SQL, normalization, keys, constraints, indexing, and naming standards alongside the application’s modeling features. Depending on the estate, they may also work with data governance, metadata management, ETL processes, APIs, and reporting stores.
When companies need specialists
Freelance expertise is useful when an organization is consolidating databases, modernizing a legacy estate, or introducing consistent modeling standards. Common assignments include documenting undocumented schemas, resolving model conflicts, preparing migration designs, and aligning models with governance policies. In Germany, remote work can suit distributed data teams, while on-site collaboration may help during workshops with business and technology stakeholders.
Signs of strong practice
A capable professional does more than draw relationship diagrams. They clarify business meaning, challenge duplicate or ambiguous definitions, and keep logical intent separate from platform-specific implementation. Look for experience with:
- Model versioning, comparison, and impact analysis
- Database reverse engineering and forward engineering
- Naming conventions, domains, and reference data
- Stakeholder workshops and clear model documentation
Choosing the right expert
Assess the person’s ability to explain modeling decisions to both technical and business audiences. Ask for examples of models they have improved, how they handled conflicting source systems, and how they validated generated database changes. A strong specialist also adapts to your database platform, repository practices, security needs, and documentation standards rather than forcing a generic modeling method.
Frequently asked questions
Before you brief your next project: the most common questions about erwin Data Modeler.
erwin Data Modeler is used to design, document, and manage data structures across enterprise databases. Companies use it for conceptual and logical modeling, physical schema design, reverse engineering, database comparison, and data dictionary work.
erwin Data Modeler and ER/Studio both support visual data modeling, database engineering, and documentation. The better choice depends on existing repositories, supported database environments, governance workflows, collaboration needs, and the specialist’s familiarity with your organization’s standards.
erwin Data Modeler work is stronger when paired with SQL, relational database design, normalization, metadata management, and data governance. Useful adjacent knowledge can also include ETL pipelines, reporting models, cloud databases, migration planning, and stakeholder facilitation.
erwin Data Modeler assignments vary widely in scope. A focused reverse-engineering task may need a specialist who can quickly understand an existing schema, while an enterprise modeling initiative requires experience with subject areas, standards, version control, governance, and cross-team decision-making.
erwin Data Modeler work is often suitable for remote collaboration when model repositories, review processes, and database access are clearly arranged. For teams in Germany, language expectations and workshop formats should be agreed early, especially when business definitions must be validated with local stakeholders.
erwin Data Modeler projects can benefit from on-site workshops when several departments need to agree on definitions, ownership, or conflicting source structures. Remote delivery remains practical for analysis and documentation, but complex governance decisions may move faster when key stakeholders meet directly.
Ask an erwin Data Modeler professional to explain how they turn unclear business terms into governed definitions and consistent relationships. Review the clarity of their model notation, naming approach, documentation, validation steps, and handling of changes between models and live databases.
erwin Data Modeler supports both new designs and existing systems. Specialists can create models from business requirements, reverse-engineer deployed schemas, compare versions, document legacy environments, and prepare controlled changes for modernization or migration.
The average hourly rate of freelancers in Germany who have used erwin Data Modeler in their recent projects is 104 €, which corresponds to a daily rate of about 836 € based on an 8-hour working day.
Of the freelancers in Germany who have used erwin Data Modeler in their recent projects, 83% hold at least a Bachelor's degree and 58% hold at least a Master's degree.
On average, freelancers in Germany who have used erwin Data Modeler in their recent projects have 28 years of professional experience, with a single engagement typically lasting around 3.4 years.
The most common languages among freelancers in Germany who have used erwin Data Modeler in their recent projects are German (100%), English (93%), and French (24%).
The most common industries among freelancers in Germany who have used erwin Data Modeler in their recent projects are Information Technology (97%), Banking and Finance (66%), and Professional Services (48%).
The most common business areas among freelancers in Germany who have used erwin Data Modeler in their recent projects are Information Technology (97%), Project Management (79%), and Business Intelligence (76%).
Main locations of FRATCH Experts, who have recently used erwin Data Modeler
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
