Michael T.-Senior DWH Developer
Check rate
Experience
ETL Developer
Insurance service provider
DWH for customer and financial data
- Expansion of the DWH to include new data sources
- Report development
- Data quality management
Methodology: Scrum
Tools: Atlassian Confluence & Jira
Databases: Microsoft SQL Server
Programming languages: SQL, T-SQL
ETL: Microsoft SQL Server Integration Services (SSIS)
Frontend platform: PowerBI, Microsoft Reporting Services
DWH Developer
Telecommunications service provider with an office in Munich
DWH for CRM
- Development of a data mart for IFRS 15
- Development of an APEX application for master data maintenance
Methodology: Scrum
Environment: Oracle 19c
Modeling: Data Vault 2.0
Tools: Atlassian Confluence & Jira
Databases: Oracle, Databricks
Programming languages: SQL, PL/SQL
Frontend platform: Oracle Apex
Project Manager and Developer
In-house development
Development of an application for data analysis
Methodology: Scrum
Environment: Postgres, Flask
Programming languages: SQL, Bash, Python
DWH Developer
Telecommunications service provider with an office in Munich
DWH for CRM and technical infrastructure
- Expansion of the core DWH to include technical assets and infrastructure
- Performance tuning of long-running loading processes
- Support for system operations
- Management of Cognos metadata using Framework Manager and Transformer
Methodology: Scrum
Environment: Oracle 19c
Reporting: Cognos BI 11, Tableau
Programming languages: SQL, PL/SQL, Bash, Python
DWH Developer
HD PLUS GmbH
DWH for CRM
- Detailed design of KPI requirements
- Integration of new data sources
- Implementation of ETL processes
Methodology: Scrum
Environment: PostgreSQL, Oracle
Tools: datasqill, DataGrip, git
Programming languages: SQL, Bash
Solution Architect
Uniqa Versicherungen
Development of a database for portfolio analysis
- Requirements gathering (use cases, budget specifications)
- Provision of a PostgreSQL database with AWS RDS
- Provision of a container with Apache Airflow
- Installation of a Tableau server in AWS
- Data structure modeling according to Data Vault 2.0
- Regular import of source data
- Implementation of the data flow from the staging area to the data mart with Informatica Powercenter
Methodology: Scrum
Environment: Amazon Web Services, PostgreSQL, Tableau
Tools: Informatica Powercenter, Docker, Airflow, PyCharm, DataGrip, git
Programming languages: SQL, PL/pgSQL, Python
Technical Project Manager, Solution Architect
GEMA/ICE (International Copyright Enterprise)
Migration of applications from GEMA IT to ICE IT
- Consolidation of systems
- Replacement of systems through new development based on aws
- Operation of replication between the core system and DWH using GoldenGate
Methodology: Scrum
Environment: Oracle 12g, Oracle Exadata, Oracle GoldenGate, Databricks, Amazon Webservices
Tools: git, Atlassian Confluence
Programming languages: PL/SQL, Python
Project Manager
GEMA/ICE (International Copyright Enterprise)
Set-up of a colocation facility to operate an Oracle Exadata Halfrack
Subprojects:
- Hardware sizing
- WAN connection
- Firewall and VPN deployment
- Exadata deployment
- Migration of the production database
Cognos Consultant
Telecommunications service provider with a branch in Munich
- Design and implementation of reports based on Asset Management and Request Management
- Metadata management
- Consulting on the migration from Cognos to PowerBI
Environment: Windows 8/10, Oracle 12g, Cognos BI 10
Tools: Remedy, Atlassian Jira
Programming languages: SQL
Principal Consultant DWH/ETL/BI
GEMA
Creation of a data warehouse to support reporting in the Backoffice Online area
- Creation of the overall architecture
- Modeling of data structures
- Set-up of replication with GoldenGate
- Creation of an ETL framework based on PL/SQL
Environment: Oracle Linux, Oracle 12g, Oracle Database Appliance (ODA) X5-2
Tools: SQL Developer, Oracle GoldenGate
Programming languages: PL/SQL
Principal Consultant DWH/ETL/BI
REWE Zentralfinanz
Design and implementation for converting the product master data interface to GDSN
Environment: Windows 7, SQL Server 2010
Tools: SQL Server Integration Services 2010
Programming languages: SQL, XSLT
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Telecommunication, Information Technology, Media and Entertainment, Insurance, and Retail.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Business Intelligence, Information Technology, Project Management, and Operations.
Summary
Business Intelligence/Data Warehousing/ETL consultant with more than 15 years of experience
Skills
Database Development With A Focus On Dwh & Data Mart
Interface Between Business Departments And It
Modeling Of Dwh Systems And Processes
Analysis And Tuning Of Sql Queries
Requirements Analysis, Project Management And Development Process Optimization
Portfolio/Investment Management, Asset Management
Banking
Insurance
Telecommunications
Retail
Media
Oracle Database +++
- Pl/Sql
- Exadata
- Apex (Application Express)
- Goldengate
- Performance Tuning
Microsoft Sql Server +++
- T-Sql
- Ssis (Integration Services)
- Ssrs (Reporting Services)
- Powerbi
- Fabric
Postgresql +++
- Pl/Pssql
- Migration From Oracle To Postgres
Python +++
- Jupyter Notebooks
- Pandas
- Numpy
- Flask
- Pyspark
Tools
- Git
- Svn
- Apache Airflow
- Jira
- Confluence
Languages
Education
TU Ilmenau
Diplom · Business Informatics
Certifications & licenses
Zertifizierung als Cognos Enterprise Business Intelligence Solutions Professional
Statistics
Experience
Global experience
Expertise
Qualifications
Frequently asked questions
Have questions? Find more information here.
Michael is based in Munich, Germany and can operate in on-site, hybrid, and remote work models.
Michael speaks the following languages: German (Native), English (Advanced), Italian (Advanced).
Michael has at least 13 years of experience. During this time, Michael has worked in at least 8 different roles and for 9 different companies. The average length of individual experience is 1 year and 2 months. Note that Michael may not have shared all experience and actually has more experience.
Based on recent experience, Michael would be well-suited for roles such as: ETL Developer, DWH Developer, Project Manager and Developer.
Michael's most recent position is ETL Developer at Insurance service provider.
In recent years, Michael has worked for Insurance service provider, Telecommunications service provider with an office in Munich, In-house development, HD PLUS GmbH, and Uniqa Versicherungen.
Michael is most experienced in industries like Telecommunication, Information Technology, and Media and Entertainment. Michael also has some experience in Insurance and Retail.
Michael is most experienced in business areas like Business Intelligence, Information Technology, and Project Management. Michael also has some experience in Operations.
Michael has recently worked in industries like Telecommunication, Information Technology, and Insurance.
Michael has recently worked in business areas like Business Intelligence, Information Technology, and Project Management.
Michael holds a Master in Business Informatics from TU Ilmenau.
Michael has 2 certificates. These include: Amazon Certified Cloud Practitioner and Zertifizierung als Cognos Enterprise Business Intelligence Solutions Professional.
Michael will be available full-time from December 2026.
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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.
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