Data Warehouse Expert in Hamburg
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Meet FRATCH Experts in Hamburg, who have recently used Data Warehouse
Christian Frauer
Last position:
Department Head (Interim) at Municipal utilities and transport company
- Definition and setup of the subject areas
- Building a governance model for the department with the areas of responsibility
- IT strategy, project management, process management, and quality and sustainability management
- Developing a communication strategy within the group
- Creating the IT strategy
- Designing templates, guidelines, and processes for consistent work
- Capturing strategic guardrails and grouping ongoing projects – deriving a roadmap for strategic planning
- Reviewing ongoing projects
- Creating staffing calculations and volume structure
- Defining job profiles
Guido Bäcker
Last position:
Independent Management Consultant and Interim Manager at BCTC Unternehmensberatung Guido Bäcker
Consulting, training, and coaching in the financial sector on strategy, organization, and IT topics
MorgenFund: Advising the operator of a fund platform on software selection for a sub-ledger "Cash Accounts" based on Virtual IBANs (VIBAN)
Structuring requirements, market screening, creating RfIs, communicating with vendors, and conducting the selection process
UniCredit/HypoVereinsbank: Workstream lead "Booking and Customer Reporting" in the payment transformation project "PULS"
Business analysis, creating business requirements and aligning solution items as part of the functional specification with the bank's IT service providers
Business analysis of SEPA CT and SWIFT MX (.camt, .pain, and .pacs formats), change management, team lead for a virtual team of fifteen line experts, and stakeholder management
equensWorldline Germany: Program management for three projects of the SWIFT service bureau (CBPR+, ESMIG, and Euro1Step1 migration) as part of the SWIFT MX migration
Managing individual project managers regarding overarching goals and requirements; reporting to internal and external committees and stakeholders; coordinating with dependent projects and programs
Project management/PMO: interim project management, stand-in for project managers, resource planning, budget and cost management, general PMO tasks
Sanchit Bhavsar
Last position:
Freelancer at S2S Dynamics UG
- Implementing cross-industry applications with LLMs
- Developing cloud infrastructure for clients
- Implemented end-to-end data pipeline to deploy models in real time
- Managed overall IT system administration and desktop support
Marcus Bonfigt
Last position:
Data Engineer at Deutsche Bahn AG via Scoore GmbH
- Development of ETL pipelines with Talend (7/ Enterprise)
- Development/adaptation of database schema/database functions (PostgreSQL)
- Development of GIT CI pipelines
Technologies: Talend Enterprise, Git, PostgreSQL, Dbeaver, SQL, PL-SQL, Liquibase
Marc Matt
Last position:
Freelance Data Specialist at BrightlySoftware – A Siemens Company
- Migration of customer data from a private cloud to AWS
- Optimizing data transformation jobs and migration from Talend to AWS Glue
- Automation of all migration steps
- Used technologies: AWS, Python, Lambda, CloudFormation, SQLServer, AWS Stepfunctions, Glue, PySpark
Rainer Diekmann
Last position:
Enterprise Architecture Management / Backend Software Developer at Polizei Hamburg
- Several projects in a police context
- Model and document police procedures/projects with Archimate (as-is/to-be) in the context of P20 (BKA)
- Create software architectures with microservices
- POC development with Springboot/Docker/Kubernetes
- Project size: 10 people
- Enterprise architecture management with Togaf and Archimate
- Backend software development Springboot
- DevOps with Kubernetes
- Implemented using: Java 17/21, Springboot 3, P20 architecture, Togaf, Archimate
Alex Odesser
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)
Serkan Uyanik
Last position:
Manager Finance, Risk & Regulatory Reporting at movisco AG
- Project leadership and management
- Implementing reporting solutions in banks
- Enhancing and optimizing reporting processes in bank finance and risk departments
- Consulting through all phases of regulatory requirement implementation, including requirements analysis, defining business requirements, testing, tool development, and audit-compliant documentation
- Supporting regulatory implementation projects
- Analyzing business requirements and implementing reports
- Acting as a liaison between business and IT
- Publishing on regulatory changes
- Training internal colleagues on regulatory topics
Andreas Dietrich
Last position:
Interim Chief Technology & Product Officer at Babbel GmbH
- Restructuring for product-led growth in the field of digital user-centric tech product development language learning experiences
- Scaling empowered tech product teams
- Anti-fragile software engineering
Jan Hoppe
Last position:
Founder & Chief Product Officer at ganzheit
- Founded a bootstrapped AI-native startup building digital tools for psychotherapists
- Empowered therapists to enhance therapeutic work without disrupting human connection
- Assembled founding team and reached product-market fit with LLM-powered supervision for psychotherapists
- Integrated generative AI stack, including agentic coding, evaluations, tracing, and prompt management
Timo Warnke
Last position:
Project Manager, Requirements Manager, Business Analyst, Solution Architect at Service Provider for Heat Quantity Measurement
Supporting integration testing
Writing and creating the cut-over script
Conducting workshops to clarify requirements
Gathering business requirements
Business process modeling
IT design
Project planning
Supporting migration tests
Executing a greenfield S/4HANA conversion. A DATEV application and an AS400 are to be replaced by an S/4HANA system in a public cloud. The DATEV system runs the general ledger and accounts payable. The AS400 handles accounts receivable and business partners. The payables and receivables will be migrated to S/4HANA and the DATEV solution decommissioned.
Alain Blankenburg-Schröder
Last position:
Interim Manager | Product Manager | AdTech & CDP Expert | Technical Transformations at Freelancer
- Hands-on product and portfolio analyses with actionable recommendations
- Skilled in consulting, concept development, and agile project management
- Technical leadership & team empowerment – for smooth agile delivery with foresight and guardrails
George Gambourg
Last position:
SAP Authorization Consultant/ SAP Authorization Consulting (Freelancer/SAP Consultant) at Publicly Listed Pharmaceutical Company
- Consulting on SAP authorizations and governance
- Conducting governance consultations, iteration support and project coordination
- Developing solutions for effective control and monitoring of SAP authorizations
- Creating concepts and recommendations
- Drafting detailed concepts to improve the assignment and management of SAP authorizations
- Providing clear recommendations based on established methods and best practices
- Creating/customizing authorizations for MM including MDG/MDM as well as FI, PP including AIRC Services within SAP Finance
- Reviewing existing structures and processes
- Analyzing and evaluating current SAP authorization structures and processes
- Identifying weaknesses and developing optimization strategies
- Conducting trainings and workshops
- Planning and delivering trainings and workshops for awareness
- Sharing knowledge in SAP authorizations, including role assignment, support during iterations and consulting on role development in the pharmaceutical environment.
Jan Gleske
Last position:
Interim Senior Application Owner for Pricing, Forecasting and Prognosis Solutions at International energy trading company
- Collaborated closely with key users, business analysts and product owners to understand requirements, define priorities and derive solutions
- Managed external service providers
- Oversaw and executed updates, patches and release management
- Handled incident, problem and change management according to ITIL
- Analyzed and evaluated incidents and changes for operational impact and business processes
- Monitored systems and interfaces, ensuring IT security and compliance requirements
- Supported IT planning, cost monitoring and contract management
- Created and executed tests for maintenance and projects
- Assisted in designing technical solutions and contributed to projects such as IT landscape harmonization and modernization
- Independently led operations-related projects and continuously optimized processes
- Achieved significant cost savings through supplier negotiations, rightsizing and decommissioning of legacy systems
- Technologies: Azure DevOps, ServiceNow, icinga, metalogic mPE/mPX, FIS, inubit, Oracle, LeanIX, One Identity, Confluence, Copilot, XML, JSON, SQL, RabbitMQ, Python, BPMN, OKR, ITIL, Kanban
Simson Otterbach
Last position:
Product Owner Salesforce at Hermes Germany GmbH
- Optimized and introduced Salesforce processes (Sales Cloud + Marketing Cloud) to support sales.
- Implemented processes for collecting requirements from various departments.
- Expanded reporting for transparency of project progress and backlog priorities.
- Managed the backlog, created user stories and acceptance criteria.
Discover over 15,000 top freelancers
Statistics of experts using Data Warehouse
Aggregated from the professional profiles of matched freelancers.
Experience
22 years
Position duration
2.7 years (Germany: 3.3 years)
Positions per freelancer
16 (Germany: 13)
Top business areas
Information Technology, Business Intelligence, Project Management
Top industries
Information Technology, Banking and Finance, Healthcare
Certification focus areas
Information Technology, Project Management, Product Development
Bachelor's degree or higher
93% (Germany: 88%)
Master's degree or higher
87% (Germany: 57%)
Doctorate
7% (Germany: 10%)
Certifications per freelancer
2 (Germany: 3)
Most common languages
German, English, Spanish
Speak two or more languages
95%
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 Hamburg 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 Hamburg using Data Warehouse
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
Modern analytical database architectures
A modern analytical repository centralizes disparate data sources to empower business intelligence and reporting. It acts as the single source of truth for corporate decision-making. These systems consolidate structured, semi-structured, and unstructured data from transactional databases, CRM applications, and external APIs.
Core modeling and design methodologies
Experienced specialists utilize proven design paradigms to structure analytical data. They establish reliable storage layouts that balance query performance with ease of use for business analysts.
- Dimensional modeling utilizing Star and Snowflake schemas
- Normalized architectures following the Inmon methodology
- Highly scalable and flexible Data Vault 2.0 structures
- Specialized physical storage configurations for columnar indexing
Ecosystem tools and cloud platforms
The modern tooling landscape spans across public cloud giants and dedicated analytical software. Professionals navigate these specialized tools to build scalable pipeline architectures.
- Cloud platforms including Snowflake, Google BigQuery, and Amazon Redshift
- Transformation frameworks like dbt and SQL execution engines
- Orchestration utilities such as Apache Airflow and Prefect
- Classical on-premise solutions like Microsoft SSIS and Oracle Exadata
Strategic triggers for external expertise
Companies often bring in freelance specialists during critical transition periods. These situations require deep technical knowledge that internal engineering teams might lack. Typical scenarios include migrating legacy on-premise servers to the cloud, optimizing slow SQL queries that stall reporting, and building greenfield analytical infrastructures from scratch.
Traits of top tier professionals
Exceptional specialists combine deep technical capability with a strong understanding of business logic. They translate complex corporate goals into technical database schemas without losing performance. They possess advanced SQL mastery, clear data governance practices, and the communication skills required to gather requirements from non-technical stakeholders.
Local project delivery in Hamburg
The northern German business hub relies heavily on structured analytical infrastructure to power its key sectors. Local logistics, maritime trade, and e-commerce enterprises in Hamburg require robust local or remote database solutions. Freelancers in this region must seamlessly integrate into hybrid setups, navigate strict European GDPR compliance rules, and communicate effectively in both German and English.
Frequently asked questions
Curious about Data Warehouse? Here are the answers that come up again and again.
A freelance specialist designs, builds, and maintains a data warehouse to centralize your business data. They establish reliable ETL pipelines, structure tables for rapid query performance, and ensure that your business intelligence tools can access clean data.
A data warehouse stores highly structured and processed data ready for business reporting, whereas a data lake stores raw, unprocessed data in its native format. Freelancers often combine both approaches in a modern lakehouse architecture to balance flexibility and performance.
Modern projects rely heavily on cloud-based platforms. A specialist in this area typically deploys solutions on Snowflake, Google BigQuery, or Amazon Redshift, rather than traditional on-premise hardware.
Look for deep expertise in SQL, data modeling paradigms like Kimball, and ETL orchestration. A certified data warehouse professional should also have hands-on experience with transformation tools like dbt and cloud infrastructure security.
Yes, local experts in the Hamburg area frequently help businesses migrate from legacy on-premise databases to scalable cloud platforms. These professionals ensure minimal disruption to daily business operations while moving your data warehouse infrastructure safely to the cloud.
Most architecture and development tasks can be executed entirely remote. However, for initial workshops and security audits, companies in Hamburg often prefer a data warehouse specialist who can occasionally join on-site meetings to align with local stakeholders.
Every modern data warehouse operating in Germany must adhere to strict European privacy regulations. Freelance experts implement row-level security, data masking, and automated deletion pipelines to keep your analytical storage fully GDPR-compliant.
Building or restructuring a data warehouse is usually an iterative process. Initial setup and core pipeline migrations often take several months, which is why hiring an adaptable freelance specialist ensures you have expert support during the critical phases.
The average hourly rate of freelancers in Hamburg, Germany who have used Data Warehouse in their recent projects is 111 €, which corresponds to a daily rate of about 888 € based on an 8-hour working day.
Of the freelancers in Hamburg, Germany who have used Data Warehouse in their recent projects, 93% hold at least a Bachelor's degree, 87% hold at least a Master's degree, and 7% hold a doctorate.
On average, freelancers in Hamburg, Germany who have used Data Warehouse in their recent projects have 22 years of professional experience, with a single engagement typically lasting around 2.7 years.
The most common languages among freelancers in Hamburg, Germany who have used Data Warehouse in their recent projects are German (100%), English (95%), and Spanish (25%).
The most common industries among freelancers in Hamburg, Germany who have used Data Warehouse in their recent projects are Information Technology (95%), Banking and Finance (65%), and Healthcare (50%).
The most common business areas among freelancers in Hamburg, Germany who have used Data Warehouse in their recent projects are Information Technology (100%), Business Intelligence (95%), and Project Management (90%).
Main locations of FRATCH Experts, who have recently used Data Warehouse
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 
Munich 
Cologne 
Frankfurt 
Dusseldorf 
Essen 
Hanover 
Nuremberg Request a free demo
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Philipp Thomaschewski
FRATCH CEO
