Data Modeling Experts in Leipzig
in minutes from over 15,000 CVs with the power of AI.Hire experts who design clear data models for analytics, operational systems, and warehouse layers. They shape entities, relationships, keys, and rules so teams can trust the structure behind reports and applications. Get fast, precise matching with vetted, available freelancers.
Meet FRATCH Experts in Leipzig, who have recently used Data Modeling
Thomas Polanski
Last position:
Project Manager & Product Owner – M&A Integration at voxa c/o IC Music and Apparel GmbH
- Project management of the legal and system-side integration of Taschenkaufhaus into the Voxa group: conversion of all contracts, accounts, and system access rights on the defined cutover date
- Migration from Microsoft Dynamics NAV 2009 to 2013: analysis of all existing interfaces, redefinition of processes, and coordinated go-live without interrupting operations
- Integration of the complaints and returns process into MS Dynamics NAV 2013; major process simplification through standardization
- Introduction of a new POS system (Shopify POS) in all stores: requirements analysis, configuration, rollout, and employee training
- Use of n8n automation workflows for data reconciliation between marketplaces and ERP; manual processes significantly reduced
Luis Zermeno
Last position:
Talent Partner + internal AI builder (GTM, DACH/EMEA) at Lucanet AG
- Built an internal AI recruitment assistant (Python, LangChain, Claude API) and deployed it into the team's Greenhouse workflow: automated candidate screening, structured interview-feedback extraction from transcriptions, and comms across high-volume DACH/EMEA GTM pipelines. Scoped the need with TA/GTM leadership, shipped the tool, and drove day-to-day adoption, the same loop a forward-deployed engineer runs at a customer site.
- Led ATS migration from Personio to Greenhouse across the whole team: data model, migration, and team adoption.
- Ran discovery-style intake calls translating vague requests ("we need someone senior for Italy") into structured requirements, the muscle a forward-deployed engineer uses to scope a customer deployment. 80%+ offer acceptance, ~120% of quarterly targets. Discovery and delivery in EN, DE, ES, FR.
Gwen Glaser
Last position:
Senior Ruby on Rails & DevOps Developer at Sapiens
Further development of a software solution for managing test requests and test notifications according to §106d SGB V for the Hamburg Association of Statutory Health Insurance Physicians.
- Developed numerous features, performance optimizations, refactoring, error analysis
- Refactored the dev container setup
- Optimized the GitLab CI build pipeline
- Contributed optimizations to the team workflow
Aisha Muhammad Arshad
Last position:
Operation Associate at Swappie
- Achieved full productivity within 2 weeks of onboarding in a high-volume operational environment.
- Consistently exceeded quality targets, maintaining 98% accuracy across all assigned tasks.
- Recognized by leadership for exceptional performance and rapid adaptation to complex workflows.
Jens Fischer
Last position:
Strategic Business Consultant at EURO Kartensysteme
- Analysis, redesign and functional specification for a software system to record, process and reimburse all claims in the girocard scheme
- Analysis, conception and execution for a bidding for the introduction and implementation of Identity & Access Management, Masterdata Management and Document Management Systems
- Project management for the software development project for the EKS-Net platform for the recording, processing and reimbursement of all claims in the girocard scheme
- Project management for the introduction of Identity and Access Management System, Master Data Management System and Document Management System
- Strategy consulting for digitalization of business processes
- Advice on payment transactions, compliance (PEP and sanction list checks) and risk analysis
- Design of data models and APIs
Hannes Witt
Last position:
intermedix GmbH / CGM Deutschland AG
Rule-based software for managing, planning and delivering marketing materials in the pharmaceutical industry
High performance, high availability
Fullstack, DevOps (CI/CD)
Python, PostgreSQL, Vue.js, TypeScript, Docker, Docker Compose, Nginx
Successfully migrated old Excel-based processes into an optimized product that has been in production since 2024
Sebastián Katzer
Last position:
Smart Charging at Mercedes-Benz, MBTI
Agile software development in an interdisciplinary environment
Cross-team collaboration to achieve important milestones
Independently developing new and improving existing features
Estimation, refinement, implementation, and presentation
Finding solution ideas, analyzing problems, rolling out bug fixes
Writing automated tests, manual testing, log and error analysis
Ensuring high availability, fault tolerance, and scalability of the production environment
Rolling out releases and multi-stage infrastructure
Setting up alerts and monitoring
Pair programming, code reviews, documentation
On-call duty, 3rd level support
Event-Driven Architecture, Clean Code, Hexagonal Architecture
Microservices based on Go (Gin), Java 21 (Spring Boot 3), Python (FastAPI)
Terraform/OpenTofu, KQL, SQL, JSON, REST, Helm, ArgoCD, AzureCLI, K9s, OAuth2
Postgres, Redis, Kafka, Azure EventHub, Kubernetes, nginx, Ingress
AppInsights, LogAnalytics, OpenTelemetry, Datadog, OpenAPI 3, Swagger
Azure DataExplorer, Storage, KeyVault, Container Registry, Azure Functions,…
Junit5/Jupiter, testify, RestAssured, Docker Compose, Wiremock
IntelliJ, Scrum, Kanban, Teams, Confluence, OpsGenie, Arc42
GitHub CI/CD, GitLab CI/CD, Azure DevOps
EV charging protocols (EVSE, OCPP, V1G, V2G)
Discover over 15,000 top freelancers
Statistics of experts using Data Modeling
Aggregated from the professional profiles of matched freelancers.
Experience
18 years (Germany: 19 years)
Position duration
1.9 years (Germany: 3 years)
Positions per freelancer
12 (Germany: 13)
Top business areas
Information Technology, Product Development, Business Intelligence
Top industries
Information Technology, Banking and Finance, Retail
Certification focus areas
Information Technology, Project Management, Quality Assurance
Bachelor's degree or higher
100% (Germany: 92%)
Master's degree or higher
67% (Germany: 64%)
Certifications per freelancer
2 (Germany: 3)
Most common languages
German, English, Spanish
Speak two or more languages
100% (Germany: 97%)
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 Leipzig 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 Leipzig using Data Modeling
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
Data structure
Data modeling defines how information is organized, linked, and stored. It turns business rules into a structure that teams can use in databases, warehouses, and analytics layers. Strong specialists make data easier to query, govern, and change.
Where it fits
It is used in product systems, reporting stacks, master data work, and migration projects. In Leipzig, companies often need clear models when they connect ERP, CRM, and analytics tools across teams. Typical deliverables include conceptual, logical, and physical models.
Common work
- Define entities, attributes, keys, and relationships
- Build normalized or dimensional models
- Map source systems to target structures
- Document business terms and data rules
- Support schema changes and migrations
Tooling and methods
Professionals often work with ERwin, Sparx Enterprise Architect, PowerDesigner, dbt, and SQL-based design workflows. They also use UML-style diagrams, naming standards, and data dictionaries to keep models readable. The right approach depends on whether the focus is transactional data, analytics, or master data.
When to bring help
Companies bring in freelance expertise when a model has grown messy, a migration is risky, or teams disagree on definitions. It also helps when new domains need a clean data foundation fast. Good specialists reduce rework by catching gaps before implementation starts.
What good looks like
- Clear business meaning behind each field
- Stable keys and consistent relationships
- Designs that fit reporting and operational needs
- Documentation that teams can maintain
- Experience with data modelling, not just database syntax
Frequently asked questions
Quick answers to the questions that come up most around Data Modeling.
Data modeling covers the structure of data: entities, attributes, relationships, keys, and the rules that connect them. It can also include data dictionaries, naming standards, and the move from conceptual design to a physical schema. In practice, it helps teams store and use data in a way that is clear and consistent.
Data modeling is broader than database design. Database design focuses on how data is implemented in a specific system, while modeling starts with the business meaning and structure first. A strong specialist can move from logical design to a physical schema without losing that business logic.
Data modeling support is useful when a system is hard to change, reporting is unreliable, or a migration needs a cleaner structure. It is also a good fit when internal teams know the domain but need help turning it into a model that works in practice. Freelancers are often brought in for review, redesign, or a short design phase.
Data modeling work often uses ER diagrams, SQL, and tools such as ERwin, PowerDesigner, Sparx Enterprise Architect, and dbt in analytics projects. The exact stack depends on whether the model supports transactional systems, a warehouse, or master data. Good specialists choose tools that fit the delivery process, not the other way around.
Data modeling defines the structure that other work depends on, while warehousing and ETL move and store the data. A warehouse can exist without a careful model, but the result is often harder to trust and maintain. Many projects need both skills because the model shapes how the warehouse and pipelines should be built.
A strong Data Modeling specialist usually has solid SQL, a good grasp of normalization and dimensional design, and the ability to talk with business stakeholders. Knowledge of governance, master data, and schema evolution is also valuable. In many projects, experience with analytics platforms and source system integration matters as much as the model itself.
Yes, data modeling is often done remotely because most work happens in diagrams, workshops, and shared documentation. For teams in Leipzig, on-site sessions can still help when domain knowledge is spread across departments or when source system details are difficult to untangle. Many projects work well with a mix of remote design and local workshops.
For Data Modeling, look for clear reasoning, not just neat diagrams. A good specialist explains why a key, relationship, or normalization choice was made and can show models that survived real project change. Ask for examples where the model improved reporting, reduced ambiguity, or made implementation easier.
The average hourly rate of freelancers in Leipzig, Germany who have used Data Modeling in their recent projects is 99 €, which corresponds to a daily rate of about 791 € based on an 8-hour working day.
Of the freelancers in Leipzig, Germany who have used Data Modeling in their recent projects, 100% hold at least a Bachelor's degree and 67% hold at least a Master's degree.
On average, freelancers in Leipzig, Germany who have used Data Modeling in their recent projects have 18 years of professional experience, with a single engagement typically lasting around 1.9 years.
The most common languages among freelancers in Leipzig, Germany who have used Data Modeling in their recent projects are German (100%), English (100%), and Spanish (29%).
The most common industries among freelancers in Leipzig, Germany who have used Data Modeling in their recent projects are Information Technology (100%), Banking and Finance (57%), and Retail (57%).
The most common business areas among freelancers in Leipzig, Germany who have used Data Modeling in their recent projects are Information Technology (100%), Product Development (100%), and Business Intelligence (71%).
Main locations of FRATCH Experts, who have recently used Data Modeling
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 
Dusseldorf 
Essen 
Nuremberg Request a free demo
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Philipp Thomaschewski
FRATCH CEO
