Domain-Driven Design Experts in Frankfurt
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Meet FRATCH Experts in Frankfurt, who have recently used Domain-Driven Design
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.
Alexander H.
Last position:
Senior Product & Strategy Consultant at hegehofer.consulting
Design, development, and market launch of digital products and platforms – from strategic alignment and agile implementation to Go-to-Market and Go-Live, integrating AI into processes and products
Saqib J.
Last position:
AI Developer / AI Engineer (Lead) at KOM4TEC GmbH
- Designed and implemented modular AI assistants for sales and business processes within the Microsoft ecosystem (Agentic AI, Copilot extensions)
- Frontend architecture and development with React + TypeScript for embedded chat and assistant surfaces (streaming UI, Hooks, React Query, OpenAPI clients)
- Enterprise-level agent development: reusable skill/agent library, MCP servers, review and compliance gates
- LLM integration into the user experience: Anthropic (Claude), OpenAI, tool use, RAG pipelines, prompt engineering, guardrails
- Architecture and code review consulting, and mentoring within the AI development team
- Integration with Microsoft Graph, Power Platform, and Azure services
- Technologies: React, TypeScript, Anthropic Claude, OpenAI, MCP, RAG, Microsoft Graph, Power Platform, Azure
Ali A.
Last position:
Founder & Architect at Independent AI R&D
- Fully on-premises LLM document-examination platform for a compliance-critical banking domain: agentic LangGraph pipeline with deterministic verification, every AI judgment structured and source-anchored; ~960 automated tests, zero data egress
- GPU throughput engineering (quantized serving, speculative decoding, prefix caching): 9.5x extraction speed-up, 500+ multi-document case files per day on a single A100
- AI-native EDI/EDIFACT integration platform (~116k LOC Java 25 / Spring Boot 4, 1,900+ tests): LLM-drafted partner mappings machine-verified before go-live (DFDL conformance, field-coverage checks, dry runs), ~99.5% byte match on real customer files — replacing weeks of manual mapping per partner
Waseem S.
Last position:
Solution Architect / Subject Matter Expert at FRMCS Device Manufacturer
Participation in the EU-funded MORANE-2 project to validate the Future Railway Mobile Communication System (FRMCS) in real-world use cases: preparation of the requirements specifications for TOBA and the associated test specifications.
Technologies: 5GS (Radio & Core), FRMCS, MCx (MCPTT, MCData, MCVideo), MC Gateway UE, MCx Priority/Security/QoS Management, ETCS, SIP, IMS
Jan M.
Last position:
Founder, Senior Solution Architect, Team Lead, Senior DevOps Engineer at CreArt IT GmbH
- Hands-on solution architect
- Digital product development - SaaS
- Strategic consulting on software architecture, cloud migration, and DevOps processes
- Coaching SE developers and IT architects
David R.
Last position:
Lead Developer/Technical Architect
- Design, extension, and implementation of interfaces (REST, GraphQL, Kafka)
- Architecture and implementation of cloud-native microservices on Azure Kubernetes Service
- Domain-Driven Design, Event-Driven Architecture with Kafka
- Development of an extensive query engine for REST endpoints based on business objects
- Design and implementation of master data classification using machine learning algorithms (Weka library, Spotify Voyager)
- Analysis and evaluation of complex load test scenarios and derivation of optimizations
- Increase in system resilience (Kafka error handling, circuit breaker, sidecar service mesh in Go)
- Integration with CIAM systems (asynchronous real-time synchronization and definition of data ownership, authorization, authentication)
- Connection to Azure ServiceBus (AMQP protocol)
- Design and implementation of complex authorization concepts (including delegated administration)
- Documentation of the results (Confluence, architecture descriptions, architecture decisions)
Dimitrij N.
Last position:
Logistics Designer / Network Designer at Deutsche Bahn Cargo
- Requirements analysis, design, and development of a product for freight logistics (dispatching, planning, timetable and network optimization)
- Documentation of technical focus areas and support with acceptance and integration testing
- DBMS-agnostic modeling and mathematical algorithms for optimization with solver integration (Gurobi, Cplex, Coin-OR)
- Implementation of service layer, automated testing, and integration with third-party systems
Florian F.
Last position:
Senior Backend Developer at ING Deutschland AG
- Database design with Oracle DB, JPA and Flyway considering high performance requirements
- Analysis of multiple architecture drafts and identification of technical risks
- Design and implementation of various interfaces and integrations, especially REST APIs and Kafka topics
- Setup of Elasticsearch for monitoring and analyzing log data
- Establishment of an iterative work approach in the project team facing complex business requirements
Werner K.
Last position:
Test Coordinator, Designer and Engineer at IBM
- Testing the SekIDP and related components
- Test design, execution and automation, microservices, GitHub Enterprise, Eclipse, Katalon Test Platform, API Testing, Confluence 8, JIRA/Xray, Draw.io, Swagger/OpenAPI, Postman, Docker, Kubernetes, Podman, PuTTY, E-Health, Telematik, Gematik standards, EPA, E-Rezept, sektoraler IDP, encryption, XaDES, PaDES, DICOM, HL7, FHIR, IHE, ICD, SSO, SAML/Shibboleth, OAuth, smartcards, JWT, two factor authentication Android and iOS, Wireshark, BrowserStack, Cypress, gRPC, REST, SOAP, WS-Security, Linux Shell, PowerShell, SSH/SSL, Java, Kotlin, Cordova, Gradle, Groovy, Python, TypeScript
Marie-Josée M.
Last position:
Java Engineer / Developer at Davaso GmbH
- Involved in the full development lifecycle, including design, coding, testing, and deployment of Java-based applications.
- Built and maintained high-performance RESTful APIs and microservices, ensuring scalability and reliable data exchange.
- Practiced code reviews, used version control systems (e.g., Git), and collaborated closely with cross-functional teams to deliver robust software solutions.
- Implemented, managed, and optimized complex business logic and decision-making processes using the Drools Rules Engine, leveraging DRL (Drools Rule Language) for dynamic configuration.
- Developed software solutions for a major service provider in the healthcare insurance sector, specifically focusing on claims processing and reconciliation logic to ensure cost-effective reimbursement for health funds.
Artur S.
Last position:
Senior Consultant at MHP - A Porsche Company
Design, development, and consulting of software solutions in international, cross-functional agile projects (SAFe / Scrum), focusing on financial services and UX development.
Service Unit: Customer Experience Digital Solutions
Dilip K.
Last position:
.NET Technical Lead & Application Architect at Hays AG
- Devised a new Domain-Driven Design architecture for a core system: reverse-engineered a central component, refactored the data-access layer to minimise database round-trips (improving scalability) and migrated processing to async.
- Decomposed the platform into independent .NET Core microservices (database-per-service) with RabbitMQ pub/sub using the Outbox Pattern + Saga choreography, behind an Ocelot API Gateway (JWT, rate limiting, CORS, health checks).
- Delivered on .NET Core / Angular / SQL Server / EF Core with Docker and Azure DevOps CI/CD; implemented health checks and CORS; contributes technical designs for stories in agile Scrum.
- Sole ADR owner; mentored 3 engineers and presented architecture decisions directly to the Director of Corporate IT.
Karsten G.
Last position:
Software Development at Siemens Mobility GmbH
- Maintenance and further development of several existing projects in the "AI-powered transportation" sector, based on React, REST-like APIs (Spring, Python) and various design libraries
- Responsible in the project for build processes, JavaScript development, architecture, coordination and communication with the design team
- Agile software development (Scrum, Kanban)
- Technologies: React, TypeScript, Ant Design, Node.js, Yarn, Vite, i18n, Postgres, Keycloak, Jest, Cypress, Storybook
- Tools: IntelliJ, Git, GitLab CI, Docker, Confluence, Jira
Rashid I.
Last position:
Java Developer at IT company
- Data transformations
- IT company with more than 100 employees
- Software production
- Data augmentation and normalization, image transformation, format conversion, merging data from multiple sources
- Toolset: Java, Helm, Kubernetes, Kafka, OpenCV, IntelliJ IDEA, Gradle, Git, Docker, Containers, Scrum
Discover over 15,000 top freelancers
Statistics of experts using Domain-Driven Design
Aggregated from the professional profiles of matched freelancers.
Experience
19 years (Germany: 20 years)
Position duration
2.4 years (Germany: 2 years)
Positions per freelancer
14
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Banking and Finance, Automotive
Certification focus areas
Information Technology, Project Management, Product Development
Bachelor's degree or higher
93% (Germany: 95%)
Master's degree or higher
47% (Germany: 55%)
Doctorate
7% (Germany: 5%)
Certifications per freelancer
3
Most common languages
German, English, Russian
Speak two or more languages
100% (Germany: 98%)
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 Frankfurt 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 Frankfurt using Domain-Driven Design
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.
Domain-Driven Design 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 (100%)
- Banking and Finance (78%)
- Automotive (44%)
- Transportation (44%)
- Professional Services (44%)
- Healthcare (39%)
- Telecommunication (33%)
- Energy (28%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
Core purpose
Domain-Driven Design (DDD) is a way to design software around the business domain it serves. Teams explore business rules with subject-matter experts, turn shared language into an explicit model and keep that model visible in the code. DDD is especially useful when a product has complex workflows, regulations or many competing business concepts.
Strategic modeling
Strategic DDD clarifies the shape of a business before implementation begins. Experts identify bounded contexts, context maps, subdomains and team boundaries, then define where models should integrate or remain independent. This prevents one oversized model from spreading unrelated rules across an entire system.
- Map core, supporting and generic subdomains
- Define bounded contexts and ownership
- Document relationships between contexts
- Establish a shared domain vocabulary
Tactical building blocks
Tactical DDD translates the model into reliable software structures. Professionals work with entities, value objects, aggregates, repositories, domain services and domain events, choosing each pattern according to the business rule it protects. They often apply these ideas in Java, .NET, TypeScript or other modular application stacks.
Ecosystem and delivery
DDD connects closely with event storming, collaborative modeling, modular monoliths, microservices and event-driven integration. Tooling may include Spring Boot, .NET, messaging systems, API contracts, automated tests and observability practices. In Frankfurt, experts may support banks, logistics companies, manufacturers and software products that need close collaboration between domain teams and technical teams.
When expertise matters
Companies usually bring in freelance DDD specialists when a system has become difficult to change or when a new platform must reflect complicated business processes. The need is often visible when teams use conflicting terms, duplicate rules or split a monolith without clear boundaries.
- Untangle a growing domain model
- Prepare a modular monolith or service landscape
- Facilitate event storming and discovery workshops
- Define migration steps from legacy systems
- Review architecture against business boundaries
What strong experts deliver
Strong professionals ask precise questions before selecting patterns. They connect strategic decisions to maintainable code, test business rules at the domain level and make trade-offs clear to both technical and non-technical stakeholders. They also leave behind useful models, decisions and team practices rather than treating DDD as a fixed template.
Frequently asked questions
Not sure where to start with Domain-Driven Design? These answers cover the essentials.
Domain-Driven Design is used to model software around complex business rules and processes. It helps teams build systems that are easier to understand, change and align with the people who operate the business.
DDD focuses first on business meaning and boundaries, while a traditional layered architecture mainly organizes technical responsibilities such as presentation, application and data access. The approaches can be combined: DDD shapes the domain model, and layers or modules provide structure around it.
Domain-Driven Design is not a deployment architecture. Its bounded contexts can inform service boundaries, but DDD also works well in a modular monolith and can prevent teams from creating microservices without clear business ownership.
A strong DDD freelancer usually understands domain discovery, event storming, API design, integration patterns and automated testing. Experience with modular monoliths, event-driven systems, cloud infrastructure or legacy modernization can also be valuable, depending on the project.
The right level of Domain-Driven Design expertise depends on the problem, not a fixed duration. A short engagement may need facilitation and modeling, while a broader transformation calls for someone who can guide architecture, implementation and knowledge transfer across teams.
Domain-Driven Design can work remotely when workshops, decision records and modeling sessions are well prepared. For Frankfurt-based teams, occasional on-site sessions may help when business experts need to resolve terminology or process questions quickly, while much of the implementation can remain remote.
Look for a Domain-Driven Design specialist who can explain why a boundary, aggregate or integration pattern fits the business problem. Ask for examples of models, decisions and outcomes, and check whether the person communicates clearly with both domain experts and software teams.
DDD is especially relevant where business rules are dense, such as financial services, logistics, manufacturing, healthcare and B2B software. In Frankfurt, professionals may need to connect domain modeling with distributed operations, established enterprise systems and teams working across German and international locations.
The average hourly rate of freelancers in Frankfurt, Germany who have used Domain-Driven Design in their recent projects is 100 €, which corresponds to a daily rate of about 803 € based on an 8-hour working day.
Of the freelancers in Frankfurt, Germany who have used Domain-Driven Design in their recent projects, 93% hold at least a Bachelor's degree, 47% hold at least a Master's degree, and 7% hold a doctorate.
On average, freelancers in Frankfurt, Germany who have used Domain-Driven Design in their recent projects have 19 years of professional experience, with a single engagement typically lasting around 2.4 years.
The most common languages among freelancers in Frankfurt, Germany who have used Domain-Driven Design in their recent projects are German (100%), English (100%), and Russian (28%).
The most common industries among freelancers in Frankfurt, Germany who have used Domain-Driven Design in their recent projects are Information Technology (100%), Banking and Finance (78%), and Automotive (44%).
The most common business areas among freelancers in Frankfurt, Germany who have used Domain-Driven Design in their recent projects are Information Technology (100%), Product Development (94%), and Quality Assurance (72%).
Main locations of FRATCH Experts, who have recently used Domain-Driven Design
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.
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Hamburg 
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Cologne 
Nuremberg Request a free demo
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Philipp Thomaschewski
FRATCH CEO
