Domain-Driven Design Experts in Frankfurt
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Meet FRATCH Experts in Frankfurt, who have recently used Domain-Driven Design
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 terminal device manufacturer
Participation in the EU-funded MORANE-2 project to validate the Future Railway Mobile Communication System (FRMCS) in real-life use cases: creation of the requirement specifications for TOBA as well as the associated test specifications.
Technologies: 5GS (Radio & Core), FRMCS, MCx (MCPTT, MCData, MCVideo), MC Gateway UE, MCx Priority/Security/QoS Management, ETCS, SIP, IMS
Saqib J.
Last position:
AI Developer / AI Engineer (Lead) at KOM4TEC GmbH
- Conceptual design and implementation of modular AI assistants for sales and business processes in 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 server, 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 as well as mentoring in 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
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
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.
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.
Ingo D.
Last position:
Analytics at BaFin - Federal Financial Supervisory Authority Frankfurt
- Introduction of methods for developing and automated deployment of cloud-native software and machine learning applications in OpenShift clusters
- Development of various programs in Python
- Technologies: Kubernetes, OpenShift, Kustomize, ArgoCD, Tekton, Docker, PodMan, Airflow, IntelliJ, PyCharm, Git, Bitbucket, Jira, Confluence, Python
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.
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)
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
Artur S.
Last position:
Senior Consultant at MHP - A Porsche Company
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
2.5 years (Germany: 2 years)
Positions per freelancer
13 (Germany: 14)
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Banking and Finance, Transportation
Certification focus areas
Information Technology, Project Management, Product Development
Bachelor's degree or higher
93% (Germany: 95%)
Master's degree or higher
43% (Germany: 54%)
Doctorate
7% (Germany: 4%)
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 19 Sep 2026.
Daily rate distribution
The chart shows how the daily rates of freelancers in this technology in Frankfurt 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 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 19 Sep 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 (82%)
- Transportation (47%)
- Automotive (41%)
- Healthcare (41%)
- Professional Services (41%)
- Telecommunication (35%)
- Pharmaceutical (29%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
What Domain-Driven Design means
Domain-Driven Design, or DDD, is a software design approach centered on the business domain. Teams work with subject matter experts to turn business language, rules and workflows into a shared model. That model guides architecture, code boundaries and technical decisions instead of letting isolated features define the system.
What it helps build
DDD is useful when a company runs complex operations that cannot be captured by simple CRUD screens or one broad data model. It supports modular monoliths, distributed systems and services where business rules must remain clear as the product evolves.
- Model order, pricing, claims or fulfillment domains
- Define bounded contexts and context maps
- Separate core capabilities from supporting functions
- Protect business rules through domain-oriented design
Methods and ecosystem
Professionals use event storming, domain storytelling and collaborative modeling to discover the domain. Strategic design identifies bounded contexts, subdomains and integration relationships; tactical design applies entities, value objects, aggregates, domain services and domain events. DDD can be used with Java, .NET, Kotlin, TypeScript and common architectural styles such as hexagonal architecture and event-driven systems.
When companies bring in experts
Freelance expertise is valuable when growth has made a system difficult to change, when several teams interpret the same business terms differently, or when a large replacement needs a safe structure. Experts can facilitate workshops, review an existing model, define service boundaries and create an incremental modernization path.
- Reconcile conflicting terms across teams
- Find boundaries in a legacy application
- Establish a shared domain language
- Prepare a modular architecture or migration plan
What strong professionals deliver
Strong DDD professionals connect business conversations with implementable technical decisions. They explain trade-offs without treating every domain as a collection of services, test aggregates against real invariants and keep models useful as the business changes. Their deliverables may include domain maps, context boundaries, decision records, integration contracts and architectural guidance.
Collaboration and project fit
Effective work depends on access to people who understand the business, not only technical documentation. Remote workshops can work well with prepared sessions, shared modeling tools and clear decisions; on-site collaboration in Frankfurt may help when processes are tacit or teams need intensive alignment. The right specialist adapts the method to the organization, delivery stage and existing technology rather than imposing a fixed DDD template.
Frequently asked questions
Not sure where to start with Domain-Driven Design? These answers cover the essentials.
Domain-Driven Design is used to structure software around complex business capabilities, rules and processes. It helps teams create clear boundaries, reduce conflicting terminology and evolve systems without spreading business logic across unrelated components.
DDD is a design approach, while microservices are a deployment and architecture style. DDD can help identify sensible service boundaries, but it also works well with a modular monolith or other architectures when separate services would add unnecessary complexity.
A strong Domain-Driven Design expert usually brings facilitation, business analysis and software architecture skills. Experience with event storming, event-driven integration, automated testing, legacy modernization and technologies such as Java, .NET or TypeScript is often useful.
A DDD engagement needs practical experience with the specific business domain and the system’s current constraints, not simply familiarity with terminology. A focused discovery workshop may need a smaller contribution, while a transformation benefits from someone who has guided modeling, architecture and implementation together.
Domain-Driven Design can work effectively with remote teams in Frankfurt when workshops use shared visual models, clear agendas and documented decisions. On-site sessions can still be valuable for uncovering tacit processes, especially when several business groups must agree on boundaries and language.
A company may not need DDD for a small, stable application with simple rules and little domain complexity. The approach is most useful when business behavior is central, change is frequent or multiple teams need a shared structure for evolving the system.
Ask a Domain-Driven Design professional to explain a past model, the decisions behind its boundaries and what changed after implementation. Quality shows in clear business language, explicit trade-offs, useful artifacts and a willingness to simplify rather than add patterns for their own sake.
A DDD engagement may produce a shared glossary, domain and context maps, event-storming results, architectural decisions and integration contracts. The exact output should match the project stage and lead to decisions that teams can apply in design, development and delivery.
The average hourly rate of freelancers in Frankfurt, Germany who have used Domain-Driven Design in their recent projects is 98 €, which corresponds to a daily rate of about 787 € 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, 43% 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 2.5 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 (29%).
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 (82%), and Transportation (47%).
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 (71%).
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 
Munich 
Cologne 
Dusseldorf 
Nuremberg Request a free demo
Get in touch with the FRATCH team and we will get back to you within 4 hours.
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Philipp Thomaschewski
FRATCH CEO
