Service-Oriented Architecture Experts in Frankfurt
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Meet FRATCH Experts in Frankfurt, who have recently used Service-Oriented Architecture
Boian V.
Last position:
Solution Architect at DB InfraGO AG
The Base Services of DB InfraGO form a central data hub between the company’s IT systems. Common Data Services are developed that distribute data from source systems to a variety of downstream systems (via JMS) and make them available (via REST API). The existing service landscape based on TIBCO is being migrated to DB InfraGO’s cloud-native platform.
- Architecture design and implementation for performance-optimized bulk data processing of several million datasets at specific times during the day
- Technical specification and documentation of business requirements
- Integration of various subsystems (including SAP and Salesforce) through the reimplementation of more than 40 microservices based on Spring Boot
- Migration of TIBCO Based microservices from the Enterprise Integration Platform to the Cloud Native Platform using Spring-Boot
- Establishment of a deployment pipeline using GitLab CI/CD, Artifactory, and automated deployment to a Kubernetes environment with the help of ArgoCD
- Definition and implementation of automated unit, integration, and regression tests
Team Size: 9
Technologies/Tools: Java, Spring Boot, ActiveMQ(JMS), JUnit, Tibco Business Works, Gitlab (CI/CD), Kubernetes (Amazon AWS), ArgoCD, postgreSQL, Oracle, Postman, Hoppscotch, openAPI, Sonarqube
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.
Eugen B.
Last position:
Test Manager at Research Industrial Systems Engineering (RISE) Forschungs-, Entwicklungs- und GroĂźprojektberatung GmbH
- Creation of test concepts
- Requirements management
- Release planning and support
- DDS management
- Reporting (test report, AFO TestMatrix)
- UAT/BAT coordination
- Onboarding of new team members
- Team planning / capacity planning
- Support with documentation
- Methods/tools/technologies: black box, white box, exploratory testing, E2E testing, regression testing, L&P testing, acceptance testing and interface testing, integration and system testing, networking, JIRA with Zephyrscale plug-in, Confluence, RISE Portal, Ethernet, IPv4, IPv6, Linux, VM, Postman, SQL, SQL-Developer, Bruno, Wireshark, cloud, Burp Suite, Notepad++
Kurt R.
Last position:
Lead Solution Architect (AI HealthTech) / interim CTO & Product Co-Owner at Physio-Agil Frankfurt
- General CTO responsibilities (architectural design, operational setup, external runtime product evaluation, investor buy-in, regulatory compliance).
- Software development oversight (implementation on deep-dive-in) plus workflow design.
- Product co-ownership.
- Tech/tools/frameworks: proprietary software (Java, JavaScript), Kubernetes, Postgres, MiniIO, Ollama (internal), several xAI API (external), OpenTofu (Terraform), Keycloak, Kafka, Prometheus, ELK Stack, GitHub, GitHub Workflows, Argo CD, ISO 27001, BSI-ISM, EU AI Act.
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
Helge S.
Last position:
Partner & Co-Founder at Digitice.io
- End-to-end responsibility for product strategy, technology architecture across multiple client engagements
- Led strategic platform transformations from legacy and on-premise setups to cloud-native architectures on Google Cloud and Azure
- Established SaaS-ready, API-driven platform foundations to support scalability, international rollout and long-term growth
- Designed and implemented AI-enabled platform capabilities, including agentic AI in software development workflows and AI-based automation replacing classical middleware solutions
- Built and led cross-functional product, engineering and technology teams; aligned stakeholders across business, product and technology
Ralf K.
Last position:
Senior Java Developer, Consultant at Dataport AĂ–R
- Maintenance and further development of the Java/Swing-based @rtus FormsEditor
- Design and development of a graphical formula editor based on Google Blockly to map a project-specific DSL, including parsing and code generation
- Implementation of pixel-perfect synchronization between editor and print preview to improve user experience
- Technologies: Java 17/21, Swing, JavaFX, JBoss/Wildfly, JUnit, Mockito, Blockly, JPedal, ICEPDF, Eclipse
Christopher E.
Last position:
Senior Oracle DBA and WebLogic Administrator, Oracle Business Intelligence for Applications
- Oracle databases 11g, 12c and 19c RAC
- Installation, configuration and deployment of Oracle Fusion Middleware 11g & 12c (WebLogic, SOA, Oracle Forms and Report Server, etc., OBIA)
- Administration of Oracle 11g, 12c, RAC and 19c
- Applying patches
- Installation, configuration and deployment of Tomcat
- Oracle tuning
- The system includes several production, QA, test & development Oracle databases and WebLogic application servers 11g & 12c
Jörg-Ulrich H.
Last position:
Data flows for health insurance providers
- Further development and creation of data flows for health insurance providers
- Data management across various storage systems (DB2, MSSQL, PostgreSQL, S3, custom APIs, ...)
- Documentation and training
- Planning and deployment of NiFi 2.x (major upgrade)
- Integrating Grafana for visualization, monitoring, and alerting
- Extensive use of the NiFi API to continuously monitor the system and its components
Daniel S.
Last position:
Business and IT consulting at Business and IT Consulting (freelance)
- Process consulting
- Project management
- Creating and aligning functional and technical specifications
- Portfolio management
- Stakeholder management
- Data cleansing
- Test, quality, and requirements management
- Rollout management
- Financial planning
- Marketing and sales consulting
- IT architecture and strategy consulting
- Trainer for IT, project management, and eBusiness
Discover over 15,000 top freelancers
Statistics of experts using Service-Oriented Architecture
Aggregated from the professional profiles of matched freelancers.
Experience
23 years (Germany: 22 years)
Position duration
3.2 years (Germany: 2.4 years)
Positions per freelancer
16 (Germany: 15)
Top business areas
Information Technology, Product Development, Project Management
Top industries
Information Technology, Banking and Finance, Transportation
Certification focus areas
Information Technology, Project Management, Product Development
Bachelor's degree or higher
83% (Germany: 96%)
Master's degree or higher
50% (Germany: 56%)
Certifications per freelancer
4 (Germany: 3)
Most common languages
German, English, Spanish
Speak two or more languages
90% (Germany: 94%)
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 Service-Oriented Architecture
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.
Service-Oriented Architecture 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 (80%)
- Transportation (60%)
- Automotive (50%)
- Healthcare (50%)
- Professional Services (50%)
- Telecommunication (50%)
- Manufacturing (40%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
What SOA means
Service-Oriented Architecture, commonly called SOA, structures software as a set of independent services that expose clear business capabilities. Each service can be owned, changed and deployed with defined contracts, while shared communication rules connect the wider system. This approach is common in large organizations where applications must evolve without replacing the entire landscape.
What it builds
SOA supports integration-heavy systems that connect business functions across departments, products and external partners. It is useful where reliability, governance and reuse matter more than a single tightly coupled application.
- Connect ERP, CRM, billing and customer platforms
- Expose reusable business services through APIs
- Coordinate workflows across distributed applications
- Modernize legacy systems without disrupting core operations
Ecosystem and tooling
Strong SOA work can involve REST and SOAP services, XML and JSON contracts, WSDL, API gateways, message brokers and enterprise service buses. Specialists may also work with Java, .NET, Spring, MuleSoft, Apache Camel, IBM Integration Bus or cloud integration services. The right tooling depends on existing systems, security needs and operational constraints.
When companies need specialists
Companies often bring in freelance expertise during a transformation, integration program or platform consolidation. A specialist can clarify service boundaries, review contracts, reduce dependencies and create a practical migration path. Frankfurt-based organizations may also value professionals who can combine remote delivery with on-site workshops and clear communication across international teams.
- Replace brittle point-to-point integrations
- Define governance for service ownership and versioning
- Improve observability across distributed transactions
- Prepare legacy capabilities for API-based access
Skills that matter
Effective SOA professionals understand architecture and implementation together. They can model domains, choose synchronous or asynchronous communication, design fault handling and secure service interfaces. They also know how to document contracts, test integrations, monitor dependencies and align technical decisions with business processes.
How to assess quality
Look for evidence of production systems with multiple services, real integration constraints and clear ownership models. Ask how the specialist handled version changes, partial failures, authentication, message delivery and rollback decisions. Strong professionals explain trade-offs between SOA, microservices and simpler modular designs instead of promoting one pattern for every situation.
Frequently asked questions
Questions about Service-Oriented Architecture? Start with the answers below.
Service-Oriented Architecture is used to organize business capabilities as connected, reusable services. Companies apply it to integrate enterprise applications, expose stable interfaces and modernize legacy systems while keeping core operations running.
SOA usually emphasizes enterprise-wide reuse, shared governance and integration across established systems. Microservices typically favor smaller independently deployable services and stronger team autonomy, so the better choice depends on domain boundaries, operational maturity and existing platforms.
A strong Service-Oriented Architecture specialist often understands API design, REST, SOAP, messaging, XML, JSON, security and identity management. Experience with enterprise service buses, integration platforms, cloud services, observability and domain modeling is also valuable.
A Service-Oriented Architecture project benefits from a specialist who has handled production integrations and the constraints of distributed systems. The required depth depends on scope: a contract review differs from a landscape redesign, migration program or governance rollout.
Service-Oriented Architecture work can be delivered remotely when documentation, access and decision-making are well organized. On-site sessions in Frankfurt can still help with domain workshops, legacy-system discovery and alignment among business and technology teams.
Service-Oriented Architecture is useful when separate systems must share business capabilities and evolve under different ownership. A modular application may be more suitable when one team controls the full system and independent integration is not a central requirement.
Assess whether a Service-Oriented Architecture professional can explain service boundaries, contracts, failure handling and ownership in concrete terms. Review architecture samples, migration decisions and examples of monitoring, testing and security rather than relying only on terminology.
Before starting a Service-Oriented Architecture engagement, clarify the current application landscape, integration patterns, decision authority and expected deliverables. It is also important to understand whether the work focuses on architecture, implementation, migration, governance or a combination of these areas.
The average hourly rate of freelancers in Frankfurt, Germany who have used Service-Oriented Architecture in their recent projects is 113 €, which corresponds to a daily rate of about 904 € based on an 8-hour working day.
Of the freelancers in Frankfurt, Germany who have used Service-Oriented Architecture in their recent projects, 83% hold at least a Bachelor's degree and 50% hold at least a Master's degree.
On average, freelancers in Frankfurt, Germany who have used Service-Oriented Architecture in their recent projects have 23 years of professional experience, with a single engagement typically lasting around 3.2 years.
The most common languages among freelancers in Frankfurt, Germany who have used Service-Oriented Architecture in their recent projects are German (100%), English (90%), and Spanish (10%).
The most common industries among freelancers in Frankfurt, Germany who have used Service-Oriented Architecture in their recent projects are Information Technology (100%), Banking and Finance (80%), and Transportation (60%).
The most common business areas among freelancers in Frankfurt, Germany who have used Service-Oriented Architecture in their recent projects are Information Technology (100%), Product Development (90%), and Project Management (80%).
Main locations of FRATCH Experts, who have recently used Service-Oriented Architecture
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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Munich 
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