Service-Oriented Architecture Experts in Frankfurt
matched in minutes by AIHire experts who design service boundaries, integrate legacy systems and govern API-based enterprise architectures. FRATCH matches you quickly and precisely with vetted, available freelancers for Service-Oriented Architecture projects.
Meet FRATCH Experts in Frankfurt, who have recently used Service-Oriented Architecture
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.
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
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++
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 for representing a project-specific DSL, including parsing and code generation
- Implementation of character-accurate synchronization between the editor and print preview to improve the user experience
- Technologies: Java 17/21, Swing, JavaFX, JBoss/Wildfly, JUnit, Mockito, Blockly, JPedal, ICEPDF, Eclipse
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
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
24 years (Germany: 23 years)
Position duration
3.2 years (Germany: 2.4 years)
Positions per freelancer
16
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: 57%)
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 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 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 29 Oct 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 is
Service-Oriented Architecture, commonly called SOA, structures business capabilities as independent services with clear contracts. Each service can be developed, deployed and maintained separately while communicating through defined interfaces. This approach connects distributed systems without forcing every application into one codebase.
Where it fits
SOA supports complex enterprise landscapes where processes span departments, applications and data stores. Typical work includes:
- Exposing order, payment and customer capabilities as reusable services
- Connecting ERP, CRM, billing and supply chain systems
- Orchestrating multi-step business processes
- Modernising legacy applications without replacing them at once
Ecosystem and tooling
SOA specialists work across REST and SOAP services, XML and JSON contracts, message brokers and enterprise service buses. Relevant tooling may include WSDL, UDDI, Apache Camel, MuleSoft, IBM Integration Bus, Oracle Integration and cloud integration services. They also use API gateways, schema registries, observability tools and automated delivery pipelines.
When expertise helps
Companies bring in freelance SOA expertise when integrations have become fragile, service ownership is unclear or a transformation must preserve critical legacy systems. In Frankfurt, specialists may support banks, insurers, logistics groups and industrial businesses, working on-site, remotely or in a hybrid setup with German- and English-speaking teams.
Delivery responsibilities
A strong professional turns business capabilities into stable service contracts and maps dependencies before changing production systems. Their work can cover architecture decisions, interface design, security, message handling, testing, deployment and documentation. They establish governance without creating unnecessary approval layers.
What good looks like
Look for evidence of service decomposition, integration patterns and production operations rather than familiarity with a single vendor product. Strong specialists explain trade-offs between synchronous APIs, asynchronous messaging and direct integration. They define ownership, versioning, failure handling and monitoring so services remain usable as teams and systems change.
Frequently asked questions
Questions about Service-Oriented Architecture? Start with the answers below.
Service-Oriented Architecture is used to expose business capabilities as reusable services and connect applications across an enterprise. It is common in integration programmes involving ERP, CRM, finance, logistics, customer portals and legacy systems.
SOA usually focuses on enterprise-wide reuse, shared governance and integration across heterogeneous systems. Microservices typically use smaller service boundaries and team-owned deployments, while SOA may rely more heavily on an enterprise service bus, central policies or shared integration standards.
Service-Oriented Architecture work benefits from knowledge of API design, SOAP, REST, XML, JSON, message queues and integration patterns. Security, identity management, cloud connectivity, database integration, observability and CI/CD are also valuable depending on the landscape.
A Service-Oriented Architecture project needs a specialist who has worked with systems of comparable complexity and operational risk. The right depth depends on whether the assignment covers a single integration, service governance, legacy modernisation or an enterprise-wide transformation.
Service-Oriented Architecture work can often be delivered remotely because architecture reviews, interface documentation and integration testing are largely collaborative and digital. On-site workshops in Frankfurt can still help when teams need to map business processes, inspect legacy systems or align several departments.
Ask a Service-Oriented Architecture professional to explain a real service boundary, its contract, ownership model and failure strategy. Strong answers cover versioning, security, monitoring, testing and recovery, not only diagrams or vendor terminology.
SOA is often a better choice when several applications need the same business capability or when integrations must remain stable as systems change. Direct connections may be simpler for a narrow, temporary flow but can create duplication and tight coupling as the landscape grows.
Before starting Service-Oriented Architecture work, clarify service ownership, target interfaces, existing middleware, security requirements and deployment constraints. Also confirm who approves contracts, how legacy dependencies are documented and how success will be tested in production.
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 24 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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