
SOAP Experts in Frankfurt
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Meet FRATCH Experts in Frankfurt, who have recently used SOAP
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
Mario P.
Last position:
Senior IT Project Manager / Program Lead – Network Strategy 2030 at ALDB GmbH
- Holistic responsibility for modernizing and expanding federal networks and upgrading critical data center and telecom infrastructure in the high-security agency environment of BDBOS
- Planning and management of the expansion of national BOS network infrastructure in the VS-NfD/KRITIS environment with technical decision authority at the architecture and component level (Cisco, Layer 2/3, WAN redundancy)
- Planning, tendering (EVB-IT/UVgO) and oversight of the upgrade of security-critical telecom infrastructure for emergency call 110/112 (ACD)
- Capacity planning, rack integration, structured cabling, power supply, cooling concept (CRAC/In-Row) and DCIM monitoring for data center expansion
- Building the IT department from scratch: structures, governance, processes, team recruiting, vendor selection and long-term IT strategy
- Planning and managing infrastructure and application migrations: migration strategies, batch planning, hypercare stabilization and rollback concepts
- Creating vendor-neutral specifications (telecom systems, signature solutions) according to EVB-IT and UVgO; contract award and vendor management
- Setting up a secure IT environment according to BSI basic protection, ISO 27001 and VS-NfD; developing IT security concepts and CMDB analyses
- Hands-on program leadership: decision papers for management and steering committees, risk management, reporting and change request control
Johannes E.
Last position:
Freelance Software Consultant at S|R Software GmbH & Co. KG
- Provided consulting for modernizing legacy applications
- Delivered critical features under tight deadlines for backend and frontend
- Technologies: C#, .NET, WPF, WCF, REST, Angular, MS SQL Server
Svyetoslav P.
Last position:
CTO at Skar Audio
- Main developer in an online retail company
- Built an online shop using the Next.JS React framework
- Integrated the site with dozens of third-party apps using REST and GraphQL APIs
- Built a backend for order management, warehouse management (with iPhone app), and supply management
- Automated invoicing and finances with QuickBooks
Lutz H.
Last position:
Developer for Oracle Forms, PL/SQL, Java at AIG Europe S.A.
- Development and implementation of backend components with PL/SQL and Oracle Forms 12c. Adaptation and further development of the policy administration system. Technical consulting in UI design with a focus on integrating existing Oracle Forms and the requirements of the BIPRO framework.
- The project takes place in the technical environment of BIPRO, SQL databases and Oracle Forms applications. The assigned work includes backend development and technical further development in the above project with the following tasks:
- Development and implementation of backend components with PL/SQL and Oracle Forms 12c to technically map the business processes and ensure a stable and efficient system architecture
- Adaptation and further development of the policy administration system to ensure system functionality in line with the requirements of the new broker communication program
- Analysis of the existing system to identify and avoid errors and technical problems during implementation, in order to enable a smooth transition to the new system
- Carrying out patching and further development of existing Oracle and Oracle Forms applications to ensure compatibility and security of the systems in use
- Technical consulting in UI design with a focus on integrating existing Oracle Forms and the requirements of the BIPRO framework.
Label: PL/SQL, Java, Oracle RDBMS and Oracle Forms
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
Suneel D.
Last position:
SAP Consultant & Developer at KS KeySolutions GmbH
- ABAP developments for rku.it GmbH, Agena GmbH, Koenig & Bauer AG, Salzgitter AG, duagon AG
- Redesigned material configuration data mass maintenance Fiori app for Siemens AG Engineering to resolve system resource issues
- Conducted S4Hana ABAP code remediation, ATC checks, and implemented ABAP parallel processing for Voestalpine AG
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.
Jörn B.
Last position:
Project Management and PMO at TANKKARTEN | PAYMENT
- Close collaboration with development teams to ensure alignment with project goals
- Assessment of in-scope assets, requirements definition and support of the public tender process up to vendor selection
- Creation and maintenance of UML sequence diagrams to document system interactions
- Intensive use of Agile/Scrum methodology and the Spotify model
- Development and implementation of cutover and rehearsal plans together with the application managers
Krunal P.
Last position:
Technical Project Manager at Moon Technolabs Pvt. Ltd.
- Manage end-to-end delivery of software projects across healthcare, gaming, and communication domains.
- Serve as Project Manager, Product Owner, and Scrum Master for multiple Agile teams.
- Oversee scope definition, sprint execution, and delivery tracking using Jira and Confluence.
- Design technical architectures and API strategies integrating Twilio, CRMs, and VoIP systems.
- Lead AI/ML projects implementing recommendation engines and automation workflows.
- Support pre-sales with effort estimation, technical documentation, and proposal reviews.
Tan P.
Last position:
DevOps Engineer in the DevOps Team at Rise-World
- Implementation of specified DevOps solutions to automate infrastructure (Terraform, Bicep, CloudFormation, Ansible) on-premises datacenter (Ovirt, Proxmox, Ceph Cluster, MinIO) and private cloud.
- Administration, configuration and implementation of CI/CD DevOps pipelines (GitLab, GitFlow) to support development process (Artifactory, Prometheus, Istio, service mesh, Helm Chart, OpenShift (Red Hat Enterprise) / Kubernetes cluster), Red Hat Satellite.
- Administration, setup, monitoring and patching of Linux infrastructure based on Red Hat Enterprise for Dev, Test and QA.
- Use of Scrum and Kanban methods.
- Administration, configuration and implementation of security standards for deploying on Dev, Test, QA and Prod stages of the new ePA applications.
- Development of new plugins and add-ons needed on current infrastructure.
- Database support.
- Data analytics support (Python, Spark, Pandas, Power BI, Splunk Enterprise).
- Implementation of best practices for DevSecOps and BizDevOps using GitOps (ArgoCD), Streamlit framework, Semaphore Ansible UI.
- Configuration and testing of iperf, uperf, sysbench using benchmark-operator for external source data and IoT/MDM devices, creating reports via ELK / OpenSearch.
- Building a new Databricks platform to collect and analyze big data from different sources and IoT devices into Hadoop framework (Python, Pandas, PySpark, Power BI, Apache Airflow).
- Building backend data aggregation and processing to automate configuration deployment between different OpenShift clusters and big data framework (Python, Pandas, PySpark, Apache Spark, PostgreSQL, Django 2, Ansible Automation, Jira JSM).
- Building a new ML pipeline platform using Kubeflow, TensorFlow, KServe.
- Data extraction, transformation and loading from different data sources including structured and unstructured data to analytic DWH / big data cluster using Python, Pandas, Polars, Power BI, Django backend and PostgreSQL.
- Setup of new DevOps Test and QA HashiCorp Vault cluster for PKI and IAM.
- Configuration and testing of automated patching based on CVSS score, SIEM-integrated CVEs.
- Use of Nexpose and InsightVM to scan vulnerability events in network, host, container and application.
- Design and implementation of secure and scalable AWS architectures including VPC, EC2, S3, RDS and Route53 and similar setups on Azure and GCP.
- Automated system provisioning and deployment using CloudFormation templates.
- Configuration of IAM roles, policies and permissions to ensure secure access control.
- Patch management, backup automation and disaster recovery setup on AWS infrastructure.
- Monitoring and optimization of system performance using AWS CloudWatch and AWS Trusted Advisor.
- Support of VMware services (vSphere, Aria, Horizon) and the virtual desktop environment.
- Development and maintenance of CI/CD pipelines using Jenkins, GitLab CI/CD and AWS CodePipeline with interface to Nutanix.
- Configuration of AWS CloudWatch to monitor application performance and system events.
- Planning and execution of migration of on-premises applications to AWS cloud platforms.
- Deployment of containerized applications using Docker and Kubernetes in AWS environments.
- Deployment of internal software packages between availability zones using AWS CodeDeploy.
- Building and deploying ML models using Scikit-learn, XGBoost and Spark MLlib including hyperparameter tuning, model evaluation and production deployment.
Mahesh S.
Last position:
Azure Solution Architect at Automotive industry
Implementation of complex Azure resources using Terraform IaC and Azure DevSecOps pipelines with network security and zero-trust governance policies
Optimization of the existing network design, firewall and database migration
Implementation of governance and network policies as Policy as Code (PaC)
Establishment of company-wide Azure connectivity using Azure VPN as an IPSec tunnel
Implementation of hybrid on-premises multi-cloud connectivity (GCP, Azure) using Terraform
Development of Azure Functions for scheduled cron jobs and Service Bus message queuing with topics
Optimization of messaging with Service Bus premium features and IP whitelisting
Stakeholder management, customer communication and creation of Architectural Decision Records (ADR)
Responsible for cost-efficient quick wins in Azure and on-premises systems
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)
Ralf K.
Last position:
Senior Java Developer, Consultant at Dataport AÖR
- 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
Delly F.
Last position:
Dad of 2 daughters at Family
Discover over 15,000 top freelancers
Statistics of experts using SOAP
Aggregated from the professional profiles of matched freelancers.
Experience
22 years (Germany: 20 years)

Position duration
2.5 years (Germany: 2.9 years)

Positions per freelancer
16 (Germany: 14)

Top business areas
Information Technology, Product Development, Quality Assurance

Top industries
Information Technology, Transportation, Banking and Finance

Certification focus areas
Information Technology, Project Management, Product Development
Bachelor's degree or higher
88% (Germany: 93%)
Master's degree or higher
63% (Germany: 55%)

Certifications per freelancer
3

Most common languages
German, English, French

Speak two or more languages
95%
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 SOAP
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.
SOAP 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 (95%)
- Transportation (64%)
- Banking and Finance (59%)
- Automotive (50%)
- Telecommunication (45%)
- Healthcare (41%)
- Insurance (32%)
- Retail (32%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
What SOAP does
SOAP, originally the Simple Object Access Protocol, is an XML-based messaging standard for exchanging structured data between distributed systems. It is widely used for formal enterprise integrations where contracts, security, reliability and clear error handling matter. Services commonly expose operations through WSDL and communicate over HTTP or other transport protocols.
Enterprise use cases
SOAP remains common in systems that support banking, insurance, healthcare, logistics, public administration and large internal operations. It connects applications that need stable interfaces and strict message rules.
- Integrate ERP, CRM and billing systems
- Connect payment, claims and policy services
- Expose or consume WSDL-defined operations
- Bridge legacy applications with newer services
- Process reliable business transactions
Ecosystem and tooling
Strong specialists work with WSDL, XML Schema, SOAP headers, envelopes and faults. They use tools such as SoapUI, Postman, Spring Web Services, Apache CXF and JAX-WS, while understanding HTTP, TLS, XML namespaces and authentication. WS-Security, WS-Addressing and WS-ReliableMessaging are relevant when enterprise requirements demand them.
When specialists help
Companies often bring in freelance expertise during an integration launch, migration, incident or audit. A specialist can clarify an unclear contract, map XML structures, resolve namespace or schema errors and improve monitoring. Frankfurt-based teams may prefer on-site workshops for complex system mapping, while remote collaboration works well for implementation, testing and support when documentation is complete.
- Stabilize failing service calls
- Create or revise WSDL contracts
- Add XML validation and fault handling
- Configure authentication and message security
SOAP and alternatives
SOAP is a strong choice when formal contracts, enterprise security standards and reliable message processing are central. REST with JSON is usually simpler for lightweight web APIs, while gRPC can suit efficient internal service communication. The right decision depends on existing systems, governance, client requirements and the level of contract enforcement needed.
What quality looks like
Experienced professionals test both valid and malformed messages, inspect complete request and response envelopes and document namespaces, faults and versioning rules. They separate transport problems from XML or business validation errors and protect sensitive data in logs. Look for clear interface documentation, repeatable tests, practical monitoring and experience with the specific middleware and systems in your environment.
Frequently asked questions
The facts hiring teams ask for most often when it comes to SOAP.
SOAP is used to exchange structured XML messages between applications, especially in enterprise environments. It supports formal service contracts, standardized faults and extensions for security, addressing and reliable delivery.
SOAP provides a stricter contract model through WSDL and XML Schema, with established standards such as WS-Security. REST is often lighter and easier to consume, particularly for browser-facing or straightforward JSON APIs; the better option depends on existing integrations and governance needs.
A strong SOAP specialist usually understands XML, XSD, WSDL, HTTP, TLS and authentication. Useful additional skills include Java or .NET service frameworks, enterprise service buses, API gateways, SQL, automated testing and application monitoring.
The required level depends on the work. A small client integration may need someone who can consume a stable WSDL, while a platform migration or security redesign calls for deep knowledge of XML schemas, WS-* standards, middleware and legacy system behavior.
SOAP work is often suitable for remote collaboration when service contracts, test environments and system access are available. On-site sessions in Frankfurt can help with workshops, network troubleshooting and coordination across teams that own connected enterprise systems.
SOAP integrations can become difficult because of complex XML schemas, namespaces, generated client code, middleware configuration and strict security policies. Small differences in headers or validation rules can cause failures, so specialists need disciplined testing and careful message inspection.
Ask how the professional approaches WSDL changes, XML validation, SOAP faults, authentication and production monitoring. A reliable specialist explains trade-offs clearly, writes repeatable tests and can show how they isolate transport, schema and business errors without exposing sensitive message data.
SOAP remains relevant when an organization depends on established enterprise contracts, WS-Security, regulated workflows or vendor interfaces that require it. For a new service, teams should compare those needs with REST or gRPC rather than choosing a protocol solely because it is familiar.
The average hourly rate of freelancers in Frankfurt, Germany who have used SOAP in their recent projects is 100 €, which corresponds to a daily rate of about 799 € based on an 8-hour working day.
Of the freelancers in Frankfurt, Germany who have used SOAP in their recent projects, 88% hold at least a Bachelor's degree and 63% hold at least a Master's degree.
On average, freelancers in Frankfurt, Germany who have used SOAP in their recent projects have 22 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 SOAP in their recent projects are German (100%), English (95%), and French (14%).
The most common industries among freelancers in Frankfurt, Germany who have used SOAP in their recent projects are Information Technology (95%), Transportation (64%), and Banking and Finance (59%).
The most common business areas among freelancers in Frankfurt, Germany who have used SOAP in their recent projects are Information Technology (100%), Product Development (82%), and Quality Assurance (64%).
Main locations of FRATCH Experts, who have recently used SOAP
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.
Countries:
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