JAX-WS Experts in Germany
for reliable SOAP services, matched in minutes with vetted freelancersHire experts who design, integrate and maintain JAX-WS web services, WSDL contracts and secure SOAP interfaces across Java enterprise systems. Get fast, precise matching with vetted, available freelancers for remote or on-site work in Germany.
Meet FRATCH Experts in Germany, who have recently used JAX-WS
Hooman B.
Last position:
Fullstack Developer at Möbel Roller GmbH
- Further development of the existing e-commerce platform based on SAP Commerce (Hybris) to meet the growing demands of digital commerce.
- Ensuring the scalability and performance of the backend, so the platform remained stable and efficient even under heavy user load.
- Development and integration of new OCC REST APIs and services for modular extensions and flexible adjustments, to implement new features quickly.
- Optimization of data flows and interfaces, which significantly improved platform efficiency and system performance.
- Ensuring a maintainable and scalable code base by using Clean Code principles, proven design patterns, and a future-proof architecture.
- Reduction of errors through extensive testing with JUnit, Mockito, and load tests with Gatling, supported by the introduction of automated test processes.
- Improved system performance through targeted refactoring measures and efficient database queries, especially to handle peak loads.
- Use of modern cloud and monitoring tools such as Kubernetes, Google Cloud Platform (GCP), and Grafana to ensure a stable and monitored infrastructure.
- Clear improvement in efficiency, scalability, and reliability of the platform, which now meets the demands of a dynamic and growing e-commerce market.
Thorsten M.
Last position:
Odoo Implementer at N.N.
As project manager for the Odoo implementation at a small company, I was responsible for designing, implementing, and training a fully integrated CRM and accounting system. Through structured requirements analysis, precise data migration, and targeted change management, I was able to complete the rollout in just eight weeks. The project led to a significant reduction in manual tasks, faster business processes, and increased real-time transparency.
Main Responsibilities
Requirements analysis and process mapping Configuration of Odoo modules: CRM, Sales, and Accounting Data migration (Excel/CSV → Odoo) and quality control Creation of workflows, automated email rules, and dashboards Conducting training sessions and providing support after go-live Project coordination (budget, schedule, stakeholder communication)
Key Achievements
Full implementation of the Odoo suite within the set timeframe (8 weeks) 30% reduction in accounting time and 25% acceleration of the lead-to-sale flow 100% customer satisfaction after go-live, based on survey results Successful migration of 100% of existing master data without data loss Establishment of a sustainable support infrastructure (3-month post go-live support)
Impact
Improved decision-making through real-time dashboards and automated reports Increased efficiency and cost savings (≈ €8,000/month) Scalability for future growth (additional modules can be integrated seamlessly) Strengthened sales and finance departments through seamless process integration
This summary highlights how I created concrete and measurable value for the company through structured project work, technical expertise, and targeted training.
Tamás E.
Last position:
Senior Software Developer / Tech Lead at NDA (defense / OSINT)
- Designing the audit logging framework
- Implementing APIs for developers to integrate in their codebase
- Implementing ingestion pipeline, database query layer and UI for browsing the audit events
- Improving stability and reliability of the backend system
Daniel S.
Last position:
Senior Software Engineer at energielenker solutions GmbH
- Designed and implemented a Python-based ETL pipeline with the Dagster framework to transform raw energy data from heterogeneous sources using InfluxDB and visualizations in Grafana
- Defined time-based and dependency-based jobs
- Deployed to managed Kubernetes clusters using Helm
- Integrated InfluxDB Cloud
- Prepared data for use in Grafana, including cleaning, normalization, and time-based resampling in Python
- Developed dashboards and visualizations in Grafana
- Developed unit tests with mocking using pytest
- Set up a CI/CD pipeline in GitLab
Technologies: Python, Dagster, InfluxDB, Grafana, pandas, pytest, REST, CI/CD, GitLab, Container, Kubernetes, Helm, Docker, Cloud
Waldemar B.
Last position:
Software-Architekt Produktdaten-Management Tool at Ferchau Contract GmbH
- Definition of the software architecture
- Design and development of modules
- Supporting internal employees in the learning and onboarding process
- Tools: SAP CAP / CDS, Java 21, SAP Hana, SAP Business Technology Platform (BTP)
Rainer L.
Last position:
Senior IT Consultant, Senior Software Architect, Senior Software Developer, Senior DevOps Engineer at Techniker Krankenkasse
Automation of the database major / minor releases for the TKeasy project
Concept for database major / minor release automation
As-is analysis
Evaluation of Redgate Flyway functionality
Concept creation
Products: Redgate Flyway, GitHub, Quest, Erwin Data Modeller, Oracle, Atlassian Jira, Atlassian Confluence
Skills: Docker, Continuous Delivery, Continuous Integration, Redgate Flyway, Major Releases, Minor Releases
Timo H.
Last position:
Software Developer at Continentale Krankenversicherung AG
- Implementation of a REST-based web service for querying contract, claims, customer, and sales data as part of the Dialogmanager project.
- Data release is done in compliance with CoC requirements and individual user permissions from IAM (Identity and Access Management).
- Implementation using JBoss EAP 8.1 (JakartaEE 10) and Java 21 as well as JAX-RS, CDI, Microprofile-Config, Microprofile-OpenAPI.
Jorge E.
Last position:
Bittrich & Bittrich
- Extension and maintenance of the Doktree tax advisory document management tool
- Alfresco and Angular development
- Linux system maintenance
Niels M.
Last position:
Senior Software Developer / Cloud Architect at Biesterfeld SE
- Architected ETL services for event-driven data exchange between enterprise systems on a Kafka streaming backbone.
- Optimized CI/CD pipelines for Azure AKS deployments and improved OpenSearch monitoring and alerting for proactive incident detection.
Tech: Java / Kotlin, Quarkus, Kafka / Avro, Azure / AKS, Azure Storage Container, ArgoCD, GitLab CI, OpenSearch, Terraform
Igor K.
Last position:
Freelance Software Developer
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.
Dimitri S.
Last position:
Fullstack Developer, Integrator at Generali Deutschland Versicherung AG
- Developing automated build and deployment processes for the exclusive front office systems
- Integrating the front office systems into the IT infrastructure
- Developing innovative, user-friendly sales software for financial advisors
- Ensuring quality and flexibility through automation and working with CI/CD
- Working according to DevOps principles
- Operating the software together as a team in the AWS cloud and Azure cloud
- Deploying software artifacts to testing and production environments
- Maintaining the test environments
- Performing error analysis and providing information for further root cause analysis
- Maintaining and supporting the build pipeline
- Supporting load testing
- Coordinating the batch execution schedule with batch automation
- Creating concepts to further develop the software packaging process
- Building and delivering components to partners
- Developing GitLab and Jenkins pipelines for building, deploying and integrating components
- Automating processes with Spring Boot applications with a GUI (Thymeleaf, Angular 19)
- Developing RESTful Spring Boot applications with Kotlin and Angular 19, JDBC and REST accesses, data exchange via SFTP, XML (JAXB)
- Designing components using Domain-Driven Design (DDD)
- Replacing cmd and bash scripts with Spring Boot applications with a GUI
- Replacing Java 8 applications with JSP by Spring Boot 3 applications (Thymeleaf, Angular)
- Implementing frontend and backend authentication via Keycloak
- Writing JUnit tests with Mockito
- Increasing code coverage for SonarQube analysis
Andreas N.
Last position:
Open Source Founder at Privatier
- AI-supported source code analysis
- AI image generation for a shirt shop
- AI-supported analysis of connected YouTube channels and commenting users
- AI-supported software prototyping
- Operation of a local AI environment
- 3D printing and scanning: development of a process to repair GfK parts using 3D-printed negative molds
The focus is on practical applications of new technologies, founding an open-source project for a yacht autopilot, as well as yacht refit and motorhome conversion.
Vladimir M.
Last position:
Developer at Financial services provider
- Support and further development of a framework for developing applications in a banking association: DynS/OSPE
- Migration of the framework to Java 11 and Java 17
- Java8, Java11 and Java17, Spring, Spring-Batch, Spring WebServices, Spring-Security, Spring-Data, JPA, Hibernate, OpenSource libraries etc.
- XML, JAXB, JSON, REST and SOAP services, DB2, Oracle, WebSphere or Liberty AS, FreeMaker, Junit, mock libraries, JaCoCo, Maven, IntelliJ, Eclipse, GitHub, SVN, Jira
Rolf M.
Last position:
Lead Developer and Reviewer of Specialized Applications for the 2021 Census Project at Federal Statistical Office
- Kubernetes, AWS Cloud, Docker, RESTful Services, ActiveMQ, Oracle Advanced Queuing, JBoss EAP, Spring Batch, Git, Keycloak, Kafka, Maven
- Set up CI/CD pipelines with Jenkins
- Developed automated integration tests
- Performed DevOps tasks
- Regularly performed static code analyses during development on all releases of the Census specialized applications using SonarQube
- Set up an R server for household generation
- Set up a Kafka server for the CVTS application
- Set up a Keycloak instance
- Set up a Jira instance to carry out the Jira migration
- Set up an IRI Workbench instance and Cosort for test data creation
- Set up test systems for Java web applications with JBoss8, JDK17 and Oracle and MySQL databases
- Set up the associated Oracle databases, including functionally relevant data
- Identified weaknesses in the technical communication between the specialized applications
- Built extensive business and technical knowledge of all Census specialized applications
- Supported and advised the departments on Census business processes in pre-production and production
- Performed load and performance tests with JMeter and Bash scripting
Discover over 15,000 top freelancers
Statistics of experts using JAX-WS
Aggregated from the professional profiles of matched freelancers.
Experience
23 years
Position duration
2.3 years
Positions per freelancer
13
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Banking and Finance, Insurance
Certification focus areas
Information Technology, Product Development, Project Management
Bachelor's degree or higher
100%
Master's degree or higher
64%
Doctorate
14%
Certifications per freelancer
2
Most common languages
German, English, French
Speak two or more languages
92%
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 Germany 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 Germany using JAX-WS
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.
JAX-WS 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 (92%)
- Banking and Finance (69%)
- Insurance (54%)
- Manufacturing (38%)
- Retail (38%)
- Telecommunication (38%)
- Automotive (35%)
- Professional Services (35%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
SOAP services with Java
JAX-WS, short for Java API for XML Web Services, is a Java technology for building and consuming SOAP-based web services. It supports contract-first and code-first development, with WSDL defining operations, messages and data types. Companies use it where strict interfaces, interoperability and established enterprise standards matter.
Contracts and service design
JAX-WS specialists turn business operations into stable service contracts and maintainable Java components. They work with generated client proxies, endpoint classes, JAXB data binding and SOAP handlers. Strong contract design reduces integration friction between Java, .NET and other enterprise systems.
- Create and review WSDL and XML Schema contracts
- Generate clients and service artifacts with wsimport or Maven tooling
- Configure endpoints, bindings, handlers and fault responses
Enterprise integration
JAX-WS commonly appears in insurance, manufacturing, logistics, public services and other environments with long-lived system integrations. In Germany, specialists may support distributed teams that connect legacy applications with newer Java services. They align technical delivery with existing security, governance and release processes.
Security and operations
Reliable SOAP services require more than endpoint code. Professionals handle WS-Security, certificates, authentication, encryption, signing, timeouts and fault handling. They also trace XML messages safely, configure application servers and investigate interoperability problems without exposing sensitive payloads.
- Integrate SOAP services with Spring, Jakarta EE or application servers
- Configure TLS, WS-Security policies and identity providers
- Test interoperability, performance and failure recovery
When freelance expertise helps
Companies bring in freelance JAX-WS experts during service migrations, partner integrations, production incidents and modernization programs. External support is useful when internal teams know the business domain but lack current SOAP, XML or Java web-service depth. It also helps when a WSDL must remain compatible with existing consumers.
- Replace or extend a legacy SOAP endpoint
- Connect external partners to an established service contract
- Resolve schema, namespace, binding or generated-client defects
- Document and hand over a service integration
What strong specialists bring
The best professionals understand both the Java runtime and the wire format exchanged by clients. They read WSDL, XSD and SOAP faults fluently, distinguish application defects from transport issues and test against real consumer expectations. They also explain trade-offs between JAX-WS, REST, Jakarta XML Web Services and messaging clearly, then leave behind reproducible builds, tests and operational documentation.
Frequently asked questions
What clients ask us most about JAX-WS — answered in short.
JAX-WS is used to build and consume SOAP web services in Java applications. It is well suited to structured enterprise integrations that rely on WSDL contracts, XML Schema, formal security policies and cross-platform interoperability.
JAX-WS provides SOAP-based communication with formal contracts, XML messaging and standards such as WS-Security. REST is often simpler for lightweight HTTP APIs, while JAX-WS remains useful when existing partners, governance rules or enterprise middleware depend on SOAP.
A strong JAX-WS specialist usually works comfortably with Java, WSDL, XSD, JAXB, SOAP headers and XML namespaces. Useful adjacent skills include Maven or Gradle, Spring or Jakarta EE, application servers, TLS, WS-Security, logging and automated integration testing.
The right level depends on the service scope and its integration risk. For a simple generated client, solid Java and XML skills may be enough; complex contracts, security policies, legacy consumers or production incidents call for a professional who has handled those conditions directly.
JAX-WS work is often suitable for remote collaboration because contracts, generated artifacts, tests and logs can be shared securely. On-site sessions may still help when access to restricted systems, internal middleware or partner testing environments is required, and German or English communication should match the project team.
A company should consider a JAX-WS expert when a SOAP integration is blocked by WSDL incompatibility, security configuration, generated-client errors or unclear fault behavior. Freelance support is also valuable for extending a legacy service without breaking established consumers.
Ask the JAX-WS professional to explain a service contract, a real interoperability issue and how they tested it. Look for clear reasoning about WSDL, XML Schema, SOAP faults, security, backward compatibility and operational monitoring, not just familiarity with code generation.
JAX-WS is not the default choice for every new API, but it remains relevant where SOAP contracts, WS-* standards or existing enterprise consumers are requirements. A capable professional can also assess whether REST, messaging or Jakarta XML Web Services is a better fit for a specific integration.
The average hourly rate of freelancers in Germany who have used JAX-WS in their recent projects is 97 €, which corresponds to a daily rate of about 777 € based on an 8-hour working day.
Of the freelancers in Germany who have used JAX-WS in their recent projects, 100% hold at least a Bachelor's degree, 64% hold at least a Master's degree, and 14% hold a doctorate.
On average, freelancers in Germany who have used JAX-WS in their recent projects have 23 years of professional experience, with a single engagement typically lasting around 2.3 years.
The most common languages among freelancers in Germany who have used JAX-WS in their recent projects are German (100%), English (92%), and French (19%).
The most common industries among freelancers in Germany who have used JAX-WS in their recent projects are Information Technology (92%), Banking and Finance (69%), and Insurance (54%).
The most common business areas among freelancers in Germany who have used JAX-WS in their recent projects are Information Technology (100%), Product Development (96%), and Quality Assurance (65%).
Main locations of FRATCH Experts, who have recently used JAX-WS
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.
Berlin Hamburg Munich Cologne Frankfurt Stuttgart Dusseldorf Leipzig Dortmund Essen Bremen Dresden Hanover Nuremberg Request a free demo
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Philipp Thomaschewski
FRATCH CEO
