XSD Experts in Cologne
, matched in minutes from over 15,000 CVsHire experts who define XML Schema models, validate complex data exchanges and connect XSD with Java, .NET or API workflows. FRATCH matches you quickly and precisely with vetted, available freelancers.
Meet FRATCH Experts in Cologne, who have recently used XSD
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
Assessment of the current state
Evaluation of Redgate Flyway functionalities
Concept development
Products: Redgate Flyway, GitHub, Quest, Erwin Data Modeller, Oracle, Atlassian Jira, Atlassian Confluence
Knowledge: Docker, Continuous Delivery, Continuous Integration, Redgate Flyway, Major Releases, Minor Releases
Stanislaus S.
Last position:
Security Consultant at Rohde & Schwarz AG at Star Labs GmbH
- Worked on FPGA enhanced network encryption device with secure boot, TPM2.0 and smart card integration for BSI approved usage with Post Quantum Cryptography
- Developed and audited Linux drivers
- Collaborated using GitLab, Gerrit, Confluence and Jira
- Technologies: C, C++, Secure Boot
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
Robert M.
Last position:
Air traffic tax German Customs Administration SOAP Webservices Client Requests at Team GmbH
In the citizens' and business customer portal of the Customs Administration, airlines submit applications for departures and landings every month
These applications are forwarded to the caseworkers via SOAP web service and, after review and processing, any queries or notifications are returned via SOAP web service
PL/SQL programming of SOAP webservices client requests for HTTP/XML message exchange between the BuG portal and the caseworkers
New creation and change requests for Forms and Reports 12 modules
Forms applications start and read SOAP webservice requests via PL/SQL packages, process them and send Reports 12 documents to the airlines
Dirk G.
Last position:
Senior Software Engineer, Software Architect at International Automotive Company
- Implementation of C and ARXML code generators
- Design and extension of local REST clients
- C# / REST / XSD / Embedded / WinForms
Jacqueline K.
Last position:
OTTO
- Design, development, and monitoring of microservices
- Migrating functions from a monolithic system into separate microservices
- Designing and implementing new microservices (backend and frontend)
- Setting up and maintaining a CI/CD pipeline (GitHub Actions)
- Configuring cloud infrastructure with AWS CDK and Terraform
- Designing and implementing event-driven communication with AWS SNS/SQS and Apache Kafka
- Ensuring code quality through Test Driven Development (TDD), static code analysis, and Clean Code
Discover over 15,000 top freelancers
Statistics of experts using XSD
Aggregated from the professional profiles of matched freelancers.
Experience
21 years (Germany: 25 years)
Position duration
1.5 years (Germany: 2 years)
Positions per freelancer
16 (Germany: 18)
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Banking and Finance, Manufacturing
Bachelor's degree or higher
100% (Germany: 86%)
Master's degree or higher
80% (Germany: 47%)
Doctorate
20% (Germany: 7%)
Certifications per freelancer
1 (Germany: 2)
Most common languages
German, English, Russian
Speak two or more languages
83% (Germany: 96%)
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 Cologne 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 Cologne using XSD
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.
XSD 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 (83%)
- Banking and Finance (67%)
- Manufacturing (67%)
- Government and Administration (67%)
- Insurance (50%)
- Transportation (50%)
- Aerospace and Defense (33%)
- Automotive (33%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
XML contracts
XSD, short for XML Schema Definition, describes the structure, data types and rules of XML documents. Companies use it to create dependable contracts between applications, services and organizations. Unlike informal XML conventions, an XSD can validate required elements, attributes, namespaces, ordering and value restrictions.
Data exchange
XSD is common wherever systems exchange structured XML and need clear validation. It supports regulated, partner-facing and integration-heavy workflows across industries.
- Define purchase orders, invoices and customer messages
- Validate SOAP payloads and enterprise service documents
- Model configuration files and business documents
- Maintain schemas for partner and government interfaces
Schema tooling
Strong XSD specialists work with XML namespaces, complex types, simple types, restrictions, extensions and substitution groups. They use validators, XML editors and schema-generation tools, then connect the result to application code through JAXB, .NET serialization, Apache CXF or similar stacks. XPath, XSLT and WSDL knowledge often matters because schemas rarely stand alone.
When to hire
Freelance expertise helps when an existing schema is inconsistent, undocumented or difficult to evolve without breaking consumers. It is also useful during an integration launch, a migration from legacy XML contracts, or a review of validation failures across several systems. Cologne teams can combine on-site workshops with remote implementation, depending on access and collaboration needs.
Reliable delivery
A capable professional starts by clarifying business meanings, message ownership and compatibility requirements. They design reusable types without creating unnecessary coupling, test valid and invalid samples, and document namespace and versioning decisions. They also check how validators behave in the actual runtime rather than relying only on an editor preview.
Choosing expertise
Look for evidence of shipped XML contracts, not only familiarity with schema syntax. Useful signals include thoughtful handling of optional and repeated elements, stable versioning, readable documentation and tests for edge cases. For Cologne projects, confirm German or English communication needs, availability for stakeholder workshops and experience with the surrounding integration stack.
Frequently asked questions
Not sure where to start with XSD? These answers cover the essentials.
XSD defines the permitted structure and content of XML documents. It can require elements, restrict values, describe data types and validate messages before systems process or exchange them.
XSD provides richer data types, namespaces and reusable type definitions than a DTD, making it better suited to complex enterprise contracts. JSON Schema serves a similar purpose for JSON, while XSD remains the natural choice when XML, SOAP or established XML standards are involved.
A strong XSD professional often also understands XML namespaces, XPath, XSLT, WSDL and SOAP. Experience with JAXB, .NET serialization, API integration and automated validation helps turn a schema into a dependable application contract.
The need depends on the contract and its consequences. A simple document may need focused schema design, while a shared enterprise model calls for experience with compatibility, namespaces, versioning, generated bindings and difficult validation cases.
Yes. XSD work is often well suited to remote collaboration because schemas, sample documents and validation tests can be reviewed digitally. On-site sessions in Cologne can still help when domain experts, partner teams or legacy systems need close coordination.
Ask for examples of schema decisions, test coverage and versioning practices, while protecting confidential details. A good XSD specialist explains why types, namespaces and constraints were chosen and can show how invalid documents are diagnosed.
Poorly chosen global types, unclear namespaces and undocumented dependencies can make small changes break many consumers. XSD contracts also become fragile when teams generate code without reviewing the resulting model or skip tests for real partner messages.
Clarify who owns the contract, which consumers must remain compatible and how validation is performed in production. A professional working with XSD should expect to inspect sample XML, tooling, generated bindings and release processes before proposing structural changes.
The average hourly rate of freelancers in Cologne, Germany who have used XSD in their recent projects is 92 €, which corresponds to a daily rate of about 740 € based on an 8-hour working day.
Of the freelancers in Cologne, Germany who have used XSD in their recent projects, 100% hold at least a Bachelor's degree, 80% hold at least a Master's degree, and 20% hold a doctorate.
On average, freelancers in Cologne, Germany who have used XSD in their recent projects have 21 years of professional experience, with a single engagement typically lasting around 1.5 years.
The most common languages among freelancers in Cologne, Germany who have used XSD in their recent projects are German (100%), English (83%), and Russian (33%).
The most common industries among freelancers in Cologne, Germany who have used XSD in their recent projects are Information Technology (83%), Banking and Finance (67%), and Manufacturing (67%).
The most common business areas among freelancers in Cologne, Germany who have used XSD in their recent projects are Information Technology (100%), Product Development (100%), and Quality Assurance (83%).
Main locations of FRATCH Experts, who have recently used XSD
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 
Munich Request a free demo
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