XSLT Experts in Cologne
matched in minutes from over 15,000 CVsHire experts who convert XML into HTML, PDF and structured business documents, build reusable transformation templates, and connect XSLT with XPath, XSL-FO and enterprise data workflows. FRATCH matches you quickly with precise, vetted and available freelancers.
Meet FRATCH Experts in Cologne, who have recently used XSLT
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
Thomas P.
Last position:
Freelance Software Architect at Self-employed
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
Jens H.
Last position:
#52 Test Manager in Safety-Critical Infrastructure at Telecommunications Company
- Network elements, network, operational and operator-related systems
- Supporting around 20 different products (managed agile)
- Requirements analysis and management (functional and non-functional)
- Test concept and planning (scope, test phases, effort, schedule, resources, organization, etc.)
- Aligning approach with clients and service providers
- Managing and assisting in creation of test cases for system, integration and end-to-end tests
- Guiding and supporting test execution
- Defect management and planning bug fixes with external providers
- Preparing and facilitating workshops
- Regular reporting and creating automated test reports
- Further development of agile testing methodology and configuration of supporting tools
- Conceptual support in developing a quality seal for rating product and service quality of internal and external providers
- Requirements engineering based on ISO/IEC 25010, Scrum, SaFE
- BMC Remedy, Atlassian Confluence, Atlassian Jira (including plugins Xray, Structure), Microsoft Office (incl. Visio), Obsidian, doxis document management system, Gitlab, Obsidian
Andreas K.
Last position:
Backend Developer at Univention GmbH
- Developed a SCIM-compliant Python interface to connect external systems
- Expanded and enhanced UCS modules in Python
- Extended and newly developed Helm charts for container orchestration in Kubernetes
- Maintained and further developed CI/CD pipelines in GitLab
- Implemented automated tests with Pytest and Playwright
'Nubus' is based on a microservice architecture, relies on open source technologies, and runs in Docker containers.
UCS is an IAM complete solution based on Debian, used as an alternative to Microsoft's Active Directory. The work was characterized by the close integration of infrastructure and application logic.
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
Peter B.
Last position:
Data Warehouse Consultant (Development and Analysis) at Atruvia AG
- Developed and enhanced ETL loading jobs with IBM DataStage and optimized SQL in an IBM DB2 environment as part of the Agree21 data migration
- Analyzed data quality and developed test procedures
- Created PowerShell scripts and documented GIT deployment processes
- Technologies: RedHat Linux, IBM DB2 with DBVisualizer, IBM InfoSphere DataStage 11.7, JIRA, TortoiseGIT, TortoiseSVN, PowerShell scripts
Louis N.
Last position:
Specialist in Adobe Experience Manager & Microservices at Nguenkam Consulting & Engineering
Java 11/21
Springboot
Swagger/OpenApi
Azure Pipelines
Trivy Integration
Apache Sling
OSGI
Java Content Repository (JCR)
Apache Jackrabbit Oak
Adobe HTL
GraphQL
Maven
GitLab
IntelliJ
Azure Cloud
Azure DevOps
Terraform
AEM specialist in the Scrum team
Development and deployment of microservices via Open API interfaces
Operation of microservices in the Azure Cloud
Implementation of AEM modules and integration with microservices
Member of the knowledge transfer team and a backend coordination team
Ingo C.
Last position:
Founder, freelance CMS expert at CMS Consulting Cousin
- Freelance work as a CMS expert
Jacqueline H.
Last position:
Kitchen Appliance Manufacturer
Setting up and enhancing an international subscription management system
Migrating and decommissioning a Hybris-SAP system and integrating Zuora
Implementing numerous interfaces to various systems (external and internal)
Setting up and improving monitoring with Grafana, Prometheus, and Databricks
Introducing logging with Loki
Implementing business requirements using jQuery, Thymeleaf, Spring Boot, Java, Go, and Python
Adjusting and extending the GitLab CI pipelines
Setting up and extending infrastructure as code with Terraform and ArgoCD on AWS
Setting up and running E2E and performance tests
Expanding the Databricks business intelligence solution to provide various KPIs
Responsibilities: Architecture, DevOps, development, unit tests, coaching employees and apprentices, E2E, smoke, and integration tests, agile methods consulting (Kanban, Scrum)
Technologies and methods: Java, Go, Kotlin, Node.js, Spring Boot, SOAP/REST, Quarkus, Thymeleaf, Vaadin, Slack, Jira, Confluence, IntelliJ, GitLab, SQS, Kafka, AWS, Kubernetes, Terraform, Maven, Gradle, GitLab CI, Databricks
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 XSLT
Aggregated from the professional profiles of matched freelancers.
Experience
24 years (Germany: 25 years)
Position duration
2.3 years (Germany: 3.2 years)
Positions per freelancer
17
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Insurance, Banking and Finance
Certification focus areas
Information Technology, Product Development, Project Management
Bachelor's degree or higher
83% (Germany: 86%)
Master's degree or higher
83% (Germany: 55%)
Doctorate
33% (Germany: 10%)
Certifications per freelancer
1 (Germany: 3)
Most common languages
German, English, French
Speak two or more languages
100% (Germany: 96%)
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 Cologne 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 Cologne using XSLT
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.
XSLT 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 (91%)
- Insurance (64%)
- Banking and Finance (55%)
- Education (36%)
- Transportation (36%)
- Manufacturing (36%)
- Professional Services (36%)
- Government and Administration (36%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
XML Transformations
XSLT is a language for transforming XML documents into other formats or XML structures. Companies use it to create HTML pages, structured exports, reports and machine-readable messages while keeping source data separate from presentation. It is well suited to repeatable, rule-based document processing.
XPath and Templates
Strong XSLT work depends on precise XPath expressions, template matching and controlled output rules. Specialists design transformations that handle namespaces, optional elements, attributes, sorting and grouping without becoming difficult to maintain. They also choose between XSLT versions according to the runtime and the project’s compatibility needs.
Outputs and Standards
XSLT can produce XML, HTML and text, while XSL-FO supports paginated documents that are rendered into PDF through tools such as Apache FOP. The surrounding ecosystem may include XML Schema, Relax NG, Schematron, Saxon and Java-based processing pipelines. Familiarity with Unicode, serialization and validation is often essential.
Typical Projects
- Convert XML feeds into web-ready HTML or partner-specific XML
- Generate invoices, statements, catalogues and regulatory documents
- Migrate legacy XML formats into modern schemas
- Create reusable transformations for publishing and content systems
- Validate and test document workflows across multiple output formats
XSLT appears in publishing, logistics, finance, public administration and manufacturing systems. It is especially useful where a company receives structured XML from several sources and needs consistent, auditable output.
When to Bring Expertise
- Existing stylesheets are slow, fragile or hard to extend
- A new XML schema requires several reliable output formats
- PDF generation needs accurate layout and pagination
- Integrations fail because of namespaces, encoding or validation rules
Freelance expertise helps when internal teams understand the business data but lack deep transformation knowledge. In Cologne, on-site workshops can support teams handling local publishing, industrial or enterprise workflows, while remote collaboration works well for stylesheet reviews and delivery.
Quality Signals
A strong professional separates transformation logic from presentation concerns and documents assumptions about schemas, namespaces and processor behavior. They test representative XML, malformed input and edge cases rather than relying only on a successful sample. Clear version control, automated regression tests and measured processor performance protect the workflow after handover.
Look for someone who can explain why a template matches, how output is validated and which parts depend on Saxon, XSL-FO or another runtime. Experience with Java, .NET, XML APIs, content management systems or integration tooling adds value when XSLT sits inside a larger application. German or English communication may both suit a Cologne-based project, depending on the team.
Frequently asked questions
Key details about XSLT, drawn from the questions we get asked most.
XSLT transforms XML into XML, HTML, text or document-oriented output. Companies use it for feeds, invoices, catalogues, reports, publishing workflows and integrations between systems with different schemas.
XSLT is designed around XML trees, namespaces, XPath and template rules, so it is a strong fit for schema-heavy document workflows. JSON-focused tools may be simpler for API payloads, but they do not replace XSLT when XML validation, mixed content or established stylesheet libraries matter.
A capable XSLT specialist usually also understands XPath, XML Schema, namespace handling and serialization. Knowledge of XSL-FO, Apache FOP, Saxon, Java, .NET, testing and content management systems can be important for production delivery.
A small stylesheet change may need focused knowledge of XSLT, XPath and the project’s processor. A migration or document platform calls for deeper skill in schema design, performance, testing, version compatibility and failure handling, so assess the scope rather than relying on a generic experience label.
Yes. XSLT work is often well suited to remote collaboration because schemas, stylesheets, test files and transformation results can be reviewed digitally. Cologne-based teams may still prefer occasional on-site sessions for requirements workshops, especially when business users own complex document rules.
A strong XSLT professional checks the processor before choosing language features. XSLT 1.0 remains common in older platforms, while newer versions provide richer functions and grouping options; compatibility must be tested against the actual runtime, such as Saxon or an application server.
Ask the XSLT professional to show how the stylesheet handles namespaces, missing data, repeated structures and invalid input. Good work includes readable templates, automated regression cases, schema validation and clear notes on processor-specific behavior.
Poor XSLT performance often comes from repeated broad XPath searches, unnecessary document loading or inefficient recursion. Maintainability suffers when templates mix business rules with formatting, namespaces are unclear or tests cover only one ideal input document.
The average hourly rate of freelancers in Cologne, Germany who have used XSLT in their recent projects is 103 €, which corresponds to a daily rate of about 824 € based on an 8-hour working day.
Of the freelancers in Cologne, Germany who have used XSLT in their recent projects, 83% hold at least a Bachelor's degree, 83% hold at least a Master's degree, and 33% hold a doctorate.
On average, freelancers in Cologne, Germany who have used XSLT in their recent projects have 24 years of professional experience, with a single engagement typically lasting around 2.3 years.
The most common languages among freelancers in Cologne, Germany who have used XSLT in their recent projects are German (100%), English (100%), and French (45%).
The most common industries among freelancers in Cologne, Germany who have used XSLT in their recent projects are Information Technology (91%), Insurance (64%), and Banking and Finance (55%).
The most common business areas among freelancers in Cologne, Germany who have used XSLT in their recent projects are Information Technology (100%), Product Development (91%), and Quality Assurance (82%).
Main locations of FRATCH Experts, who have recently used XSLT
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 
Frankfurt 
Stuttgart Request a free demo
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Philipp Thomaschewski
FRATCH CEO
