XSLT Experts in Cologne
matched in minutes by AIHire experts who transform XML into HTML, PDF, and other structured formats, while connecting XSLT with XPath, XSL-FO, and XML pipelines. FRATCH quickly matches you with vetted, available freelancers who fit your project.
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
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
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.
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
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
Thomas P.
Last position:
Freelance Software Architect at Self-employed
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
2.4 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: 54%)
Doctorate
33% (Germany: 9%)
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 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 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 29 Oct 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 declarative language for transforming XML documents into other formats. Specialists use templates, XPath expressions, parameters, and named rules to turn structured source data into HTML, text, XML, or documents prepared for PDF rendering. It is valuable when reliable, repeatable output matters more than manual formatting.
Formats and outputs
XSLT supports content workflows across publishing, public administration, finance, manufacturing, and enterprise integration. Typical deliverables include:
- XML-to-HTML views for portals and customer applications
- XML-to-XML conversions between schemas or partner formats
- Data preparation for XSL-FO and PDF generation
- Reusable stylesheets for invoices, reports, and catalogues
Ecosystem and tooling
Strong XSLT specialists work comfortably with XPath and understand XML Schema, namespaces, validation, and document structure. Depending on the environment, they may use XSL-FO processors such as Apache FOP, Java or .NET XML APIs, Saxon, command-line transformation tools, and continuous integration checks. Version differences between XSLT 1.0, 2.0, and 3.0 can affect the design.
When expertise matters
Companies often bring in freelance XSLT expertise when legacy XML workflows need maintenance, partner schemas change, or a transformation must be made easier to test and extend. A specialist can also replace fragile string processing with clear templates, improve namespace handling, and document complex stylesheet logic. In Cologne, local teams can combine on-site workshops with remote delivery for distributed programmes.
Project fit and collaboration
A useful brief defines the source XML, required output, validation rules, processor, and representative edge cases. XSLT work may sit beside Java, .NET, REST or SOAP integrations, databases, content management systems, and release pipelines. Clear sample files and acceptance criteria help a remote professional work effectively with teams in Cologne and across Germany.
Quality in practice
The best professionals make transformations readable, modular, and predictable. They test namespaces, optional nodes, repeated structures, malformed input, encoding, sorting, grouping, and output escaping rather than checking only a simple example. They explain processor constraints, choose appropriate XPath patterns, and leave behind maintainable stylesheets with documented assumptions.
Frequently asked questions
Key details about XSLT, drawn from the questions we get asked most.
XSLT is used to transform XML into HTML, text, other XML structures, or input for PDF rendering. Companies use it for reports, invoices, publishing workflows, data exchange, and schema conversions.
XSLT is purpose-built for structured XML transformation and keeps rules separate from source data. JSON-focused tools, general-purpose code, or template engines may be better when the input is not XML or when transformation logic depends heavily on application state.
A strong XSLT professional usually understands XPath, XML Schema, namespaces, validation, and document encoding. Useful adjacent skills include XSL-FO, Saxon, Apache FOP, Java or .NET XML APIs, and integration testing.
A capable XSLT freelancer should have handled production transformations with real-world namespaces, optional elements, repeated structures, and changing schemas. Ask for examples of maintainable stylesheets, processor-specific decisions, and tests for unusual input.
XSLT work is often well suited to remote collaboration because source files, stylesheets, tests, and output samples can be reviewed digitally. On-site workshops in Cologne can still help when teams need to map legacy workflows or agree on partner formats.
Review whether the XSLT solution handles namespaces, missing data, encoding, sorting, grouping, and escaping correctly. Good quality also means readable templates, focused XPath expressions, automated tests, clear assumptions, and predictable output across the chosen processor.
XSLT 1.0 can remain appropriate when an established processor or application requires it and the transformation is stable. For new work, a specialist should assess whether XSLT 2.0 or 3.0 features would simplify grouping, functions, regular expressions, or larger document workflows.
Before starting XSLT work, clarify the processor, language version, source and target schemas, output method, validation rules, sample documents, and deployment process. Also confirm how edge cases are tested and who owns changes to the input format.
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 2.4 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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Philipp Thomaschewski
FRATCH CEO
