XML Experts in Dusseldorf
matched in minutes with vetted, available freelance specialistsHire experts who design XML schemas, transform documents with XSLT and connect enterprise systems through SOAP or XML-based APIs. FRATCH quickly matches you with precise, vetted and available freelance professionals.
Meet FRATCH Experts in Dusseldorf, who have recently used XML
Emre S.
Last position:
IT Project Manager | SAP E-Invoicing Outbound at Rohde & Schwarz
Project: Introduction of statutory-compliant electronic invoicing (outbound, Germany) in SAP for an international technology group.
- Project management: Planning, steering and reporting of the E-Invoicing outbound rollout across all affected business areas, including budget and resource coordination.
- UAT: Structured user acceptance test with key users per business area, test cases per invoice scenario, and consolidated test results for decision making.
- Defect management: Handover and tracking of defects in Jira, including validation of the generated invoices against the statutory schemas.
- Cutover, go-live and hypercare: Readiness checks and cutover planning aligned with the statutory deadlines, coordination of go-live and stabilization during hypercare.
- Stakeholder management and reporting: Alignment with Finance, Tax, business departments and IT, preparation of status reports and decision papers, and consistent follow-up of open items.
- Change management and documentation: Communicated process changes to the business departments, enabled key users, and created process and compliance documentation to ensure traceability and audit readiness.
Asen K.
Last position:
External Product Owner / Project Manager at Publicplan GmbH
- Overall project planning for resources, budget, costs, license and service contracts, cost optimization and negotiations
- Leading and managing the project team and achieving project goals
- Leading digitalization projects and their phases, including concept development, planning, change and requirements management, configuration, implementation, testing, interfaces, communication and approval
- Holding planning meetings
- Organizing, designing and running team, client and requirements workshops with up to 50 participants at operational and management level
- Main point of contact for business and technical topics, as well as project coordination
- Creating and maintaining backlogs (user stories and EPICs) in Jira, translating requirements into user stories and prioritizing them
- Approving and publishing online services in the Wirtschafts-Service-Portal.NRW (WSP.NRW)
- Preparing and maintaining project documentation
- Planning and designing the nationwide rollout/reuse under the Einer-für-Alle principle via WSP/FIT-Connect
- Communication between stakeholders, clients, public authorities and the Ministry of Economic Affairs, Industry, Climate Action and Energy (MWIKE)
- Working according to the SCRUM methodology
Humayun S.
Last position:
Senior Test Manager - Lead at Star Finanz GmbH
- QA Lead for end-to-end quality assurance of the Sparkasse & Sparkasse Business banking apps (iOS/Android); design and implementation of the Test Strategy including functional testing, regression testing, and UAT for eID, Push Notifications, and white-label components
- Creation and maintenance of test concepts and test plans in TestRail; structured Defect Management and error analysis; stakeholder management and risk management for the early identification of critical quality risks
- Accessibility Testing according to WCAG 2.1 (iOS/Android); coordination of AI-supported test automation and optimization of test processes to shorten release cycles
- Release Management: planning, management, and coordination of all test activities; status reporting to management and stakeholders; quality assessment of releases and release recommendations in an Agile/Scrum environment
- Challenge: Highly complex build and release process across several Sparkasse institutions; close coordination with the DevOps team to stabilize the CI/CD pipeline and ensure reproducible test builds before every release.
Tools: Jira, Confluence, TestRail, Android Studio, Xcode, Firebase, Jenkins, GA4
- Success: Successful launch of the eID authentication process - quality assurance ensured for 50+ Sparkasse institutions
Peter S.
Last position:
SAP FI/CO/PSM Consulting at Federal authority
- SAP ERP/ECC, SAP S/4 Hana
- Analysis and documentation of SAP FI/CO, PSM, PSCD customizing
- Analysis, consulting and documentation of S/4 Hana apps for defining and executing statutory reports
- Clarification of the prerequisites for using S/4 Hana apps to define and execute statutory reports
- Analysis and documentation of customizing for in-house developments
- Consulting on the integration of SAP FI/CO as well as PSM, PSM-FM (Funds Management), Contract Accounts Receivable and Payable (PSCD)
- Consulting and documentation of customizing adjustments in SAP FI/CO, PSM, PSM-FM, PSCD when introducing new company codes and other organizational structures
- Consulting and documentation of necessary process adjustments
Jürgen S.
Last position:
IT – Consultant / Analyst / Developer / Tester / Support at Automotive manufacturer
- Analysis, software development/adaptation and testing of various transaction and batch objects
- Execution of specialist integration and regression tests on TEST and QA platforms under z/OS for subsequent implementation in production
- Hardware / software / tools: IBM-MVS, z/OS, JES2/3, TSO-ISPF, JCL, DB2, SQL, SQL/PL, QMF, QMF for Work-Stations, SPUFI, FileAid, IMS-DB/DC, MFS, XPEDITER, COBOL, REXX, Windows-10, MS-Office-365, MS-Teams, batch job management via OPC, BETA92, RVS, BVB, ABL, DIALOGplus, PROBA, PRODPR (VW internal systems), JIRA, CONFLUENCE
Thorsten L.
Last position:
Senior Security Analyst
- Analysis and remediation of security vulnerabilities in a risk assessment system for energy trading
- System analysis
- Threat modeling
- Decision-making on vulnerability mitigation strategies
- Implementation of vulnerability detection mechanisms
- Security scans
- DevSecOps practices
- Technical environment: Visual Studio Code, JetBrains Suite, MS Threat Modeling Tool, DevSecOps, Git, AWS, DynamoDB, SQL Server, Endur, Snowflake, Orca
- Languages: C#, JavaScript, TypeScript, Python, PowerShell, Bash, Terraform, SQL
Andreas G.
Last position:
Senior Fullstack .NET (Core) & Angular Developer at IT Service Provider
- Supporting several agile teams in the new product development of an enterprise CRM and ERP application
- Web frontend development with Angular 17–21 (microfrontends, Domain-Driven Design, MDB-Bootstrap)
- Backend development with C# and .NET 7–10, MongoDB, MassTransit, RabbitMQ, Entity Framework Core, ElasticSearch (microservices, DDD)
- Technical feature design for assigned tasks
- Technical architecture design including forward-looking planning of AI-supported extension options
- Proof-of-concept implementation of AI-supported workflows with n8n and a locally hosted LLM (Ollama)
- Coordination with stakeholders and Product Owners, support with sprint planning
Result: Delivery of production-ready microservices and frontend modules in agile sprint cycles.
Environment: .NET 7–10 · Angular 17–21 · C# · TypeScript · OpenAPI · Microfrontends · DDD · Kubernetes · Docker · Helm · MS SQL Server · PostgreSQL · MongoDB · MassTransit · RabbitMQ · EF Core · ElasticSearch · Kibana · Azure DevOps · KeyCloak · n8n · Ollama
Frank M.
Last position:
Plan & Code Automation UG
- Operations and rehabilitation
- During this time, development of:
- Websites zentivo-holding.com zyntra3d.com plancodeautomation.com
- Stock trading software
- Automated trading of all financial instruments listed on the stock exchange, with AI integration
- Project management software
- Automated project administration and project management with automated creation of material lists, electrical schematics, PLC programs, HMI programs, AI functions in control technology, project schedules and cost calculations, as well as quotation preparation and cost tracking.
- AI integration
- 3D printing management
- Various methods for creating 3D models from photos, videos or drawings.
- Creation of files suitable for 3D printing, 3D printer management via API.
- AI integration
Tools: Visual Studio, Codex and Cursor, HTML, Java, Python, PHP, C#, Python, SQL, Jason Script.
Daniel P.
Last position:
Freelance specialist in industrial automation technology at dPSolutions
- Self-employed PLC and software specialist focusing on automation and special-purpose machinery
- Programming, modernization, expansion and optimization of production systems, focusing on increased efficiency, data transparency and system integration
- PLC programming and safety with Siemens S7 Classic/TIA Portal, Beckhoff TwinCAT 2/3 and CoDeSys
- Development of high-level language software and database applications (.NET / C#, C++, Visual Basic .NET, Borland/Embarcadero C++)
- Development of custom software solutions for industrial automation, including embedded systems (Raspberry Pi, Arduino, NodeMCU, ESP8266)
- Integration of external systems such as reading devices, printers, scales, scanners and cameras, as well as various bus systems (Ethernet, Profinet, Profibus, EtherCAT, CAN bus, RS232, TCP/IP)
- Creation of visualizations and HMI applications with Siemens WinCC flexible, Beckhoff HMI and .NET frontends
- Planning, development and integration of machine vision solutions (Keyence, Cognex, AVS Alfavision, camera systems) in PLC and PC environments
- Design and implementation of process data collection systems and traceability solutions (100% traceability) based on Microsoft SQL Server (Compact, Express, Server), including stored procedures and direct PLC-SQL communication
- Creation of software and PLC concepts, standard function blocks and project libraries for PLC and high-level language projects
- Planning and programming of conveyor, inspection, assembly, packaging and grinding systems in industries such as automotive, chemical, food, electronics, machinery and systems engineering
- Conducting workshops and training on Siemens TIA Portal, STEP7 Classic, Beckhoff TwinCAT (including TwinSAFE), as well as topics such as architectures, safety, database integration and documentation
- Creation of technical documentation, manuals, training materials and class documentation with Microsoft Office and Doxygen
- Project management tasks from requirements analysis through planning, concept development and supplier coordination to commissioning, production support and customer support
Orhan Y.
Last position:
SAP Senior Consultant OTC/MM/WM/LE/CS/PS/GTS, C4C-Cloud (Sales, Services, E-Commerce) at High-Technologie
- Support and consulting for the integration of SAP ECC into an SAP S/4HANA system, retirement of legacy systems, implementation, and process optimization in the new harmonized system
- Project implementation of S/4HANA Cloud Private & Public Sales & Services with SAP SCM/OTC/MM/LE/CS/PS, S/4HANA Cloud, CPI, BTP, EDI, IDOC, ABAP, User-Exit, SolMan, ITIL, SAP Cloud AL
- Customizing and optimization in OTC and MM, including condition maintenance, document type and item category extensions, integration with FI/CO, scheduling agreement configuration, material master and purchasing info record maintenance, release procedures, message control, and master data quality
- Ensuring integration of PTP with FI/CO, SD, and WM, process analysis, and efficiency improvement for the S/4HANA environment
- Process modeling in Signavio, workshops, and trainings
- 2nd & 3rd level support in OTC, MM, CS, PS, C4C Sales & Services, GTS, and MDG: incident and change tickets, feasibility analyses, service management, embedded analytics, customizing, tests, documentation, training, debugging, IDOC/EDI monitoring
- SAP S/4HANA migration: data migration, system harmonization, global rollouts, and template development
- ABAP development and optimization: reports, dialog programs, user exits, IDOC/EDI monitoring
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
Younes H.
Last position:
Senior Backend Developer at PTA
- Development and maintenance of database-driven applications for managing supplier and food contracts, with extensive use of Oracle PL/SQL for complex business logic and data processing
- Optimization of PL/SQL procedures, functions, and triggers to ensure the performance and scalability of Oracle database solutions
- Ensuring compliance with best practices in PL/SQL development and implementing standards for code quality and data integrity
- Close collaboration with backend and frontend teams to ensure smooth integration between the Oracle database, C#-based APIs, and Azure cloud services
Alexander R.
Last position:
Business Analyst at Financial Services Provider Landesbank
The Helaba ATLAS project aims to modernize core systems and make them future-proof. As part of the subproject, the existing legacy system for international payments is being replaced by a modern web-based application.
- Analysis of functional and technical requirements
- Analysis and optimization of business processes
- Process modeling
- Preparation and facilitation of workshops
- Defining project scope and prioritizing requirements
- Business process management (analysis, modeling, and optimization)
- Specification of user stories
- Designing business and authorization concepts
- Testing and acceptance
- Designing mockups in Figma
- Creating the UI/UX style guide for web applications Approach: Scrum (agile) Technologies: Jira, Confluence, MS Teams, Conceptboard, Java, Vaadin, Figma
Adnan K.
Last position:
Chief Information Officer at ARLANXEO Deutschland GmbH
- Executed post-carve-out stabilization, system consolidation and cybersecurity uplift. Re-assessed system landscape and assets and designed new IT strategy for future. Implemented new IT operating model focusing on product-centric organization and re-internalization of critical resources.
- Successfully designed new IT operating model of the company, based on massive reduction of external dependencies, insourcing of key positions and upskilling of employees.
- Massive reduction of IT cost in the first three years (-40m$), bringing IT spend level below Gartner industry benchmark (1.27%).
- Introduced new product-centric organization based on fusion teams between business and IT across the company.
- Administered implementation of corporate-wide IT/OT cybersecurity program with more than 60 projects.
- Continuous improvement of enterprise IT/OT cybersecurity maturity level with significant increase in the first two years (CMMI >3.5, C2M2 >2.5).
- Governed successful implementation of the business transformation program within IT area by overachieving the savings target by $8m.
- Initiated and created new cloud-based data management platform based on best-in-class technology.
- Implemented first company-wide Microsoft Copilot AI program based on various business cases, leveraging GenAI and AgenticAI.
Thorsten O.
Last position:
Workstream Lead (WS) at Bank-Verlag GmbH
- Introduction of giro card with Visa Debit card payment function (Combocard) for Commerzbank
- Support for the Card Processing Team (card processing; Clearing & Settlement incl. Dispute Management teams) in project work
- Creation of requirements for the Clearing & Settlement team, Authorization team (AZ) and Card Production team (KP) as part of a requirements catalog
- Requirements engineering (requirements management) with business contact person
- Participation in workstream meetings between VISA Inc., SRC Security Research & Consulting GmbH, Commerzbank AG and consulting firms (PwC and Senacor Technologies AG)
- Sprint planning with Jira tickets of type Task and use of Confluence
- Creation and presentation of weekly status reports for the Clearing & Settlement, Dispute Management and Reporting & GUI workstreams
- Coordination with network and file transfer teams for connection tests of new interfaces, e.g. setup of host keys, use of VPN or sipnet connections
- Coordination of the delivery of test files, e.g. exchange rates (FX rates; TC 56 of VISA rates), VISA Debit and Credit transactions (format Base II) and EANSS/ISS Base II clearing files to the Debit Clearing System (DCS)
- Conducting coordination meetings on the use of Visanet Settlement Service (VSS) and PSD2 reports and payment traffic statistics (ZVS)
- Organizing workshops with FiServ (First Data) on Dispute Management and complaint handling
- Setup and maintenance of Open Point List (OPL) in Confluence
- Technologies/methods: Jira, Confluence, giro card, VISA Debit card, payments, Kanban board, BIN, routing, CIQ, VPAY, ScalaTest, Dispute Management
Discover over 15,000 top freelancers
Statistics of experts using XML
Aggregated from the professional profiles of matched freelancers.
Experience
23 years
Position duration
1.7 years (Germany: 5.2 years)
Positions per freelancer
20 (Germany: 16)
Top business areas
Information Technology, Project Management, Product Development
Top industries
Information Technology, Retail, Banking and Finance
Certification focus areas
Information Technology, Product Development, Project Management
Bachelor's degree or higher
90% (Germany: 88%)
Master's degree or higher
55%
Doctorate
5% (Germany: 9%)
Certifications per freelancer
3
Most common languages
German, English, French
Speak two or more languages
96% (Germany: 97%)
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 Dusseldorf 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 Dusseldorf using XML
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.
XML 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%)
- Retail (65%)
- Banking and Finance (58%)
- Manufacturing (58%)
- Professional Services (50%)
- Transportation (46%)
- Government and Administration (46%)
- Telecommunication (46%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
XML at a glance
XML, or Extensible Markup Language, structures text so systems can store, validate and exchange data consistently. It remains central to publishing, financial messaging, enterprise integration, configuration files and document management. Its readable format also supports long-term data preservation.
Schemas and validation
XML professionals define reliable document structures with XML Schema Definition (XSD), DTD or Relax NG. They set element relationships, data types, namespaces and validation rules so incoming documents can be checked before processing. Strong schema design prevents ambiguity and keeps contracts stable as systems evolve.
- Model XML documents and reusable schemas
- Validate payloads against XSD or Relax NG
- Manage namespaces, versions and compatibility
Transformations and tooling
XSLT converts XML into HTML, text, PDF-ready content or another XML vocabulary, often with XPath for precise selection. Experts also work with DOM, SAX and streaming parsers, XML editors, validators and command-line tools. Java, .NET, Python and PHP ecosystems all provide mature XML libraries.
Where companies use it
XML appears wherever structured data must cross organizational or technical boundaries. In Dusseldorf, companies in manufacturing, logistics, finance, healthcare and public services may rely on it for established integrations and regulated documents.
- Connect SOAP services and enterprise applications
- Exchange invoices, orders and supply-chain messages
- Publish structured content across channels
- Maintain configuration and metadata repositories
When specialists add value
Companies bring in freelance XML professionals for migrations, broken integrations, schema redesigns and document-standard projects. They can trace namespace or encoding errors, improve parser performance and document undocumented interfaces. Local teams may work on-site in Dusseldorf or collaborate remotely, with clear technical English often essential for distributed delivery.
What strong professionals deliver
The best specialists understand XML beyond syntax. They assess data contracts, security, interoperability and operational support, then leave behind validated schemas, transformation tests and clear documentation. Look for experience with XPath, XSLT, XSD, SOAP, REST integration and the specific industry standards your systems exchange.
Frequently asked questions
Before you brief your next project: the most common questions about XML.
XML is used to represent structured data in a format that both people and software can read. Companies use it for document exchange, configuration, publishing workflows, enterprise integration and industry-specific messages.
XML supports attributes, namespaces, mixed content, document validation and mature transformation standards. JSON is usually more compact and convenient for web APIs, while XML remains a strong choice for complex documents, formal contracts and established enterprise interfaces.
A strong XML specialist often works with XSD, XPath, XSLT, SOAP and REST. Depending on the project, useful adjacent skills include Java or .NET integration, database mapping, message brokers, API security and industry schemas such as UBL or HL7.
The right XML experience depends on the work. A small transformation may need focused XSLT and XPath knowledge, while a migration or integration landscape calls for schema governance, parser behavior, testing, versioning and production troubleshooting.
Yes. XML projects are often suitable for remote collaboration because schemas, transformations and test payloads can be reviewed online. On-site sessions in Dusseldorf may still help when specialists must map legacy interfaces or coordinate with teams handling sensitive systems.
Ask a XML specialist to explain a schema decision, namespace strategy and validation approach from a comparable project. Review sample test cases, transformation logic, error handling and documentation rather than judging only by familiarity with tool names.
Bring in an XML professional when integrations fail intermittently, schemas need to change safely or a legacy document flow lacks ownership. Freelancers are also useful for short migration phases, standards compliance work and independent reviews of complex message contracts.
The challenge with XML is rarely writing tags; it is managing namespaces, schema versions, encoding, transformations and dependencies between systems. Large documents, recursive structures and strict external standards can also make validation and troubleshooting demanding.
The average hourly rate of freelancers in Dusseldorf, Germany who have used XML in their recent projects is 101 €, which corresponds to a daily rate of about 805 € based on an 8-hour working day.
Of the freelancers in Dusseldorf, Germany who have used XML in their recent projects, 90% hold at least a Bachelor's degree, 55% hold at least a Master's degree, and 5% hold a doctorate.
On average, freelancers in Dusseldorf, Germany who have used XML in their recent projects have 23 years of professional experience, with a single engagement typically lasting around 1.7 years.
The most common languages among freelancers in Dusseldorf, Germany who have used XML in their recent projects are German (100%), English (96%), and French (15%).
The most common industries among freelancers in Dusseldorf, Germany who have used XML in their recent projects are Information Technology (92%), Retail (65%), and Banking and Finance (58%).
The most common business areas among freelancers in Dusseldorf, Germany who have used XML in their recent projects are Information Technology (100%), Project Management (77%), and Product Development (73%).
Main locations of FRATCH Experts, who have recently used XML
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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