XML Experts in Hamburg
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Meet FRATCH Experts in Hamburg, who have recently used XML
Niko S.
Last position:
Developing Architect, Technical Lead "gridlytics" at HH Energienetze
- Building a data integration platform for high, medium, and low voltage assets for contextual analysis of time series with master data from the SCADA control system (IEC 60870 104), INIS, and SAP.
- Responsibility for the architecture and implementation of the solution, as well as sparring partner for the Product Owner.
- Use of Kotlin, Spring Boot, Maven, TimescaleDB, PostgreSQL, liquibase, Elements IoT, Docker, Kubernetes, Grafana, Python, jupyter, and various API gateways.
Hoa Josef N.
Last position:
AI Architect and Enabler at Inhouse / AI Business
Technologies: n8n, Notion, OpenAI API, Claude, MS AI Foundry, MS CoPilot Studio, MS CoPilot, LLM, Node.js, Vercel, LangGraph, PostgreSQL, pgEdge, pgvector, Docker, LangChain, Ollama, Open WebUI
- Continuous evaluation and prioritization of internal automation needs
- ~20 AI agents in active use: research, content pipelines, document processing
- 5 n8n workflows for automated data and process control
- Architecture built on the same principles as in customer projects: state management, event-driven orchestration, API integration
- Ongoing operation and further development
Vinod G.
Last position:
Freelancer: SAP MDG Consultant at Logistics service provider
- Support for one of the largest logistics service providers in handling ServiceNow tickets in the areas of SAP MDG, Business Partner (BP), customer and supplier master data
- Technical analysis and resolution of tickets through in-depth review of various database tables
- Creation and maintenance of accounting clerks in the system
- Deactivation of company codes using transports
- Carrying out mass changes with LSMW (Legacy System Migration Workbench)
Marcus B.
Last position:
Data Engineer at Deutsche Bahn AG via Scoore GmbH
- Development of ETL pipelines with Talend (7/ Enterprise)
- Development/adaptation of database schema/database functions (PostgreSQL)
- Development of GIT CI pipelines
Technologies: Talend Enterprise, Git, PostgreSQL, Dbeaver, SQL, PL-SQL, Liquibase
Dominic D.
Last position:
Senior GEO Strategist & AI Search Consultant at Venmate GmbH
- Industry: SaaS (Customer Success Management) – B2B
Comprehensive GEO implementation (Generative Engine Optimization) for a B2B CSM SaaS startup with a focus on AI Search Visibility and AI Citations in ChatGPT, Perplexity and Google AI Overviews – including a GEO workshop and a prioritized implementation roadmap.
- GEO Workshop & Roadmap: Conceptualized and delivered a GEO workshop (how LLMs work, AI Search Architecture, citation strategies); translated it into a prioritized implementation roadmap with impact/effort estimates
- Technical GEO Foundation: Robots.txt & llms.txt, Core Web Vitals & page speed, XML sitemaps for AI crawlers
- Schema & Structured Data: Gap analysis, implementation of Product/Service, FAQ, Article, Author and Organization schema, validation of coverage
- Content Architecture & GEO: Flat content architecture, topic clusters (pillar-and-spoke), 200–300 word chunks and answer-first content structure, E-E-A-T rollout through author pages
- Query Fan-Out & Prompt Anticipation: User prompt mapping, query fan-out, content gap analysis based on prompt coverage
- Citation & Backlink Strategy: AI citation analysis (news, Reddit, Wikipedia, listicles) and development of outreach and backlink strategies
Tools & technologies: Otterly.AI, PeecAI, Qforia (iPullRank), Schema Markup Validator, OpenAI Tokenizer, Prompt Coverage Monitor, ChatGPT, Perplexity AI, Semrush, Ahrefs, Framer CMS
Martin W.
Last position:
Security Auditor at MissionMe
- Environment: AWS, Ruby on Rails, GraphQL, React Native
- Penetration test for Backend, Android-App and iOS-App
Aiman R.
Last position:
Test Manager and Test Automation Engineer at Warehouse Management Company
- Introduced test management with SolMan
- Implemented test automation with TOSCA
- Analyzed, created, and automated test cases
- Built regression test portfolio
- Stakeholder meetings and alignments
- Financial management
Klaus-Dieter P.
Last position:
IT Architect at REWE digital
- Development and further development of e-invoicing solutions, interfaces for invoice processing, and implementation of regulatory requirements
Technology & methods: XRechnung, ZUGFeRD, EN 16931, XML, API integration, backend development, cloud services, automation, compliance, AI-supported document analysis
Rainer D.
Last position:
Enterprise Architecture Management / Backend Software Developer at Polizei Hamburg
- Several projects in a police context
- Model and document police procedures/projects with Archimate (as-is/to-be) in the context of P20 (BKA)
- Create software architectures with microservices
- POC development with Springboot/Docker/Kubernetes
- Project size: 10 people
- Enterprise architecture management with Togaf and Archimate
- Backend software development Springboot
- DevOps with Kubernetes
- Implemented using: Java 17/21, Springboot 3, P20 architecture, Togaf, Archimate
Alex O.
Last position:
Contractor at Telefonica Germany GmbH & Co. OHG
- Data-analysis, Preparation, gathering and coordination of business requirements for retrieval of monthly- and long term (CLV – relevant) cost- and revenue-components per contract for a customer–base–grouping project (HUB–Project) for B2C-Postpaid-Controlling
- Concept and Implementation of cost- and revenue-KPIs calculation and corresponding CLV–reports (Oracle, Perl, SVN, MS SQL Server, MS Power BI, Serviceware Performance Analytics)
- Operational support of the HUB-Project – various ad-hoc reports, deployments, job-scheduling etc. (Oracle, SVN, BICSuite–Scheduler, DWSODA etc.)
- Analysis, implementation, retrieval and reporting of various physical and financial KPIs for B2P-Prepaid Business on an existing data-mart (Oracle, Perl)
Guido B.
Last position:
Independent Management Consultant and Interim Manager at BCTC Unternehmensberatung Guido Bäcker
Consulting, training, and coaching in the financial sector on strategy, organization, and IT topics
MorgenFund: Advising the operator of a fund platform on software selection for a sub-ledger "Cash Accounts" based on Virtual IBANs (VIBAN)
Structuring requirements, market screening, creating RfIs, communicating with vendors, and conducting the selection process
UniCredit/HypoVereinsbank: Workstream lead "Booking and Customer Reporting" in the payment transformation project "PULS"
Business analysis, creating business requirements and aligning solution items as part of the functional specification with the bank's IT service providers
Business analysis of SEPA CT and SWIFT MX (.camt, .pain, and .pacs formats), change management, team lead for a virtual team of fifteen line experts, and stakeholder management
equensWorldline Germany: Program management for three projects of the SWIFT service bureau (CBPR+, ESMIG, and Euro1Step1 migration) as part of the SWIFT MX migration
Managing individual project managers regarding overarching goals and requirements; reporting to internal and external committees and stakeholders; coordinating with dependent projects and programs
Project management/PMO: interim project management, stand-in for project managers, resource planning, budget and cost management, general PMO tasks
Torsten L.
Last position:
Technical design and development of frontend and backend for e-waste-race.de / textil-race.de at Das macht Schule gemeinnĂĽtzige GmbH
- Creation of a platform where schools can run competitions to collect e-waste or old textiles
- Development of a shared PHP backend for administration by the client
- Connection of two separate WordPress sites via REST API
- Development of a custom WordPress theme with an extensive login area for students
- Setup of normally editable content pages using Elementor
Hartmut U.
Last position:
Freelancer at Freelancer
Projects at Raiffeisen Software Group (RSG), Linz from 2022-01-01 to 2025-03-31: application development on mainframe with PL/1, DB2, JCL, Tabex; development environment with idz, Jira, Dimensions, Confluence; execution of projects in banking reporting (own funds, capital requirements, large exposures, leverage ratio)
Project at Airbus, Hamburg from 2020-01-01 to 2022-12-31: mainframe system enhancements (TAKSY) in agile environment (Scrum, SAFe); business analysis; technical design; implementation (PL/1, DB2, IMS, JCL); test management; deployment
Jonas T.
Last position:
IT Consultant at Bechtle AG
- Prequalified 200 demands within five weeks on the multi-cloud-commerce platform bechtle-clouds.com with three external consultants
- Served a dual role as project manager and requirements engineer for various enhancements
- Domain topics: reimplementation of Entra ID Sync, improvement of support processes, optimizations in the product catalog
- Demand and project management in ServiceNow
- Refinement of epics and stories with internal teams and external service providers
- Management of the external international service provider
Matthias E.
Last position:
Lead Android Developer at Star Finanz-Software Entwicklung und Vertriebs GmbH
- Further development of the Android app "StarMoney"
- Major XML to Compose redesigns
- Introduction of new technologies and architecture
- Implementation of instant bank transfer
- Development following the agile Scrum process
Discover over 15,000 top freelancers
Statistics of experts using XML
Aggregated from the professional profiles of matched freelancers.
Experience
24 years (Germany: 23 years)
Position duration
3.5 years (Germany: 5.2 years)
Positions per freelancer
18 (Germany: 16)
Top business areas
Information Technology, Product Development, Project Management
Top industries
Information Technology, Banking and Finance, Professional Services
Certification focus areas
Information Technology, Project Management, Product Development
Bachelor's degree or higher
77% (Germany: 88%)
Master's degree or higher
50% (Germany: 53%)
Doctorate
7% (Germany: 9%)
Certifications per freelancer
2 (Germany: 3)
Most common languages
German, English, Spanish
Speak two or more languages
95% (Germany: 97%)
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 Hamburg 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 Hamburg 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 19 Sep 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 (85%)
- Banking and Finance (62%)
- Professional Services (56%)
- Retail (49%)
- Transportation (46%)
- Healthcare (44%)
- Education (41%)
- Manufacturing (41%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
What XML is
XML, or Extensible Markup Language, is a text-based format for storing, structuring and exchanging data. Its elements, attributes and namespaces give complex information a clear structure that both people and software can process. XML is designed for meaning and validation rather than visual presentation.
Where it is used
XML remains common in enterprise integration, publishing, finance, logistics, healthcare and public-sector systems. Companies use it for APIs, configuration files, document workflows, product catalogs and messages exchanged between applications. It is especially useful when data needs a defined structure, long-term readability and strict validation.
- Exchange data between business systems
- Define document structures with XML Schema
- Transform content with XSLT
- Process XML through SOAP and related services
Ecosystem and tooling
Strong XML work can include XML Schema Definition, namespaces, XPath, XSLT and XQuery. Professionals may also work with SOAP, WSDL, RSS, Atom, SVG, MathML and industry-specific document standards. Editors, validators, parsers and transformation processors help teams test documents and integrate XML safely into applications.
When companies need experts
Freelance expertise is useful when an integration project must connect older enterprise software with newer services, or when a document standard needs to be introduced across multiple teams. Specialists can clarify an unclear data model, repair faulty transformations, migrate interfaces and create validation rules. They can also review security, performance and maintainability before a release.
- Map data between incompatible schemas
- Build or revise SOAP interfaces
- Diagnose namespace and validation errors
- Convert XML into JSON, HTML or other formats
What strong professionals deliver
Experienced XML professionals understand the business meaning behind each element, not just the syntax. They create readable schemas, precise XPath expressions and testable XSLT transformations. They document assumptions, handle optional and repeated data carefully, and protect parsers against unsafe external entities and malformed input.
Working with Hamburg teams
XML expertise supports local and distributed teams working across logistics, manufacturing, media, finance and public services in Hamburg. Remote collaboration works well when schemas, sample documents, interface contracts and test cases are shared clearly. On-site workshops can help when several departments must agree on a common data model or migration plan.
Frequently asked questions
Quick answers to the questions that come up most around XML.
XML is used to structure, store and exchange data between applications and organizations. Companies rely on it for enterprise messages, document workflows, configuration, publishing and interfaces where clear validation and long-term readability matter.
XML offers namespaces, attributes, mature schema languages and strong support for document-oriented content. JSON is often more compact and convenient for web APIs, while XML can be the better fit for regulated exchanges, complex documents or established enterprise interfaces.
XML work often connects with XML Schema, XPath, XSLT, XQuery, SOAP, WSDL and API integration. Useful additional skills include Java, .NET, SQL, JSON conversion, message brokers, testing and secure parser configuration.
XML project needs vary with the scope and risk of the integration. A simple transformation may need focused specialist support, while a migration across legacy interfaces requires someone who can understand schemas, business rules, dependencies and production failure modes.
XML projects are often well suited to remote work because schemas, sample files, mappings and test results can be reviewed online. Hamburg-based teams may still prefer on-site workshops for interface discovery, stakeholder alignment or sensitive legacy-system transitions.
XML quality is visible in precise schemas, useful validation errors, documented namespaces and transformations that handle real edge cases. Ask for representative examples, testing methods and an explanation of how the specialist prevents malformed input, data loss and unsafe parser behavior.
XML remains relevant where established enterprise standards, structured documents, validation or contractual message formats are involved. New services may use JSON, but many systems still require XML at integration boundaries, so specialists who can bridge both formats are valuable.
XML specialists should clarify the source and target schemas, namespace rules, validation expectations, sample documents, error handling and delivery environment. They should also ask about versioning, data ownership, security constraints and whether the work includes legacy SOAP or XSLT components.
The average hourly rate of freelancers in Hamburg, Germany who have used XML in their recent projects is 97 €, which corresponds to a daily rate of about 772 € based on an 8-hour working day.
Of the freelancers in Hamburg, Germany who have used XML in their recent projects, 77% hold at least a Bachelor's degree, 50% hold at least a Master's degree, and 7% hold a doctorate.
On average, freelancers in Hamburg, Germany who have used XML in their recent projects have 24 years of professional experience, with a single engagement typically lasting around 3.5 years.
The most common languages among freelancers in Hamburg, Germany who have used XML in their recent projects are German (100%), English (95%), and Spanish (13%).
The most common industries among freelancers in Hamburg, Germany who have used XML in their recent projects are Information Technology (85%), Banking and Finance (62%), and Professional Services (56%).
The most common business areas among freelancers in Hamburg, Germany who have used XML in their recent projects are Information Technology (97%), Product Development (85%), and Project Management (79%).
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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Essen 
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Philipp Thomaschewski
FRATCH CEO
