
XML Experts
in minutes from over 15,000 CVs with the power of AIWork with specialists who design robust schemas, implement high-throughput XSLT transformations, and integrate enterprise messaging pipelines, matched quickly with vetted and available freelancers.
Meet FRATCH Experts who have recently used XML
Silvia B.
Last position:
Business Consultant - Product Management Banking at Aareal Bank AG
- Focus on optimizing and further developing the internal customer EBICS application
- Functional and technical consulting for Aareal First Financial Solutions AG on EBICS standard products and applications in the areas of operations and further development, as well as project-related communication with external development partners and the product manufacturer to implement the corresponding technical optimizations
- As the functional coordinator, providing advice on content-related and regulatory requirements as well as technical prerequisites and requirements, and bringing these together at the functional level
- Consulting on the use of EBICS formats
- Reviewing the current EBICS standard for optimization and further development potential
- Analyzing the current state to identify development potential and deriving appropriate recommendations for action while considering regulatory requirements
- Conducting EBICS tests throughout the project
- Functional responsibility for requirements management and, in this context, recording and documenting requirements for such tests
- Designing a functional and sustainable test management system
- Conducting and evaluating tests
- Consulting on sustainable quality assurance and audits
- Project language: German and English
- Tools/Methods: MS Project, MS Office, MS Visio, TestRail, Confluence, Jira, Business Logics Bankkrecher, Business Logics Test Data Generator, Business Logics Banking Tool, Business Logics Test System, DBEAVER, Squirrel, Unix Virtual Machines, WinSCP, Kitty, Putty, various Aareal Bank products, Online Banking Portal, Aareal Sign, core banking system, SAP Blue Eagle, SAP RE-FX, Aareon Wodis Sigma, Haufe Real Estate Wowinex, GAP Group Immotion, UTS Karthago, SAP IS-U/Waste, SIV kVASy, various EBICS clients
Wolfgang O.
Last position:
Project Manager at EnBW - Netze Südwest
- New development and further development of the existing MS Dynamics CRM
IT systems: Microsoft Dynamics Customer Service, SharePoint, DevOps, SAP IS-U
- CRM implementation / further development
- Taking over from the previous service provider
- Business process analysis
- Agile project organization
- Business analysis / requirements engineering with AI support
- Use of AI in development
- Analysis of master data processes
- CRM customer data management
- Requirements documentation
- Stakeholder management
- Workshop moderation
Khalid E.
Last position:
Lead Architect & Developer at kem-consulting
Development of an agent-based governance platform for the automated assurance of EU AI Act compliance and ODA-compliant orchestration of AI services in complex enterprise environments.
Design and implementation of an agent-based "Mission Control" framework (Aletheia Conductor) for autonomous state monitoring and process control.
Development of "Compliance-as-Code" (CaC) solutions based on OPA/Rego for system-wide enforcement of regulatory guardrails.
Integration of TM Forum ODA standards (TMF630, TMF622, TMF642) to ensure interoperability and standardization.
Building a highly available event-driven architecture using Redpanda and CloudEvents v1.0 for near-real-time event processing.
Implementation of an audit-proof "Evidence Chain" through cryptographic linking of trace logs in preparation for automated audits.
Tech Stack: Java 21 (Quarkus Native), TypeScript (Next.js), Redpanda (Kafka API), CloudEvents v1.0, OPA (Open Policy Agent) & Rego, TimescaleDB, ZincSearch, Redis, TM Forum ODA, Git, GitHub, Clean Code Development, Like-C4.
Sascha B.
Last position:
Web Developer at GxPlex
- Built a customized MediaWiki instance, including installation, MySQL database, SSL, and automatic backups
- Set up user roles (Admin, Mod, Verified, User) and a permissions system
- FlaggedRevisions for editorial review workflows · Commenting and rating extensions
Hans-Dieter G.
Last position:
Training as an AI Expert
I continuously expand my expertise in AI and automation. I work with ChatGPT, OpenAI, Manus, Gemini, MS CoPilot, APIs, LangChain, Hugging Face, Manus, TensorFlow, and Auto-GPT, as well as Python-based ML frameworks and MLOps tools, to intelligently transform traditional software development, analysis, and testing processes.
Harold T.
Last position:
CPU Watcher — Cloud-Native Monitoring Application at SEUYTEL
- Planned and developed a CPU monitoring application for monitoring system performance and resource utilization.
- Designed and implemented a Spring Boot backend providing a REST API for processing and exposing monitoring data.
- Developed the React frontend for presenting monitoring information in a clear and user-friendly interface.
- Integrated PostgreSQL for persistent storage and management of application data.
- Containerized the application and its services using Docker Compose.
- Automated infrastructure provisioning and deployment using Terraform on AWS.
- Structured the application as a modern, maintainable system using REST-based communication between frontend and backend.
- Designed and developed a secure, scalable CPU monitoring architecture (cpu-watcher) with a dedicated collector application that streams monitoring data to the backend, reducing direct exposure of system resources.
- Designed a secure cloud infrastructure with the database isolated within a private network and OIDC-based authentication.
- Implemented Infrastructure as Code with Terraform and integrated version-controlled CI/CD pipelines to automate testing, infrastructure changes, and application deployments.
- Designed and implemented the frontend delivery architecture using AWS CloudFront.
Stack: Spring Boot · React · PostgreSQL · REST API · Docker Compose · Terraform · AWS
Olga L.
Last position:
Business Analyst at VisualVest (Union Investment)
- Analyzed, structured, and documented business requirements for digital investment solutions, such as robo-advisors.
- Designed applications for new retirement products, including user flows, UX requirements, and functional specifications.
- Modeled and optimized business processes and coordinated with stakeholders while taking regulatory requirements in the financial sector into account.
Bruno P.
Last position:
Product Owner
Design and implementation of a „unified-commerce“ platform for SMEs to sell and deliver multi-product bundles
Achievements: On-time design, delivery and customer acceptance of a 100% functional, CPQ-based „buy flow“ process for configuring and selling multi-product bundles within the specified time frame of 90 days. Successfully tested integration of various interface services for: customer search, enrichment of customer data, address validation, service qualification, phone number validation, credit check, appointment selection and Quote-to-Order transition.
Responsibilities:
- Strategic goal implementation: Derivation and implementation of strategic customer goals (e.g. release content, business value).
- Backlog Management: Creation and elaboration of backlog items (Initiatives, Epics, User Stories, Defects) in close coordination with the project team and customer.
- Prioritization & Releases: Responsibility for prioritizing the Product Backlog and implementing defined release goals.
- Deliverable Tracking: Tracking work results on the supplier and customer side.
- Roadmap & Release planning: Development and implementation of roadmaps and release plans together with the customer.
- Scope responsibility: Responsibility for the contractually agreed scope of services.
- Claim Management: Active claim and change management towards the customer.
- Team coordination: Management and coordination of the development team.
- Use of synergies: Use of synergies between customer projects and product development.
- Proposal preparation: Preparation of proposals (with supervision) and presentation on site to customers and partners.
Skills: Development, communication and implementation of product visions; Product Backlog Management; Stakeholder Management; Regular reporting to management and Steering Committees; Requirements analysis & engineering; Planning and documentation of workshops; Professional leadership and coordination of (distributed) project teams and external service providers; Epic Management; User Story specifications; Creation of use cases, support with software testing and User Acceptance Testing (UAT); Release Management and Sprint Planning; Design of TO-BE processes; Process optimization; Planning, design and specification of interfaces to existing and new systems; Identification, assessment and management of project risks; Active claim and change management; Facilitation of sprint planning and reviews; Data migration; Scrum; Kanban; REST API; JSON; XML; BPMN; UML; Jira; Confluence
Wolfgang D.
Last position:
Agile Coach / technical sparring partner - industrial HW-/SW product development at WAGO
I support the development of an industrial automation and communication product in which hardware, firmware, embedded software, system architecture, and testing work closely together. As a coach and technical sparring partner, I support product and project owners as well as development teams in turning product goals into a clear technical delivery structure.
- Technical Vision & Strategy: translated product goals into prioritized requirements, milestones, decisions, and executable work packages for HW-/SW teams.
- HW-/SW Collaboration: structured the interfaces between hardware, firmware, Embedded Linux/RTOS, fieldbus/connectivity, system test, and product management; made risks and dependencies transparent.
- Coaching & Leadership Sparring: clarified roles, responsibilities, prioritization, and decision paths with technical leads and teams and strengthened cross-disciplinary collaboration.
Methods & environment: Polarion, GitHub, requirements engineering, configuration management, PROFINET, embedded systems, agile delivery, coaching, and facilitation.
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
Christian P.
Last position:
Project Manager at Kreis Segeberg
- WiNOWiG enhancements (digitalization & organization)
- Project management for the WiNOWiG project (regulatory offenses)
- Process optimization and coordination
Maciej S.
Last position:
Product Owner at Bundesagentur für Arbeit
- As part of the project, the further development of the identity management system was driven forward. This included a comprehensive refactoring of the interfaces to the connected target systems. In addition, several special systems were successfully connected to the IAM to ensure end-to-end identity and authorization management.
- Technical design and solution proposals for IAM system development
- Requirements analysis and requirements management (IREB, BABOK)
- Alignment of the strategy with the future target architecture (TOGAF)
- Prototyping of solutions
- Documentation of requirements (Innovator)
- Analysis and documentation of requirements and creation of process models (UML, BPMN, ArchiMate)
- Modeling of requirements and system functionalities (OOA/OOD, UML)
- Further development of interfaces (SOAP, REST)
- Carrying out architecture reviews
Franz B.
Last position:
Product Development (AI) at Own initiative
AI telephone assistant platform
Claude Code, Google AI Studio, Python, LLM / Voice-AI, PostgreSQL
- Conception and hands-on development of an AI-supported telephone assistant platform (voice AI / LLM) – from idea and architecture to MVP/product.
- Built agentic workflows and full automations with Claude Code and Google AI Studio.
- Also delivered AI-supported work in client engagements: used Claude Code for governance documentation, requirement drafts, and automations.
Tobias S.
Last position:
Project Manager SAP S/4 HANA Public Cloud at TIMETOACT Group
To achieve savings and optimize compliance, apps were restructured in line with the mappings in identity management, restrictions were defined and, above all, costs resulting from overuse were reduced. Communication with stakeholders, validation of authorizations with users and technical implementation in the SAP FI/CO and Sourcing & Procurement modules created significant added value for the group. This also included the corresponding documentation for the auditors.
Ursula H.
Last position:
Sub-Project Lead & Scrum Master at DB Energie
Sub-project lead in an agile IT environment
Leading a software development team (10 employees)
- Leading a software development team with 10 employees
- Budget responsibility approx. 3 million euros per year
- Conducting employee and job interviews
- Responsibility for resource planning (budget and employees)
- Digitalization of a web interface
- Regular reporting to customers and stakeholders (C-level)
- Product management: developing and implementing product strategies; defining requirements to guide product development
- Structuring product development & continuous testing efficiently to quickly incorporate feedback & compliance points
- Close collaboration with stakeholders & various teams to understand requirements, set priorities, ensure rollout, and increase user-friendliness
- Project experience in an energy industry company, including the functioning of energy markets, the basics of energy generation and distribution, as well as current challenges and developments in the industry
- Project experience in the railway sector - including the structure and operation of railway systems.
- Project experience within the 16.7 Hz traction power sector incl. knowledge of regulatory processes
- Formulating the sub-project charter and the project profile according to the project standard together with the project management
- Controlling service delivery according to the project charter
- Planning and controlling human resources including budget planning for the sub-project
- Ensuring the work capacity of the sub-project participants, e.g. by requesting access rights and documents for the sub-project team
- Planning and control for the respective sub-project (time, scope, budget) including the creation of necessary documents
- Alignment with the business department and Product Owners to plan the sub-project scope and the corresponding implications
- Executing milestone planning according to the agreed process model
- Effort estimation and support of sub-project controlling as well as overall project controlling in forecasting and planning
- Reporting sub-project status (according to status slide template) including progress (according to progress measurement)
- Analyzing, preparing, and addressing action and decision requirements
- Escalating sub-project issues to the project management
- Creating and managing Change Requests (CR)
- Quality assessment of completed task packages from a project management perspective (time, scope, and budget)
- Implementation management of the overarching guidelines and requirements in the sub-project, supported by cross-functional roles on the functional and technical side.
- Identifying, managing, documenting, and communicating opportunities, risks, and dependencies within and across sub-projects
- Supporting project management in creating the overall project plan and overall status reports
- Preparing and managing commissioning including the required documents and protection needs assessment
Scrum Master in an agile IT environment supporting a software development team in the full-stack area (7 people)
- Close collaboration with stakeholders & various teams to understand requirements, set priorities, ensure rollout, and increase user-friendliness
- Implementation of the selected Scrum method, including the required events, meetings, artifacts (product backlog, sprint backlog, burndown charts), metrics, as well as conducting required training in an agile IT environment
- Preparation of Scrum events such as Daily, retrospectives, Review, Sprint planning, estimation, and refinement (agile way of working)
- Moderation of retrospectives and elimination of obstacles to move the team and product forward
- Preparation of action items and retros via whiteboard and Figma
- Application and improvement of agile methods such as Kanban, Scrum, SAFe, or Scrum of Scrums
- Tracking the "Definition of Done" and "Definition of Ready" for all work results of the development team
- Advising on information flow and communication improvements between Product Owner and project team
- Experience with automation, validation such as mandatory field checks, notification functions, creation of filters, boards, and reports via JQL, and setting up cycle time
- Use of Jira & Confluence
- Setting up a progress measurement for project management to transparently map planned vs. actual team capacities and actual efforts for user stories
- Measuring team progress: creating team KPIs: "velocity", "burn-down chart", "throughput", "costs", "quality", "scope"
- Evaluation of agile metrics, process management, and process modeling methods (BPMN, EPC, UML)
- Communication and moderation know-how
- Methodological competence proven in conflict discussions
Discover over 15,000 top freelancers
Statistics of experts using XML
Aggregated from the professional profiles of matched freelancers.
Experience
23 years

Position duration
5.2 years

Positions per freelancer
16

Top business areas
Information Technology, Product Development, Quality Assurance

Top industries
Information Technology, Banking and Finance, Manufacturing

Certification focus areas
Information Technology, Project Management, Product Development
Bachelor's degree or higher
88%
Master's degree or higher
54%
Doctorate
9%

Certifications per freelancer
3

Most common languages
German, English, French

Speak two or more languages
97%
Based on our profile pool as of 26 Sep 2026.
Daily rate distribution
The chart shows how the daily rates of experts in this technology 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 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 26 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 (92%)
- Banking and Finance (52%)
- Manufacturing (47%)
- Automotive (46%)
- Professional Services (39%)
- Retail (37%)
- Telecommunication (36%)
- Government and Administration (36%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
Core enterprise data exchange standard
Extensible Markup Language forms the backbone of structured enterprise messaging, document publishing, and configuration management. Organizations rely on it to establish strict contractual data definitions across distributed architectures, financial interfaces, and legacy systems that demand precise validation.
Schema validation and parsing tooling
Working effectively with this markup requires deep familiarity with schema definitions and processing engines that enforce data integrity:
- Defining contractual business rules using XML Schema Definition and DTD
- Querying complex document nodes using XPath and XQuery
- Transforming document structures across formats via modern XSLT pipelines
- Stream parsing massive datasets using SAX, StAX, and DOM tree parsers
Enterprise systems and legacy integration
Extensive data exchange workflows in banking, healthcare, logistics, and government depend on standardized dialects like ISO 20022, HL7, and UBL. Integration platforms rely on strict validation rules to guarantee payload compliance before message ingestion across distributed enterprise service buses.
Modern data modernization initiatives
Companies maintain vast repositories of structured documents and configurations that require transformation into contemporary payloads. Projects often entail translating legacy SOAP payloads into RESTful services, bidirectional streaming, and mapping relational databases into hierarchical structures without data loss.
Critical indicators for external expertise
Organizations engage external talent when internal teams encounter performance bottlenecks or structural compliance hurdles:
- High memory consumption caused by naive in-memory DOM parsing
- Complex multi-version schema evolution breaking partner integrations
- Migration challenges between legacy DTD formats and enterprise XSD
- Slow XSLT stylesheet execution degrading batch integration windows
Hallmarks of experienced specialists
Top practitioners combine theoretical knowledge of hierarchical data structures with operational knowledge of streaming parsers. They understand parser security hazards such as entity expansion vulnerabilities, write modular stylesheets, and design schemas that balance structural rigor with practical maintainability.
Frequently asked questions
Curious about XML? Here are the answers that come up again and again.
Senior XML professionals possess mastery over XSLT, XPath, and XSD validation mechanics. They know precisely when to deploy streaming parsers like StAX instead of memory-heavy DOM parsers to maintain peak throughput across enterprise pipelines.
While JSON dominates modern web APIs due to its lightweight syntax, XML excels in complex enterprise integrations requiring formal validation schemas, namespaces, and document-level metadata. Industries like healthcare and finance rely on its rigorous schema guarantees to enforce rigid compliance contracts.
Specialists working with Extensible Markup Language frequently possess extensive backgrounds in Java, C#, or enterprise integration platforms like Apache Camel and MuleSoft. These environments rely heavily on declarative configurations, web services, and robust message routing frameworks.
A seasoned XML specialist actively prevents parser vulnerabilities such as XXE injection and billion laughs entity expansion attacks. They configure parsers to resolve external entities safely, validate schemas strictly, and sanitize incoming untrusted payloads before processing.
When handling gigabyte-scale datasets, an XML expert avoids building full in-memory trees. They design incremental processing routines using event-driven SAX or pull-based StAX readers, paired with optimized XSLT streaming templates to maintain minimal memory overhead.
Yes, nearly all XML engineering, schema design, and transformation tuning can be executed remotely. Specialists collaborate effectively through shared code repositories, automated testing pipelines, and message broker staging environments without requiring physical access.
Companies engage an external XML professional when refactoring legacy integration pipelines, upgrading complex EDI formats, or optimizing slow transformation jobs. Independent specialists quickly resolve serialization bottlenecks and design resilient schema definitions that internal teams rarely touch.
Evaluate candidates by reviewing sample XSD schemas, XSLT transformation stylesheets, and parser configuration examples. Strong candidates demonstrate clear namespace handling, defensive entity parsing, modular design, and a solid grasp of algorithmic complexity in XPath expressions.
The average hourly rate of freelancers who have used XML in their recent projects is 96 €, which corresponds to a daily rate of about 771 € based on an 8-hour working day.
Of the freelancers who have used XML in their recent projects, 88% hold at least a Bachelor's degree, 54% hold at least a Master's degree, and 9% hold a doctorate.
On average, freelancers who have used XML in their recent projects have 23 years of professional experience, with a single engagement typically lasting around 5.2 years.
The most common languages among freelancers who have used XML in their recent projects are German (99%), English (96%), and French (21%).
The most common industries among freelancers who have used XML in their recent projects are Information Technology (92%), Banking and Finance (52%), and Manufacturing (47%).
The most common business areas among freelancers who have used XML in their recent projects are Information Technology (98%), Product Development (85%), and Quality Assurance (67%).
Main locations of FRATCH Experts, who have recently used XML
Our freelancers and interim experts are at home all over Germany — available on-site in Berlin, Hamburg, Munich and every major business hub, or fully remote. Choose a city to discover matched specialists, local market insights and up-to-date availability.
Countries:
Request a free demo
Get in touch with the FRATCH team and we will get back to you within 4 hours.
Would you rather directly get in touch?
We always have the time for a call or email!

Berlin
Hamburg
Munich
Cologne
Frankfurt
Stuttgart
Dusseldorf
Leipzig
Dortmund
Essen
Nuremberg
Vienna
Zurich