E-Invoicing Expert in Düsseldorf
for compliant invoice automation, matched in minutes with vetted freelancersHire experts who connect electronic invoicing with ERP and accounting systems, implement Peppol workflows and manage tax-compliant invoice formats. FRATCH matches you quickly and precisely with vetted, available freelancers.
Meet FRATCH Experts in Düsseldorf, who have recently used E-Invoicing
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.
Timo T.
Last position:
Gronic Ident & Sign at Gronic Systems GmbH
Gronic Ident & Sign
Core technologies: Android, Jetpack Compose, Retrofit, Regula Document Reader, Adobe Sign
Android app on dedicated devices for identifications and electronic signatures at the PoS
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
Michael M.
Last position:
Team Lead / Service Owner 2nd Level & ITIL at Creditreform
- Service owner of the receivables management platform Ikarus
- Management and coordination of external 1st-level service providers
- Team leadership and building ITIL-compliant support structures
- Managing the handover to 3rd-level support (internal & external, incl. vendor/development)
- Stakeholder management between the business unit, IT, and external partners
- Jira ticket automations and maintenance of Confluence documentation
Christian L.
Last position:
Solution Sales Specialist at BE-terna GmbH
- Development and expansion of the Microsoft Dynamics BC (ERP, CRM) platform and BE-Terna Automotive and Manufacturing solution in DACH
- Product and project management
- Establishment of a sales, service and project structure in the business unit
- Strategic planning of network connections across DACH
- Partner management and combined sales of SaaS solutions
- Speaker and webinar sessions at conferences and trade fairs
- Business consulting for an optimized supply chain in logistics, production and process operations
- Project management
- Management and coordination of customer workshops
- Digital transformation/change management
Mitali S.
Last position:
Freelancer at Fintom8 Fintech AI UG
- Built and launched the AI-powered “E-Invoice Corrector,” an intelligent system for validating and correcting invoices, using Python, FastAPI, and machine learning. The system is now live at Fintom8.
- Converted the Corrector into a fully functional API, published with Swagger documentation for easy access and integration by internal and external consumers.
- Designed, experimented with, and optimized advanced LLM prompts and meta-prompting strategies to improve automated reasoning, error correction, and decision-making in agent workflows.
- Wrapped and integrated existing APIs within the Google Agent Development Kit (ADK) framework to enhance automation capabilities and conversational AI workflows.
- Implemented comprehensive unit testing using pytest and unittest, and employed breakpoint debugging (VS Code, pdb) to ensure code reliability, maintainability, and smooth runtime execution.
- Utilized Pydantic and Tabulate for structured data validation, API schema management, and clear tabular data representation in testing and debugging workflows.
- Pursuing the Google Cloud Professional Certificate.
Anouar T.
Last position:
Fullstack Developer Java/Spring Boot at Snipes SE (Deichmann Group)
- Migration of a .NET Core loyalty program for Snipes, used by mobile cash registers in Snipes stores
- Part of the customer’s digitalization strategy in an agile, cross-functional team with a high level of ownership
- Connecting interfaces to third-party systems (e.g. Brandung, CDS)
- Quality assurance through automated tests
- Carrying out developer, unit, and integration tests
- Patterns & methods used: Clean Code, microservice architecture, agile development with SCRUM
- Technologies & tools used: Spring Boot, Java 23, Java Persistence API (JPA), Azure DevOps, Azure Key Vault, Azure PostgreSQL, Docker & Kubernetes, Git, Graylog, Grafana, JUnit, SonarQube, Jira, Confluence, Prometheus, GitLab, GitLab CI/CD, Visual Studio Code
Thorben W.
Last position:
Senior Lead Buyer IT + Telco ad interim at Unnamed Client (Automotive, Energy, Solar and Charging Solutions)
- Managed a worldwide IT procurement volume of approx. €200 M across ~160 IT and Telco themes with budgets from €300 K to €7.5 M
- Procured hardware, software and licenses for HQ and ~25 plants globally (e.g., Hungary, North Macedonia, Bulgaria, Ukraine, Morocco, Mexico)
- Provided disciplinary leadership for 2 direct reports
- Negotiated major contracts with US and UK software and telco providers, achieving average savings of ~9 %
- Utilized SAP Ariba for procurement processes
- Optimized procure-to-pay processes including invoice dispute resolution and contract management
- Collaborated closely with license management, governance and legal teams
- Supported post-merger integration of a charging solutions unit
Discover over 15,000 top freelancers
Statistics of experts using E-Invoicing
Aggregated from the professional profiles of matched freelancers.
Experience
16 years (Germany: 21 years)
Position duration
1.4 years (Germany: 2.3 years)
Positions per freelancer
15 (Germany: 16)
Top business areas
Information Technology, Project Management, Customer Service
Top industries
Banking and Finance, Information Technology, Retail
Certification focus areas
Information Technology, Project Management, Operations
Bachelor's degree or higher
71% (Germany: 86%)
Master's degree or higher
29% (Germany: 56%)
Certifications per freelancer
2 (Germany: 3)
Most common languages
German, English, French
Speak two or more languages
100% (Germany: 98%)
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 Düsseldorf 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 Düsseldorf using E-Invoicing
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.
E-Invoicing experts industry focus
See which industries our matched freelancers work in most often — every figure is calculated live from the freelancers on FRATCH.
- Banking and Finance (75%)
- Information Technology (75%)
- Retail (63%)
- Chemical (50%)
- Energy (50%)
- Media and Entertainment (50%)
- Automotive (38%)
- Transportation (38%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
What E-Invoicing covers
E-Invoicing is the structured exchange of invoices between businesses, public bodies and service providers. Unlike a PDF sent by email, an electronic invoice carries machine-readable data that accounting systems can validate, post and archive. Projects often include formats such as Peppol BIS, XRechnung and ZUGFeRD.
Where it is used
Companies use E-Invoicing to automate accounts payable and receivable, reduce manual entry and improve invoice traceability.
- Supplier invoice capture and validation
- Customer billing and credit note workflows
- Peppol access point integration
- ERP, tax and archive connections
- Approval, exception and payment processes
Ecosystem and tooling
Strong specialists understand the relationship between invoice standards, business rules and financial software. They work with Peppol networks, XML schemas, XRechnung, ZUGFeRD, APIs, middleware and document archives. Depending on the project, they connect SAP, Microsoft Dynamics, DATEV or a custom finance stack while preserving audit trails and data security.
When companies need specialists
Freelance expertise is useful when an organisation is replacing email invoices, entering a new market or integrating a new ERP. It also helps when invoices fail validation, supplier onboarding is slow or finance teams need better visibility. In Düsseldorf, specialists may support local industrial, logistics, retail and professional-services organisations while collaborating remotely with international teams.
- Select formats and network participants
- Map invoice data to business requirements
- Test validation and exception handling
- Prepare rollout and user guidance
Skills that matter
A capable professional combines financial-process knowledge with integration skills. They can interpret invoice schemas, design API or middleware flows, configure validation rules and investigate rejected documents. They also understand access controls, retention, reconciliation and the practical needs of accounting teams. German and English communication can be important when local finance stakeholders work with international suppliers.
How to assess quality
Ask for evidence of complete invoice flows, not only a file conversion. Strong professionals explain how they handle tax data, duplicate invoices, corrections, rejected messages and system downtime. They document mappings, test cases and operational ownership clearly. The best fit can also distinguish a standard-format issue from an ERP, network or master-data problem, making the result easier to maintain after launch.
Frequently asked questions
Everything clients usually want to know about E-Invoicing, in one place.
E-Invoicing is used to exchange structured invoice data that accounting systems can read and process automatically. It supports validation, approval, posting, reconciliation and archiving across accounts payable and accounts receivable workflows.
Electronic invoicing uses structured data, while a PDF mainly presents information for a person to read. A PDF may still require manual extraction and checking; structured E-Invoicing can support automated validation and processing when both systems use compatible formats.
A strong E-Invoicing specialist should understand ERP and accounting integrations, XML, APIs, middleware, Peppol and invoice validation. Knowledge of tax data, master data, digital archiving, security and business-process testing is also valuable.
A suitable E-Invoicing professional should have handled a complete flow from invoice creation or receipt through validation, posting and archiving. The required depth depends on the systems involved, the number of trading partners and whether the work is a rollout, migration, remediation or integration.
E-Invoicing work is often suitable for remote collaboration because mapping, configuration, testing and documentation can be performed online. On-site workshops may still help with finance-process discovery, ERP access and stakeholder training, especially for organisations based in Düsseldorf.
Ask how the E-Invoicing specialist handles rejected documents, duplicate detection, credit notes, missing tax data and system outages. Request clear examples of mapping documentation, test coverage, monitoring and handover rather than accepting a demonstration based only on successful invoices.
Peppol can be a strong choice when a company needs a standardised way to exchange invoices with multiple connected organisations or public-sector recipients. An E-Invoicing specialist should first check trading-partner requirements, supported formats, access-point options and the existing ERP workflow.
Common E-Invoicing problems include incomplete supplier data, incorrect tax mappings, incompatible XML structures, unclear approval rules and weak exception handling. Specialists reduce risk by testing real business cases, involving accounting users early and defining ownership for rejected or delayed invoices.
The average hourly rate of freelancers in Dusseldorf, Germany who have used E-Invoicing in their recent projects is 92 €, which corresponds to a daily rate of about 733 € based on an 8-hour working day.
Of the freelancers in Dusseldorf, Germany who have used E-Invoicing in their recent projects, 71% hold at least a Bachelor's degree and 29% hold at least a Master's degree.
On average, freelancers in Dusseldorf, Germany who have used E-Invoicing in their recent projects have 16 years of professional experience, with a single engagement typically lasting around 1.4 years.
The most common languages among freelancers in Dusseldorf, Germany who have used E-Invoicing in their recent projects are German (100%), English (100%), and French (25%).
The most common industries among freelancers in Dusseldorf, Germany who have used E-Invoicing in their recent projects are Banking and Finance (75%), Information Technology (75%), and Retail (63%).
The most common business areas among freelancers in Dusseldorf, Germany who have used E-Invoicing in their recent projects are Information Technology (75%), Project Management (75%), and Customer Service (50%).
Main locations of FRATCH Experts, who have recently used E-Invoicing
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
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