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Our SaaS solution, the Compleo Invoice Platform, supports secure multi-channel invoice handling, including structured e-invoicing, with full control, validation, and traceability. Its low-code integration and modular design enable efficient workflow automation tailored to each customer’s needs.
Backed by over 35 years of experience and a global presence, Symtrax empowers digital transformation through trusted, customizable solutions.
Got an e-invoicing project? Need expert training on e-invoicing?
We draw on many years of industry experience working with
Service Providers, Trade Associations as well as Public Administrations.
What We Do
We help our clients navigate their challenges through tailored consulting services.
France PDP certification
Helping service providers understand the upcoming French B2B mandate and the PDP requirements, and building the PDP application
E-invoicing training
General e-invoicing training & country-specific courses
Qualiopi / OPCO training sessions available in France
French mandate training - Level 1
French mandate training - Level 2
Webinars
Participating to webinars as a neutral expert to discuss key e-invoicing topics
International compliance
Helping companies understand e-invoicing requirements all over the world
Peppol training
Mastering the Peppol network, its principles, and documents choregraphy
And more!
Contact us to discuss your specific needs
The Invoicing Hub Customers
We’re proud to have supported these companies through our consulting missions.
Who We Help
We are bringing our expertise to all types of stakeholders.
Private Companies
You consider implementing or improving your electronic document processes with your business partners.
Service Providers
You are looking to enter or expand your footprint in the electronic B2B document exchange space, or add partner capacity to your pre-sales or implementation teams.
Public Entities
You are trying to promote adoption or regulate electronic document exchange in the B2B context.
E-Invoicing Experts
The Invoicing Hub co-founders are available to assist you in your e-invoicing projects.
Michael Walther
The Invoicing Hub Co-Founder
Experienced Managing Director & CTO, 10+ years in the E-Invoicing space
Former MD of e-integration GmbH, a German EDI provider with 1.5M+ transactions monthly. Active member of GENA/EESPA, OpenPEPPOL & VeR associations.
Digital
Transformation
B2B
Standards
B2B Implementation
Concepts
Business Process
Analysis
Thibault Samson
The Invoicing Hub Co-Founder
Senior Product Manager, 10+ years in the E-Invoicing space
Formerly in charge of EDI & Compliance solutions at Esker, a French software provider of market-leading Source-to-Pay & Order-to-Cash solutions.
Passionate about content popularization, especially helping everyone understand such a complex and technical topic as electronic invoicing.
E-Invoicing Training
& Education
Technical Content
Popularization
Product Management
& Strategy
Associated Consultants
Collaborate with The Invoicing Hub associated consultants, counting some of the most prominent experts in the industry
Patrick Schuller
Experienced Managing Director & Project Manager with 20+ years in the E-invoicing space
Former MD of Serensia, a French EDI, E-invoicing and AP automation provider, former Director of Cegedim e-business, European leader in EDI & e-invoicing services.
Member of the French E-invoicing National Forum (FNFE), former Member of the Executive Committee of GENA/EESPA. Previously Finance manager and Consultant in Financial Information Systems.
Finance Digital
Transformation
E-Invoicing & AR/AP Automation
Project Management
E-Invoicing / P2P / EDI
Business Development
Philip Helger
Peppol Specialist, Open Source solution provider and e-Invoicing Expert
Technical e-Invoicing and Peppol specialist, focusing on solutions.
More than 15 years of Peppol experience combined with the knowledge of maintaining the Austrian B2G eInvoicing solution (www.erechnung.gv.at).
Delegate for Austria in the CEN TC 434, the European e-Invoicing standardisation body.
Technical consultant for OpenPeppol and some Peppol Authorities.
Currently a Freelance consultant offering a full-stack Peppol Open Source solution and consultancy.
Peppol Expertise
Open Source
Standardization
Lucien Gimenez
Graduate in economics, former Principal Inspector of Public Finances and recently retired, Lucien has successfully developed a cross-functional career in various fields ranging from tax auditing to judicial investigations, including international cooperation missions for Europe and professional training in both technical and communication areas. As an analyst-developer, he has specialized for over 20 years in data analysis and information systems auditing.
Since 2018, he has pursued an independent career as a trainer and expert, focusing on many topics such as digital transformation, electronic invoicing, reliable audit trail, and tax accounting compliance.
Finance Digital
Transformation
E-Invoicing & Tax
Compliance
Annalina Landsberg
E-Invoicing & Process Automation Expert
Founding Consultant helping companies implement and optimize e-invoicing processes and data management solutions.
Researcher on e-invoicing adoption in Germany and co-author of one of the most extensive studies on e-invoicing acceptance in Germany in 2024.
Advisor to e-invoicing software providers, supporting them in enhancing their solutions.
Speaker on digital transformation and e-invoicing.
Passionate about merging psychology and technology to simplify complex topics.
Digital Transformation &
Process Automation
E-Invoicing
Implementation
Stakeholder
Engagement
Andreas Milz
Managing Country Director & Expert in EDI and E-Invoicing – CTC Compliance in Europe (B2B-B2G)
Interim manager in international leading groups on the French-German speaking axis with 20+ years of experience in SAP and cross ERP projects.
Experienced in consulting for carve-out and group splitting projects, EDI partner onboarding, and EDI provider consolidation.
Decision maker within associations UNECE/UNCEFACT, FNFE-MPE/VeR, RAFAL, and various business clubs.
Finance Digital
Transformation
Interim Management &
Country Manager
Consulting & Business
Development
Peter Ilas
E-Invoicing online course creator with 25+ years of experience in Finance & Accounting
Many leadership positions in Dell, Tomra, Big4 audit firms, national corporations.
Creator of the world’s first comprehensive e-invoicing mandate courses, designed for companies implementing e-invoicing, solution providers, and professionals.
Special Offer: 20% discount on Peter’s online courses with the coupon code TheInvoicingHub.
Finance & Accounting
Processes
Finance Digital
Transformation
E-Invoicing Training
& Education
Darshan Patel
Solution Architect | EDI Specialist | Supply Chain Expert
Solution Architect with 13+ years of experience in EDI and supply chain, specialized in scalable EDI solutions and ERP integration. Driving efficiency in logistics, procurement, and operations while leading digital transformation efforts to optimize supply chains.
EDI Solutions
Implementation
ERP
Integration
Supply Chain
Management
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The platform includes a business directory, e-invoicing, lifecycle management and e-reporting, while offering high value-added services, such as : Full integration with your Information System, Support for non-reform and international invoices, Supplier invoice OCR/data capture with advanced workflow validation and business rule controls, Automation of P2P (Procure-to-Pay) and O2C (Order-to-Cash) processes.
Designed for multi-system or multi-entity organizations, Orchestrade® eFacture delivers a centralized and optimized view of your entire invoicing process.
Latest News
Poland’s KSeF phase 2 takes effect after solving initial hurdles
Join the DBNAlliance U.S. e-invoicing event in New York on April 22
Spain formalizes a B2B e-invoicing mandate effective next year
The new billentis Market Report is coming in May 2026
From the upcoming update of EN 16931 to XRechnung 4.0
📩 Newsletter
Receive the latest e-invoicing news, directly in your mailbox, once a month.