Billennium is a integral technology company with over 20 years of experience, committed to innovation and empowering businesses. As an employer, we offer a supportive, growth-focused environment where collaboration and creativity thrive.
Join us to shape the future of technology together !
Role Summary: We are looking for a Senior SAP Indirect Tax Consultant with strong SAP FICO expertise and proven experience in indirect taxation, statutory requirements, and cross-module integration within SAP S/4HANA environments.
In this role, you will be responsible for translating complex tax and business requirements into effective SAP solutions, with a particular focus on VAT/GST, tax determination, FI/SD/MM integration, SAP DRC, and external tax engines such as ONESOURCE or Sovos .
You will work closely with business stakeholders, IT teams, and other SAP functional experts to ensure accurate tax determination, regulatory compliance, and reliable end-to-end tax processes across high-volume transaction environments.
Role Requirements: 8+ years of SAP FICO implementation experience
At least 2 full lifecycle SAP implementations
Strong hands-on experience with SAP FI, including integration with SD and MM
Proven expertise in SAP Indirect Tax, particularly VAT/GST
Strong knowledge of tax determination and condition technique in SAP S/4HANA
Solid understanding of tax and statutory requirements in Germany and other EU countries
Experience with SAP S/4HANA
Knowledge of SAP DRC (Document and Reporting Compliance) is highly desirable
Experience with external tax engines such as ONESOURCE or Sovos is an advantage
Understanding of digital reporting, e-invoicing, and SAF-T requirements
ABAP debugging skills for troubleshooting tax calculation and interface issues are preferred
Excellent analytical, communication, and problem-solving skills
Ability to translate complex tax regulations and business requirements into clear functional specifications




Fluent English – written and spoken
Good German is preferred
Bachelor's or Master's degree in Computer Science, Business Administration, or a related field
Core Responsibilities: Analyze business and tax requirements and design automated tax determination solutions within SAP S/4HANA.
Configure and optimize tax determination using SAP condition technique .
Ensure accurate VAT/GST calculation across relevant business scenarios and transaction types.
Investigate and resolve complex tax calculation issues in high-volume transaction environments.
Cross-Module Integration Design and maintain tax-related integration across FI, SD, and MM .
Ensure consistent tax treatment across the end-to-end supply chain.
Analyze dependencies between financial, sales, procurement, and tax processes.
Collaborate with SAP functional and technical teams to implement integrated solutions.
Tax Engine & External Solutions Configure and maintain interfaces between SAP and external tax engines such as ONESOURCE and Sovos .
Support real-time tax rate calculation and ensure reliable data exchange between SAP and external solutions.
Troubleshoot integration and interface issues affecting tax determination.
Digital Reporting & Statutory Compliance Support the implementation of country-specific statutory and tax requirements in Germany and across EU countries.
Contribute to solutions covering e-invoicing, real-time reporting, SAF-T, and other digital reporting requirements .
Support SAP DRC-related processes and ensure alignment with local regulatory requirements.




Business & IT Collaboration Act as a key liaison between business stakeholders, tax experts, and IT teams .
Translate complex tax legislation and business requirements into clear functional specifications.
Provide functional guidance and recommendations on SAP tax solutions.
Support solution design and decision-making throughout implementation and change initiatives.
Lead and coordinate Unit Testing, System Integration Testing (SIT), and User Acceptance Testing (UAT) for tax-related changes.
Define test scenarios covering tax determination, integrations, reporting, and e-invoicing.
Analyze defects and coordinate their resolution with technical and functional teams.
Use ABAP debugging skills, where required, to investigate complex SAP tax and interface issues.
Identify opportunities to improve tax processes, automation, and compliance.
Support the optimization and standardization of SAP tax solutions across business units and countries.
Ensure solutions are scalable, maintainable, and aligned with evolving European tax regulations.
Perks and benefits (our offer): Comprehensive benefits - enjoy Udemy for Business, private medical care, Multisport card, veterinary package, language lessons, and shopping vouchers.
Career growth - access opportunities for professional development and learning, including perks related to our official partnerships with global IT giants: Microsoft, AWS, Snowflake, Salesforce & more.
Global collaboration - work with a diverse, international team.
Innovative environment - be part of a forward-thinking and growth-oriented workplace.
Engaging community – Work with passionate professionals and participate in team-building events, hackathons, and CSR initiatives to make an impact beyond work.
Team-building events including our company tradition (annual company event in Mazury).
A pleasant surprise to start your journey with us in the form of a welcome pack.
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📌 Senior Sap Indirect Tax Consultant (Madrid)
🏢 Billennium
📍 Madrid