Recruit 121 is seeking a Senior SAP IS-U Consultant with deep expertise in the Billing module to lead billing strategy, system configuration, and delivery across a multi-phase implementation.
Responsibilities

Define billing strategy, rate design, and billing schema configuration
Gather and document business requirements for billing, invoicing, and budget billing processes
Lead blueprint workshops with stakeholders to align on billing rules, calendar logic, and exception handling
Analyse current-state billing processes and system configuration
Identify gaps in rate determination, proration, rounding, and billing period logic
Assess integration points with adjacent IS-U modules (Device Management, FICA, CRM) and third-party systems
Facilitate workshops with business users, technical teams, and vendors to align on solution design
Translate business needs into functional specifications for developers where customisation is required
Drive alignment on delivery plans, testing strategies, and deployment timelines




Support system integration testing (SIT) and user acceptance testing (UAT) for billing cycles
Deliver key-user training and create end-user documentation
Lead cutover activities and technical handover to support teams
Provide hypercare support for billing runs, mass processing, and exception resolution
Qualifications

Must-Have Expertise
Proven experience as an SAP IS-U Consultant with at least one full implementation or rollout project in the Billing area
Deep functional knowledge of billing schemas, rate determination
Strong understanding of budget billing, billing simulation, invoicing, and period-end mass billing runs
Experience configuring SAP IS-U (customising tables, rate structures, and billing control parameters)
If you're an experienced IS-U Billing Consultant ready to own strategy through go-live, we'd like to hear from you.

📌 SAP ISU Billing Consultant (Madrid)
🏢 Recruit 121 Group
📍 Madrid