Senior AP Deployment Specialist
First seen by Alion on Oct 26, 2026.
About Calfus
At Calfus, we are known for delivering cutting-edge AI agents and products that transform businesses in ways previously unimaginable. We empower companies to harness the full potential of AI, unlocking opportunities they never imagined possible before the AI era. Our software engineering teams are highly valued by customers, whether start-ups or established enterprises, because we consistently deliver solutions that drive revenue growth. Our ERP solution teams have successfully implemented cloud solutions and developed tools that seamlessly integrate with ERP systems, reducing manual work so teams can focus on high-impact tasks.
None of this would be possible without talent like you! Our global teams thrive on collaboration, and we're actively looking for skilled professionals to strengthen our in-house expertise and help us deliver exceptional AI, software engineering, and solutions using enterprise applications.
As one of the fastest-growing companies in our industry, we take pride in fostering a culture of innovation where new ideas are always welcomed—without hesitation. We are driven and expect the same dedication from our team members. Our speed, agility, and dedication set us apart, and we perform best when surrounded by high-energy, driven individuals.
To continue our rapid growth and deliver an even greater impact, we invite you to apply for our open positions and become part of our journey!
About the role
The Senior SAP AP Functional Consultant will drive the functional design, configuration, testing and deployment of Accounts Payable in SAP S/4HANA for a global invoice intake and processing transformation program. You will work across Finance, IT, system integrators and automation partners, from fit-gap analysis and design documentation through configuration, UAT, cutover, go-live and hypercare, across multiple regional rollouts. Invoice automation is at the heart of the program. You will help design and deploy AI-enabled, touchless invoice processing integrated with SAP, so that AP teams in every region can process invoices faster, with fewer exceptions and stronger controls. AP Functional Ownership - Own the SAP AP functional design across discovery, design, testing, deployment and hypercare. - Translate AP business requirements, controls and exception scenarios into functional designs, configuration and specifications. - Act as the AP functional point of contact between Finance, IT, system integrators and automation partners. - Ensure the AP solution is scalable, compliant and practical across regional rollouts.
AP Functional Ownership
- Own the SAP AP functional design and configuration across discovery, build, testing, deployment, hypercare and stabilization.
- Translate AP business requirements, controls and exception scenarios into SAP configuration and functional specifications.
- Act as the primary functional point of contact for AP between business stakeholders, technical teams and the program.
- Ensure the configured solution is scalable, compliant and supportable across country rollouts.
What You'll Do:
- Discovery & Fit-Gap - Lead fit-gap workshops and process walkthroughs with AP and finance stakeholders. - Capture current-state AP processes, including invoice intake, approval workflows, controls and exception handling. - Identify regional and country-specific AP requirements, including tax, e-invoicing, compliance and language needs. - Author Business Requirements Documents (BRD), Functional Design Documents (FDD) and AP process maps.
- AP Solution Design & Configuration - Configure SAP AP in S/4HANA, including vendor master and business partner setup, invoice verification (MIRO / MIR7), invoice tolerances, payment blocks, and parked and held invoice handling. - Configure invoice tax determination, including input tax and withholding tax. - Configure AP account determination and validate GR/IR and MM-FI postings for PO-based invoices. - Support AP scenarios such as non-PO invoices, credit memos, down payments, subsequent debits and credits, and ERS. - Write and review functional specifications for AP reports, interfaces, enhancements and workflows (RICEFW), and work with technical teams through build.
- Invoice Automation - Design and deploy AI-enabled or touchless invoice processing integrated with SAP (for example AppZen, SAP VIM, OCR or Ariba invoicing). - Configure invoice exception handling, approval workflows and routing for PO, non-PO and credit memo invoices. - Adapt automation to regional AP processes and local compliance requirements, and track straight-through processing rates.
- Testing & UAT - Develop AP test scenarios, scripts and expected results for UAT, integration and regression testing. - Lead UAT with AP users, drive defect triage with system integrator and ABAP teams, and secure business sign-off.
- Cutover, Go-Live & Hypercare - Support AP data migration (vendors, open items) and validation, cutover activities and go-live readiness checkpoints. - Provide hypercare support, resolve post-go-live AP issues and stabilise invoice processing. - Support change management, AP user training and knowledge transfer to Finance users and support teams.
- Continuous Improvement - Recommend AP process improvements that increase touchless processing and reduce manual effort. - Capture lessons learned and refine the AP rollout approach for future waves.
On your first day, we'll expect you to have:
- Bachelor's degree in Commerce, Finance, Engineering, Information Systems, or a related discipline.
- 4-7 years of experience as an SAP functional consultant with AP as a core focus.
- Hands-on configuration of SAP AP in S/4HANA or ECC, including invoice verification, tolerances, payment blocks, tax and AP account determination.
- Experience on at least one SAP implementation, rollout or S/4HANA migration program.
- Hands-on experience with fit-gap analysis, BRDs, functional design documents, UAT and cutover. - Strong communication, documentation and stakeholder management skills, including working with system integrators.
Preferred Qualifications
- Experience designing or deploying invoice automation (AppZen, SAP VIM / OpenText, OCR, Ariba invoicing or similar).
- Multi-region AP rollout experience (North America, EMEA, APAC), including e-invoicing or country tax requirements.
- Working knowledge of the SAP payment program (F110), house banks and payment formats.
- SAP S/4HANA Financial Accounting, Sourcing & Procurement or Ariba certification.
- Experience with SAP Signavio, SAP Cloud ALM or SAP Activate. - Exposure to SAP integration (IDoc, BAPI, CPI, APIs).
Critical Success Factors
- Own the SAP AP functional design end to end across every deployment phase.
- Deliver AP configuration that is accurate, compliant and aligned with business requirements.
- Increase touchless invoice processing through well-designed automation and exception handling. - Lead high-quality AP UAT and smooth cutovers for each rollout.
- Build credibility with AP users, Finance, IT, system integrators and program leadership.
What Success Looks Like
- AP requirements, including regional needs, are accurately designed and configured in SAP.
- BRDs, FDDs and functional specs are complete, clear and audit-ready.
- Invoice automation increases straight-through processing and reduces exceptions and manual effort.
- AP UAT covers realistic invoice scenarios and exceptions and is signed off on time.
- Rollouts go live with minimal disruption and AP stabilises quickly through hypercare.
Benefits:
At Calfus, we value our employees and offer a strong benefits package. This includes medical, group, and parental insurance, coupled with gratuity and provident fund options. Further, we support employee wellness and provide birthday leave as a valued benefit.
Calfus Inc. is an Equal Opportunity Employer.
That means we do not discriminate against any applicant for employment, or any employee because of age, color, sex, disability, national origin, race, religion, or veteran status. All employment is decided based on qualifications, merit, and business need.