Project Manager – Invoice to Pay (AP) Transformation (m/f/d) (80-100%)

We are looking for a highly experienced Project Manager to lead the transformation of our global Accounts Payable / Invoice-to-Pay (I2P) process. In this role, you will, take end-to-end responsibility for the redesign, harmonization and digitalization of the AP process, starting with the Service Network and preparing the organization for a future-proof global setup.

Together with a finance colleague, you will act as the central AP transformation lead within Accelleron’s Procure-to-Pay landscape and drive automation, transparency, compliance and operational efficiency across functions.

After the successful stabilization of the AP transformation, this role will expand into further SAP S/4HANA Phoenix projects within a scope to Source-to-Pay processes. (CH / CN).

You will collaborate closely with Finance, IT, Operations, and Procurement and you will play a key role in Accelleron’s S/4HANA readiness and operational excellence journey.

You will be based at our global headquarters in Baden, Switzerland, and report to the Global Head Value Chain Planning & Fulfillment within the Value Chain function.

Your responsibilities:

• Lead the global Accounts Payable / Invoice-to-Pay transformation project from design to stabilization in close collaboration with Finance.
• Drive the implementation of a modern AP solution within the Service Network, focusing on automation, compliance and global process harmonization, including e-invoicing.
• Act as the process authority for AP within the end-to-end P2P framework, ensuring full alignment with Procurement, Finance and IT.
• Translate business requirements into scalable AP process and system solutions, ensuring a future-proof setup for international growth.
• Prepare and execute the transition of the AP process into SAP S/4HANA, including data migration, testing, cutover and user enablement.
• Ensure consistent process documentation, training material and global adoption.
• Manage scope, dependencies, milestones and senior stakeholder communication across all levels.
• After successful AP stabilization, take over responsibility for further SAP S/4HANA Phoenix projects, especially within the SAP MM / Finance integration area.

Your background:

• University degree in Business, Finance, Supply Chain, or IT.
• Several years of experience in Accounts Payable (AP) / Invoice-to-Pay (I2P) process ownership or transformation, ideally in SAP-based environments.
• Strong hands-on knowledge of SAP AP / FI and SAP MM integration (GR/IR, account determination, tolerances, vendor master).
• Solid experience with E-Invoicing, automation tools, and ERP-integrated AP solutions.
• Proven track record in project management, ideally in comparable transformation or ERP implementation projects.
• Demonstrated ability to lead complex cross-functional initiatives across functions and countries.
• Strong analytical, structured and implementation-driven mindset.
• Excellent stakeholder management and communication skills across all hierarchy levels.
• Fluent in English and German, both written and verbal.

Your benefits:

• Attractive compensation & benefits.
• Employee Assistance Program.
• Global parental leave program.
• Flexible working models.