Marta Mierzejewska
Stäfa, Obere Chergerten 12
Summary
Supply Chain & Procurement professional with experience in global operations across manufacturing and healthcare sectors
Expertise in supply chain coordination, procurement, customer service, and order management within international environments
Strong experience in SAP-based purchase order management, supplier coordination, and logistics execution
Proven track record in managing global supplier relationships and ensuring supply continuity
Skilled in cross-functional stakeholder management across complex
international networks
Optimized operational processes while maintaining high service levels, participation in Kaizen across departments regarding contingent workers process
Advanced user of SAP, Ariba, Microsoft Excel, and procurement systems
Overview
10
10
years of professional experience
Work History
Indirect Procurement Business Specialist
Sonova AG
Stäfa
07.2022 - Current
- Resolved complex purchasing and invoice issues (PR/PO mismatches, blocked invoices, 3‑way match), ensuring smooth operational procurement.
- Supported SAP/Ariba users, guiding stakeholders through compliant purchasing channels and resolving system issues.
- Ensured accurate PO creation through end‑to‑end review of requisitions, contract alignment, coding, and approvals.
- Managed vendor onboarding and master data accuracy (payment terms, pricing, tax, catalogues).
- Identified recurring P2P issues and drove improvements, including a Kaizen initiative reducing contingent workforce onboarding time from 5 to 3 days.
- Supported supplier consolidation and tail‑spend reduction through spend analysis and compliance checks.
- Negotiated improved terms with mid‑spend suppliers, contributing to cost and cash‑flow optimisation.
- Monitored operational KPIs (PO compliance, invoice blocks, onboarding cycle times) to drive continuous improvement.
Operational Procurement & Order management
Medela Consumer AG
Regensdorf
08.2021 - 07.2022
- Executed end‑to‑end operational procurement of raw materials, semi‑finished goods, packaging, and services to support uninterrupted production.
- Converted PRs into POs, monitored supplier performance, and ensured material availability aligned with production schedules.
- Coordinated inbound logistics, including order tracking, goods receipt alignment, and communication between procurement, production, and logistics.
- Monitored stock levels, forecasts, and safety stock to optimise inventory control and prevent shortages.
- Managed export processes and transport coordination with distributors, including preparation of export documentation.
- Improved supplier on‑time delivery through proactive follow‑up and issue resolution.
Customer Service Representative
Johnson Controls
Neuhausen
09.2018 - 06.2020
- Managed end-to-end customer order fulfillment, from order entry to shipment coordination
- Coordinated with factories, customers, forwarders, and warehouses to ensure timely delivery for French and Italian markets
- Addressed customer service enquires quickly and accurately.
- Assisted customers with product-related questions, feedback and complaints.
- Maximised customer satisfaction by resolving service issues promptly
- Improved supplier collaboration throught consistent collborationwith French and Italian suppliers
Supply Chain Coordinator
Alcon by Novartis
Fribourg
02.2018 - 08.2018
- Executed procurement operations for raw materials and finished goods based on demand requirements to support timely availability
- Assisted in controlling destroyed goods at vision care trading locations while maintaining clarity in reporting between all contract and toll locations.
- Managed market returns primarily from EMEA region, ensuring adherence to return policy and compliance with return approval processes. Assisted with launches / extensions / discontinuations / special promotions for EMEA Region
- Supported compliance with regulatory authorities and laws within supply chain and trading environments, including customs and Sarbanes-Oxley (SOX).
Supply Chain Management
ABB
Krakow, Poland
09.2016 - 10.2017
- Conducted Supply Chain activities for goods and services, adhering to policies and procedures while classifying new materials for master data accuracy
- Managed procurement activities for Swiss, Italian, and French markets, achieving timely delivery and precise invoicing
- Converted Purchase Requisitions (PRs) into Purchase Orders (POs) and confirmed delivery schedules with suppliers
- Collaborated with Accounts Payable to resolve invoice discrepancies and ensured accuracy of master data while supporting improvements in Procure-to-Pay (P2P) process
Education
Bachelor of Arts - Modern Languages and Literature, French and Francophone Studies
Universita degli studi di Torino
Turin, ItalyBachelor of Arts - Erasmus Program
Universite Lille III
Lille, FranceSkills
- SAP, Ariba ERP
- Service Now
- Contract management
- Process documentation
- Contingent worker process mapping
- Purchase-to-Pay (P2P)
- Contract administration
- Purchase order management
- Process improvement
- Vendor Master Data Management
- Microsoft Excel and Word, Power Point
- Communication skills
- Customer relationship management
Languages
Polish
First Language
French
Advanced
C1
Italian
Advanced
C1
English
Advanced
C1
German
Intermediate
B1
Timeline
Indirect Procurement Business Specialist
Sonova AG
07.2022 - Current
Operational Procurement & Order management
Medela Consumer AG
08.2021 - 07.2022
Customer Service Representative
Johnson Controls
09.2018 - 06.2020
Supply Chain Coordinator
Alcon by Novartis
02.2018 - 08.2018
Supply Chain Management
ABB
09.2016 - 10.2017
Bachelor of Arts - Modern Languages and Literature, French and Francophone Studies
Universita degli studi di Torino
Bachelor of Arts - Erasmus Program
Universite Lille III