Wee Sien Sim

• More than 20 years of experience in Semiconductor & Solar industry across both Frontend and Backend, with global experience in Business Process development and Change management. Core competencies include:
  • Organization Strategy;
  • Sales & Operations planning, Demand Forecasting; Inventory Management
  • Production Scheduling & Dispatching;
  • Supply Planning & Bottleneck Management;
  • Supply Chain Network Integration & Traceability;
  • Stocking Point Optimization
• Experienced People Leader, focusing on people development, identifying strengths and leveraging individual assets to reach business goals efficiently.
• Successful Project Leader, proven record in leading complex projects with large cross-functional and multi-cultural teams under challenging circumstances.

Maxeon Solar Technologies Ltd

Fab-2023~Present: Senior Director, Sales, Inventory & Operations Planning

• Global SIOP Head, reporting directly to COO
• Part of the core team to push through the Maxeon Factory investment in New Mexico ($1B investment)
• Re-structured the executive meetings to accelerate decision making in preparation for Business change
• Strengthen the organization with robust setup in Singapore, Philippines, Malaysia, and Mexico
• SIOP Transformation: Successfully implemented Kinaxis within 5 months upon joining Maxeon

ams OSRAM AG

Mar-2020~Feb-2023: Senior Director, Sales & Operations Planning / Demand Management

• Managing a Global team in 6 countries (Singapore, Malaysia, Austria, Germany, Netherland, Belgium)
• Owner of Long Term Planning process, Steered the organization footprints with COO for the upcoming 5 years
• Owner of S&OP: Drive Global Sales & Operations platform to enable decision with Data simulation
• Delivered S&OP integration in OSRAM integration, set the benchmark across all Integration tracks

Infineon Technologies Asia Pacific Pte. Ltd

Jan-2015~Mar-2020: Director, Supply Chain Engineering & WIP Flow Management

• Project Owner for “Factory Optimization with IBM CPLEX and synchronization of Man, Machine, Material and Method in Backend Factories à High Performance Award Winner
• Program Leader for Site-to Site Integration Program and implementing MES backbone across all manufacturing sites, as key enabler to Global Virtual Factory vision à SICC Collaboration Award Winner
• Program Leader for Global Stocking Point Optimization project à Report directly to Infineon OP Board
• Business owner of SAP-Production Schedule (upcoming project), overarching the interaction between Plan and Make layers.

• Startup “Supply Chain Engineering” department in Singapore, developed a strong portfolio of Process & Project roles from ground zero.
• Global Project leader for Lean Planning Project in factories, transformed the planning process of worldwide organization and reduced the S&OP cycle from monthly to quarterly.
  • Developed the “moving bottleneck” concept, led the conversion of all capacity constraints to bottlenecks and eliminated 90% of short term manual demand adjustment. 
• Business owner of Global Lot Traceability across whole Supply Chain, continuously drive improvement in Tool, Process, and Algorithm to enable effective material quarantine. 
• Liaised with local Universities and EDB to increase awareness of Infineon’s brand and developed a sustainable internship program to build talent pipeline.

• Consolidated global demand and capacity on monthly basis, managed alignment between business divisions and factory planners to ensure demand-supply match. 
• Developed what-if scenarios to stress the production capacity and proposed optimum inhouse-subcon share
• Led taskforce in Batam, and improved the line planning methodology to meet the customer demand ramp. 
• Project leader of capacity re-grouping project to improve the capacity robustness and order fulfillment. 

Systems on Silicon Manufacturing Co. Pte. Ltd.

• Managed both NXP and TSMC accounts, as the interface of order management and delivery fulfillment.
• Initiated cross-functional activities to meet customers’ expectations, worked closely with production to correct schedule slippage.
• Led ageing inventory disposition project and achieved 33% reduction. 

Sep-1997~Mar-2001: Engineer, Production Control

• Coordinated the 6 manufacturing modules to deliver daily production targets and provide early warning to business counterparts.
• Implemented Business Object Central Reporting with Compaq in Operations

Master of Business Administration

Bachelor of Mechanical & Production Engineering

Nanyang Technological University, 1994-1997