Master Scheduler

by OES Inc.

Location: London, ON
Date Posted: Jul 29, 2026
OES Inc.

Job Description

Master Scheduler

The Master Scheduler is responsible for developing, maintaining, and executing the master production schedule to support customer demand, inventory objectives, and operational efficiency within a high-volume electronics manufacturing environment. This role serves as a key liaison between Production, Supply Chain, Purchasing, Engineering, Customer Service, and Quality to ensure materials and manufacturing capacity are aligned to achieve on-time delivery and business objectives.

The ideal candidate is highly analytical, detail-oriented, and experienced in manufacturing planning processes, ERP systems, and production scheduling in a fast-paced electronics manufacturing setting.

Key Responsibilities

Production Planning & Scheduling

  • Develop and maintain the Master Production Schedule (MPS) based on customer demand, forecasts, inventory targets, and production capacity.
  • Create and execute detailed production schedules to optimize resource utilization, labor efficiency, and equipment availability.
  • Monitor production progress and adjust schedules to address changing customer requirements, supply constraints, engineering changes, and production issues.
  • Ensure production plans support customer delivery commitments while minimizing excess
  • inventory and manufacturing disruptions.
  • Balance demand and capacity across manufacturing operations.

Demand & Inventory Management

  • Review customer forecasts, sales orders, and historical demand trends to develop accurate production plans.
  • Collaborate with Supply Chain and Purchasing teams to ensure timely availability of components and raw materials.
  • Monitor inventory levels and identify risks related to shortages, excess inventory, or obsolescence.
  • Support inventory optimization initiatives and cycle count accuracy.

Cross-Functional Coordination

  • Work closely with Production, Engineering, Procurement, Quality, and Customer Service teams to coordinate production priorities.
  • Participate in Sales, Inventory, and Operations Planning (S&OP) activities.
  • Communicate schedule changes, material constraints, and capacity concerns to key stakeholders.
  • Assist in managing engineering change orders (ECOs) and new product introductions (NPIs) from a planning perspective.

Performance Monitoring & Continuous Improvement

  • Track and report key performance metrics including:
  • On-Time Delivery (OTD)
  • Schedule Adherence
  • Production Attainment
  • Inventory Turns
  • Capacity Utilization
  • Material Availability
  • Analyze scheduling and production data to identify opportunities for process improvements.
  • Lead or support continuous improvement initiatives to enhance planning accuracy and operational performance.
  • Maintain accurate data within ERP/MRP systems.

Risk Management

  • Identify potential supply chain, capacity, and production risks and develop mitigation strategies.
  • Escalate material shortages and production bottlenecks proactively.
  • Support contingency planning to minimize customer delivery disruptions.

Qualifications

  • Bachelor's degree in Supply Chain Management, Operations Management, Business Administration, Industrial Engineering, or related field preferred.
  • Possess/be able to acquire and maintain Security clearance
  • Clear Criminal Background Check and Credit Check
  • Equivalent combination of education and experience may be considered.
  • Minimum 5 years of production planning, scheduling, or supply chain experience in a manufacturing environment.
  • Experience in electronics manufacturing, EMS (Electronics Manufacturing Services), PCB assembly, or high-mix/low-volume manufacturing strongly preferred.
  • Experience utilizing ERP/MRP systems such as SAP, Oracle, Epicor, Microsoft Dynamics, IQMS, Plex, or similar.

Skills & Competencies

  • Strong understanding of production planning, capacity planning, MRP, and inventory management principles.
  • Advanced proficiency in Microsoft Excel and data analysis.
  • Excellent problem-solving and analytical abilities.
  • Strong organizational and time-management skills.
  • Effective communication and stakeholder management skills.
  • Ability to make decisions under pressure in a dynamic manufacturing environment.
  • Strong attention to detail and commitment to accuracy.

Preferred Certifications

  • APICS/ASCM Certified in Planning and Inventory Management (CPIM)
  • Certified Supply Chain Professional (CSCP)
  • Lean Manufacturing or Six Sigma certification considered an asset

Working Conditions

  • Full-time position located on-site in London, Ontario.
  • Regular presence on the manufacturing floor required.
  • Occasional extended hours may be required to support business needs, customer demands, or production challenges.
  • Fast-paced electronics manufacturing environment with frequent communication across departments.

Key Success Metrics

  • On-Time Delivery Performance
  • Schedule Adherence
  • Inventory Accuracy and Inventory Turns
  • Production Plan Achievement
  • Material Availability
  • Customer Satisfaction
  • ERP Data Accuracy
  • Capacity Utilization

Pay: $65,000.00-$75,000.00 per year

Benefits:

  • Casual dress
  • Company events
  • Dental care
  • Disability insurance
  • Employee assistance program
  • Extended health care
  • Life insurance
  • On-site parking
  • Paid time off
  • RRSP match
  • Tuition reimbursement
  • Vision care
  • Wellness program

Education:

  • Bachelor's Degree (required)

Experience:

  • Production Planning : 5 years (required)

Work Location: In person

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