Skip Navigation

External Master Scheduler

Location Cork, Ireland

BioMarin is the world leader in delivering therapeutics that provide meaningful advances to patients who live with serious and life-threatening rare genetic diseases. We target diseases that lack effective therapies and affect relatively small numbers of patients, many of whom are children. These conditions are often inherited, difficult to diagnose, progressively debilitating and have few, if any, treatment options. BioMarin will continue to focus on advancing therapies that are the first or best of their kind. BioMarin’s Technical Operations group is responsible for creating our drugs for use in clinical trials and for scaling production of those drugs for the commercial market. Within BioMarin’s Technical Operations group, Sales & Operations Planning (S&OP) is the primary linkage that connects the strategic plan to the tactical plan. One of the primary outputs from the S&OP cycle is the production plan for BioMarin's suite of commercial and clinical products.  

The primary role of the External Master Scheduler is to translate the production plan into a granular master production schedule which optimizes work streams within the impacted Contract Manufacturing Organizations (CMO) and which will be used within the supply planning process. This position is tasked with building and maintaining strong relationships with functions such as Supply Chain Planning, CMO, QA and QC.

Come join our team and make a meaningful impact on patients’ lives. 


  • Convert the production plan into a master production schedule, optimizing the allocation of production resources by balancing plant efficiency and capacity with supply requirements and ensuring that the outputs and due dates for all process orders add up to and match the commitments incorporated into the production plan within the predetermined time fence
  • Monitor S&OP plans to ensure continued alignment with the master production schedule
  • Identify any deviation from established plans and develop recovery plans within the execution horizon with communication of delays and changes to the impacted Supply Planner
  • Lead weekly operations meetings to ensure that priorities and due dates are valid, clear and aligned across work centers in a manner that is shared, aligned and realistic and ensuring that no work centre is over loaded
  • Ensure that assumptions and master data used to build orders and schedules reflect demonstrated capacity and not aspirational goals
  • Provide planning parameters values needed for rough cut and detailed capacity planning, including lead times, yields, success rates, run rates and shop calendars to ensure planners have the correct planning assumptions for production planning and scheduling
  • Own and enforce the CMO schedule time fences: frozen, trading and free, manage escalation and decision-making around planning time fence crashes
  • Own defining the planning recipes and work with master data owners to ensure that data used for production planning and scheduling are accurate and up to date, ensure transactional data at CMOs is competed in a timely manner
  • Partner with Supply Chain Planners to prioritise of activities when conflicting priorities arise and make trade off when necessary
  • Understand BioMarin’s packaging strategy together with CMO and Biomarin packaging capacity, capabilities and other packaging complexities (such as Brexit, serialization, artwork, PQs) to ensure the best decisions are made regarding pack site usage
  • Support the Long Range Planning and budgeting process
  • Communicate Key Performance Indicators (KPIs) to Supply Planning and participate in root-cause analysis


The scope of this External Master Scheduler role extends to filling (drug product) and packaging (finished goods) CMO sites.

The work product from the Master Scheduler will indirectly support product revenue and other programs executed in the network, will be a major driver for Contract Manufacturing Organization expenses, and will highly impact operational and transportation costs of external operations.

The Master Scheduler is an individual contributor role. This crucial role is also a member of the wider BioMarin Supply Chain community and participates in network initiatives and efforts, including improving governance, and delivering Supply Chain Strategic objectives.


  • Bachelors in Supply Chain Management or business related area required
  • APICS certification (CPIM, CRIM, CSCP) preferred
  • Operational Excellence, Lean Process development, Six Sigma tools and techniques are desirable
  • Proficient knowledge of Microsoft Excel and Powerpoint required
  • Formal Oracle training is desirable

  • Minimum 5 years direct experience in a Master Scheduling role
  • Minimum 8 years’ operations experience preferably in a pharmaceutical or biotech (GMP) manufacturing organization
  • Experience in ERP systems required, Oracle experience is desirable
  • Knowledge and experience of data gathering, data analysis including business process metrics and measures linking to business KPIs
  • Experience with modeling, analysis and management reporting
  • Participation in S&OP cycles is desirable
  • Strong communication skills (oral, written, formal), with a proven ability to understand key role concepts and communicate with business stakeholders at all levels of the organization
  • Strong organizational skills, as well as the ability to manage multiple priorities with competing demands
  • Strong analytical, data processing and problem-solving skills
  • Proficiency in process formulation and improvement
  • Proficiency in working effectively in a fast paced, complex, dynamic and global business
  • Demonstrated ability to partner with other functional groups to achieve business objectives required
  • Business acumen as well as commercial and financial understanding
  • Ability to make sound decisions in an environment where complete information is not always available
  • Comfortable and effective working indirectly through others

This is a crucial role which reports to senior leadership within the Supply Chain organization.

We are an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability status, protected veteran status, or any other characteristic protected by law.

About our location



Hiring Insights

We treat rare diseases, and that gives us rare opportunities. Chris Brodeur, Director, Corporate Compliance
Return to the top of the page