Demand Forecasting Manager - secondment

Site Name: UK – London – New Oxford Street
Posted Date: Feb 16 2026

The Regional Demand Forecasting Manager is responsible for the development of a robust, un-biased and comprehensive sales forecast for all SKUs, across all therapies, in this case specifically looking after a portfolio of Tier 2/3 Markets, that are managed by the Customer Supply Chain Organisation, Global Supply Chain. The demand plans will ensure that there is the appropriate level of inventory available in the corresponding MMWs/LSPs and LOCs.

• Responsible for leading the volume forecasting process to drive improvements in forecast accuracy, bias, working capital and customer service levels.
• Manage exceptions to standard statistical baseline generation and collaborate with Centre of Excellence to review and agree improvement actions, highlighting related market dynamics.
• Responsible for the monitoring of demand forecasting KPIs and evaluation of forecast value-added, highlighting key impact drivers with commercial/finance, review assumptions, and propose improvements.
• Prepare forecast inputs into the key Core Commercial Cycle meetings, including Pre-Demand Review Meetings, Demand Review Meetings, and Regional Meetings such as EU MPR and EU S&OP.
• Manage Risks & Opportunities with visibility to scenarios to aid decision-making, including management of changes on product lifecycle and changes to the product portfolio.
• Drive Ai Forecasting Adoption and contribute to the implementation of new system, tools and processes following the Global Supply Chain Transformation deployment for Europe.

• University degree in Economics, Supply Chain, Business, Logistics, Engineering or a related field, or equivalent practical experience.
• Experience on multiple business cycle in Commercial Sales / Marketing / Demand Forecasting / Finance operations, ideally in a pharmaceutical environment.
• Promotes a ‘one number’ mindset to drive business decision-making and forecast transparency / functional accountability.
• Strong analytical skills and experience in working with and visualizing data
• Strong planning ability & able to work on own initiative.

• Supply Chain Professional Qualification.
• Excellent written and verbal communications skills in English, and preferably fluency in one or more additional European languages.
• Excellent interpersonal skills with ability to lead cross functional teams, and influence at all levels of the organization.
• Good knowledge of supply chain forecasting software systems and processes, of SAP APO or OMP and statistical forecasting.
• Strong networking, planning and organisational skills with a demonstrated capability to manage complex projects with short timelines.
• Specialist knowledge of Demand Forecasting systems and processes, preferably managing strategic therapies/brands/market.

Uniting science, technology and talent to get ahead of disease together.

GSK is a global biopharma company with a purpose to unite science, technology and talent to get ahead of disease together. We aim to positively impact the health of 2.5 billion people by the end of the decade, as a successful, growing company where people can thrive. We get ahead of disease by preventing and treating it with innovation in specialty medicines and vaccines.

We focus on four therapeutic areas: respiratory, immunology and inflammation; oncology; HIV; and infectious diseases – to impact health at scale.

People and patients around the world count on the medicines and vaccines we make, so we’re committed to creating an environment where our people can thrive and focus on what matters most. Our culture of being ambitious for patients, accountable for impact and doing the right thing is the foundation for how, together, we deliver for patients, shareholders and our people.

GSK is an Equal Opportunity Employer. This ensures that all qualified applicants will receive equal consideration for employment without regard to race, color, religion, sex (including pregnancy, gender identity, and sexual orientation), parental status, national origin, age, disability, genetic information (including family…