Demand Forecasting Manager

Site Name: UK – London – New Oxford Street
Posted Date: Aug 7 2025

Demand Forecasting Manager (12 month Fixed Term Contract)

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.

We create a place where people can grow, be their best, be safe, and feel welcome, valued and included. We offer a competitive salary, an annual bonus based on company performance, healthcare and wellbeing programmes, pension plan membership, and shares and savings programme.

We embrace modern work practises; our Performance with Choice programme offers a hybrid working model, empowering you to find the optimal balance between remote and in-office work.

Discover more about our company wide benefits and life at GSK on our webpage Life at GSK | GSK

• Manage the demand planning and volume forecasting process for GSK’s portfolio of Tier 2/3 markets to improve service levels, reduce working capital and minimize stock write-offs, and lead monthly cross-functional Pre-Demand Review Meetings to make the necessary adjustments based on the market intelligence supplied by Commercial, Supply Chain and/or Finance teams.

• Ensure a comprehensive total volume forecast through various methods, inputs and data, including, e.g., scenario planning, assessment of risks and opportunities, new product introduction, AI and statistical baseline planning, assessment of competitor activity and tender demand.

• Have functional alignment with the Regional Demand Forecasting Director and support the demand forecasting evolvement and vision by providing leadership for regional improvement projects and activities, securing as a result improved product availability and lower working capital.

• Support the Cluster Supply Chain Lead and the Demand Forecasting Director by preparing the necessary inputs for the Market and Regional Therapy DRM’s (ViiV, Oncology, Gen Meds, Specialty Care) ensuring excellence and effective reviews with Regional Commercial.

• Be responsible within the assigned markets for the monitoring, visualizing and sharing of demand forecasting KPIs and to drive improvements in accuracy, bias, working capital and supply service levels based on the analytics provided by yourself.

• Contribute to strategic global and regional projects that will use demand forecasting as a lever to unlock further benefits in GSK\’s supply chain including Inventory Reduction, write-off reduction, OTIF improvement, etc.

Why you?

Basic Qualifications & Skills:

We are looking for professionals with these required skills to achieve our goals:

• University graduate or relevant practical experience.

• Experience on multiple business cycle in Commercial Sales / Marketing / Demand Forecasting / Finance operations, ideally in a pharmaceutical environment.

• Specialist knowledge of Demand Forecasting systems and processes, preferably managing strategic therapies/brands/market.

• 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

Preferred Qualifications & Skills:

If you have the following characteristics, it would be a plus:

• Supply Chain Professional Qualification.

• Excellent written and verbal communications skills in English, and preferably fluency in one or more additional European languages.

• Strong planning ability & able to work on own initiative.

• 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.

Closing Date for Applications – 14th August 2025 (COB)

Please take a copy of the Job Description, as this will not be available post closure of the advert.

When applying for this role, please use the ‘cover letter’ of the online application or your CV to describe how you meet the competencies for this role, as outlined in the job requirements above. The information that you have provided in your cover letter and CV will be used to assess your application.

During the course of your application, you will be requested to complete voluntary information which will be used in monitoring the effectiveness of our equality and diversity policies. Your information will be treated as confidential and will not be used in any part of the selection process. If you require a reasonable adjustment to the application / selection process to enable you to demonstrate your ability to perform the job requirements, please contact 0808 234 4391. This will help us to understand any modifications we may need to make to support you throughout our selection process.

Why GSK?

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

GSK is a global biopharma company with a special purpose – to unite science, technology and talent to get ahead of disease together – so we can positively impact the health of billions of people and deliver stronger, more sustainable shareholder returns – as an organisation where people can thrive. We prevent and treat disease with vaccines, specialty and general medicines. We focus on the science of the immune system and the use of new platform and data technologies, investing in four core therapeutic areas (infectious diseases, HIV, respiratory/ immunology and oncology).

Our success absolutely depends on our people. While getting ahead of disease together is about our ambition for patients and shareholders, it’s also about making GSK a place where people can thrive. We want GSK to be a place where people feel inspired, encouraged and challenged to be the best they can be. A place where they can be themselves – feeling welcome, valued, and included. Where they can keep growing and look after their wellbeing. So, if you share our ambition, join us at this exciting moment in our journey to get Ahead Together.

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 medical history), military service or any basis prohibited under federal, state or local law.

We believe in an agile working culture for all our roles. If flexibility is important to you, we encourage you to explore with our hiring team what the opportunities are.

Should you require any adjustments to our process to assist you in demonstrating your strengths and capabilities contact us on or 0808 234 4391. The helpline is available from 8.30am to 12.00 noon Monday to Friday, during bank holidays these times and days may vary.

Please note should your enquiry not relate to adjustments, we will not be able to support you through these channels. However, we have created a UK Recruitment FAQ guide. Click the link and scroll to the Careers Section where you will find answers to multiple questions we receive .

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