Forecasting Manager - Vaccines

Site Name:

USA - Pennsylvania - Philadelphia

Posted Date: Jan 15 2026

Forecasting Manager – Vaccines Business Unit

Are you looking for an exciting opportunity to create patient centered, data-driven forecasts and partner with commercial stakeholders to drive growth in life saving vaccines?

If so, then this Forecasting Manager role is for you!

The role of Forecasting Manager sits within the US Vaccines Forecasting team and will maintain accurate and insight driven gross sales and patient forecasts for GSK’s Pediatric and Established Adult Vaccines. This role requires strong analytical and interpersonal skills and ability to utilize a wide variety of forecasting approaches to support commercial priorities, competitive positioning, and supply chain decisions.

This role will provide YOU the opportunity to progress YOUR career by building your expertise in forecasting, commercial insights, and pharmaceutical business acumen.

Responsibilities of the role include:

• Establish, document, and maintain financial and manufacturing forecasts on a monthly cycle and annually revise Long-Range Forecast, in partnership with global and local Finance, Marketing, Supply Chain, and Commercial Insights teams.
• Maintain SKU level forecasts for portfolio of Pediatric and Established Adult Vaccines in the US (including Puerto Rico)
• Present forecast assumptions, inclusive of risks and opportunities, to multiple management levels
• Ensure accuracy of forecasts through industry standard accuracy and bias metrics; identify corrective actions as appropriate.
• Support US financial submissions and quarterly earnings call, as needed.
• Collaborate with Marketing, Sales, Commercial Insights, Market Access, and Supply Chain peers on modeling events, communicating issues, and responding to requests from senior leadership.

Why you?

Basic Qualifications:

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

• BS/BA degree in Finance, Accounting, Engineering, Analytics, Statistics, Biology/Chemistry or Business
• 5+ years of post-degree experience in the following: Financial, analytics, or gross sales forecast models with multiple variables and event modeling.
• Analysis of financial or healthcare market data and trends, assessing financial impacts and identifying risks and opportunities
• Translating data into narratives through reports, dashboards, or presentations and communicating to multiple management levels
• MS Excel and data modeling; utilizing pivot tables, charts, and LOOKUP & SUMIF functions

Preferred Qualifications:

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

• Advanced degree in science and/or business
• Demonstrated communication and presentation skills
• Experience with patient claims data and patient flow modeling
• Proficiency creating impactful visuals in MS PowerPoint
• Strong learning agility to build business acumen
• Proven collaboration skills and able to work effectively across a matrix environment
• Ability to work independently and prioritize effectively
• Experience in pharma, biotech, healthcare or alike industry

#GSK-LI

Please visit GSK US Benefits Summary to learn more about the comprehensive benefits program GSK offers US employees.

Why GSK?

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.

Should you require any adjustments to our process to assist you in demonstrating your strengths and capabilities contact us at [email protected] where you can also request a call.

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

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.

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