Location
London

Hours
Hybrid working model with a mix of on-site and remote work. Fully remote or home-working arrangements are not available for this role.

Salary
Not specified

About the Role
At GSK, we have bold ambitions for patients, aiming to positively impact the health of 2.5 billion people by the end of the decade. Our R&D focuses on discovering and delivering vaccines and medicines, combining our understanding of the immune system with cutting-edge technology to transform people's lives. GSK fosters a culture ambitious for patients, accountable for impact, and committed to doing the right thing, focusing efforts on accelerating significant assets that meet patients' needs and have the highest probability of success. We're uniting science, technology, and talent to get ahead of disease together.

You will provide high-level administrative and operational support that keeps the Onyx team running smoothly, day to day and across the globe. Working closely with your principal and, on occasion, his direct reports, you will anticipate needs before they arise—protecting time, removing friction, and ensuring people, meetings, travel, and budgets all land where they should. This role requires excellent organisational skills, sharp attention to detail, genuine discretion, and confidence to juggle competing priorities in a fast-paced environment. We value clear communicators who lead with empathy, act with integrity, and focus on impact for patients and science.

This role offers growth, visible impact, and a chance to help unite science, technology, and talent to get ahead of disease together.

Key Responsibilities include:
- Proactively managing complex diaries for your principal and occasionally his direct reports, coordinating calendars across multiple stakeholders and time zones, anticipating conflicts and prioritising appointments.
- Coordinating onboarding of new starters and guiding them through their first weeks, liaising with Line Managers, HR, IT, and Facilities to ensure smooth joining experiences.
- Providing general administrative support across all Onyx locations, including guest access and maintaining the Onyx 'Trip Wiki' with practical, current advice.
- Arranging domestic and international travel via Concur, managing expense reports and reconciliation with full policy compliance.
- Raising purchase orders using Ariba, tracking invoice payments with Fiori, and partnering with Finance, Procurement, and external suppliers.
- Booking and managing meeting rooms including virtual and hybrid setups, preparing agendas and materials, arranging session recordings, and organising management meetings, team events, off-sites, and internal activities from planning through execution.

Experience
Proven experience as a Personal Assistant, Executive Assistant, or in a similar role.
Demonstrated experience of complex diary management and booking domestic and international travel.
Familiarity with expense systems, purchase orders, and invoice tracking.
Confident using Microsoft Office and collaboration tools such as Slack.
Strong organisational and time-management skills with the ability to manage multiple tasks accurately and to deadline.
Excellent written and verbal communication skills.
A high level of discretion and professionalism when handling confidential information.

About You
Experience supporting senior leaders in a global organisation, coordinating across multiple time zones is a plus.
Hands-on experience with Concur, Ariba, Fiori, or comparable travel, procurement, and finance systems.
Familiarity with GSK internal systems and processes.
Experience coordinating onboarding and partnering with HR, IT, and Facilities teams.
Track record of organising team events, off-sites, and hybrid or virtual meetings end to end.
Experience within pharmaceutical, R&D, or technology environments.
Proactive and solutions-focused—spotting what is needed and acting without waiting to be asked.
Adaptable and calm under pressure, maintaining composure when priorities shift at short notice.
Team-oriented with strong interpersonal skills, building trusted relationships quickly across all levels.

Qualifications
Not explicitly specified, but relevant experience and skills as outlined above are essential.