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A leading pharmaceutical company in Stevenage is seeking a Principal Scientist to drive innovative toxicology experiments and provide expertise in advanced cellular modelling to support drug development projects. The ideal candidate will have a MSc or PhD in relevant biological sciences, with significant experience in cellular biology and toxicology. This role requires on-site presence and offers opportunities for collaboration and leadership in a cutting-edge laboratory environment.
Location: UK, Hertfordshire, Stevenage. Posted: Oct 30 2025.
This role accounts for laboratory technical support and specialist advanced cellular modelling approaches to generate data that elucidate mechanisms of toxicity, understand species differences, identify novel translational safety biomarkers, and inform project decisions.
With knowledge and experience of cell culture and advanced cellular models (e.g., complex in vitro models, human model systems, micro physiological systems, and/or organ-on-chip models), the Principal Scientist will conduct paper and laboratory-based studies in support of predictive, mechanistic and translational toxicological investigations across new drug modalities (oligos, ADC, T‑cell engagers, etc.) for projects in discovery and development.
The scientist will provide subject matter expertise for specific technical or scientific areas such as organ toxicities or cell model techniques.
This is a lab-based position requiring a regular on‑site presence at GSK Stevenage.
This position has been agreed to be at the G8 level but may be considered at the G7 level for exceptional candidates.
Closing Date for Applications – 12th of November 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 will be used to assess your application.
GSK is an Equal Opportunity Employer. This ensures that all qualified applicants will receive equal consideration for employment without regard to race, colour, religion, sex (including pregnancy, gender identity and sexual orientation), parental status, national origin, age, disability, genetic information, military service or any basis prohibited under law.
Should you require adjustments to our process to assist you in demonstrating your strengths and capabilities, contact us on UKRecruitment.Adjustments@gsk.com or 0808 234 4391. The helpline is available from 8.30am to 12.00 noon Monday to Friday (times may vary during bank holidays).
Important notice to Employment businesses/Agencies: GSK does not accept referrals from employment businesses or agencies for the vacancies posted on this site. All employment businesses or agencies are required to contact GSK's commercial procurement/human resources department to obtain prior written authorization before referring candidates. In the absence of such authorization, any actions undertaken by the employment business or agency are deemed performed without consent or contractual agreement. GSK shall therefore not be liable for any fees arising from such actions.
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