GlaxoSmithKline is seeking a Principal Scientist in Stevenage to lead initiatives in targeted biologics for cancer therapy. The role requires a PhD in Cancer Biology or related fields and extensive experience in drug discovery and cross-functional leadership. The successful candidate will collaborate with internal and external partners, contribute to biologics development, and leverage bioinformatic data for target identification. A hybrid working model is offered, alongside competitive benefits including salary, annual bonus, and healthcare programs.