Principal Scientist – LC-MS/MS Bioanalysis (PK/PD, Complex Modalities)
Confidential
Posted: April 2, 2026
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Quick Summary
Scientist leading LC-MS/MS bioanalytical programme, providing scientific leadership and SME support across PK and PD studies, leading troubleshooting of complex analytical challenges, assay strategy, and client engagement.
Required Skills
Job Description
Role Overview
We are seeking a Principal Scientist to act as a subject matter expert across LC-MS/MS bioanalytical programmes supporting PK and PD studies. This role provides scientific leadership across multiple studies, focusing on complex problem-solving, assay strategy, and client engagement.
Key Responsibilities
Provide scientific leadership and SME support across LC-MS/MS studies
Lead troubleshooting of complex analytical challenges, including matrix effects, sensitivity limitations, and assay robustness
Advise on method development, optimisation, and validation strategies
Support study teams in resolving technical issues and ensuring consistent assay performance
Contribute to client interactions, including scientific discussions, data interpretation, and method justification
Support proposals, bid defences, and scientific strategy discussions
Mentor and support development of laboratory scientists
Technical Expertise
Strong knowledge of LC-MS/MS theory, including triple quadrupole and HRMS systems
Experience with sample preparation techniques such as SPE, LLE, protein precipitation, and hybrid workflows
Deep understanding of quantitative bioanalysis, including calibration strategies, selectivity, and matrix effects
Experience with Complex Modalities
Peptides and proteins
Oligonucleotides
Antibody-drug conjugates and related conjugates
Regulatory and Client Experience
Extensive experience working under GLP and GCP
Strong understanding of regulatory guidance (FDA, EMA, MHRA, M10)
Experience supporting audits and regulatory inspections
Proven ability to lead scientific discussions with clients and defend analytical approaches and data
Ability to communicate complex technical issues clearly and challenge client assumptions where appropriate
Qualifications and Experience
PhD in Analytical Chemistry or related field, or MSc with significant industry experience
10 to 15 or more years of LC-MS/MS bioanalysis experience
Demonstrated expertise in method development, validation, and advanced troubleshooting