Analytical Scientist – Mass Spectrometry in Stevenage

Join GSK's Extended Characterization Europe team as an Analytical Scientist, supporting the analytical development and characterisation of biopharmaceutical molecules. This predominantly laboratory-based role will use LC-MS and LC-MS/MS to generate scientific understanding that supports the development and control of new drug substances and products.

You will work independently and collaboratively across Discovery and CMC Development teams, combining strong scientific judgement, data analysis, communication and organisation to help deliver a novel pipeline of medicines to patients.

We create a place where people can grow, be their best, be safe, and feel welcome, valued and included.

Benefits

• competitive salary
• an annual bonus based on company performance
• healthcare and wellbeing programmes
• pension plan membership
• shares and savings programme
• hybrid working model

Discover more about our company wide benefits and life at GSK on our webpage Life at GSK | GSK.

Responsibilities

• Plan, execute and interpret LC-MS and LC-MS/MS experiments for the characterisation of biopharmaceutical molecules.
• Develop, optimise and troubleshoot analytical methods, experiments and instrumentation.
• Investigate molecular structure, product quality attributes and post-translational modifications to support the identification and assessment of critical quality attributes.
• Support early-phase programmes through forced degradation studies, comparability assessments, process understanding and technical transfer.
• Critically evaluate complex analytical datasets, draw scientifically robust conclusions and recommend appropriate next steps.
• Communicate findings clearly, prepare high-quality technical documentation and maintain high standards of data integrity, quality and laboratory safety.

Basic Qualifications & Skills

• PhD, MSc or equivalent relevant experience in Analytical Chemistry, Chemistry, Biochemistry, Pharmaceutical Sciences or a related discipline.
• Experience of LC-MS or LC-MS/MS method development and execution for biopharmaceuticals in a pharmaceutical or biotechnology setting.
• Good understanding of protein biochemistry, post-translational modifications and the relationship between molecular structure, function and product quality attributes.
• Ability to independently plan and execute analytical experiments and troubleshoot scientific and technical challenges.
• Experience working in matrix teams and delivering time-bound, multi-project work packages with strong organisation and prioritisation.
• Strong data interpretation, written and verbal communication skills, with a commitment to data integrity, scientific standards, safe laboratory practice and effective documentation.

Preferred Qualifications & Skills

• Knowledge of protein glycosylation and analytical workflows for N-linked glycan analysis.
• Understanding of antibody sequence and structure-function relationships and critical quality attributes.
• Experience with liquid-handling automation systems.
• Experience with mass spectrometry data‑analysis software such as Protein Metrics or equivalent platforms.
• Experience handling large datasets and conducting statistical analysis using software such as JMP or SIMCA.
• Understanding of biopharmaceutical manufacturing processes and confidence working across teams with shared laboratory instrumentation.

Location

For candidates seeking to be located at our Stevenage site, this role will temporarily be based at Stevenage. However, the Company plans to relocate its offices to Ware. The location of this role will therefore subsequently change to Ware in accordance with timelines to be set by the Company. The relocation is currently proposed to take effect by early 2029.

Closing Date for Applications

23rd November 2026 (COB)

Why GSK?

We are 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.

We believe in an agile working culture for all our roles. If flexibility is important to you, we encourage you to explore with our hiring team what the opportunities are.

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.

We want GSK to be a place where people feel inspired, encouraged and challenged to be the best they can be. A place where they can be themselves – feeling welcome, valued and included. Where they can keep growing and look after their wellbeing. So, if you share our ambition, join us at this exciting moment in our journey to get Ahead Together.