Location: Hatfield, Hertfordshire, UK
Position Type: Full-time
Seniority: Senior Scientist / Principal Scientist (based on experience)
Salary: Competitive, dependent on experience
Application Deadline: 25 August 2025
Please send your resume to: [email protected]
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About Pharmidex:
Pharmidex is a respected, science-led, MHRA-accredited, GLP-compliant, AAALAC approved, preclinical CRO based in the UK. Pharmidex offers integrated in vitro ADME, bioanalysis, in vivo pharmacology, and discovery DMPK services supporting global start-ups, biotech, pharmaceutical and non-profit organisations. We are and have supported drug discovery and development for over two decades, conducting more than 16,000 studies to date contributing to more than seventeen drugs at various stages of clinical development.
With an expanding portfolio across Respiratory, Oncology, CNS, Metabolic and Immunological diseases, we are growing our preclinical teams to meet increasing demand for high-quality, translational studies. From early PK screening to regulatory bioanalysis, we offer flexible, high-quality scientific support tailored to our clients’ needs.
At Pharmidex, we are passionate about advancing new therapies and improving human health. Our mission is driven by excellent science, a commitment to quality, and a collaborative spirit that runs through everything we do.
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Job Summary:
We are currently looking for talented and motivated Bioanalyst to join our Bioanalysis Group at our Hatfield facility. Opportunities are available on both a permanent and part-time basis, offering flexibility for the right candidates.
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Key Responsibilities:
•Perform quantitative analysis of drug/test compounds in biological matrices using LC-MS/MS for both discovery and regulatory studies.
•Perform method development and validation for bioanalytical assays.
•Accurately follow SOPs, protocols, and analytical procedures, ensuring complete and traceable documentation
•Prepare biological samples using various extraction techniques (e.g. protein precipitation, liquid-liquid extraction, solid phase extraction)
•Analyse and interpret data to ensure quality and integrity of results; flag and investigate any outliers or deviations.
•Collaborate with colleagues across departments to support preclinical and clinical studies.
•Ensure timely delivery of results to meet client and project deadlines.
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Your Background:
•Degree (BSc/MSc/PhD) in Chemistry, Biochemistry, or related discipline
•Hands-on experience in LC-MS/MS bioanalysis
•Working knowledge of GLP and/or GCP practices
•Strong attention to detail and excellent record keeping.
•Ability to work independently and as part of a team under time pressure.
•Good problem-solving skills and effective communication abilities
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Why Join Pharmidex?
For over 20 years, Pharmidex scientists and staff have worked side-by-side with our clients to support the discovery and development of novel therapeutics. When you join Pharmidex, you become part of a team committed to making a real difference in global health through innovative science, operational excellence, and client-focused delivery. Whether your background is in life sciences, operations, administration, or beyond, your contribution is key to advancing new medicines and shaping the future of Pharmidex. In return, we offer a collaborative and supportive environment where your career can thrive.
Key benefits include:
•Opportunity to work on diverse and impactful preclinical studies.
•Be part of a growing team where your expertise will help shape model development and client delivery.
•Flexible and collaborative culture with exposure to cross-disciplinary science.
•Career development aligned with company growth.
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What We Offer:

•Competitive salary based on experience.

•Defined career development path with mentorship and training support.
•Company pension scheme with employer contribution.
•Life insurance (4x annual salary).
•Employee rewards and discounts platform.
•Free onsite parking and subsidised staff canteen.
•Opportunities to volunteer and contribute to social impact projects.
•Being part of a purpose-driven company that works with over three hundred clients. globally, including top pharma and emerging biotech’s.