Quality Control Scientist

Are you the kind of scientist who notices the details others miss? Good, we've got just the role for you.

At LEX Diagnostics, we're on a mission to make diagnostics faster, simpler, and more accessible, without compromising performance. Our LEX VELO point-of-care PCR system is built to bring lab-quality results wherever they're needed. And behind every accurate test result is a set of reagents that have passed the highest standards of quality control.

That's where you come in.

We're looking for a Quality Control Scientist to join our Reagent Production team and take on a hands‑on role assessing the consistency and quality of our reagents, from raw materials to final products. You'll be running RT-qPCR assays, troubleshooting issues, collaborating across teams, and documenting results in a way that makes regulators smile.

If you're comfortable in the lab, curious about how things work (or don't), and excited to play a key role in getting a new IVD to market, we'd love to talk.

• Running QC tests on incoming materials, in-process reagents, and finished products using qPCR and RT-qPCR
• Following established protocols and documenting results with clarity and accuracy
• Working closely with the Biology, Manufacturing and Quality teams to ensure every batch meets our gold-standard
• Supporting continuous improvement efforts and helping refine QC methods as the product scales
• Ensuring everything is done to Good Laboratory Practice and aligned with our ISO
  13485/FDA‑aware processes
• Contributing to the reliability and reproducibility of one of the fastest PCR systems in the world

What we're looking for

• A degree in molecular biology or a related field
• Hands‑on experience with qPCR/RT-qPCR (and ideally the know‑how to troubleshoot it)
• An appreciation for precision, accuracy, and documentation — with excellent attention to detail
• Strong communication skills and the ability to present data clearly and confidently
• Someone who's motivated, proactive, and thrives in a fast‑paced, collaborative lab environment

• Previous experience in IVD or medical diagnostics
• Familiarity with ISO
  13485 or similar quality systems
• Experience in QC testing for regulated products

You’ll also get:

• A front row seat in a company bringing its first product to market
• The chance to grow with the role and help shape our QC approach
• A clear purpose: what you do here will directly improve healthcare outcomes around the world

We also offer fantastic employee benefits including:

• Employer pension contribution of 10% (+3% personal contribution)
• Private Medical Insurance
• Life insurance
• 25 days' annual holiday plus bank holidays
• Discounts and memberships to local sports facilities and the theatre

LEX Diagnostics was founded in 2020. Our innovative system integrates effortlessly into primary care settings, bringing PCR‑level sensitivity to urgent care centres, physicians, labs, and pharmacies, all at a significantly lower cost per test than other molecular platforms.

2026 is seeing the elevation of the LEX Diagnostics team from startup environment into a well supported, international diagnostics powerhouse without sacrificing the very thing that made our team successful, innovation. You'll help drive forward a platform within a growing team that needs to invest in your development and career growth.

Come help us build something extraordinary. We'd love to hear from you.