Analytical Scientist (Internal Only)

Job Description

Internal Only

Job Description 

About Preventx

Preventx is a fast-growing technology company with more than 13 years’ experience as the market leader in online sexual health and STI sampling services. We work with over 60 local authority regions and NHS providers across the UK and are a trusted partner of the NHS. Our services have enabled around 1.7m people to test for STIs, improving public health whilst saving money. With recent investment, the company is committed to growth and continuous improvement. You will join a supportive team where you’ll be encouraged to do your best work and define the way we use data in the business.

Key Responsibilities & Duties

• Supervise daily laboratory operations and provide technical guidance to laboratory technicians. 

• Serve as the primary point of contact for laboratory technicians in the absence of the Laboratory Management.

• Receive, book, and prepare a variety of biological samples, including urine, swabs, and blood. 

• Operate and maintain high-throughput serological and molecular analysers. 

• Perform manual confirmatory assays where required. 

• Review, release and report test results. 

• Conduct method validation, verification, and troubleshooting of analytical processes. 

• Identify, log, resolve, and report problem samples and analytical issues. 

• Ensure full compliance with the laboratory’s Quality Management System and ISO 15189 accreditation standards. Actively participate in UKAS assessment visits. 

• Participate in External Quality Assessment (EQA) and Internal Quality Assessment (IQA) programs. 

• Maintain comprehensive laboratory records, including quality control logs, equipment maintenance records, and CAPA documentation. 

• Perform acceptance testing for new equipment, reagents, and consumables; ensure ongoing equipment calibration, mapping, and functionality. 

• Promote and uphold Good Laboratory Practice (GLP) to ensure accuracy and precision in all activities. 

• Comply with all laboratory policies, including those related to data protection, confidentiality, waste management, and conduct. 

• Manage and validate stock levels; receive and validate deliveries of laboratory consumables and reagents.  

• Deliver training to laboratory personnel within area(s) of expertise. 

• Ensure completion and documentation of all scheduled maintenance, calibration, and servicing tasks. 

• Contribute to general laboratory upkeep, including analyser maintenance, waste disposal, and housekeeping. 

• Handle and dispose of confidential and hazardous waste safely and in accordance with regulations. 

Shift Pattern

The preferred candidate will have the following experience, abilities, and aptitudes: 

Criteria 

Essential 

Qualification 

• Hold a degree in a relevant scientific subject or to have relevant experience.  

Knowledge and 

Experience 

• Good knowledge of laboratory practice and experience working in a laboratory environment.  

Skills 

• Ability to work independently and as part of a group. 


• Efficient, adaptable, methodical and organised, with good attention to detail. 


• Good hand-eye coordination and manual dexterity. 


• Awareness of cross-contamination avoidance and handling of confidential information is essential. 


• Ability to work with minimum supervision.  

Equity, Diversity & Inclusion at Preventx

At Preventx, we believe diversity drives innovation and inclusion strengthens our impact. We’re committed to creating a workplace that values individual differences and fosters a culture of respect, belonging, and growth.

We welcome applications from people of all backgrounds, identities, and experiences—including those from underrepresented communities. If you need any support with your application or adjustments during the recruitment process, we’re here to help.