Analytical Scientist (Internal Only)

Preventx; Sheffield; On-site; GBP 30,000 - 46,000; Full time

Job summary

Preventx is recruiting a Laboratory Analyst to supervise daily lab operations, guide technicians and handle diverse samples. You will operate high-throughput serological and molecular analysers, review results, and ensure strict quality compliance within ISO 15189 and GLP frameworks.

The role includes maintaining quality control records, supporting IQA/EQA programs, and delivering training to staff while upholding data protection and confidentiality standards.

Qualifications

• Hold a degree in a relevant scientific subject or equivalent experience.
• Good knowledge of laboratory practice and environments.
• Ability to work independently and as part of a group.

Responsibilities

• Supervise daily laboratory operations and guide technicians.
• Receive, book, and prepare biological samples (urine, swabs, blood).
• Operate high-throughput serological and molecular analysers.
• Review, release and report test results.
• Ensure compliance with ISO 15189 and GLP standards.
• Maintain records, QA/CAPA documentation, and maintenance logs.

Skills

Independent worker

Detail oriented

Laboratory techniques

Manual dexterity

Education

Degree in a relevant scientific subject

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.