Senior Scientist: Assay Development Lead

SRG; Slough; On-site; GBP 80,000 - 105,000; Full time

Job summary

SRG is seeking an experienced Senior Scientist – Assay Development to lead the development of next-generation diagnostic assays and provide scientific leadership within an innovative, early-stage health technology business focused on women's hormonal health.

The role is senior and hands-on, defining assay development strategy and driving analytical performance from concept to validation, collaborating with engineering, clinical, regulatory, and product teams to shape both science and product

Qualifications

• PhD in Biochemistry, Analytical Chemistry, Biomedical Science, Bioengineering, or related discipline.
• Extensive industry experience in assay or diagnostic development.
• Hands-on experience developing immunoassays, including ELISA-based technologies.
• Experience taking assays from concept through validation and ideally towards commercialisation.
• Strong quantitative, analytical, and statistical skills.
• Experience working with human biological samples such as blood, saliva, or urine.
• Excellent scientific communication skills and the ability to explain complex concepts clearly.
• The ability to work independently and thrive within an entrepreneurial environment.

Responsibilities

• Lead the design and development of quantitative immunoassays and related diagnostic technologies.
• Define scientific strategy and development roadmaps.
• Drive assay optimisation across sensitivity, specificity, precision, reproducibility, and stability.
• Establish best practice for scientific rigor, experimental design, and data integrity across development activities.
• Design and execute analytical validation studies.
• Translate laboratory-based assays into scalable diagnostic formats.
• Support development of point-of-care, biosensor, microfluidic, or cartridge-based technologies.
• Ensure scientific activities are supported by robust statistical analysis and data interpretation.
• Author and maintain development, validation, and technical documentation.
• Ensure documentation meets regulatory and design-control requirements.
• Maintain traceable and audit-ready scientific records.
• Support future regulatory submissions and technical file development as required.
• Partner closely with engineering, clinical, regulatory, and external collaborators.
• Support scientific decision-making across product development activities.
• Identify and engage key scientific advisors and external experts.
• Contribute technical leadership across strategic projects.
• Help build scientific capability within the business.
• Mentor and support future scientific hires.
• Promote a culture of scientific excellence, curiosity, and continuous improvement.

Skills

Assay development

Immunoassays

Statistical analysis

Data interpretation

Scientific communication

Education

PhD in Biochemistry/Analytical Chemistry/Biomedical Science/Bioengineering

Tools

ELISA

Job description

SRG is seeking an experienced Senior Scientist – Assay Development to lead the development of next-generation diagnostic assays and provide scientific leadership within an innovative, early-stage health technology business focused on women's hormonal health.

The role is senior and hands-on, defining assay development strategy and driving analytical performance from concept to validation, collaborating with engineering, clinical, regulatory, and product teams to shape both science and product