
Scientist – Genotyping & Molecular Biology
Location:Harlow, Essex (Onsite)
Salary:£30,000 - £40,000
Contract:Permanent, Full Time
We’re recruiting for a growing biotechnology organisation seeking a Scientist – Genotyping & Molecular Biologyto join their onsite laboratory team in Essex. This is a hands-on opportunity for someone with a strong foundation in molecular biology who enjoys problem-solving, assay development, and supporting customers with technical troubleshooting. Previous troubleshooting experience would be beneficial, although training can be provided. Experience with KASPor PACEtechnologies would also be advantageous.
The Role
This varied position combines laboratory science, technical support, quality control, and R&D activities. The successful candidate will contribute to PCR-based genotyping projects while supporting customers and internal product development initiatives. The role would suit someone with previous R&D or troubleshooting laboratory experience who is looking to grow within a collaborative and scientifically driven environment.
Key Responsibilities
Provide technical support to customers via phone and email
Troubleshoot customer assays and experimental workflows
Design, optimise, and validate PCR-based genotyping assays
Carry out DNA extraction, quantification, and quality assessment
Support internal R&D and new product development projects
Perform QC testing on reagents, PCR master mixes, and instrumentation
Assist with reagent manufacture and batch testing activities
About You
You will ideally be proactive, detail-oriented, and comfortable working across a range of laboratory activities. Strong communication skills and a practical, problem-solving mindset are important for success in this role.
Essential Requirements
Degree in Molecular Biology, Genetics, Plant Science, or a related discipline
Hands-on molecular biology laboratory experience
Experience with PCR and DNA handling techniques
Ability to work onsite in Harlow, Essex
Right to work in the UK
Desirable Experience
PCR assay design and optimisation
Genotyping workflows, particularly within plant or crop genetics
Experience with KASP or PACE technologies
DNA extraction from plant material
Laboratory QC procedures
Previous technical support or customer-facing experience
Apply
If you’re looking for an opportunity to develop your molecular biology career within an innovative and growing biotech environment, we’d love to hear from you.

Cranleigh STEM is a specialist recruitment partner in STEM, Sustainability, and SHEQ. We work with innovative organisations and purpose-led professionals to help solve some of the world’s most pressing challenges, from advancing clean technologies to driving scientific discovery.
We understand that progress in these fields depends on people. Our role is to connect the right individuals with the right teams, whether that’s scientists in the lab, engineers on the ground, or leaders at the helm.
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Challenge
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Headquartered in South London, we work with clients and candidates across the UK, Europe, and the USA.
🔬 Areas of Expertise
Biotechnology
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Clean Technology
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