Principal R&D Scientist – Life Sciences
Berkshire | Up to c.£45,000 | Full-time | On-site lab-based role
We’re excited to be recruiting for an experienced Principal R&D Scientist to join an innovative life sciences team based in Berkshire. This is a fantastic opportunity for a skilled scientist with hands-on ELISA experience to take ownership of high-impact research projects and provide technical leadership to a growing R&D function. You’ll lead experimental design, oversee assay development, and support junior scientists in a collaborative and forward-thinking environment.
About the Role
As a Principal R&D Scientist, you’ll play a key role in the planning and execution of scientific projects across the ELISA product portfolio. You’ll lead on assay development, troubleshoot technical issues, and drive improvements in processes and performance. With a strong focus on innovation and quality, you’ll also support wider business functions by providing technical expertise and insights.
Key Responsibilities
Design, plan, and conduct laboratory experiments to support product development
Lead and manage assigned projects with minimal supervision
Develop and maintain ELISA assays, suggesting improvements where needed
Analyse, interpret, and present experimental data to internal and external stakeholders
Provide training, mentoring, and supervision to R&D Technicians
Support purification and conjugation processes (experience with AKTA systems desirable)
Collaborate cross-functionally with other departments on technical matters
Contribute to ongoing R&D meetings and strategic discussions
About You
BSc (or higher) in a relevant scientific discipline
At least 5 years’ experience in an industrial R&D setting
Proven experience in ELISA design and development
Skilled in experiment planning, data analysis, and scientific reporting
Comfortable presenting data to varied audiences
Experience in mentoring or supervising junior staff
Knowledge of protein purification and conjugation techniques (desirable)
Strong problem-solving, time management, and communication skills
Collaborative mindset with the ability to work independently
Unfortunately this company is unable to sponsor and so we can only consider those who already have the right to work in the UK on a permanent basis.
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.
🚀 Our Mission
To support innovative organisations by delivering the talent they need to grow, evolve, and make a meaningful impact in their field.
🔎 Our Core Values
Challenge
We’re comfortable working in complex, technical spaces. We approach every brief with curiosity and care, asking the right questions to deliver people who can genuinely move your organisation forward.
Collaboration
We see recruitment as a partnership. That means open communication, transparency, and shared goals, whether you’re building a team or looking for your next role.
Commitment
We take pride in the work we do. We’re committed to high standards, long-term relationships, and doing what’s right for our clients, our candidates, and the industries we serve.
💡 Our Purpose
To contribute to a more sustainable and innovative future by helping organisations in science and technology attract and retain the talent they need to grow responsibly and with purpose.
🌍 Our Reach
Headquartered in South London, we work with clients and candidates across the UK, Europe, and the USA.
🔬 Areas of Expertise
Biotechnology
Pharmaceuticals
Chemicals & Materials
Food Technology
Clean Technology
Electric Vehicles & Sustainable Engineering
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