Large Scale Chemist

Large Scale Chemist

Onyx Scientific | Manufacturing & Scale-Up | Pharmaceutical CDMO

Are you a chemist looking for a hands-on role where you can apply your technical expertise at scale and make a tangible impact?

At Onyx Scientific, we partner with academic, biotech, and pharmaceutical organisations worldwide, providing high-quality scientific support from early discovery through to commercial manufacture.

Due to continued growth, we are looking for a Large Scale Chemist to join our manufacturing and scale-up teams.

The Role

As a Large Scale Chemist, you will play a central role in scale-up activities, operating reactors in the 50L–100L range while working in line with company safety standards and SOPs. You will support the delivery of reliable, high-quality outputs and collaborate closely with colleagues across the business.

Key Responsibilities

• Perform kilo-scale chemistry with minimal supervision
• Operate large-scale reactor processes safely and effectively
• Maintain a high standard of cleanliness and housekeeping
• Write weekly reports with support and guidance
• Review completed documentation for accuracy and compliance
• Identify and report issues relating to paperwork or documentation
• Comply fully with company SOPs and training requirements
• Communicate delays, challenges, or issues clearly and constructively

About You

We are looking for someone who is enthusiastic, detail‑oriented, and motivated to develop their career in large‑scale and manufacturing chemistry within a regulated scientific environment.

You enjoy hands‑on chemistry and take pride in working safely and accurately at scale. You understand the importance of following SOPs, maintaining excellent housekeeping standards, and ensuring documentation is completed clearly, accurately, and on time. You will be comfortable working independently on defined tasks while contributing positively to a collaborative team culture.

You are organised and proactive in your approach, able to manage your daily workload effectively while remaining aware of project timelines and operational priorities. You communicate clearly and constructively, raising potential issues early and supporting the team in meeting shared goals and deadlines.

Essential / Preferred:

• Degree‑qualified in Chemistry or a related scientific discipline
• Solid understanding of chemical techniques and laboratory practices
• Ability to carry out more advanced processes (e.g. gas reactions, air‑sensitive work) with appropriate training and support
• Strong commitment to Health, Safety, and Environmental requirements
• Exceptional attention to detail, particularly with documentation and paperwork
• Good organisational and time‑management skills
• Strong interpersonal and communication skills

Advantageous Experience:

• Hands‑on experience with 50L‑scale or kilo‑scale processing
• Exposure to scale‑up, manufacturing, or pilot‑plant environments
• Experience working within SOP‑driven or regulated laboratory settings

Key Skills and Qualities

• Self‑motivated and proactive, with the ability to work independently
• Strong problem‑solving skills and an eye for identifying potential issues
• Flexible and willing to support additional hours when operationally required
• A collaborative team player who is reliable, resourceful, and supportive
• Positive and enthusiastic, with a genuine desire to contribute to team success

What We Offer