Refeyn is the world's pioneer in mass photometry – a ground-breaking technology that weighs individual molecules and particles with light. It transforms our ability to characterise the composition, structure and dynamics of biomolecules and biomolecular complexes, nanostructures, and viral capsids.

Since being spun out of the University of Oxford in 2018, Refeyn has been developing mass photometry instruments and delivering them to customers around the world – at leading academic institutions and in biopharma. We are continuously pushing the boundaries of what mass photometry can achieve.

With headquarters in Oxford, UK as well as offices in the US, we are a growing, global company with a team of over 180 employees (and growing). In addition to achieving market success, Refeyn has attracted a high level of investment – we raised $70m in our Series B funding round in March 2022.

At Refeyn, we are fiercely proud of our talented workforce, whose creativity, tenacity and skills have enabled us to evolve into a successful, well-funded and rapidly growing company in just a few years. To achieve our ambitions – to transform analytical workflows in the life sciences, biopharma and beyond with mass photometry – we are continuing to expand our workforce.

We strive to be an outstanding place to work – by maintaining a positive and inclusive culture, offering competitive salaries and benefits, encouraging ongoing training and development, plus, of course, plenty of other perks.

Job Overview

Acting as a first point of contact for employees as a HSE Officer, in this role you will  ensures Refeyn’s compliance to health, safety and environmental laws in the workplace, creating a safe work environment and promoting a safe and sustainable culture of the business across all global locations. The role works closely with external stakeholders such as Local and Governmental Authorities in each of Refeyn’s sites, to ensure our arrangements are suitable.

This role is based at our UK office on the outskirts of Oxford.


  • Developing and implementing health and safety policy and plans.
  • Monitor existing and implement new policies to ensure effective compliance with guidelines and legislation in relation to HSE.
  • Conduct H&S induction for new joiners globally and any relevant training.
  • Communicate guidelines, goals, progress, and achievements to employees.
  • Respond to H&S emergencies, incidents accidents; record, investigate causes and recommend corrective actions Creating and maintaining up-to-date risk assessments, processes, and procedures to mitigate any occupational hazards.
  • Ensuring emergency procedures are in place, and tests and drills are performed as required.
  • Ensuring relevant staff training is in place where required, including maintaining a training register and identifying new training needs and renewals.
  • Monitor the performance and drive improvements related to our environmental and sustainability impact.
  • Hazard identification and control, including but not limited to:
    • Fire & Life Safety
    • Accident & Injury prevention
    • Emergency Preparedness
    • Ergonomics
    • Industrial Hygiene
  • Other duties as reasonably requested by the business

Candidate Requirements


  • NEBOSH General Certificate
  • University Degree or equivalent work experience


  • Management of HSE function within UK manufacturing, engineering or scientific laboratory services business. Desirable to have worked across EU, USA and APAC regions.
  • Leading Health & Safety and Environmental initiatives with ability to influence stakeholders across all areas of a business.
  • Issue-resolution and problem-solving skills with ability to identify and communicate with the relevant internal and external stakeholders.
  • Creation, management and implementation of documentation, processes and procedures with adherence to applicable national standards.
  • Knowledge of HSE regulations across global territories (e.g. US, EU, JP)
  • UK Health, Safety and Environmental standards, bodies and regulations (PUWER, RIDDOR, LOLER etc.)
  • Creation and implementation of COSHH risk assessments


  • 25 days annual leave, excess-free private health insurance, critical illness cover and income protection, up to 7% employer pension contribution, salary sacrifice nursery scheme, enhanced maternity, paternity and shared parental leave, charitable giving, development opportunities, wellbeing resources, plus on-site snacks!


Refeyn is committed to being an equal opportunities employer. We are working hard to create a safe and empowering environment for all, and firmly believe that there is great strength in building teams with different voices, experiences, perspectives and backgrounds. We welcome applicants from all sections of society to join us on our mission to transform analytical workflows using the power of light. 



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