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Senior/ Principal Medical Writer

X4 Life Sciences

London Area, United Kingdom
Full-time
Pharma & Biotech
Posted 1 Oct 2026

Job Description

Senior/ Principal Medical Writer - Medical Communications

Hybrid, London (2 days a week in the office)

This is a great opportunity to join a growing London team, working on high-profile accounts with leading pharmaceutical and biotech clients, with clear progression for experienced writers.

The Opportunity

A well-established, award-winning healthcare communications agency is growing its scientific team in London following new account wins and continued client growth.

The role suits an experienced Medical Writer who enjoys a varied mix of work. You'll cover promotional, medical education and congress activity across a range of therapy areas. The level is flexible, so the role will be shaped around your experience, whether you're an established Senior Writer or already working at Principal level. You'll join a supportive, collaborative team with a genuine focus on development.

The Role

As part of the scientific team, you will:

  • Write and develop high-quality content across a range of deliverables, including promotional materials, medical education, congress activity and HCP-facing content.
  • Work across a variety of therapy areas, with a focus on rare disease and neurology.
  • Support UK and global clients, including US-based accounts.
  • Provide scientific input into content plans and client programmes, with greater strategic ownership at a more senior level.
  • Review and quality check content, maintaining a high standard of scientific accuracy and compliance.
  • Mentor and support more junior writers within the team.
  • Build strong relationships with clients, contributing to and leading scientific discussions.
  • Work closely with account teams and senior leadership to deliver projects on time and to a high standard.

About You

You'll ideally have:

  • A degree in Life Sciences, Pharmacy, Medicine or another relevant scientific discipline (MSc or PhD desirable).
  • Significant medical writing experience within a medical communications or healthcare advertising agency, at Senior level or above.
  • Promotional medical writing experience, ideally alongside medical education or congress work.
  • Experience across a range of therapy areas
  • A good working knowledge of industry codes and compliance (e.g. ABPI).
  • Confidence working with clients and managing review cycles.
  • Excellent attention to detail and the ability to manage multiple projects at once.

If you're looking for your next step and the chance to work on some exciting accounts in London, please apply below or pop me an email - m.kent@x4lifesciences.com.

Please note, candidates must be UK-based and have the existing right to work in the UK, as sponsorship is not available for this position. The role requires 2 days a week in the London office, so the successful candidate will need to be within commutable distance.

Interested in this role?

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