Senior Medical Writer (Oncology) - Medical Communications

At Obsidian, we're passionate about transforming scientific communications to improve healthcare outcomes for everyone. As a specialist healthcare agency dedicated to medical and scientific communications, we partner with global healthcare organisations to share knowledge that truly makes a difference.

Our team of more than 65 academic scientists, strategists, and communications experts delivers cutting-edge solutions across:

• Medical Affairs
• Strategic Consultancy
• Scientific Meetings and Events
• Medical Education
• Publications Planning & Delivery
• Creative & Digital Services

The Opportunity

Following an exciting period of growth, we're looking for a Senior Medical Writer , or someone ready to step into an Associate Principal Medical Writer position, to join one of our thriving business units.

This is a pivotal role, offering the opportunity to lead key workstreams across a diverse and high-profile portfolio. The position will primarily support a large global oncology account spanning multiple indications, while also leading a broad range of UK-based projects. In addition, you may also contribute to a second account focused on specialist therapy areas, including a pre-launch nephrology programme.

This is a fantastic opportunity to make a real impact, combining your scientific expertise with strategic thinking and creative communication skills. In this role, you'll:

• Join a 12-strong editorial team working alongside experienced client services professionals.
• Lead scientific content development across workstreams within a large global oncology account and a diverse portfolio of UK projects, covering scientific exchange meetings, stakeholder mapping and HCP educational digital platforms.
• Build strong client relationships and become a trusted scientific partner.
• Support and mentor junior writers while contributing to a collaborative and ambitious business unit of 25 professionals.

What You'll Do

• Lead the development of high-quality scientific and medical communications across a diverse range of deliverables, including slide decks, congress materials, websites, and other educational resources.
• Act as the editorial lead on key projects, taking ownership of delivery from briefing through to completion.
• Review work of junior team members, ensuring highest editorial standards are met.
• Contribute to development of accurate project timelines and editorial budgets
• Apply scientific insight and strategic thinking to create content that aligns with client objectives and delivers impact.
• Build trusted relationships with clients and scientific experts, leading discussions and presenting content with confidence.
• Mentor and support junior writers, helping to develop editorial excellence across the team.
• Contribute ideas that drive innovation, continuous improvement and growth across client accounts.

What We're Looking For

• Degree-qualified in a life sciences discipline (BSc, MSc, PhD or equivalent).
• Previous medical communications agency experience, ideally at Senior Medical Writer level.
• A proven track record of developing high-quality scientific content across a range of deliverables.
• Strong client-facing and communication skills.
• Experience mentoring or coaching junior writers.
• Excellent attention to detail, organisational skills and scientific acumen.

What We Offer

• Flexible and hybrid working environment, with opportunities to collaborate from our London office.
• 25 days’ holiday + bank holidays, plus gifted days at Christmas and your birthday off
• AXA private healthcare (with family options), Aviva pension scheme, income protection, life assurance
• Enhanced parental leave, cycle-to-work scheme, season ticket loan
• Bonus schemes and employee referral rewards
• Learning and Development: Comprehensive training programmes, annual performance reviews, and opportunities to join working groups
• Well-being Support: EAP, mental health first-aiders, AXA well-being calendar, and a dedicated well-being room
• Social Connection: Regular social events and a friendly, collaborative culture

Ready to lead, inspire, and make an impact?

Join us at Obsidian and help shape the future of scientific communications.

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