At GSK, we have bold ambitions for patients, aiming to positively impact the health of 2.5 billion people by the end of the decade. Our R&D; focuses on discovering and delivering vaccines and medicines, combining our understanding of the immune system with cutting‑edge technology to transform people’s lives. GSK fosters a culture ambitious for patients, accountable for impact, and committed to doing the right thing, making sure that we focus our efforts on accelerating significant assets that meet patients’ needs and have the highest probability of success. We’re uniting science, technology, and talent to get ahead of disease together.
Find out more: Our approach to R&D;
Position Summary The Principal Medical Writer is a seasoned expert who owns complex safety writing deliverables end-to-end. In this role, they independently lead the authoring of high-impact safety documents—such as aggregate reports and Risk Management Plans (RMPs)—translating complex safety data and analyses into clear, compelling outputs. They are accountable for driving timelines, managing stakeholders, and ensuring the quality of safety deliverables that address important safety issues. Beyond day-to-day delivery, this role is a key champion for continuous improvement, best practices, and the smart adoption of new tools and technologies in the safety writing space.
Responsibilities Independently lead preparation of complex clinical and post‑market safety documents (e.g., DSURs, PSURs/PBRERs, ACOs, PADERs/PAERs, RMPs, and responses to regulatory authority questions), with strong hands‑on experience across all key aggregate safety documents.
Operate effectively within a global, complex matrix organization, working autonomously and confidently influencing stakeholders on process discipline, quality standards, and “how” work should be done.
Lead cross‑functional teams to develop content strategy, coordinate contributions, manage review schedules and timelines, and ensure high‑quality, fit‑for‑purpose documents that accurately reflect safety, clinical, and statistical data and meet GSK and global/regional/local regulatory requirements.
Provide oversight to co‑authors, vendor writers, and teams of writers—serving as a mentor/buddy, ensuring the quality of contributions, and leading initiatives to improve medical writing processes, including effective use of authoring/review tools and other automation/AI‑enabled technology platforms.
Why You? This role is hybrid. You will work on‑site in Canada part of the week and remotely the remainder. Exact on‑site days will be agreed with your manager.
Basic Qualifications Bachelor’s degree in life sciences, health sciences, pharmacy, nursing or a related field.
Minimum 5 years of advanced medical/regulatory safety writing experience in pharmaceutical, biotech or clinical research settings, including summarization and interpretation of complex data and independent preparation of complex clinical and safety documents for regulatory use.
Advanced understanding of, and ability to apply, statistical, regulatory and medical communication concepts needed to independently write complex safety documents.
In‑depth working knowledge of relevant regulatory guidance (e.g., ICH, GVP, FDA, EMA)



pertaining to clinical trial conduct, pharmacovigilance, and document‑specific requirements, as well as Good Clinical Practice (GCP).
Strong understanding of core cross‑functional clinical research roles and procedures (e.g., safety, regulatory, clinical, epidemiology, statistics and programming) and how they relate to document strategy and operational preparation.
Experience across multiple therapeutic areas, with confidence to quickly dive into recent areas without extensive lead time.
Proven ability to manage multiple projects and deadlines in a fast‑paced, global/matrix environment, working autonomously while effectively influencing stakeholders.
Strong written and verbal English communication skills and excellent attention to detail.
Preferred Qualifications Advanced degree (PhD, PharmD, MSc, MPH) or equivalent scientific training.
Advanced safety writing skills with expertise across most key safety document types and experience leading regulatory submission projects or preparing dossier modules.
Comfort interpreting statistical outputs and collaborating with statisticians on tables and data displays.
Highly collaborative and capable of leading cross‑functional, multicultural, and hybrid/distributed teams across regions—negotiating solutions, advising on document structure and content, and working effectively with diverse stakeholders (e.g., health authorities, external partners, contractors/CROs, and patients).
Experience working with external partners, contractors or clinical research organizations, including vendor oversight and coordination.
Prior mentoring, training or people development experience, supporting the growth of less experienced writers and team members.
Able to independently lead multiple projects simultaneously and deliver multiple high‑quality documents on schedule.
Advanced computer skills and general computer literacy, including comfort with collaboration tools and remote‑working technologies.
Excellent English language proficiency, both verbal and written.
What you will gain You will join a team focused on patient impact and continuous learning. You will develop technical and strategic skills in regulatory writing, submission planning and cross‑functional collaboration. Your work will shape development programs and contribute to better outcomes for patients.
Skills Clinical Development
Clinical Trial Designs
Communication
Customer Service
Decision Making
Emotional Intelligence
Influencing Without Authority
Learning AgilityLiterature Reviews
Medical Writing
Pharmaceutical Industry
Presentation Techniques
Regulatory Submissions
Scientific Writing
Strategic Thinking
Salary & Benefits In compliance with Ontario's provincial pay transparency legislation, this job posting includes a salary range to support equitable and informed hiring practices.




The annual compensation for this role is CAD118,000 to CAD168,000 , determined based on experience, qualifications, and internal equity.
Salary ranges for other locations are shown because some markets have pay transparency laws that require salary information on job postings, and those locations are potential job sites for this role.
If salary ranges are not displayed in the job posting for a specific location or country, the relevant compensation will be discussed during the recruitment process.
Why GSK? Uniting science, technology and talent to get ahead of disease together. GSK is a global biopharma company with a purpose to unite science, technology and talent to get ahead of disease together. We aim to positively impact the health of 2.5 billion people by the end of the decade, as a successful, growing company where people can thrive. We get ahead of disease by preventing and treating it with innovation in specialty medicines and vaccines. We focus on four therapeutic areas: respiratory, immunology and inflammation; oncology; HIV; and infectious diseases – to impact health at scale. People and patients around the world count on the medicines and vaccines we make, so we’re committed to creating an environment where our people can thrive and focus on what matters most. Our culture of being ambitious for patients, accountable for impact and doing the right thing is the foundation for how, together, we deliver for patients, shareholders and our people.
GSK is an Equal Opportunity Employer. This ensures that all qualified applicants will receive equal consideration for employment without regard to race, color, religion, sex (including pregnancy, gender identity, and sexual orientation), parental status, national origin, age, disability, genetic information (including family medical history), military service or any basis prohibited under federal, state or local law.
GSK is committed to accommodating persons with disabilities. If you need accommodation at any stage of the application process or want more information on our accommodation policies, please contact us at [email protected].
Our Vision and Culture We are a global biopharma company with a special purpose – to unite science, technology and talent to get ahead of disease together – so we can positively impact the health of billions of people and deliver stronger, more sustainable shareholder returns – as an organisation where people can thrive. Getting ahead means preventing disease as well as treating it, and we aim to impact the health of 2.5 billion people around the world in the next 10 years. Our success absolutely depends on our people. While getting ahead of disease together is about our ambition for patients and shareholders, it’s also about making GSK a place where people can thrive. We want GSK to be a place where people feel inspired, encouraged and challenged to be the best they can be. A place where they can be themselves – feeling welcome, valued and included. Where they can keep growing and look after their wellbeing. So, if you share our ambition, join us at this exciting moment in our journey to get Ahead Together. Find out more on our career site.

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📌 Principal Medical Writer (Ontario)
🏢 GlaxoSmithKline
📍 Ontario