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A leading biopharmaceutical solutions organization located in Toronto is seeking a Senior Principal Medical Writer to develop and manage regulatory documents for submissions to authorities globally. This role requires strong project management skills, the ability to mentor junior writers, and collaboration across teams to ensure quality and compliance. Candidates should have experience with regulatory standards and a relevant educational background, with competitive salary ranging from $114,000 to $210,900 based on qualifications and experience.
Updated: October 2, 2025
Location: Toronto, ON, Canada
Senior Principal Medical Writer - Regulatory - Oncology - Single Sponsor
Syneos Health® is a leading fully integrated biopharmaceutical solutions organization built to accelerate customer success. We translate unique clinical, medical affairs and commercial insights into outcomes to address modern market realities.
Our Clinical Development model brings the customer and the patient to the center of everything that we do. We are continuously looking for ways to simplify and streamline our work to not only make Syneos Health easier to work with, but to make us easier to work for.
Whether you join us in a Functional Service Provider partnership or a Full-Service environment, you’ll collaborate with passionate problem solvers, innovating as a team to help our customers achieve their goals. We are agile and driven to accelerate the delivery of therapies, because we are passionate to change lives.
Discover what our 29,000 employees, across 110 countries already know:
$114,000.00 – $210,900.00
The base salary range represents the anticipated low and high of the Syneos Health range for this position. Actual salary will vary based on various factors such as the candidate’s qualifications, skills, competencies, and proficiency for the role.
Over the past 5 years, we have worked with 94% of all Novel FDA Approved Drugs, 95% of EMA‑Authorized Products and over 200 Studies across 73,000 Sites and 675,000+ trial patients.
No matter what your role is, you’ll take the initiative and challenge the status quo with us in a highly competitive and ever‑changing environment. Learn more about Syneos Health.
Tasks, duties, and responsibilities as listed in this job description are not exhaustive. The Company, at its sole discretion and with no prior notice, may assign other tasks, duties, and job responsibilities. Equivalent experience, skills, and/or education will also be considered so qualifications of incumbents may differ from those listed in the Job Description. The Company, at its sole discretion, will determine what constitutes as equivalent to the qualifications described above. Further, nothing contained herein should be construed to create an employment contract. Occasionally, required skills/experiences for jobs are expressed in brief terms. Any language contained herein is intended to fully comply with all obligations imposed by the legislation of each country in which it operates, including the implementation of the EU Equality Directive, in relation to the recruitment and employment of its employees. The Company is committed to compliance with the Americans with Disabilities Act, including the provision of reasonable accommodations, when appropriate, to assist employees or applicants to perform the essential functions of the job.
The Associate Director, Principal Medical Writer I is responsible for the development of clinical documents for submissions to regulatory authorities globally. Provides strategic direction to cross‑functional project teams with minimal oversight to ensure that clinical documents (eg, Investigators' Brochures [IBs], Clinical Study Reports [CSRs], and marketing authorization submission documents) accurately and consistently present key data‑driven clinical messages in accordance with program goals and regulatory requirements. Writes or provides direction and leadership to other writers to ensure the timely delivery of high‑quality documents that are scientifically rigorous, logically organized, and have accurate data presentation and interpretation. Oversees the medical writing activities of multiple compounds and serves as lead writer for individual summary documents. Has a broad understanding of clinical research processes and global regulatory document standards. Mentors less experienced writers. Reports to a Director of Medical Writing or above.