Director, Regulatory Affairs, CMC

Who We Are:

Xenon Pharmaceuticals (NASDAQ:

XENE) is a neuroscience‑focused biopharmaceutical company dedicated to drug discovery, clinical development, and commercialization of life‑changing therapeutics for patients in need. We are looking for great people who thrive in a respectful, collaborative, inclusive, and productive culture to join the Xenon team.

We are advancing an exciting product pipeline to address indications with high unmet medical need, including epilepsy and depression. Our Phase 3 azetukalner program represents the most advanced, clinically validated potassium channel modulator in late‑stage clinical development for multiple indications. Building upon the positive results and compelling data from our Phase 2b X‑TOLE study in adult patients with focal epilepsy, our Phase 3 epilepsy program includes multiple clinical trials evaluating azetukalner in patients with focal onset seizures and primary generalized tonic‑clonic seizures.

In November 2025, we announced the completion of patient enrollment in our Phase 3 X‑TOLE2 study, and topline data are anticipated in March 2026. We also have multiple Phase 3 azetukalner clinical trials in major depressive disorder (MDD) and bipolar depression (BPD) underway, based on topline data from our Phase 2 X‑NOVA clinical trial. In addition, we are proud of the leading‑edge science coming out of our discovery labs, including early‑stage research programs that leverage our extensive ion channel expertise and drug discovery capabilities to identify validated drug targets and develop new product candidates.

We have recently initiated Phase 1 studies for our follow‑on Kv7 channel opener, XEN
1120, and our lead Nav
1.7 development candidate, XEN
1701, in pain. Backed by a strong balance sheet to support our growth plans, we continue to build a fully integrated, premier neuroscience company with strong discovery, clinical development, corporate, and commercial operations.

We are seeking a Director, Regulatory, CMC to join our team.

This position reports to the Executive Director, Regulatory Affairs, CMC and will be based out of Boston, MA, USA in our Needham office. Hybrid positions require a minimum of two onsite days per week. On‑site positions require up to five on‑site days per week.

• Propose and implement global CMC regulatory strategies and provide regulatory guidance to cross‑functional teams and functional areas for assigned programs from the pre‑clinical stage through approval and life‑cycle management, with potential focus on late stage/commercial programs.
• Proactively and effectively communicate risks and potential mitigations to teams and key stakeholders in a timely manner.
• Assess and communicate regulatory requirements to ensure all CMC activities are in compliance with applicable regulations and guidelines.
• Manage and ensure compliance with all reporting requirements, including annual and periodic reports.
• Plan, manage, author, review, and obtain stakeholder alignment to facilitate the submission of high‑quality CMC sections of regulatory submissions to support initial INDs/CTAs, marketing applications, supplements and variations.
• Work closely with Technical Writers to ensure CMC sections of regulatory submissions are accurate and compliant.
• Lead multidisciplinary teams preparing responses to Regulatory Agency questions.
• Effectively plan, organize and contribute to formal meetings with global regulatory agencies to ensure alignment on CMC strategies, resolve CMC issues and oversee proactive interactions for initial INDs/CTAs, marketing registration applications, supplements and variations.
• Interact with key personnel in regulatory agencies to ensure the review and approval of development plans, the timely resolution of issues, and the approval of regulatory applications.
• Provide regulatory support for relevant quality systems such as change control, deviation t, and inspection management. Assess proposed manufacturing process changes and provide strategic regulatory guidance to enable global implementation.
• Develop, review, and maintain Regulatory CMC departmental policies and SOPs.
• Maintain up to date…