Pfizer's purpose is to deliver breakthroughs that change patients' lives. Chemical Research and Development is at the heart of fulfilling Pfizer's purpose as we work to translate advanced science and technologies into the therapies that matter most. Chemists at Pfizer apply cutting edge scientific tools to accelerate access to the best medicines to patients around the world.
ROLE SUMMARY:
The Chemical Process and Analytical Development (CPAD) department at our Bothell, Washington site is seeking a Senior Scientist to discover and develop robust and innovative synthetic routes to novel Drug-Linkers to drive the next generation of targeted cancer therapy. As a Senior Scientist, you will be at the center of our operations and find that everything we do is in line with an unwavering commitment to quality. You will be part of a group that is comprised of experts in Process Chemistry, Chemical Engineering and Analytical Chemistry who work together to develop robust processes towards ADC Drug-Linkers and small molecule intermediates. You will play a vital role as a key contributor in multi-disciplinary matrix teams from molecule nomination through the development of commercial manufacturing processes. You will provide key contributions to the implementation of process chemistry strategies through the development and execution of innovative synthetic chemistry. With your deep knowledge of Organic Chemistry, you will use your scientific judgment to adapt methods and techniques to make decisions that influence projects. You will be recognized as a technical expert and a key scientific contributor.
ROLE RESPONSIBILITIES:
- Independently design and execute well-planned laboratory experiments that require complex data analysis.
- Maintain high standards for all laboratory records, reports, patents, regulatory documents, and external communications.
- Employ state-of-the art technologies including high-throughput experimentation, data-rich experimentation, computational tools, and predictive software to accelerate process development.
- Persuasively communicate abstract concepts, ideas, and solutions to technical teams and chemistry leadership.
- Develop safe, scalable routes and processes on tight timelines aligned with Pfizer's portfolio goals.
- Author and review manuscripts, technical documents, patents, production reports and technology transfer reports.
- Promote a supportive and inclusive work environment.
- Follow all Pfizer safety training and laboratory research guidelines to achieve compliance with all regulations.
BASIC QUALIFICATIONS:
- PhD in Organic Chemistry with 0+ years of industrial experience or a Bachelors degree and 9+ years of experience or a Master's degree and 7+ years of experience.
- A sound understanding of modern synthetic organic chemistry principles and purification technologies.
- Proven track record of scientific innovation and impact, demonstrated through authorship of peer-reviewed publications, patents, or presentations at recognized scientific conferences.
- Excellent written and oral communication skills.
Additional Job Details:
- Work Location Assignment: On Premise
- Last date to apply is July 14, 2026
Relocation assistance may be available based on business needs and/or eligibility.
Candidates must be authorized to be employed in the U.S. by any employer.
U.S. work visa sponsorship (such as TN, O-1, H-1B, etc.) is not available for this role now or in the future.
Sunshine Act
Pfizer reports payments and other transfers of value to health care providers as required by federal and state transparency laws and implementing regulations. These laws and regulations require Pfizer to provide government agencies with information such as a health care provider's name, address and the type of payments or other value received, generally for public disclosure. Subject to further legal review and statutory or regulatory clarification, which Pfizer intends to pursue, reimbursement of recruiting expenses for licensed physicians may constitute a reportable transfer of value under the federal transparency law commonly known as the Sunshine Act. Therefore, if you are a licensed physician who incurs recruiting expenses as a result of interviewing with Pfizer that we pay or reimburse, your name, address and the amount of payments made currently will be reported to the government. If you have questions regarding this matter, please do not hesitate to contact your Talent Acquisition representative.
EEO & Employment Eligibility
Pfizer is committed to equal opportunity in the terms and conditions of employment for all employees and job applicants without regard to race, color, religion, sex, sexual orientation, age, gender identity or gender expression, national origin, disability or veteran status. Pfizer also complies with all applicable national, state and local laws governing nondiscrimination in employment as well as work authorization and employment eligibility verification requirements of the Immigration and Nationality Act and IRCA. Pfizer is an E-Verify employer. This position requires permanent work authorization in the United States.
Pfizer endeavors to make www.pfizer.com/careers accessible to all users. If you would like to contact us regarding the accessibility of our website or need assistance completing the application process and/or interviewing, please email [email protected] . This is to be used solely for accommodation requests with respect to the accessibility of our website, online application process and/or interviewing. Requests for any other reason will not be returned.
To learn more about acceptable and prohibited uses of AI during the recruitment process, please review our candidate AI-use guidelines available on Pfizer Careers .
Research and Development
Skills Required
- PhD in Organic Chemistry with 0+ years industry experience OR Bachelor's degree with 9+ years experience OR Master's degree with 7+ years experience
- Sound understanding of modern synthetic organic chemistry principles and purification technologies
- Proven track record of scientific innovation evidenced by peer-reviewed publications, patents, or conference presentations
- Excellent written and oral communication skills
- Experience using high-throughput experimentation, data-rich experimentation, computational tools, or predictive software to accelerate process development
- Permanent work authorization in the United States (U.S. work visa sponsorship is not available)
Pfizer Compensation & Benefits Highlights
-
Healthcare Strength — Multiple U.S. medical plan options include telehealth, comprehensive mental‑health support, fertility/family‑building benefits, transgender‑inclusive coverage, and certain Pfizer medications at no cost. A Wellbeing Wallet and wellness resources broaden the health and wellbeing offering.
-
Retirement Support — A 401(k) with company matching is paired with an additional Pfizer Retirement Savings Contribution, alongside company‑paid life and disability insurance. One‑on‑one financial planning support is provided through Fidelity.
-
Leave & Time Off Breadth — Paid time off spans vacation, holidays, and personal days, with additional caregiver and medical leave. U.S. parental leave commonly includes 12 weeks paid with options for additional unpaid bonding time and a return‑to‑work transition.
Pfizer Insights
What We Do
Our purpose ensures that patients remain at the center of all we do. We live our purpose by sourcing the best science in the world; partnering with others in the healthcare system to improve access to our medicines; using digital technologies to enhance our drug discovery and development, as well as patient outcomes; and leading the conversation to advocate for pro-innovation/pro-patient policies.
Why Work With Us
We are the inventors, the problem solvers, the big thinkers — those who surmount any hurdle to deliver breakthrough medicines to the people who are counting on them the most.
Gallery
Pfizer Offices
Hybrid Workspace
Employees engage in a combination of remote and on-site work.









