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Added 4 mins ago
PA
Senior Quality Control Manager
PL ASSOCIATES INC. (PLA)
WASHINGTON, DC
- $50 to $60 USD / hour
PLA is looking for the Senior Quality Control (QC) Manager is responsible for planning, implementing, and overseeing the Quality Control Program for the rehabilitation of underdrain…
Added 13 mins ago
Boiler & Refrigeration Operator Night Shift
McCain Foods
Washburn, ME
You’ll be part of the plant operations team responsible for maintaining the critical utility systems that keep production running safely and reliably. You’ll work closely with senior boiler…
Added 26 mins ago
M
Senior Performance Modeling Engineer
Microsoft
CA · WA · Mountain View, CA · Redmond, WA · Mountain View · Redmond
- $119,800 to $261,000 USD / year
We are seeking a Senior AI Performance Modeling Engineer to join the AI Systems Architecture (ASA) group within Microsoft SPARC, where we define and optimize next-generation AI accelerators…
Added 26 mins ago
M
Senior Mechanical Engineer, AI Systems
Microsoft
CA · Mountain View, CA · Mountain View
- $119,800 to $261,000 USD / year
The Senior Mechanical Engineer will contribute to the design and deployment of future high density, liquid-cooled systems in Azure datacenters.
Added 29 mins ago
Staff Software Engineer, Mobile (Android)
Google
Mountain View, CA
Experience in mobile systems engineering (e.g., mobile application software development, mobile release management, mobile operating systems, software/hardware integration (e.g.,…
Added 32 mins ago
M
Senior Software Engineer- AI Agents
Microsoft
WA · CA · NY · Redmond, WA · Mountain View, CA · Redmond · Mountain View · New York
- $119,800 to $261,000 USD / year
…managing and governing AI agents at scale. We are looking for a Senior Software Engineer who is passionate about building secure, reliable, and highly scalable distributed systems and…
Added 32 mins ago
Senior Engineer, Waste Treatment Design
Micron Idaho Semiconductor Manufacturing (Triton) LLC
Boise, ID
As a Waste Treatment Design Engineer, you will help shape the systems that safely manage industrial waste streams across major semiconductor construction projects. You will coordinate…
Added 32 mins ago
Senior Engineer, Specialty Gas Systems
Micron Idaho Semiconductor Manufacturing (Triton) LLC
Boise, ID
As a Senior Engineer, Specialty Gas Systems, you will lead the development and integration of high-purity and hazardous gas systems for advanced semiconductor manufacturing. You’ll guide…
Added 32 mins ago
Senior Engineer, Reclamation and ZLD
Micron Idaho Semiconductor Manufacturing (Triton) LLC
Boise, ID
As a Water Reclamation Engineer, you will lead the design and integration of systems that recover, reuse, and responsibly manage industrial water streams for major semiconductor…
Added 32 mins ago
Senior Engineer, Process Mechanical Engineer
Micron Idaho Semiconductor Manufacturing (Triton) LLC
Boise, ID
As a Process Mechanical Engineer, you will provide technical leadership and oversight of third-party process mechanical design for major construction projects. You will manage design…
Added 46 mins ago
Senior DevOps Engineer
Abbott
Pleasanton, CA
We are seeking a highly skilled and experienced Senior DevOps Engineer to design, implement, and optimize scalable DevOps solutions that support the build, release, and deployment of modern…
Added 46 mins ago
Engineer V
General Atomics
Poway, CA
General Atomics Aeronautical Systems, Inc. (GA-ASI), an affiliate of General Atomics, is a world leader in proven, reliable remotely piloted aircraft and tactical reconnaissance radars, as…
Added 46 mins ago
Senior Site Installation Engineer
Trinzic
El Segundo, CA
KBR is seeking a Senior Site Installation Engineer to join our team in El Segundo, CA.
Added 46 mins ago
Software Development Engineer, Creator Marketplace
Amazon
Culver City, CA
As a Software Development Engineer, it’s up to you to research, define, design and refine the tech that keeps us one step ahead of listeners. Anticipate. Innovate. Bring challenging ideas…
Added 46 mins ago
Senior Staff Software Engineer, Platforms Security
Google
Sunnyvale, CA
Share Senior Staff Software Engineer, Platforms Security
Added 46 mins ago
Senior RTL Design Engineer, TPU
Google
Sunnyvale, CA
…on TPU architecture and its integration within AI/ML-driven…
Added 46 mins ago
Senior Software Engineer, Google Distributed Cloud Hosted, Infrastructure
Google
Sunnyvale, CA
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Added 46 mins ago
Research Scientist Intern, ML Innovation for Products (PhD)
Meta
Sunnyvale, CA · Menlo Park, CA
…that powers retrieval, ranking, and auction across Meta's ads systems. This is a very unique team that functions like an applied research lab with a production deploy button: we imagine,…
Added 46 mins ago
Electrical Failure Analysis Engineer
Eurofins US Network
Sunnyvale, CA
Eurofins EAG Laboratories is seeking a Senior Engineer to lead hands-on investigations of electronic components, packages, and systems. You will work directly in the lab owning electrical…
Added 46 mins ago
Software Engineer, Infrastructure - Ads Infra and Ranking
Meta
Sunnyvale, CA
Software Engineer, Infrastructure - Ads Infra and Ranking Responsibilities:
Added 47 mins ago
Sr Systems Engineer L3 - INTL INDIA
Insight Global
San Francisco, CA
Insight Global’s client is seeking an experienced Level 3 Systems Engineer to support a diverse managed services environment. This person will work across client environments that include…
Added 47 mins ago
Sr Principal Network Engineer
Northrop Grumman
San Diego, CA
At Northrop Grumman, our employees have incredible opportunities to work on revolutionary systems that impact people's lives around the world today, and for generations to come. Our…
Added 47 mins ago
Principal / Sr Principal Engineer - Product Support (DMSMS)
Northrop Grumman
San Diego, CA · Palmdale, CA
Northrop Grumman Aerospace Systems has an opening for a Principal or Sr Principal Engineer DMSMS (Diminishing Manufacturing Sources or Material Shortages), to join our team of qualified,…
Added 47 mins ago
Engineer VII
General Atomics
San Diego, CA
We have an exciting opportunity for a Senior Electrical Engineer (EE) to join our Electrical Technologies directorate located in Rancho Bernardo. We are looking for someone with drive,…
Added 47 mins ago
Senior Principal Digital Engineer
Northrop Grumman
Los Angeles, CA
The Digital Engineer will be responsible for design and verification of digital systems on a safety-critical development program. Candidate is required to have extensive knowledge of…

Closed listing

Pfizer

Sr Scientist

Bothell, WA, United States

$93,600 to $156,000 USD / year

This opening has closed.

The original listing is kept below for reference.

Find open jobs More jobs with this employer

About employer

Job details

Pay: $93,600 to $156,000 USD / year
Posting language: English
Posted: Nov 7, 2026

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Original job description

Archived listing. The details below describe a past opening.

Use Your Power for Purpose

At Pfizer, our purpose is to deliver breakthroughs that change patients' lives. Central to this mission is our Research and Development team, which strives to translate advanced science and cutting-edge technologies into impactful therapies and vaccines. Whether you are involved in discovery sciences, ensuring drug safety and efficacy, or supporting clinical trials, your role is crucial. You will leverage innovative design and process development capabilities to accelerate the delivery of best-in-class medicines to patients globally.

What You Will Achiev e

We are seeking a highly motivated chemical engineer for the role of Senior Scientist-Chemical Engineer to join our DL Process Development team within Chemical Process and Analytical Development (CPAD) in Bothell, WA. You will join a diverse team responsible for developing Drug Linker (DL) processes for use at manufacturing plants across Pfizer's network. Chemical engineering principles contribute to the successful development, optimization and scale up of DL manufacturing processes. You will design and perform engineering-related laboratory experiments, integrating process modeling, statistics, and solid-state analysis. Strong communication, high technical aptitude, and creativity to foster original ideas are required for success in this position.

CPAD, as part of Pfizer R&D in Pharmaceutical Sciences, is responsible for the development of process technology to manufacture DL for Antibody Drug Conjugate. CPAD scientists engage in all facets of development from small-scale synthesis in support of medicinal chemistry programs, to the development and optimization of the commercial DL manufacturing process. In collaboration with chemists and analysts, you will lead the engineering activities during process development, process scale up, and technology transfer to our clinical and commercial manufacturing sites and external facilities. Given the dynamic team environment and fast-paced project timelines, strong interpersonal and communication skills are essential. This laboratory-based position offers the opportunity for cross-training and developing new technologies.

How You Will Achieve

In this role, you will:

Applies technical and functional engineering knowledge to develop safe, sustainable, robust, scalable, cost-efficient and phase-appropriate process that are aligned with internal business needs.
Prepare internal research reports and technical presentations summarizing process development activities to capture process knowledge and transfer process understanding to Pfizer's manufacturing partners.
Lead and/or support purification and isolation process development for internal pre-clinical materials supply.
Design, implement, and interpret data rich experiments independently.
Design experiments to assess scalability of manufacturing processes to ensure successful tech transfer.
Understand unit operation design, process modeling and optimization, process equipment selection, and scale-up methodologies.
Utilize various process modeling approaches to ensure robust tech transfer to pilot and commercial scale facilities.
Assist technology transfer of processes to internal or external clinical and commercial manufacturing sites and external partners. May spend time at tech transfer site supporting manufacturing activities.
Collaborate with process chemists and analytical chemists on synthetic strategy and route development.
Develop and implement new technologies for process improvement at external manufacturing partners
Maintains suitable knowledge on lab data management systems and applies suitable modeling tools to gain process knowledge from data rich experiments
Remain current with the process engineering and chemistry literature. May collaborate on and author external publications and present research at external conferences.
Build a safe, inclusive, and innovative culture within the engineering and chemistry labs.
Work collaboratively and effectively, building and leading high performing teams
Ensure accurate and timely documentation of experimental work, and clear and concise presentation of work to stakeholders both internally and externally.
Look for opportunities to align, share and implement best practices across sites.

Qualifications

Must-Have

Applicant must have a bachelor's degree with at least 9+ years of experience; OR a master's degree with more than 7+ years of experience; OR PhD with 0+ years of relevant experience.
Candidates with additional years of work experience will be considered for an appropriate level for their background
Expertise in reaction engineering, including experience developing and validating kinetic models from experimental data
Excellent knowledge of chemistry and chemical engineering principles and sound understanding of chemical reactor design, thermodynamics, transport phenomena, engineering statistics, and process modeling
Outstanding laboratory skills, attention to detail, and ability to solve technical problems
Exceptional interpersonal, multi-disciplinary team collaboration, and communication skills

Nice-to-Have

Experience with technical transfer of processes into external manufacturing partners
Experience using Process Analytical Technologies (PAT) such as Raman, FTIR, NIR, on-line HPLC, and FBRM
Experience with separation processes such as Tangential Flow Filtration (TFF), membrane separation, chromatography purification, or Supercritical Fluid Precipitation/Extraction
A good foundational understanding of organic chemistry
Experience building reaction or unit operation models with software such as DynoChem®, Reaction LabTM, ASPEN, gPROMS, VisiMix,, COSMOtherm, and MatLab
Knowledge and experience applying Design of Experiments
Strong organization, time management, and problem-solving skills
A team player with good communication skills, desire to achieve team and individual goals
Strong technical writing and presentation skills
Working knowledge of analytical techniques such as HPLC/UPLC, MS, PXRD, DSC, TGA, and NMR
Applied data science methods, such as machine learning and AI

NON-STANDARD WORK SCHEDULE, TRAVEL OR ENVIRONMENT REQUIREMENTS

Due to the need to support global operations, the employee may be required to attend teleconference meetings that are outside of core work hours in Pacific Time.
Local business travel to support vendor oversight activities < 10%. of work time.

Relocation support available

Work Location Assignment: On Premise

The annual base salary for this position ranges from $93,600.00 to $156,000.00. In addition, this position is eligible for participation in Pfizer's Global Performance Plan with a bonus target of 12.5% of the base salary and eligibility to participate in our share based long term incentive program. We offer comprehensive and generous benefits and programs to help our colleagues lead healthy lives and to support each of life's moments. Benefits offered include a 401(k) plan with Pfizer Matching Contributions and an additional Pfizer Retirement Savings Contribution, paid vacation, holiday and personal days, paid caregiver/parental and medical leave, and health benefits to include medical, prescription drug, dental and vision coverage. Learn more at Pfizer Candidate Site - U.S. Benefits | (uscandidates.mypfizerbenefits.com). Pfizer compensation structures and benefit packages are aligned based on the location of hire. The United States salary range provided does not apply to Tampa, FL or any location outside of the United States.

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 disabilityrecruitment@pfizer.com. 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

About employer

More about this job

Skills

Clinical trials
Chemical engineering
Statistics
Research
Presentation skills
Manage quantitative data
Manufacturing processes
Process improvement
Data management
Process engineering
Documentation
Attention to detail
Solve technical problems
Collaboration
Communication skills
Organic chemistry
ASPEN
Time management
Problem solving
Technical writing
Machine learning

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