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Associate Downstream Process Development Scientist Jobs in New York

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Associate Downstream Process Development Scientist information

What is an associate downstream process development scientist?

An Associate Downstream Process Development Scientist is a professional who works in the biotechnology or pharmaceutical industry, focusing on developing and optimizing processes that purify biological products, such as proteins or antibodies, after they have been produced by cells. Their work is crucial for ensuring the final product meets quality and safety standards before it is used in research or clinical applications. They typically perform laboratory experiments, analyze data, and collaborate with other scientists and engineers to improve yield and efficiency. This role is often entry-level or early-career, providing hands-on experience in process development and technical troubleshooting.

What are the key skills and qualifications needed to thrive as an associate downstream process development scientist, and why are they important?

To excel as an Associate Downstream Process Development Scientist, you need a solid understanding of biochemistry, chemical engineering, and downstream purification techniques, often supported by a bachelor's or master's degree in a life science or engineering discipline. Familiarity with chromatographic systems (such as AKTA), filtration equipment, and analytical tools, as well as knowledge of GMP/GLP regulations, is typically required. Strong problem-solving, attention to detail, and effective teamwork and communication skills help you navigate complex experiments and collaborate with cross-functional teams. These skills ensure efficient process optimization, compliance with regulatory standards, and successful development of biopharmaceutical products.

What is the difference between Associate Downstream Process Development Scientist vs Associate Upstream Process Development Scientist?

AspectAssociate Downstream Process Development ScientistAssociate Upstream Process Development Scientist
Primary FocusPurification and recovery of bioproductsCell culture and fermentation processes
Required SkillsProtein purification, chromatography, filtrationCell culture, bioreactor operation, media preparation
Work EnvironmentLaboratories, manufacturing facilitiesLaboratories, bioreactor labs
Common CertificationsBiotech or bioprocessing certificationsBiotech or bioprocessing certifications

Both roles are essential in biopharmaceutical development, focusing on different stages of the production process. The Associate Downstream Process Development Scientist specializes in purification techniques, while the Associate Upstream Process Development Scientist concentrates on cell growth and fermentation. Understanding these distinctions helps candidates target their skills and career paths effectively.

What are some typical challenges faced by an associate downstream process development scientist, and how can they be addressed?

Associate Downstream Process Development Scientists often encounter challenges such as optimizing purification processes, troubleshooting equipment performance, and ensuring batch-to-batch consistency. These challenges can be addressed by maintaining meticulous documentation, collaborating closely with upstream and analytical teams, and staying current with best practices in chromatography and filtration. Proactively seeking feedback from experienced colleagues and participating in cross-functional meetings can also help in identifying solutions and improving process efficiency.
What are the most commonly searched types of Downstream Process Development Scientist jobs in New York? The most popular types of Downstream Process Development Scientist jobs in New York are:
What cities in New York are hiring for Associate Downstream Process Development Scientist jobs? Cities in New York with the most Associate Downstream Process Development Scientist job openings:
Infographic showing various Associate Downstream Process Development Scientist job openings in New York as of August 2026, with employment types broken down into 100% Full Time. Highlights an 100% In-person job distribution.

Associate Principal Scientist, Upstream Process Development

Merck & Co., Inc.

Rahway, NJ • On-site

Full-time

Medical, Dental, Vision, Retirement, PTO

Posted 5 days ago


Merck rating

8.0

Company rating: 8.0 out of 10

Based on 51 frontline employees who took The Breakroom Quiz

43rd of 86 rated pharmaceutical


Job description

Job Description
The Biologics Process Research & Development organization within our Research & Development Division is responsible for developing the drug substance manufacturing processes for our Company's biologics pipeline. We work closely with colleagues in Discovery, Pre-clinical and Early Development to rapidly develop manufacturing processes for diverse biotherapeutics and efficiently manufacture material to supply clinical trials. We are also responsible for late-stage process development and process characterization to prepare for commercial manufacturing. We work with our partners in our Company Manufacturing Division to commercialize and launch new products.
We are seeking a highly motivated and energetic individual to join our team as an Associate Principal Scientist. In this role, a successful candidate will work closely with a highly motivated team of Scientists and Engineers in the Upstream Process Development area and contribute to CMC development of our company's pipeline, playing an active role in the design, development, and optimization of cell culture processes and the transfer of processes to clinical and commercial manufacturing sites. They must have effective organizational and multi-tasking skills, demonstrated excellent scientific leadership in Upstream process development, and superior written and oral communications abilities. Evidence of strong cross-functional collaboration, significant external presence with scientific excellence, and interest and abilities for mentoring junior staff are also expected.
Responsibilities include, but are not limited to:
    • Participates in and/or leads upstream process development of first-in-human and commercial processes by efficiently developing high yield, robust, and scalable cell culture processes.
    • Responsible for process development, process characterization, and regulatory filing activities to ensure a smooth and clear path to successful PPQs and BLAs for the company's pipeline.
    • Partner with colleagues in Discovery, Cell Line, Downstream Process Development, Analytical Sciences, and Manufacturing to develop integrated clinical and commercial process and manufacturing solutions that achieve quality by design targets with robust control strategies.
    • Advancing the upstream platform processes through creative process improvement initiatives to increase operational efficiency and reduce costs.
    • Collaborate with academia, industry partners, and vendors to drive development, innovation, and adoption of new process technologies.
    • Keep current with the external literature environment; actively present and publish externally and pursue patenting strategies.

MINIMUM EDUCATION REQUIREMENTS:
    • Ph.D. with 4+ years' experience or Master's with 8+ years' experience in chemical engineering, Bioengineering, Biological Engineering, or a related field

REQUIRED EXPERIENCE AND SKILLS:
    • Technical background and hands-on experience with mammalian cell culture and fed-batch processes to produce recombinant proteins.
    • Scientific understanding and working knowledge of CHO cell biology, metabolism, cell culture media and engineering principles for large scale recombinant protein production systems.
    • Working knowledge of statistical methods (design of experiment, multivariate data analysis) and tools (SIMCA, JMP, etc.).
    • Understanding of cell culture bioreactors including microbioreactors, bench-scale and pilot-scale bioreactors, and bioreactor scale-up principles from laboratory to large scale.
    • Proven track record of accomplishments in upstream process and technology development with a strong scientific publication and presentation track record.
    • Ability to direct the planning, execution, analysis, and documentation of all stages of cell culture process development.
    • Plan, execute, analyze, and communicate complex and critical data in a highly organized manner.
    • Excellent verbal, written communication, and interpersonal skills.
    • Ability to work effectively in cross-functional and matrixed team environment; collaborate with both internal and external partners including vendors.
    • Demonstrated ability for taking initiative, creativity, and innovation in problem solving.
    • Productivity and efficiency working in the laboratory.
    • Ability to deliver complex objective under aggressive timelines.

PREFERRED EXPERIENCE AND SKILLS:
    • Experience with cell culture media development.
    • Experience with high throughput microbioreactor systems and advanced in situ analytics for process monitoring and control.
    • Experience with state-of-the-art cell culture processes including intensified inoculum/fed-batch and perfusion process development.
    • Background in data science approaches related to cell culture and predictive modeling, e.g. metabolic flux (MFA) analysis, omics, machine learning; computational fluid dynamics, and experience integrating PAT efforts.
    • Experience with late-stage commercial process development, technology transfer, scale-down model qualification, and process characterization.
    • Knowledge of biologics CMC development cycle and scale-up/down in addition to tech transfer to GMP manufacturing site.

Required Skills:
Cell Line Development, Detail-Oriented, Downstream Process Development, Drug Delivery Technology, Drug Development, Expression Vectors, Interpersonal Relationships, Leading Project Teams, Molecular Biology, Pharmaceutical Formulations, Pharmaceutical Process Development, Physical Characterization, Stable Cell Lines, Strategic Planning
Preferred Skills:
Current Employees apply HERE
Current Contingent Workers apply HERE
US and Puerto Rico Residents Only:
Our company is committed to inclusion, ensuring that candidates can engage in a hiring process that exhibits their true capabilities. Please click here if you need an accommodation during the application or hiring process.
As an Equal Employment Opportunity Employer, we provide equal opportunities to all employees and applicants for employment and prohibit discrimination on the basis of race, color, age, religion, sex, sexual orientation, gender identity, national origin, protected veteran status, disability status, or other applicable legally protected characteristics. As a federal contractor, we comply with all affirmative action requirements for protected veterans and individuals with disabilities. For more information about personal rights under the U.S. Equal Opportunity Employment laws, visit:
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EEOC GINA Supplement
We are proud to be a company that embraces the value of bringing together, talented, and committed people with diverse experiences, perspectives, skills and backgrounds. The fastest way to breakthrough innovation is when people with diverse ideas, broad experiences, backgrounds, and skills come together in an inclusive environment. We encourage our colleagues to respectfully challenge one another's thinking and approach problems collectively.
Learn more about your rights, including under California, Colorado and other US State Acts
The salary range for this role is
$142,400.00 - $224,100.00
This is the lowest to highest salary we in good faith believe we would pay for this role at the time of this posting. An employee's position within the salary range will be based on several factors including, but not limited to relevant education, qualifications, certifications, experience, skills, geographic location, government requirements, and business or organizational needs.
The successful candidate will be eligible for annual bonus and long-term incentive, if applicable.
We offer a comprehensive package of benefits. Available benefits include medical, dental, vision healthcare and other insurance benefits (for employee and family), retirement benefits, including 401(k), paid holidays, vacation, and compassionate and sick days. More information about benefits is available at https://jobs.merck.com/us/en/compensation-and-benefits.
You can apply for this role through https://jobs.merck.com/us/en (or via the Workday Jobs Hub if you are a current employee). The application deadline for this position is stated on this posting.
San Francisco Residents Only: We will consider qualified applicants with arrest and conviction records for employment in compliance with the San Francisco Fair Chance Ordinance
Los Angeles Residents Only: We will consider for employment all qualified applicants, including those with criminal histories, in a manner consistent with the requirements of applicable state and local laws, including the City of Los Angeles' Fair Chance Initiative for Hiring Ordinance
Search Firm Representatives Please Read Carefully
Merck & Co., Inc., Rahway, NJ, USA, also known as Merck Sharp & Dohme LLC, Rahway, NJ, USA, does not accept unsolicited assistance from search firms for employment opportunities. All CVs / resumes submitted by search firms to any employee at our company without a valid written search agreement in place for this position will be deemed the sole property of our company. No fee will be paid in the event a candidate is hired by our company as a result of an agency referral where no pre-existing agreement is in place. Where agency agreements are in place, introductions are position specific. Please, no phone calls or emails.
Employee Status:
Regular
Relocation:
Domestic
VISA Sponsorship:
Yes
Travel Requirements:
10%
Flexible Work Arrangements:
Not Applicable
Shift:
Not Indicated
Valid Driving License:
No
Hazardous Material(s):
n/a
Job Posting End Date:
10/1/2026
*A job posting is effective until 11:59:59PM on the day BEFORE the listed job posting end date. Please ensure you apply to a job posting no later than the day BEFORE the job posting end date.

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