Senior Scientist, Analytical Research and Development

Job Description North American GMP Operations, Rahway, NJ We invite individuals who possess a deep passion for promoting lifesaving and life-enhancing products to join our dynamic team. Our team is highly dedicated and committed to offering exceptional scientific oversight, driving the success of our Company's extensive range of products from candidate selection to market authorization. At our company, we proudly continue to build upon a legacy of groundbreaking innovation while steadfastly upholding the highest standards of ethics and integrity. With a workforce representing a multitude of languages and cultures, we stand unified in our collective mission to deliver revolutionary medicines and products with integrity and transparency. We are seeking an enthusiastic Senior Scientist (R3) to join our Rahway, NJ team in Biologics AR&D GMP Operations. The role involves developing and performing analytical methods for raw materials testing, authoring and maintaining Standard Operating Procedures (SOPs), supporting instrument qualification, and collaborating with production for timely, compliant raw material release for clinical batch production. Candidates should thrive in a fast-paced, multidisciplinary setting and will play a key part in advancing Biologics commercialization. The incumbent will work with stakeholders such as Technical Operations, Manufacturing, Analytical Development, Large Molecule Assay Validation, Quality Assurance, and CMC Regulatory Affairs to solve technical issues, offer scientific guidance throughout development, and manage deliverables to advance the pipeline. Responsibilities Execute activities in accordance with Good Manufacturing Practices (GMP). Author, review, and maintain Standard Operating Procedures for raw materials testing, instrument operation, and laboratory processes. Support instrument qualification (IQ/OQ/PQ) activities for analytical equipment. Implement traditional and advanced analytical methods to support execution of raw material testing. Serve as an SME for raw materials analytical testing, procedures, and practices at our Biologics Development Center in Rahway and North Wales, PA labs. Oversee project timelines and deliverables, focusing on coordinating raw materials testing to meet clinical program milestones. In this role, work closely with the production team, process development, and analytical development staff to understand manufacturing schedules and ensure prompt analytical support is provided. Support the development and improvement of raw material workflows for existing and newly constructed manufacturing facilities in our network. Support biologics registrations, product launches, and troubleshooting activities. Support compliance audits, inspection activities, and investigation/CAPAs. Advance strategic initiatives across matrixed teams. Author and review technical documentation including regulatory submissions. Additional responsibilities as assigned to support the evolving needs of the department. Qualifications Ph.D. in biology, chemistry, biochemistry or related field or M.S. with a minimum of 3 years of relevant experience or B.S. with a minimum of 7 years of relevant experience. Experience and Skills Required Knowledge of chemical properties and traits of common biologics manufacturing materials, including salts, excipients, media components, and chromatography resins. Proficient in analytical techniques including spectroscopy (such as FTIR and RAMAN), UV spectrophotometry, and compendial methods like pH and conductivity testing. Strong organizational skills with proven ability to manage timelines and deliverables. Able to proactively recognize and communicate potential risks. Proven ability to solve technical problems with innovation. Ability to work independently and within a matrixed team. Effective communication (oral and written) and leadership skills. Strong interpersonal skills with adeptness to lead by influencing others. Self-motivated with a positive attitude and proven performance record. Willingness to occasionally work irregular hours, including evenings and weekends, as needed. Occasional travel to our Pennsylvania laboratory as required. Preferred GMP experience and understanding of data integrity principles (ALCOA+) for documentation are highly preferred. Experience and understanding of testing raw materials in pharmaceutical or similar settings. Skilled in LIMS, Empower, electronic notebooks, and data analytics platforms. Knowledge of cGxP operation, USP, EP, ICH, and FDA guidelines. Experience with analytical method validation and life cycle management. Deviation management and change control processes. Experience with method development and/or regulatory submissions. Continuous improvement or lean six sigma methodology Required Skills: Accountability, Adaptability, Analytical Method Development, Analytical Validation, Assay, Assay Development, Bioanalytical Analysis, Communication, GMP Compliance, GMP Environments, Innovative Thinking, IR Spectroscopy, Laboratory Analysis, Laboratory Techniques, Manufacturing, Raman Spectroscopy, Raw Material Testing, Self Motivation, Strategic Thinking, Technical Issues, Technical Writing, Ultraviolet-Visible UV/VIS Spectrophotometers, Working Independently 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: EEOC Know Your Rights 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 $117,000.00 - $184,200.00 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 You can apply for this role through (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: No Travel Requirements: 10% Flexible Work Arrangements: Not Applicable Shift: 1st - Day Valid Driving License: No Hazardous Material(s): No Job Posting End Date: 06/19/2026 *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. Our company is a global health care leader with a diversified portfolio of prescription medicines, vaccines and animal health products. The difference between potential and achievement lies in the spark that fuels innovation and inventiveness; this is the space where we have codified our legacy for over a century. Our success is backed by ethical integrity, forward momentum, and an inspiring mission to achieve new milestones in global healthcare.