Senior Scientist, Chemistry

Job Description We are seeking a highly motivated and experienced Senior Scientist to join the Analytical Supply Analytical Sciences – API Supply group. This dynamic, laboratory-based position offers the opportunity to work in a fast-paced, multidisciplinary team, focused on solving complex analytical challenges related to the development and validation of Active Pharmaceutical Ingredient (API) manufacturing processes. The focus will be on supporting in-line products as well as launch products. The ideal candidate will have a strong scientific background and will collaborate with both internal and external teams to ensure the successful commercialization of our innovative drug products. This role offers a unique opportunity to make a significant impact in the pharmaceutical industry, ensuring compliant, robust, and efficient supply of critical materials. The Supply Analytical Sciences – API Supply group has a Senior Scientist position available at the Rahway, NJ site. Job Function: The Senior Scientist position is a laboratory-based scientific role in a fast-paced, multidisciplinary team environment. The role is tasked with solving high complexity analytical problems related to the development and validation of API manufacturing processes for the commercialization of our Company innovative drug products. The incumbent will be expected to interact closely with internal development partners and with internal and external sites in our Company manufacturing network in identifying, implementing, and troubleshooting laboratory test methods and workflows as well as materials for ensuring compliant, robust, and responsive supply. The individual will have a deep understanding of the regulatory and business environment and needs related to API development and commercial supply and provide critical analytical support to ensure the successful commercialization of API manufacturing processes. Education Minimum Requirement and Experience: Bachelor’s Degree in Chemistry or related discipline with five (5) years of relevant pharmaceutical development experience; OR Master’s Degree in Chemistry or related discipline with three (3) years of relevant pharmaceutical development experience PhD with relevant course experience Required Experience and Skills: Strong chemistry knowledge Good Manufacturing Practice (GMP) experience Demonstrated problem solving ability including the ability to perform investigations with strong technical troubleshooting skills and to assist in developing/implementing CAPAs Experience with common analytical techniques such as chromatography, spectroscopy, and Karl Fischer Strong communication (verbal and written) and interpersonal skills Ability to quickly adapt to changes and develop appropriate plans for managing risks Preferred Experience and Skills: Working knowledge of API development and commercialization Technical experience that includes LC-MS, GC-MS and/or ICP-MS. Working knowledge of CMC filing requirements and regulatory guidance's (e.g., ICH) for API Experience working with CMO’s and CRO’s Demonstration of working in cross-functional team Strong interpersonal skills including the ability and sensitivity to deal with different cultures Required Skills: Accountability, Adaptability, Analytical Method Development, API Development, Chromatography, Commercialization, Data Analysis, Data-Driven Decision Making, Fast-Paced Environments, Infrared Spectroscopy, Laboratory Testing, Manufacturing Processes, Motivation Management, Multidisciplinary Collaboration, Pharmaceutical Development, Problem Solving, Process Analytical Technology (PAT), Protein Chromatography, Risk Management, Spectrometry, Spectroscopy 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: 25% Flexible Work Arrangements: Hybrid Shift: Not Indicated Valid Driving License: No Hazardous Material(s): various chemicals Job Posting End Date: 08/12/2026 *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.