Senior Scientist, Chemistry (On-site)

About the role

O ur Company is seeking a talented scientist to join the Catalysis and Flow Lab within the Process Research & Development organization at its Rahway, NJ site.

The successful candidate will

Develop and implement novel flow chemistry and continuous processing technologies to enable robust, sustainable, and efficient API manufacturing processes.

This role involves laboratory experimentation in flow chemistry and close collaboration with multidisciplinary teams of synthetic and analytical chemists and chemical engineers.

Key responsibilities include

• Enabling new chemical transformations and influencing route design.
• The broader flow chemistry team also supports API campaigns at laboratory, pilot, and manufacturing scales.
• Candidates should be passionate about becoming subject matter experts in flow chemistry and continuous processing within the Process Chemistry Department.
• Candidates must have a PhD in chemistry or chemical engineering, or a bachelor's degree in either field with at least 4 years of experience in the pharmaceutical industry, along with a demonstrated ability to solve complex problems.
• The role requires a high level of innovation, creativity, and initiative.
• Candidates should demonstrate strong written and oral communication skills and the ability to collaborate effectively in a team environment.

Education Minimum Requirements

• PhD in chemistry or chemical engineering,

OR

• a bachelor's degree in either field with at least 4 years of experience in the pharmaceutical industry.

Required Experience and Skills

• Working knowledge of flow chemistry.
• A record of outstanding research in the candidate's field of expertise that can be shared during the interview process.
• Demonstrated fluency in organic chemistry principles.
• Ability to collaborate effectively with multidisciplinary teams and outstanding communication skills.
• Strong problem-solving and troubleshooting skills.
• High-level leadership and interpersonal skills.

Preferred Experience and Skills

• Familiarity with programming and lab automation.
• Experience in electrochemistry or photochemistry.
• A track record of peer-reviewed publications and research presentations.

Required Skills

Analytical Method Development, Chemical Engineering, Chemical Proteomics, Chemical Synthesis, Chemometrics, Chromatography, Data-Driven Decision Making, Flow Chemistry, Laboratory Automation, Mass Spectrometry Based Proteomics, Organic Chemistry, Organometallic Chemistry, Pharmaceutics, Process Analytical Technology (PAT), Protein Chromatography

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.
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• 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.

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• The primary location for this posting is: USA - New Jersey - Rahway

Pay and benefits

Where required by law, the compensation range for this role is provided below.

The salary range for the primary location of this role is

$117,000.00 - $184,200.00

This range reflects the Company's reasonable expectation of the base salary applicable to this role at the time of 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.

Additional location(s): Please note the salary range above applies to the Primary Location of the position. Where a role has other listed locations, different compensation guidelines may apply. You may find the salary ranges for additional locations below. If the salary range is not listed for the location you are applying to, our Talent Acquisition team will provide further information to you relevant to your location.

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

Travel Requirements

Flexible Work Arrangements: Not Applicable

Job Posting End Date: 11/11/2026

*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.