Laboratory Scientist, Genetic Toxicology (On-site)

We are seeking a laboratory scientist to join the Genetic Toxicology group within Non-clinical Drug Safety. This individual will be part of a high-performing team and will primarily conduct in vitro genotoxicity studies in mammalian cells (e.g., in vitro micronucleus), under both screening and Good Laboratory Practice (GLP) conditions, in support of drug discovery and development.

Responsibilities

• Conduct routine and non-routine genetic toxicology assays using mammalian cell cultures or isolated samples from in vivo studies.
• Maintain laboratory equipment in accordance with GLP standards.
• Maintain cell cultures and perform manual microscopic analysis of fixed cells for the presence of micronuclei.
• Collaborate closely with other scientists within the genetic toxicology group and other functional areas of Non-clinical Drug Safety.
• Demonstrate flexibility with rapidly changing work assignments, schedules, and priorities.
• Apply problem-solving skills and communicate effectively both verbally and in writing.

Requirements

• Bachelor of Science or MS degree in Biology, Cellular & Molecular Biology, Chemistry, Biochemistry, or related sciences, plus at least 3 years of relevant experience.
• Excellent verbal and written communication skills.
• Demonstrated laboratory skills in cellular/molecular biology, including in vitro cell culture techniques.
• Ability to collaborate across diverse scientific backgrounds, adapt to a matrix environment, and meet tight timelines.
• Self-driven and accountable for own learning.

Preferred Qualifications

• Experience with Genetic Toxicology assay design and conduct, such as the in vitro micronucleus assay.
• Experience working in accordance with GLP standards.

Skills

• Required: Assay, Biomarker Identification, Cell-Based Assays, Cell Cultures, Detail-Oriented, Experimentation, High-Throughput Screening, In Vitro Assays, Laboratory Techniques, Mammalian Cell, Mammalian Cell Culture, Microscopic Examination, Molecular Biology, Molecular Microbiology, Primary Cell Culture, Sample Processing, Scientific Writing, Teamwork, Technology Development, Toxicology.
• Preferred: Genotoxicity.

Pay

The salary range for this role is $87,300.00 - $137,400.00. An employee’s position within the salary range will be based on 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.

Benefits

• 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 Merck Compensation and Benefits.

Schedule

• 1st shift (Day).
• 10% travel requirements.
• Regular, full-time employee status.

This posting is effective until 11:59:59 PM on 08/17/2026.