Principal Scientist

Merck Group$113K — $169K *
Pharmaceuticals & Biotech
11 - 15 years of experience
Job Overview by Ladders

Qualifications

  • BS or MS in Chemistry, Analytical Science, or related field.
  • 15+ years in GLP/GMP analytical environments.
  • Proven leadership in method validation and transfer.
  • Experience mentoring cross-functional teams.
  • Strong critical and analytical thinking skills.

Responsibilities

  • Perform advanced analytical testing (qPCR, ddPCR, HPLC, CE-SDS, ELISA).
  • Lead cross-functional analytical programs across multiple products.
  • Define method validation and transfer strategy with auditable documentation.
  • Mentor scientists and provide leadership in data integrity and statistical analysis.
  • Lead root-cause investigations for OOS/OOT events and implement CAPAs.
  • Oversee instrument qualification and routine maintenance for critical platforms.
  • Develop and maintain SOPs for analytical methods and ensure data integrity.

Benefits

  • Health insurance options.
  • Paid time off (PTO).
  • Retirement contributions.
  • Potential for sales or performance-based bonuses.
Full Job Description
This role does not offer sponsorship for work authorization. External applicants must be eligible to work in the US.

Your Role:

MilliporeSigma is seeking a skilled and motivated Analytical Scientist with expertise in validation of analytical methods to support a Viral Vector CDMO Facility in Carlsbad, CA. The successful candidate will be responsible for conducting advanced analytical analyses, transferring and validating analytical methods to support all Phases of GMP Viral Vector client programs and ensuring the accuracy and reliability of test results. The Quality Scientist position, like all positions at MilliporeSigma, will have a willingness to contribute to the overall success of the company by assisting in many areas beyond specific job duties.

Key Responsibilities:
  • Perform advanced analytical testing such as qPCR, ddPCR, HPLC, CE-SDS, and ELISA.
  • Lead and own large, cross-functional analytical programs (method development, validation/transfer, QC support) across multiple products or programs.
  • Define and drive the method validation/transfer strategy, including relevant considerations (e.g. ddPCR, qPCR, HPLC, ELISA, CE-SDS, FTIR, Gel Electrophoresis, etc.) with auditable documentation.
  • Mentor and develop scientists; provide technical leadership in data integrity, statistics, and interpretation of complex analytical data.
  • Lead root-cause investigations for OOS/OOT events; implement CAPAs with measurable effectiveness; drive continuous improvement.
  • Oversee instrument qualification (IQ/OQ/PQ/PM) and routine maintenance for critical platforms; ensure audit readiness.
  • Manage project planning, risk, and cross-site coordination; communicate status to leadership and clients/partners.
  • Develop and maintain SOPs, work instructions, and templates for compendial and non-compendial methods; ensure ALCOA+ data integrity.
  • Document and investigate out-of-specification (OOS) and out-of-trend (OOT) results, applying critical thinking to identify root causes and corrective actions
  • Train and mentor junior scientists, providing technical guidance and coaching.
  • Develop and review technical documentation (SOPs, work instructions, protocols, reports, transfer protocols).
  • Ensure compliance with cGMP, regulatory requirements, and ICH guidelines.
  • Drive continuous improvement initiatives to increase laboratory efficiency and analytical capability.
  • Collaborate cross-functionally with Quality Assurance, Manufacturing, Process and Analytical Development, Facilities & Engineering, global network and external partners and clients.
  • Promote a culture of safety, quality, learning, and knowledge sharing.
  • Physical Attributes:
  • Work in analytical testing lab.
  • Bend, stoop, squat, crawl, kneel, climb, or reach overhead.
  • Wear required PPE such as safety glasses, gloves, masks, and close-toed shoes.


Who You Are:

You are an accomplished Analytical Scientist with 15+ years of experience, adept at leading method validation, transfer, and optimization programs in a cGMP/FDA-regulated environment. You excel in performing advanced analytical testing (qPCR, ddPCR, HPLC, CE-SDS, ELISA) and in designing studies, analyzing complex data, and delivering actionable conclusions on schedule. You are a strong technical leader who mentors junior scientists, authors and reviews protocols and reports, and drives cross-functional collaboration across QA, Manufacturing, and external partners. You maintain rigorous data integrity, investigate OOS/OOT results with root-cause analysis, and implement corrective actions to improve quality and efficiency. You bring a Biologics/Virology background or depth in microbial testing and QA release testing, coupled with excellent scientific communication and a continuous-improvement mindset. Your focus is on ensuring test accuracy, instrument reliability, and a culture of safety, quality, and knowledge sharing.

Minimum Qualifications:
  • Education: BS or MS in Chemistry, Analytical Science, or related field (or equivalent experience).
  • Experience: 15+ years in GLP/GMP analytical environments; proven leadership in method validation/transfer; experience mentoring cross-functional teams.


Preferred Qualifications:
  • Knowledge and technical expertise with biologics analytical techniques, method validation, and assay testing.
  • Academic or industry-based background in Virology.
  • Strong critical and analytical thinking skills for effective problem-solving and outcome improvement.
  • Experience mentoring and leading junior associates.
  • Knowledge of cGMP manufacturing and quality systems within an FDA-regulated environment and ICH quality guidelines.
  • Technical Skills: Proficiency in analytical techniques (e.g., ELISA, HPLC/UPLC, qPCR/ddPCR, spectroscopy, cell-based assays); method validation/transfer; data trending and statistics; instrument maintenance; basic programming or data analysis tools a plus.
  • Regulatory/Quality: Knowledge of cGMP, ICH guidelines, and QA/QC systems; experience with regulatory submissions and deviations/CAPAs.
  • Soft Skills: Excellent scientific communication (written and oral), problem-solving, collaboration, adaptability, and mentoring ability.
  • Desired: Biologics/Virology background; experience with microbial testing, QA release testing, and GMP documentation


Pay Range for this position: $113,000-$169,600

The offer range represents the anticipated low and high end of the base pay compensation for this position. The actual compensation offered will be determined by factors such as location, level of experience, education, skills, and other job-related factors. Position may be eligible for sales or performance-based bonuses. Benefits offered by the Company include health insurance, paid time off (PTO), retirement contributions, and other perquisites. For more information click here.

About Merck Group

Merck Group Careers

There has never been a more opportune time to join Merck Group, a leading science and technology company in healthcare, life science, and performance materials. Merck Group offers a plethora of job opportunities that cater to a variety of skills and professional aspirations, making it an ideal environment for both seasoned experts and those at the start of their career journey.

Work You’ll Do

At Merck Group, every team member contributes to breakthrough innovations in healthcare, life sciences, and electronics. The company's commitment to diversity and innovation fuels its leadership in various sectors, driving growth and transformation globally. Merck Group’s career paths are diverse, offering positions that challenge individuals to use their skills in new ways every day, supported by robust training programs and development opportunities.

Explore Job Opportunities and Growth

Merck Group is not just about jobs; it's about building a career. With a vast array of positions, from research and development to marketing and sales, the company is keen on hiring and nurturing talent to lead industry transformation. Merck Group’s dedication to professional growth is evident in its comprehensive benefits package and performance management processes that aim to maximize individual potential.

Internship Programs

Starting with an internship at Merck Group can be a pivotal step in securing a prosperous career. Interns gain invaluable industry experience, working alongside seasoned professionals and engaging in projects that offer real-world applications of their studies. Internships often lead to full-time employment opportunities, providing a seamless transition from education to professional employment.

Inclusive Culture and Leadership

Merck Group is proud of its inclusive culture that embraces diversity and fosters an environment where all employees can thrive. The company’s leadership is committed to creating a workplace where diverse ideas lead to innovative outcomes. Merck Group also offers diversity training to ensure all team members are equipped to contribute to the company’s inclusive goals.

Networking and Professional Development

Employees at Merck Group are encouraged to engage in networking and professional development activities that enhance their career trajectories. The company hosts various networking events, workshops, and seminars that are designed to hone skills and foster connections within the industry. Leadership development programs are also a cornerstone, preparing employees for future roles of increased responsibility.

Stay Connected with Merck Group Careers

Interested candidates can explore open positions that match their skills and interests through the Merck Group careers page. The company values curious, creative, and solution-driven team players who are eager to make an impact.

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Merck Group is continuously looking for individuals who are ready to drive innovation and lead in the global marketplace. Whether through full-time positions, internships, or leadership roles, Merck Group offers a career path filled with opportunities for growth, learning, and leadership.
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