Regeneron Pharmaceuticals, Inc

Associate Scientist, Host Cell Protein (HCP) Analytics

Regeneron Pharmaceuticals, Inc$93K — $153K *
Pharmaceuticals & Biotech
Less than 5 years of experience
Job Overview by Ladders

Qualifications

  • BS/MS in Biochemistry, Chemistry, Molecular Biology, or related life science discipline
  • Hands-on experience with protein purification techniques
  • Familiarity with ELISA and immunoassay methods
  • Ability to manage multiple tasks independently
  • Strong written and verbal communication skills

Responsibilities

  • Purify polyclonal antibodies using affinity chromatography
  • Optimize purification protocols to enhance yield and quality
  • Develop, qualify, and troubleshoot ELISA methods for HCP detection
  • Manage and prepare critical reagents for assay consistency
  • Document experimental work in an electronic laboratory notebook
  • Collaborate with teams on reagent needs and assay criteria
  • Contribute to improving laboratory workflows and practices

Benefits

  • Student Loan Paydown program & Tuition Reimbursement
  • Family Care Benefits
  • Relocation Assistance
  • Inclusion, Culture and Well-Being programs
Full Job Description

We are seeking a Associate Scientist to join our Product Biochemistry group, supporting our Host Cell Protein (HCP) analytical program. In this role, you will focus on polyclonal antibody purification, ELISA method development, and related reagent generation activities that underpin our HCP impurity monitoring strategy across biologics programs.

This position offers the opportunity to play a key role in enabling high-quality analytical support for process development, CMC, and regulatory filings, contributing to a fast-growing, science-driven organization making a meaningful difference to patients worldwide.

When & where:

  • Shift Requirements: Full-time, standard business hours
  • Location: On-site laboratory setting
  • Flexibility & travel: Minimal to no travel; on-site presence required to support laboratory operations

What you'll do:

  • Purify polyclonal antibodies from rabbit/goat bleeds immunized with host cell protein antigens, using affinity chromatography and other standard purification workflows
  • Optimize and streamline purification protocols to improve yield, purity, reproducibility, and throughput
  • Support ELISA method development, qualification, and troubleshooting for HCP detection and quantitation
  • Prepare, aliquot, and manage critical reagents (antibodies, conjugates, standards, buffers) to ensure consistent assay performance
  • Document all experimental work in the electronic laboratory notebook (ELN) in accordance with defined procedures and departmental standards, and provide documentation upon request to support internal reviews, tech transfer, or regulatory submissions
  • Collaborate cross-functionally with process development, QC, and analytical teams to align on reagent needs and assay performance criteria
  • Contribute to continuous improvement of laboratory workflows and best practices

The environment and physical rhythms of this role:

  • This is a hands-on, on-site laboratory role centered on protein purification and immunoassay work, requiring rigorous attention to detail and consistent documentation practices.
  • Flexibility to work independently, manage multiple tasks in parallel, and collaborate effectively within a team-oriented environment is required.

Let's find out if we're a fit:

Must-haves:

  • BS/MS in Biochemistry, Chemistry, Molecular Biology, or a related life science discipline
  • Hands-on experience with protein purification (affinity chromatography, e.g., Protein A/G, antigen-affinity columns; AKTA or equivalent FPLC systems preferred)
  • Working knowledge of ELISA and general immunoassay techniques
  • Ability to work independently, manage multiple tasks in parallel, and maintain rigorous attention to detail
  • Excellent written and verbal communication skills; team-oriented mindset

Preferred / nice-to-haves:

  • Prior ELN experience
  • Strong documentation habits

Thrive today. Grow tomorrow.

  • Student Loan Paydown program & Tuition Reimbursement
  • Family Care Benefits
  • Relocation Assistance
  • Inclusion, Culture and Well-Being programs (including physical & mental health)

Salary Range (annually)

$93,900.00 - $153,300.00

About Regeneron Pharmaceuticals, Inc

Regeneron Pharmaceuticals is a biopharmaceutical company that discovers, develops, and commercializes pharmaceutical products for the treatment of serious medical conditions. The Company has therapeutic candidates in clinical trials for the potential treatment of cancer, eye diseases, and inflammatory diseases, and has preclinical programs in other diseases and disorders. The company’s product portfolio includes EYLEA, an aflibercept injection; ARCALYST, a rilonacept Injection for subcutaneous use; ZALTRAP for metastatic colorectal cancer; trap fusion proteins; and fully human monoclonal antibodies. On March 26, 2012, it was announced that Sanofi and Regeneron are in development with a new cholesterol drug which will help reduce cholesterol up to 72%. Regeneron Pharmaceuticals was founded in 1988 and is currently headquartered in New York, USA.

Regeneron Pharmaceuticals, Inc Careers

Join the innovative team at Regeneron Pharmaceuticals, Inc, a leading biotechnology company renowned for its commitment to science-driven solutions. This is an unparalleled opportunity to advance your career with a company at the forefront of medical breakthroughs and clinical research.

Work You’ll Do

At Regeneron Pharmaceuticals, Inc, you will collaborate with some of the brightest minds in the industry, engaging in work that directly contributes to the health and well-being of populations globally. Our diverse team of professionals is dedicated to pioneering developments in biotechnology through continuous innovation and rigorous research.

Explore Job Opportunities and Growth

Regeneron offers a variety of job opportunities that encourage professional growth and personal achievement. Whether you're seeking an entry-level position or a more senior role, you will find a path that aligns with your career ambitions and skills. Our supportive culture emphasizes leadership development and diversity training, ensuring every team member can thrive.

Internship Programs

Kickstart your career with a Regeneron internship. Our programs provide invaluable industry experience, mentoring from seasoned professionals, and opportunities to develop skills that are crucial in the biotech field. Interns at Regeneron gain hands-on experience, contributing to projects that matter.

Benefits and Culture

Choosing to work at Regeneron Pharmaceuticals, Inc means choosing a career that comes with competitive benefits designed to support you both professionally and personally. We offer comprehensive health benefits, retirement plans, and wellness programs. Our inclusive culture fosters an environment where every employee can flourish, driven by collaboration and mutual respect.

Innovation and Leadership

Lead the way in biotechnological innovation with Regeneron. Our leadership is constantly looking towards the future, investing in cutting-edge technology and research that pave the way for medical advancements. At Regeneron, leadership and innovation go hand in hand, creating a dynamic where breakthroughs are common.

Networking and Professional Development

Enhance your professional network and skill set through Regeneron’s extensive networking opportunities and ongoing professional development programs. We believe in nurturing our talent with advanced training sessions and regular workshops that cover the latest trends and technologies in the biotech industry.

Join Our Team

Discover the impact you can make in a career at Regeneron Pharmaceuticals, Inc. Search for open positions that match your skills and interests. We are continuously hiring and looking for passionate, curious, and innovative team players.

Stay Connected

Keep up to date with the latest at Regeneron by following our careers blog. Gain insights from the experts and learn more about the exciting world of biotech at Regeneron Pharmaceuticals, Inc.

Prepare for Your Interview

Ready to join us? Prepare your resume and refine your interview skills to become part of a company that’s dedicated to changing lives. Personalize your job search and get tailored job alerts directly to your inbox, so you never miss an opportunity to be part of our team. At Regeneron Pharmaceuticals, Inc, your career is poised for tremendous growth and innovation. Explore the opportunities today and be part of a team that’s shaping the future of biotechnology.
Learn more about Regeneron Pharmaceuticals, Inc
Size
10,368 employees
Market Cap
$78.1 billion
Industry
Net Income
$3.5 billion
Founded
1988
5 Year Trend
+27%
Revenue
$8.4 billion
NASDAQ

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