Scientist, Immunoassays

Legendcareers; New Jersey; On-site; USD 96,000 - 126,000; Full time

Benefits offered by this job

Medical, dental, vision insurance

401(k) match

Parental leave (8 weeks)

Paid time off

Well-being programs

Job summary

Legend Biotech is seeking a Scientist, Immunoassays to join the Bioanalytical team in Somerset, NJ. The role focuses on developing, qualifying, and validating bioanalytical assays for immunogenicity and ADA assessment in preclinical and clinical studies.

The candidate will work hands-on with ELISA, MSD, and Luminex platforms, analyze data, and prepare regulatory documents while ensuring GXP/GLP compliance. Collaboration across study teams is essential.

Qualifications

• PhD or Master’s with substantial industry experience in immunoassays and biomarker work.
• Hands-on ELISA, MSD, and Luminex assay development and validation experience.
• Experience with non-clinical and clinical sample analysis in regulated environments.
• Familiarity with FDA/ICH guidelines for Ligand Binding Immunoassays.
• Proficiency with LIMS and ELN for sample logistics and documentation.
• Ability to work in a cross-functional team supporting cell/gene therapy programs.
• PPE required and safe handling of biological materials.
• AI literacy with responsible use of tools and oversight.
• Experience working in clinical, research, pharmaceutical, or diagnostic labs.

Responsibilities

• Develop, qualify, and validate bioanalytical assays for immunogenicity and ADA assessment.
• Analyze data and generate regulatory documentation.
• Prepare validation plans, SOPs, reports and technical documents.
• Coordinate sample management with LIMS and ELN; maintain chain of custody.
• Collaborate across cross-functional teams to support timelines.

Skills

ELISA assays

MSD platform

Luminex platform

Immunogenicity assessment

Data analysis

LIMS usage

GLP/GXP awareness

Education

PhD in Biology or related

Master's in related field

Tools

LIMS

ELN

Job description

Legend Biotech is a global biotechnology company dedicated to treating and, one day, curing life‑threatening diseases. Headquartered in Bridgewater, New Jersey, we are advancing the next generation of cell therapy through a portfolio of innovative technologies, including autologous, allogeneic, and in vivo cell therapy approaches. Our research spans chimeric antigen receptor T‑cell (CAR‑T), T‑cell receptor (TCR‑T), natural killer (NK) cell‑based therapies, and other emerging platforms designed to transform the treatment of serious diseases. From our global network of research and development sites, we are committed to discovering and developing safe, effective, and cutting‑edge therapies for patients worldwide.

Legend Biotech entered into a global collaboration agreement with Johnson & Johnson to jointly develop and commercialize CARVYKTI® (ciltacabtagene autoleucel; cilta‑cel). Through this strategic partnership, we combine complementary expertise and capabilities to advance innovative immunotherapies for patients living with multiple myeloma.

Legend Biotech is seeking a Scientist, Immunoassays as part of the Bioanalytical team based in Somerset, NJ.

Role Overview

The Scientist, immunogenicity & Immunoassays is responsible for developing, qualifying, validating, and supporting bioanalytical assays used to assess immunogenicity and immune responses in preclinical and clinical studies. The successful candidate will have hands‑on experience with Anti‑Drug Antibody (ADA) assays, ELISAs, and other ligand‑binding immunoassays and will contribute to assay development, method optimization, sample analysis, data interpretation, and regulatory documentation.

This position requires strong laboratory skills, scientific problem‑solving abilities, and the capability to work collaboratively in a cross‑functional environment supporting cell therapy, and gene therapy programs

Key Responsibilities

• Perform method development, qualification and validation for of soluble biomarker and immunogenicity (ADA) assays using ligand binding assay (ELISA, MSD and Luminex).
• Troubleshoot assay related issues with minimal guidance.
• Prepare and review assay protocols, validation plans, reports, SOP and technical documents.
• Data analysis using relevant analytical software.
• Perform routine laboratory responsibilities such as sample coordination, receiving and reconciliation using LIMS with maintaining adequate chain of custody and documentation.
• Use of ELN (electronic notebooks) to record laboratory work and for inventory management.
• Ensure the documentation and laboratory work is in compliance with GXP and GLP like regulatory environments.
• Ensure the assay qualification and validation are performed following the FDA, EMA and ICH guidelines.
• Collaborate with scientists, study managers, and cross‑functional teams to support program timelines.
• Assist in method transfer and assay implementation activities.
• Participate in continuous improvement initiatives to enhance assay robustness and laboratory efficiency.
• Present scientific data at internal and external meetings.

Requirements

• PhD in Biology, Immunology, Biochemistry, Biotechnology, Pharmaceutical Sciences, or related scientific field with 0-3 years of relevant industry experience.
• Master's degree in a related scientific discipline with 6-8 years of relevant industry experience.
• Hands‑on experience with ELISA assay and MSD (Meso Scale Discovery) and Luminex platform.
• 2-6 years of hands‑on experience with biomarker and ADA assay development and validation.
• Experience with non‑clinical and clinical sample analysis in a regulated environment.
• Use of LIMS and ELN for sample logistics and documentation.
• Solid understanding of FDA and ICH guidelines for Ligand Binding Immunoassay qualification and validation for Immunogenicity assessment and biomarkers.
• Work in a clinical, research, pharmaceutical, or diagnostic laboratory.
• Use of personal protective equipment (PPE) is required.
• Involve handling biological specimens and hazardous materials following safety guidelines.
• AI Literacy:
  • Possesses a working knowledge of AI technologies and approved AI tools, applies them responsibly to enhance productivity and decision‑making, exercises appropriate human oversight of AI‑generated outputs, and complies with organizational policies governing AI use.

The base pay range below is what Legend Biotech USA Inc. reasonably expects to offer at the time of posting. Actual compensation may vary based on experience, skills, qualifications, and geographic location. The company reserves the right to modify this range as needed and in accordance with applicable laws.

Other Types of Pay: Performance‑based bonus and/or equity is available to employees in eligible roles.

Benefits and Paid Time Off: Medical, dental, and vision insurance as well as a 401(k) retirement plan with a company match that vests fully on day one. We offer eight (8) weeks of paid parental leave after just three (3) months of employment, and a paid time off policy that includes vacation time, personal time, sick time, floating holidays, and eleven (11) company holidays. Additional voluntary benefits include flexible spending and health savings accounts, life and AD&D insurance, short- and long‑term disability coverage, legal assistance, and supplemental plans such as pet, critical illness, accident, and hospital indemnity insurance. We also provide voluntary commuter benefits, family planning and care resources, well‑being initiatives, and peer‑to‑peer recognition programs; demonstrating our ongoing commitment to building a culture where our people feel empowered, supported, and inspired to do their best work.

Pay Range (Base Pay): $96,267 — $126,351 USD

Please note: These benefits are offered exclusively to permanent full‑time employees. Contractors are not eligible for benefits through Legend Biotech.

Work Authorization & Employment Eligibility

Applicants must be authorized to work in the United States. As part of our commitment to maintaining a lawful workforce and ensuring compliance with federal employment regulations, we participate in the E‑Verify program. If you are selected for employment, you will be required to complete the Form I-9 process, and your employment eligibility will be verified through E‑Verify in accordance with applicable federal law. We are committed to providing a fair, transparent, and welcoming hiring experience for all candidates.

EEO Statement

It is the policy of Legend Biotech to provide equal employment opportunities without regard to actual or perceived race, color, creed, religion, national origin, ancestry, citizenship status, age, sex or gender (including pregnancy, childbirth, related medical conditions and lactation), gender identity or gender expression (including transgender status), sexual orientation, marital status, military service and veteran status, disability, genetic information, or any other protected characteristic under applicable federal, state or local laws or ordinances.

Employment is at‑will and may be terminated at any time with or without cause or notice by the employee or the company.

For information related to our privacy notice, please review: Legend Biotech Privacy Notice.