# Senior Scientist, R&D - Assay Development

**Company**: Hims & Hers
**Location**: South Plainfield, New Jersey
**Work arrangement**: onsite
**Experience**: senior
**Job type**: Full time
**Salary**: $125K – $140K
**Category**: Research
**Industry**: Healthcare

**Apply**: https://jobs.ashbyhq.com/hims-and-hers/fa66e1e4-edba-4873-bb24-af6cc5a58ba9?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply
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## Description

Hims & Hers is seeking a Senior Scientist, R&D to join our growing laboratory organization. This individual contributor will report to the Director of R&D and work closely to develop and validate diagnostic assays supporting both traditional and at-home testing programs.

**Responsibilities:**

- Design and execute immunoassay development, optimization, and verification studies including ELISA, chemiluminescent, and multiplex formats

- Perform method validation experiments including precision, accuracy, linearity, interference, and stability testing per established protocols

- Apply Design of Experiments (DOE) and statistical methodologies to assay optimization and troubleshooting

- Support LC-MS/MS method development and validation for clinical chemistry and hormone analytes

- Evaluate performance characteristics of capillary versus venous specimens, investigate interference, and develop strategies to extend sample stability

- Develop and revise SOPs to support consistent, reproducible laboratory operations

- Prepare validation summaries, protocols, and technical reports in compliance with quality and regulatory standards

**Requirements:**

- PhD in Clinical Chemistry, Biochemistry, Analytical Chemistry, Molecular Biology, or related field with 4+ years; OR Master's degree with 7+ years; OR Bachelor's degree with 10+ years of relevant bench experience in a diagnostic or clinical laboratory setting

- Demonstrated hands-on experience in immunoassay development including singleplex and multiplex formats

- Experience with LC-MS/MS instrumentation including sample preparation and method validation

- Experience with capillary and venous blood-based specimen types

- Demonstrated experience leading assay validation and verification studies

- Experience applying DOE and statistical methodologies to assay development and optimization

- Proven ability to work independently and drive projects from concept to completion

**Benefits:**

- Competitive salary & equity compensation for full-time roles

- Unlimited PTO, company holidays, and quarterly mental health days

- Comprehensive health benefits including medical, dental & vision, and parental leave

- Employee Stock Purchase Program (ESPP)

- 401k benefits with employer matching contribution

- Offsite team retreats

## Skills

### Required
- immunoassay development
- LC-MS/MS instrumentation
- assay validation
- statistical methodologies
- Design of Experiments (DOE)

### Nice to have
- CAP and/or CLIA regulated laboratory environment
- at-home or point-of-care diagnostic testing programs
- dried blood spot (DBS) workflows
- emerging biomarker categories
- NGS-based workflows

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Source: [Apply at jobs.ashbyhq.com](https://jobs.ashbyhq.com/hims-and-hers/fa66e1e4-edba-4873-bb24-af6cc5a58ba9?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply)