Demo

Scientist I

Planet Pharma
South San Francisco, CA Contractor
POSTED ON 12/5/2025 CLOSED ON 1/3/2026

What are the responsibilities and job description for the Scientist I position at Planet Pharma?

Scientist I


South San Francisco, CA

6 month contract



What are the top 3-5 skills, experience or education required for this position?

Degree in chemistry, pharmacology or other related fields. BS/MS with 1 year of LC-MS (QQQ) experience or a fresh PhD with the right LC-MS experience

1. Degree in chemistry, pharmacology or other related fields.

2. BS / MS with 1 years or a fresh PhD, in a pharmaceutical industry setting with a focus on mass spectrometry

3. Highly motivated, self-driven and results-oriented with excellent communication and presentation skills; capable of working both as a team player and individual contributor

4. Hands-on experience with QQQ (SCIEX), qTOF (Agilent, Bruker, SCIEX) and/or Orbitrap (Thermo) mass spectrometers

5. Experience on routine LC/MS-based bioanalysis to support in vivo PK, TK, and PK/PD studies

The Quantitative, Translational ADME Sciences (QTAS) department is seeking a highly motivated scientist to join the Biologics bioanalysis, characterization, and proteomics group. The main function of this position is to develop and implement LC/MS (liquid chromatography/mass spectrometry)-based bioanalysis and in vitro characterization assays for novel biologics entities. The successful candidate will be experienced in the development, optimization and implementation of novel and routine LC/MS-based bioanalytical methods to support in vivo PK, TK, and PK/PD studies as well as in vitro stability characterization of therapeutic proteins, peptides, and oligonucleotides. The candidate will be responsible for sample preparation, method development, bioanalytical assay operations, data analysis, report generation, and data presentation.


Key tasks and responsibilities:

• Operate and maintain LC/MS instruments to generate high-quality experimental data.

• Perform affinity purification of therapeutic proteins (including but not limited to monoclonal and bispecific antibodies, antibody drug conjugates, antibody-siRNA conjugates, and fusion proteins) from biological matrices.

• Analyze data and maintain detailed, accurate and comprehensive study documentation in electronic laboratory notebooks.

• Facilitate assay optimization and implementation to ensure laboratory capacity and data quality.

• Communicate data interpretation internally and externally.


Qualifications:

Degree in chemistry, pharmacology or other related fields. BS/MS with 1 year of LC-MS (QQQ) experience or a fresh PhD with the right LC-MS experience, in a pharmaceutical industry setting with a focus on mass spectrometry.


• Highly motivated, self-driven and results-oriented with excellent communication and presentation skills; capable of working both as a team player and individual contributor.

• Prior industry experience in drug discovery/development is preferred. In-depth understanding of PK, TK and PK/PD studies and corresponding bioanalytical assays as well as in vitro characterization assays is highly desired.

• Hands-on experience with QQQ (SCIEX), qTOF (Agilent, Bruker, SCIEX) and/or Orbitrap (Thermo) mass spectrometers is highly desired.

• Hands-on experience with automated liquid handling systems is highly desired.

• Hands-on experience with oligonucleotide analysis is highly desired.

Salary : $50 - $55

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