Senior Analytical Scientist

Sr Analytical Scientist

The Sr Analytical Scientist leads unknown compound identification using advanced mass spectrometry techniques to support pharmaceutical, medical device, and extractables and leachables (E&L) studies. This role requires deep expertise in LC/MS, strong knowledge of regulatory expectations, and the ability to provide technical leadership in solving complex analytical challenges within a cGMP/GLP testing environment focused on improving public health.

Responsibilities

• Lead unknown peak identification activities using LC/MS, LC‑MS/MS, and high‑resolution mass spectrometry (LC‑HRMS) to support pharmaceutical, medical device, and E&L studies.
• Operate, maintain, and troubleshoot LC/MS and high‑resolution MS instruments, ensuring reliable performance and high‑quality data output.
• Interpret complex mass spectrometry data, including fragmentation patterns and structural information, to identify and confirm unknown compounds.
• Investigate and resolve analytical challenges related to methods, instrumentation, and complex sample matrices, proposing and implementing effective solutions.
• Prepare and review detailed technical reports, study protocols, and regulatory documentation in alignment with relevant guidelines such as ISO‑18 and USP /.
• Collaborate closely with cross‑functional teams, including quality assurance, to communicate analytical results and provide expert technical guidance.
• Mentor and train junior scientists in mass spectrometry techniques, data interpretation, and unknown identification strategies.
• Stay current with emerging analytical technologies, methodologies, and regulatory trends, and drive continuous improvement in laboratory practices and workflows.
• Support cGMP/GLP testing activities in toxicology, biocompatibility, pharmacology, analytical chemistry, and microbiology by providing advanced analytical expertise.
• Contribute to a mission‑driven culture focused on improving public health through high‑quality scientific work.

Work Environment

This is an onsite role working in a cGMP/GLP laboratory that supports toxicology, biocompatibility, pharmacology, analytical chemistry, and microbiology testing for pharmaceutical, biotech, and medical device clients. The position follows standard daytime hours, Monday through Friday, 8:30 a.m. to 5:00 p.m. You will work with advanced LC/MS, LC‑MS/MS, high‑resolution MS (LC‑HRMS), and related analytical instrumentation, supported by software platforms such as Sciex OS and Thermo/Chromeleon.

The environment emphasizes scientific rigor, regulatory compliance, and collaboration, with a strong culture centered on improving public health through high‑quality analytical science.

Job Type & Location

This is a Contract to Hire position based out of Hercules, CA.

Pay and Benefits

The pay range for this position is $55.00 - $64.90/hr.

Eligibility requirements apply to some benefits and may depend on your job classification and length of employment. Benefits are subject to change and may be subject to specific elections, plan, or program terms. If eligible, the benefits available for this temporary role may include the following:

• Medical, dental & vision
• Critical Illness, Accident, and Hospital
• 401(k) Retirement Plan – Pre-tax and Roth post-tax contributions available
• Life Insurance (Voluntary Life & AD&D for the employee and dependents)
• Short and long-term disability
• Health Spending Account (HSA)
• Transportation benefits
• Employee Assistance Program
• Time Off/Leave (PTO, Vacation or Sick Leave)

Workplace Type

This is a fully onsite position in Hercules, CA.

Final date to receive applications

This position is anticipated to close on Jul 2, 2026.