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Gateway Labs · 3 weeks ago

Senior Laboratory Analyst – LC-MS/MS

Tonkawa, OK

Full-time

Onsite

Mid, Senior Level

$25/hr - $40/hr

2+ years exp

Gateway Labs is an ISO 17025-accredited cannabis compliance laboratory seeking a Senior Laboratory Analyst with strong LC-MS/MS pesticides experience. The role involves hands-on production responsibilities, troubleshooting, and improving laboratory processes in a regulated environment.

Information Technology & Services

Responsibilities

Run LC-MS/MS pesticide batches end-to-end: sample prep, sequence setup, system checks, calibration, QC evaluation, data processing, and documentation

Troubleshoot common LC-MS/MS issues impacting batch success (e.g., sensitivity loss, carryover, ion ratios, retention time shifts, inconsistent recoveries, contamination/background, integration consistency)

Perform routine maintenance and performance verification; document all work in an audit-ready manner

Support investigations when QC fails (deviations/nonconformances, root cause, corrective actions) with guidance from management as needed

Collaborate closely with the Laboratory Director and Quality Manager to improve SOP consistency and efficiency

Cross-coverage (preferred): assist with LC-DAD potency and/or provide secondary support on Headspace GC (solvents/terpenes) and ICP-MS (metals), based on your background

Qualification

LC-MS/MS experienceAnalytical testing lab experienceISO 17025 experienceAgilent MassHunterMethod developmentLIMS experienceTraining/mentoring experienceDocumentation habitsCollaboration skills