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Analytical Lab Chemist

Mariana Minerals· Plant Operations
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San Francisco HQ$110k - $130kFull-timePosted 5d ago

About the role

Analytical Lab Chemist in San Francisco responsible for sample prep, analytical testing, data integrity, problem-solving on unknown plant samples, and SOP/workflow improvements with room to grow into broader lab leadership as the company expands.

Responsibilities

  • Perform precise sample preparation across various matrices, including weighing, digestion, dilution, and filtration
  • Prepare standards and calibration solutions
  • Operate, calibrate, and troubleshoot analytical equipment, particularly ion chromatography (IC), ICP-OES, ICP-MS, and XRF
  • Record data accurately in LIMS or lab notebooks and review results for integrity
  • Help diagnose analytical problems, including unknown samples from the plant, and work with operations on next steps
  • Write and improve SOPs and lab workflows
  • Support lab technicians and share knowledge across the team
  • Follow all SOPs, chemical hygiene plans, and PPE requirements; manage chemical inventory and waste to regulatory standards

Qualifications

  • Bachelor’s degree in Chemistry, Chemical Engineering, or a related field
  • Lab experience through undergraduate research, internships, co-ops, or work
  • Hands-on ion chromatography (IC) experience strongly preferred
  • Solid wet chemistry skills, including acid digestion and preparing standards
  • Experience with ICP-OES/MS, XRF, AA, GC, HPLC, or UV-Vis, whether in research or coursework
  • A troubleshooter who likes figuring out why an instrument or result isn’t right
  • Familiarity with EPA, ISO, or GLP/GMP standards a plus
  • Mining, metals, or hydrometallurgy exposure a plus
  • Authorized to work in the US without sponsorship

Skills

Required:Ion chromatography (IC)ICP-OES / ICP-MSWet chemistryData recordingProblem solving / troubleshooting
Nice to have:XRF, AA, GC, HPLC, UV-VisSOP development / workflow improvement

Benefits

  • Not specified (benefits not listed in description)
Last updated Oct 21, 2026. Interested? Apply on the company site.

About Mariana Minerals

We to the Future of Minerals, verify the mineral supply chain.

Mariana Minerals is a software-first, vertically integrated minerals company focused on supplying the minerals critical to modern energy, AI, and defense technologies.

software-firstmineralsenergyAIdefense
Company profileWebsite

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