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Added 3 hours ago
MM
Analytical Lab Chemist
Mariana Minerals
San Francisco, CA
- $110,000 to $130,000 USD / year
- Full-time, Monday–Friday, day shift, based at our San Francisco HQ
Added 1 day ago
Regional Environmental Manager
Mariana Minerals
Moab, UT
- Strong technical writing skills—must have authored or managed Plans of Operations, EIS chapters, or major permit applications
Added 2 days ago
Maintenance Technician – Electrical & Controls
Mariana Minerals
Joaquin, TX
- 12-hour shifts, 6 AM–6 PM · - A night shift option will be added in Spring 2027
Added 3 days ago
MM
Procurement Manager, Construction
Mariana Minerals
San Francisco, CA · Houston, TX · Moab, UT · Ann Arbor, MI
- $130,000 to $180,000 USD / year
Added 3 days ago
MM
Staff Instrumentation and Controls Engineer
Mariana Minerals
San Francisco, CA · Houston, TX · Moab, UT · Ann Arbor, MI
- $150,000 to $200,000 USD / year
Added 6 days ago
Lab Technician
Mariana Minerals
Moab, UT
Schedule 7 days on / 7 days off, working 12-hour shifts
Added 6 days ago
MM
Recruiting Coordinator
Mariana Minerals
San Francisco, CA
- $63,000 to $111,000 USD / year
Added 6 days ago
Recruiting Coordinator
Mariana Minerals
Houston, TX
Added 13 days ago
Workplace Manager
Mariana Minerals
Houston, TX
Added 14 days ago
Stacking/Sizer Operator
Mariana Minerals
Moab, UT
· Must possess or be able to obtain a valid driver’s license
Added 14 days ago
MM
R&D Technician
Mariana Minerals
San Francisco, CA
- $40 to $47 USD / hour
- Valid driver's license required
Added 17 days ago
MM
Senior/Staff Chemical Process Engineer
Mariana Minerals
San Francisco, CA
- $140,000 to $175,000 USD / year
Added 17 days ago
Process Engineer
Mariana Minerals
Moab, UT
Added 20 days ago
Associate, Corporate Development
Mariana Minerals
Houston, TX
Added 20 days ago
Manager, Corporate Development
Mariana Minerals
Houston, TX
Added 20 days ago
Process Maintenance Technician
Mariana Minerals
Moab, UT
- Schedule: 7 days on / 7 days off, 12-hour shifts, rotating between days and nights
Added 20 days ago
Maintenance Technician Trainee
Mariana Minerals
Moab, UT
Added 21 days ago
Mobile Maintenance Supervisor
Mariana Minerals
Moab, UT
- Valid driver’s license required · - Schedule: 7 days on / 7 days off, working 12-hour shifts
Added 22 days ago
MM
Staff Process Modeling Engineer
Mariana Minerals
Houston, TX
- $100,000 to $160,000 USD / year
Added 22 days ago
MM
Commercial Manager, Energy & Utilities
Mariana Minerals
San Francisco, CA
- $130,000 to $190,000 USD / year
Added 22 days ago
MM
Procurement Manager, Mobile Equipment
Mariana Minerals
San Francisco, CA
- $130,000 to $190,000 USD / year
Added 22 days ago
Construction & Commissioning Quality Engineer
Mariana Minerals
Houston, TX
Added 22 days ago
MM
Sr. Cost Control Engineer
Mariana Minerals
Houston, TX · San Francisco, CA
- $140,000 to $180,000 USD / year
Added 22 days ago
MM
Document Control Coordinator
Mariana Minerals
Houston, TX · San Francisco, CA
- $76,000 to $115,000 USD / year
Added 23 days ago
Site Superintendent
Mariana Minerals
Houston, TX

Mariana Minerals

Analytical Lab Chemist

San Francisco, CA, United States

$110,000 to $130,000 USD / year

Apply on jobs.ashbyhq.com About employer

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Job details

Pay: $110,000 to $130,000 USD / year
Posting language: English
Posted: Nov 12, 2026

Original job description

ABOUT MARIANA MINERALS

Mariana Minerals is a software-first, vertically integrated minerals company on a mission to supply the critical minerals powering modern energy, AI, and defense technologies. We’re reimagining the minerals supply chain by combining deep industry expertise with advanced software, automation, and data-driven decision-making.

Join our laboratory team as an Analytical Lab Chemist. This senior-level role focuses on high-quality sample preparation and routine analytical testing, with a particular emphasis on ion chromatography (IC). The ideal candidate is a disciplined scientist who prioritizes lab safety, enjoys hands-on analytical work, and has a solid understanding of IC, spectroscopic instrumentation and other chemical analysis equipment.

Key Responsibilities

Operate, calibrate and troubleshoot analytical instruments, particularly ion chromatography (IC), along with ICP-OES/MS and XRF
Perform precise sample preparation across various matrices, including weighing, digestion, dilution and filtration, with zero cross-contamination
Prepare standards and calibration solutions, and run routine analytical testing with accurate, reliable results
Record observations and raw data accurately in LIMS or lab notebooks, and review results for integrity
Flag instrument or data issues early and help work out the cause
Keep a clean, organized workspace and manage chemical inventory and waste disposal to regulatory standards
Follow all SOPs, chemical hygiene plans and PPE requirements to keep the lab safe

Required Qualifications

Associate or bachelor’s degree in Chemistry, Biochemistry or a closely related scientific field
Hands-on ion chromatography (IC) experience strongly preferred
Demonstrated proficiency in wet chemistry techniques (pipetting, titration, acid digestion)
Familiarity with the principles of analytical instrumentation
Hands-on experience or academic exposure to titration, Flame AA, ICP-OES/MS or XRF is a plus
Knowledge of EPA, ISO or GLP/GMP standards
Strong attention to detail, excellent time management, a collaborative approach and a willingness to learn new skills

Schedule

Full-time, Monday–Friday, day shift, based at our San Francisco HQ

Working Environment & Physical Requirements

Laboratory setting with regular handling of acids, solvents, and other hazardous chemicals
Required PPE includes lab coat, safety glasses, gloves, and closed-toe shoes
Ability to stand at a lab bench for extended periods
Ability to lift up to 25 lbs
Fine motor skills for precise pipetting, weighing, and instrument handling

OUR CULTURE IS BUILT ON FOUR PRINCIPLES:

Everyone Gets Home Safe. We never put speed or cost ahead of people.

Extreme Ownership. We take full responsibility for outcomes, relentlessly driving toward solutions.

Engineer Out Requirements, then Automate. We simplify, optimize, and then automate for scale.

Share Your Legos. We collaborate openly, share knowledge, and empower each other to build bigger, better solutions.

Join us as we build the future of responsible mineral sourcing and supply!

Apply on jobs.ashbyhq.com About employer

More about this job

Skills

Good laboratory practices
Good manufacturing practices
Attention to detail
Time management
Heavy lifting

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