Analytical Lab Chemist
- Location
- San Francisco HQ
- Listed
- Today
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
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.
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!
From Mariana Minerals's careers page, first listed on Rolev.ai on November 13, 2026. Rolev.ai is not the employer.
How Rolev.ai helps with this application
Rolev.ai is a job search and application tool for US job seekers. For this Analytical Lab Chemist role at Mariana Minerals, it shows how your resume fits, tailors your resume to the posting, and prepares the application for you to review.
See how you fit
Openings from employer career sites are ranked against your whole resume—and searchable inside Claude, ChatGPT, and Cursor via Rolev.ai MCP.
Tailor without inventing
Every change to your resume is checked against your original. New experience goes in only with your yes—zero fabricated claims.
Draft the full kit
Tailored and Full Match resumes, role-specific cover letters, and answers to employer screening questions are prepared in seconds.
1-Click Extension Autofill
The Chrome extension fills the employer's Greenhouse, Workday, Lever, or Ashby form in 1 click. You review it and press Submit.
Similar roles
- Analytical Lab SpecialistCharm Industrial · Fort Lupton, CO
- Analytical Lab TechnicianFound Industries · Cambridge, MA
- Analytical Laboratory ManagerBeauty Manufacturing Solutions Corp · Coppell, TX
- Analytical Laboratory TechnicianRedwood Materials · McCarran, NV
- Analytical Lab TechnicianRedwood Materials · McCarran, NV
- Analytical Lab TechnicianRedwood Materials · McCarran, NV
More at Mariana Minerals
All Mariana Minerals jobsCommon questions
Where is the Analytical Lab Chemist job at Mariana Minerals located?
This Analytical Lab Chemist position at Mariana Minerals is located in San Francisco HQ. Always check Mariana Minerals's application page for specific state eligibility or relocation policies.
How do I apply for the Analytical Lab Chemist position at Mariana Minerals?
This listing links directly to Mariana Minerals's Ashby application page. You can apply directly on Mariana Minerals's site, or use Rolev.ai to check your resume fit, generate a zero-hallucination tailored resume and cover letter for this posting, and autofill the Ashby application form in 1 click with the Rolev.ai Chrome extension. You always review the form and press Submit yourself.