Oakland, California, United States · On-site
$25/hr–$40/hr
Founded in 2019, Brimstone is an innovative industrial startup with a proprietary, efficient, and deeply decarbonized process for producing Ordinary Portland Cement. We’re now growing our all-star team of sharp, mission-…
Skills: Sample Preparation, Laboratory Testing, Equipment Operation, Data Documentation, SOP Compliance
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The role involves preparing and processing rock and mineral samples using crushing and grinding equipment according to strict SOPs. The technician is responsible for executing laboratory tests, recording data accurately, and maintaining a safe, clean industrial environment.
A high school diploma or GED is required, along with the ability to follow detailed instructions and maintain precise records. Candidates must be physically capable of lifting 40+ pounds and working in an industrial setting with noise and dust.
Founded in 2019, Brimstone is an innovative industrial startup with a proprietary, efficient, and deeply decarbonized process for producing Ordinary Portland Cement. We’re now growing our all-star team of sharp, mission-driven, collaborative professionals as we continue to refine our process and move towards construction of our first production facilities.
Contract (6+ months) | Full-time hours | Potential for extension and/or conversion based on business needs.
We are seeking a reliable and detail-oriented Operations Technician to support daily rock processing, sample preparation, and laboratory testing activities. This role combines hands-on material handling with strict adherence to established Standard Operating Procedures (SOPs) to ensure safe, accurate, and repeatable test results. The ideal candidate is comfortable working in an industrial laboratory environment, performing physically demanding tasks, and maintaining a high level of precision and consistency.
Prepare, process, and handle rock, mineral, and aggregate samples for laboratory testing.
Operate crushing, grinding, screening, and sample preparation equipment according to SOPs.
Execute laboratory tests and analytical procedures exactly as documented without deviation.
Record test results, observations, and operational data accurately and completely.
Transport, lift, and move samples, equipment, and materials throughout the facility.
Maintain a clean, organized, and safe laboratory and processing environment.
Perform routine equipment inspections, cleaning, and basic maintenance activities.
Follow all safety procedures, environmental requirements, and quality control standards.
Communicate test status, equipment issues, and operational concerns to supervisors.
Assist with inventory management, sample tracking, and chain-of-custody documentation as needed.
Ability to decontaminate and decommission equipment(supervised).
High school diploma or GED required.
Ability to follow detailed written and verbal instructions with a high degree of consistency.
Strong attention to detail and commitment to procedural compliance.
Ability to accurately document data and maintain organized records.
Comfortable working in a laboratory, industrial, manufacturing, or processing environment.
Basic mechanical aptitude and ability to learn equipment operation procedures.
Ability to work independently while maintaining productivity and quality standards.
Ability to stand, walk, bend, reach, and perform repetitive motions for extended periods.
Ability to work around dust, noise, moving equipment, and industrial processing machinery while wearing required PPE.
Ability to safely handle rock, mineral, and processed material samples throughout the workday.
The successful candidate will:
Demonstrate exceptional adherence to SOPs and safety protocols.
Maintain consistent, repeatable testing and sample preparation practices.
Take ownership of quality, accuracy, and operational excellence.
Thrive in a physically active, hands-on work environment.
Work effectively as part of a team while remaining dependable and self-motivated.
In compliance with federal law, all persons hired will be required to verify identity and eligibility to work in the United States and to complete the required employment eligibility verification form upon hire.
Brimstone is an equal opportunity employer committed to diversity, equity, inclusion, and belonging in the workplace. We seek to build a unique team of individuals and create an environment where all backgrounds and experiences are respected and appreciated. We credit our success to the values that we uphold, and to the different perspectives each team member brings every day. We would never intentionally discriminate on the basis of race, color, ancestry, religion, national origin, sex, gender identity or expression, sexual orientation, age, marital status, disability status, pregnancy, veteran status, or any other status protected by federal or state law.
We strive to provide an inclusive candidate experience. If there are any reasonable accommodations that you may need during the interview process, please let us know.
Brimstone is reinventing how the world's essential materials are made—and building the Fourth Great Refinery to do it. The Brimstone Rock Refinery® is a patented co-production process that refines a single, globally abundant rock into cement, supplementary cementitious materials (SCM), alumina, steel, aluminum, magnesium, titanium, and more. For the first time ever, these materials can be produced together, cost-effectively and efficiently, through one integrated process—transforming global supply chains and unlocking a new era of material abundance.
Offices: Oakland, CA 94607, US
Brimstone is reinventing how the world's essential materials are made—and building the Fourth Great Refinery to do it. The Brimstone Rock Refinery® is a patented co-production process that refines a single, globally abundant rock into cement, supplementary cementitious materials (SCM), alumina, steel, aluminum, magnesium, titanium, and more. For the first time ever, these materials can be produced together, cost-effectively and efficiently, through one integrated process—transforming global supply chains and unlocking a new era of material abundance.
Offices: Oakland, CA 94607, US
