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Fire Assay Jobs (NOW HIRING)

University of Arizona

Research Technician II

Tucson, AZ · On-site

$16.50 - $20.63/hr

The work will mainly include performing assays for the detection and quantification of biological ... Fire Safety Report In compliance with the Jeanne Clery Campus Safety Act (Clery Act), each year the ...

Western Mesquite Mines

Metallurgist

Brawley, CA

$102K - $117K/yr

Hands-on experience in operating and maintaining a fire and solution assay laboratory, including a variety of laboratory equipment. * Experienced in metallurgical procedures and quality control ...

The Pennsylvania State University

... assays, molecular and cellular phenotyping, imaging, and spectroscopic assays related to ... Annual Fire Safety Report (ASR). The ASR includes crime statistics and institutional policies ...

The Pennsylvania State University

Duties range from assisting with and conducting laboratory assays, including colorimetric plasma ... Annual Fire Safety Report (ASR). The ASR includes crime statistics and institutional policies ...

The Pennsylvania State University

... assay) based assays. The qualified candidate must have experience with measuring and cutting ... Annual Fire Safety Report (ASR). The ASR includes crime statistics and institutional policies ...

The Pennsylvania State University

Duties range from assisting with and conducting laboratory assays, including colorimetric plasma ... Annual Fire Safety Report (ASR). The ASR includes crime statistics and institutional policies ...

The Pennsylvania State University

Performing interaction assays * DNA extraction * PCR * Sequencing BACKGROUND CHECKS/CLEARANCES ... Annual Fire Safety Report (ASR). The ASR includes crime statistics and institutional policies ...

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Fire Assay information

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$31K

$105.6K

$183K

How much do fire assay jobs pay per year?

As of Sep 7, 2026, the average yearly pay for fire assay in the United States is $105,577.00, according to ZipRecruiter salary data. Most workers in this role earn between $78,000.00 and $124,000.00 per year, depending on experience, location, and employer.

What is a fire assay?

A Fire Assay job involves analyzing metal content, primarily gold and silver, in ore samples using high-temperature furnaces and chemical processes. Workers in this role handle sample preparation, flux mixing, fusion, cupellation, and precise measurements to ensure accurate results. Fire assay technicians typically work in mining labs, refineries, or metallurgical facilities. The job requires attention to detail, adherence to safety protocols, and knowledge of laboratory equipment and techniques.

What does a typical workday look like for someone in a fire assay position?

A typical day for a Fire Assay professional involves preparing and analyzing mineral samples through precise lab procedures, including weighing, fluxing, fusing, and cupelling to determine precious metal content. You’ll spend much of your time in a laboratory setting, working with specialized equipment and adhering to strict safety protocols. Collaboration with geologists, metallurgists, and laboratory supervisors is common to ensure quality results and maintain sample traceability. The role often requires careful documentation of results, troubleshooting any irregularities, and occasionally working shifts to support ongoing production schedules.

What are the key skills and qualifications needed to thrive in the fire assay position, and why are they important?

To excel as a Fire Assay professional, a solid background in chemistry, attention to detail, and good mathematical skills are generally required, often supported by a relevant technical diploma or degree. Familiarity with laboratory equipment, fire assay furnaces, and safety protocols is essential, as well as knowledge of industry standards like ISO or ASTM. Precision, problem-solving, and the ability to work both independently and as part of a team are invaluable soft skills in this role. These skills ensure accurate metal analysis, uphold safety standards, and maintain efficiency in high-stakes laboratory environments.

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Fire Assay jobs near you
Infographic showing various Fire Assay job openings in the United States as of August 2026, with employment types broken down into 1% As Needed, 87% Full Time, 10% Part Time, and 2% Contract. Highlights an 97% Physical, 1% Hybrid, and 2% Remote job distribution, with an average salary of $105,577 per year, or $50.8 per hour.

Lead Hydrometallurgy Engineer

Still Bright Inc

Kenilworth, NJ • On-site

$156K/yr

Full-time

Posted 26 days ago

Job description

Reports to: Director of Hydrometallurgy
Close collaboration with: CTO, Electrochemistry, R&D teams
Location: Kenilworth, NJ
Salary starts at: $156,000
Equity participation reflecting the scope and trust of the role
Competitive Benefits
Position Summary
Still Bright is bringing the first viable hydrometallurgical alternative to copper smelting to market at a moment when global copper demand is outpacing supply by historic margins. Our proprietary RACER (Rapid and Complete Electrochemical Reduction) process delivers fast, complete copper extraction while recovering precious and critical co-products, and as a closed-loop system it offers precise control over outputs and radically reduces environmental impact. Backed by top-tier investors including Breakthrough Energy Ventures and Material Impact, the team is moving from pilot execution into the next stages of commercial deployment.
The Lead Hydrometallurgical Engineer owns the hydrometallurgical core of the RACER process and is accountable for the experimental and scale-up program that turns bench-scale chemistry into robust pilot- and demonstration-scale unit operations. This is a senior leadership role for an engineer who sets the technical direction across leaching, separation, electrochemical reduction, co-product recovery, and feedstock diversification-not just executing, but defining the strategy behind experimentation and system scale up, prioritizing the experimental roadmap, and owning the outcomes that feed go/no-go decisions and economic models.
Operating with a high degree of autonomy, the Lead sets objectives in partnership with the Director of Hydrometallurgy and VP Engineering, then drives the work to completion with minimal oversight. The role carries direct responsibility for the technical standard of the team-experimental rigor, data quality, and process-design discipline-and for developing the engineers and technicians who execute alongside them. This is a hands-on leader, equally comfortable at the whiteboard, on the pilot system, and directing third-party engineering firms.
Key Responsibilities
Technical Leadership & Ownership
  • Own the hydrometallurgical experimental program end to end-setting the roadmap for copper extraction, co-product recovery, feedstock diversification, and process integration, and prioritizing campaigns against company objectives.
  • Serve as the senior technical authority on unit-operation performance: leaching, separation, electrochemical reduction, and downstream recovery, including operating-envelope definition and troubleshooting.
  • Translate bench-scale results into scalable pilot- and demonstration-scale process designs, identifying risks early and developing mitigation strategies.
Process Design & Execution
  • Develop and maintain process flowsheets, mass and energy balances, and equipment specifications across pilot and demonstration scale.
  • Specify, source, and commission process equipment and instrumentation in partnership with the controls and pilot teams.
  • Lead characterization for copper and co-product recovery, including XRD, SEM, XRF, QEMSCAN, ICP-MS, and Fire Assay, with particular rigor for complex or impurity-bearing materials.
  • Direct external engineering firms and consultants executing testwork, ensuring outputs reflect the chemistry of our closed-loop system.
Cross-Functional & Decision Support
  • Analyze process data and deliver clear, well-documented technical reports that inform go/no-go decisions, economic models, and reports for government agencies.
  • Collaborate with the CTO, VP of Commercialization, and Director of Hydrometallurgy to ensure the hydromet program aligns with commercial and regulatory directives.
  • Mentor and develop junior engineers and technicians on experimental design, data analysis, and safe laboratory and pilot practice, setting the bar for technical quality across the team.
  • Maintain detailed documentation of research work, methods, and results; uphold laboratory and pilot safety standards. Some travel will be required for feedstock and pilot testing.

Definition of Success
In the first 12 months, success looks like: end-to-end ownership of the hydrometallurgical experimental program, with a prioritized roadmap driving the team's scale-up decisions; reliable, well-documented process data feeding economic models and regulatory reporting; a measurable contribution to the demonstration-unit process design; and visible development of the engineers and technicians on the team.
Qualifications & Experience
Expected Competencies
  • Bachelor's degree in chemical engineering, metallurgical engineering, process engineering, or a related field; or a Master's/Ph.D. with commensurate experience.
  • Minimum of 8 years of experience in process engineering, hydrometallurgy, or a related industrial discipline (or a Ph.D./Master's plus equivalent experience), including a track record of owning programs and leading technical work with limited oversight.
  • Proven experience in research design, execution, and analysis, including translating bench-scale results into pilot-scale performance.
  • Strong command of mass and energy balances, flowsheet development, and equipment specification.
  • Knowledge of relevant metals-extraction industry standards, regulations, and best practices.
  • Excellent communication skills and the ability to lead and collaborate effectively across cross-functional teams.
Strongly Preferred Experience
  • Direct copper or base-metals hydrometallurgy experience, including with complex or impurity-bearing ores.
  • Hands-on pilot-plant or demonstration-scale experience, including commissioning and troubleshooting of non-laboratory equipment at scale.
  • Demonstrated expertise in solid, liquid, and gaseous phase characterization techniques (XRD, SEM, XRF, QEMSCAN, ICP-MS, Fire Assay).
  • Experience integrating multiple unit operations into a continuous or semi-continuous process.
  • Experience directing external engineering firms or managing third-party testwork.
  • Familiarity with process controls, instrumentation, and real-time performance monitoring.
Nice-to-Have
  • Experience with vanadium electrochemistry, sulfide leaching chemistry, or solvent extraction-electrowinning.
  • Exposure to a startup or scaling organization moving from founder-led operations to formal systems.
  • Spanish-language proficiency.

This job description is not intended to be a comprehensive list of the duties and responsibilities of the position. Still Bright provides equal employment opportunities (EEO) to all employees and applicants for employment without regard to race, color, religion, sex, national origin, age, disability or genetics. In addition to federal law requirements, Still Bright complies with applicable state and local laws governing nondiscrimination in employment in every location in which the company has facilities. This policy applies to all terms and conditions of employment, including recruiting, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation and training.
Still Bright expressly prohibits and will never tolerate any form of workplace harassment based on race, color, religion, gender, sexual orientation, gender identity or expression, national origin, age, genetic information, disability, or veteran status. Still Bright especially encourages applicants from historically marginalized communities to join our mission of sustainable metals extraction.

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