Senior Geochemist

GSI Environmental Inc.; Missoula, Helena (MT, MT); Hybride; USD 120 000 - 190 000; Plein temps

Avantages offerts par ce poste

Employee ownership opportunity

Competitive salary and bonuses

Flexible work environment with remote

Conferences, presentations, and pubs

Collaborative atmosphere

Résumé du poste

GSI Environmental Inc. in Missoula, MT seeks a Senior Geochemist to lead environmental geochemistry programs for hard rock and industrial mineral projects across the U.S. and internationally.

The role covers study design, data interpretation, modeling, and reporting, coordinating with hydrogeologists, engineers, and permitting specialists. The successful candidate will manage geochemical programs, develop defensible predictions for mine water quality, and mentor staff while contributing to

Qualifications

• MS or PhD in geochemistry, geology, hydrogeology, environmental engineering, environmental science, or closely related field; exceptional candidates with a BS and substantial relevant experience will be considered.
• 10+ years of relevant professional experience, with strong preference for mining geochemistry or environmental consulting experience.
• Experience in mine waste characterization, acid rock drainage/metal leaching assessment, and mine water quality prediction.
• Experience designing, managing, and interpreting laboratory and field geochemistry programs.
• Strong technical writing, data interpretation, and presentation skills.
• Experience managing technical scopes, schedules, budgets, and multidisciplinary project interfaces.
• Ability to work independently while contributing to cross-disciplinary teams.

Responsabilités

• Lead or support geochemical characterization programs for waste rock, tailings, ore, pit-wall materials, soils, sediments, and mine water.
• Design and interpret static and kinetic tests, including acid-base accounting, net acid generation, humidity cells, column tests, leach testing, mineralogy, and related lab programs.
• Evaluate acid rock drainage and metal leaching and develop source term and mine water quality predictions for permitting, design, operations, and closure.
• Develop, apply, and review geochemical models using PHREEQC, Geochemist’s Workbench, GoldSim, MIN3P, or comparable tools.
• Integrate geochemical results with hydrogeologic and engineering analyses to evaluate seepage and closure scenarios.
• Plan and oversee field sampling programs and coordinate labs, vendors, subcontractors, and QA/QC activities.
• Prepare and review technical reports, memoranda, permit support documents, work plans, proposals, and presentations.
• Communicate findings and uncertainty clearly to clients, regulators, project managers, and multidisciplinary teams.
• Manage technical tasks and projects, including scope, schedule, budget, quality, and staff coordination.
• Mentor junior and mid-level staff and contribute to technical standards and training.

Connaissances

Geochemistry

Project management

Data interpretation

Technical writing

Field sampling

Laboratory programs

Mentoring

Client communication

Formation

MS or PhD in geochemistry

Outils

PHREEQC

Geochemist's Workbench

GoldSim

MIN3P

Description du poste

Job Details: Job Location: Missoula, MT - Missoula, MT 59802, Position Type: Full Time, Education Level: Graduate Degree, GSI Environmental is seeking a Senior Geochemist to join our growing mining practice. This position offers the opportunity to work with experienced professionals on technically challenging mining projects involving mine waste, mine water, permitting, operations, and closure.

The successful candidate will provide technical leadership for environmental geochemistry programs supporting hard rock and industrial mineral projects across the U.S. and internationally. The role will include study design, geochemical characterization, interpretation of complex datasets, mine water quality prediction, geochemical modeling, technical reporting, and close collaboration with hydrogeologists, engineers, and permitting specialists.

Responsibilities

• Lead or support geochemical characterization programs for waste rock, tailings, ore, pit-wall materials, soils, sediments, and mine water.
• Design and interpret static and kinetic testing programs, including acid-base accounting, net acid generation, humidity cells, column tests, leach testing, mineralogy, and related laboratory programs.
• Evaluate acid rock drainage and metal leaching potential and develop defensible source term and mine water quality predictions for permitting, design, operations, and closure.
• Develop, apply, and/or review geochemical and hydrogeochemical models using PHREEQC, Geochemist’s Workbench, GoldSim, MIN3P, or comparable tools, as appropriate to project needs.
• Integrate geochemical results with hydrogeologic, hydrologic, water balance, and engineering analyses to evaluate seepage, contact water, pit lakes, tailings, waste rock facilities, and closure scenarios.
• Plan and oversee field sampling programs and coordinate laboratories, vendors, subcontractors, and QA/QC activities.
• Prepare and review technical reports, memoranda, permit support documents, work plans, proposals, and presentations.
• Communicate technical findings and uncertainty clearly to clients, regulators, project managers, and multidisciplinary teams.
• Manage technical tasks and projects, including scope, schedule, budget, quality, and staff coordination.
• Mentor junior and mid-level staff and contribute to technical standards, training, and practice growth within GSI’s.
• Support proposal development, client relationships, conference participation, and other activities that help grow GSI’s mining practice.

Qualifications: Qualifications

• M.S. or Ph.D. in geochemistry, geology, hydrogeology, environmental engineering, environmental science, or a closely related discipline; exceptional candidates with a B.S. and substantial directly relevant experience will also be considered.
• 10 or more years of relevant professional experience, with strong preference for mining geochemistry or environmental consulting experience.
• Demonstrated expertise in mine waste characterization, acid rock drainage/metal leaching assessment, and mine water quality prediction.
• Experience designing, managing, and interpreting laboratory and field geochemistry programs.
• Strong technical writing, data interpretation, and presentation skills.
• Experience managing technical scopes, schedules, budgets, and multidisciplinary project interfaces.
• Ability to work independently while contributing effectively to cross disciplinary teams.
• Valid driver’s license and ability to travel domestically and occasionally internationally for project needs.

Job Perks

• Opportunities for ownership in a growing employee-owned company.
• Competitive salary and benefits with attractive year-end bonuses.
• Flexible work environment with potential for remote work.
• Participation in conferences, technical presentations, and publications.
• Collaborative atmosphere.

The base salary for this position will be determined by the candidate’s geographic location, education, relevant degree, related experience, and overall qualifications.