The role - what you'll doBarr is seeking a senior-level geochemist to join our growing geochemical practice across the Midwest and western United States as well as western Canada. This role can be based in any of our current offices on a part-time or full-time basis. In this role, you will lead and support projects involving tailings and mine waste, coal combustion residuals (CCR), legacy contamination, and other complex, multimedia environments. This role combines advanced geochemical modeling and material characterization expertise with project leadership and client engagement. You will provide technical direction on conceptual site models and assessment of geochemical systems, oversee data collection and analysis, lead predictive modeling efforts, and contribute to strategic decision-making related to acid rock drainage, metal leaching, mineral solubility, and water quality. In addition to technical leadership, this position includes mentoring staff, collaborating with clients and regulators, and supporting the continued growth of Barr's geochemical practice. This role also includes a strong client service and business development component, including relationship development, proposal support, and identifying new project opportunities. This role offers the opportunity to shape the direction of Barr's geochemical services and contribute to high-visibility projects across North America. The ideal candidate for this position is a strategic and collaborative consultant who combines deep technical expertise with strong leadership and client presence. They communicate complex geochemical concepts and modeling results clearly and confidently to clients, regulators, and multidisciplinary teams. They demonstrate sound professional judgment, provide high-level technical review, and mentor developing staff to strengthen team capability. Organized and proactive, they effectively manage scopes, schedules, and budgets while maintaining technical excellence. This individual is relationship-driven and business-minded, with the ability to build trust, identify opportunities, and contribute meaningfully to proposals and service growth. They are energized by advancing the practice through knowledge sharing, innovation, and creative problem solving. Above all, they value collaboration, integrity, and delivering practical solutions to complex environmental challenges. Your impact - key responsibilities Technical knowledge: apply advanced geochemical expertise to lead investigations and prediction of future conditions involving mine waste, tailings, pit lakes, coal combustion residuals (CCR), and legacy contamination. Develop and interpret thermodynamic equilibrium and kinetic-controlled reaction models using PHREEQC; collaborate with hydrology and hydrogeologic models to simulate reactive transport; design and oversee material characterization and field and laboratory testing programs; and evaluate acid rock drainage, metal leaching, mineral solubility, and water chemistry to support predictive and defensible decision-making.

Project management:

develop discipline-specific scopes of work, schedules, and budgets, and provide oversight of geochemical work packages within multidisciplinary projects. Help ensure technical quality, risk management, and alignment with project objectives while supporting overall project execution and client expectations.

Problem solving:

evaluate complex geochemical systems, datasets, and regulatory frameworks to develop practical, science-based solutions. Integrate modeling results, field data, and uncertainty analysis to guide strategy development and long-term site management decisions.

Communication:

prepare clear, defensible technical documentation and effectively communicate complex findings and uncertainties to clients, regulators, and project stakeholders. Represent the geochemistry discipline in meetings, technical discussions, and professional forums.

Interpersonal savvy:

collaborate with multidisciplinary teams to align geochemical strategy with broader project goals. Build strong, trust-based relationships with clients and regulatory agencies while fostering a culture of mentorship, accountability, and technical excellence within the team.

Leadership and practice development:

provide senior technical review and guidance, mentor developing staff, and contribute to advancing the geochemical practice through knowledge sharing, innovation, and service development.

Business development:

support the growth of the geochemical practice by strengthening client relationships, contributing to proposals and presentations, identifying new opportunities, and helping position Barr as a leader in applied environmental geochemistry. About the opportunity

Hybrid:

a hybrid work arrangement may be considered for this position. A hybrid work arrangement refers to splitting time worked between a Barr office and a home office. This position can be based out of Barr's Ann Arbor or Grand Rapids, Michigan; Duluth, Hibbing, or Minneapolis, Minnesota; Reno, Nevada; Denver, Colorado; or Salt Lake City, Utah, offices.

Travel expectation:

willingness to travel and periodically adjust personal schedule to meet project needs. About you - required core competencies

Education:

master's degree in geochemistry or a closely related discipline.

Experience:

10 or more years of practical experience in environmental or applied geochemistry. Strong knowledge of low-temperature aqueous geochemical systems, environmental geochemistry, mineral weathering processes, and equilibrium and... For full info follow application link. Barr is proud to be an affirmative action/equal opportunity employer. All qualified applicants will receive consideration for employment without regard to sex, race, color, religion, gender identity, sexual orientation, age, national origin, disability, protected veteran status, or any other lawfully protected status.