Mechanical Engineer

About The Position

The Mechanical Engineer supports the safe, reliable, and efficient design of processing facilities and site infrastructure. The role focuses on the design, maintenance, optimization, and continuous improvement of mechanical systems used in a gold flotation processing facility. This position partners closely with operations, maintenance, reliability, and safety teams to maximize equipment availability, reduce downtime, and ensure compliance with safety, environmental, and regulatory standards.

• Assist in the management of third-party engineering firms performing design services for plant facilities.
• Design, specify, and support mechanical systems and components for gold process plant systems.
• Provide engineering support for crushers, conveyors, pumps, mills, hoists, ventilation systems, and heavy mobile equipment.
• Collaborate with maintenance teams to improve preventive and predictive maintenance strategies.
• Support asset integrity and equipment reliability through root cause analysis, failure investigations, and corrective action plans.
• Review technical drawings including Mechanical layout and detail drawings, Piping drawings including Piping & Instrumentation Diagrams (P&IDs), detail drawings, etc.
• Review technical specifications for applicability to the project.
• Experience in materials selection and calculations for various mineral processing fluids including water, heavy slurry, compressed gases, reagents, and flotation froth.
• Assess equipment performance, wear life, and robustness in harsh operating environments.
• Lead or support plant upgrades, equipment replacements, and capital improvement projects.
• Ensure mechanical designs and modifications comply with mine safety regulations, standards, and site procedures.
• Participate in hazard identification, risk assessments, and safety reviews (e.g., Job Safety Analysis, Management of Change).
• Provide on-site technical support during commissioning, shutdowns, and major maintenance activities.
• Work with vendors and contractors to evaluate equipment, review designs, and resolve technical issues.
• Champion a strong safety culture and lead by example.
• Comply with applicable mining regulations (e.g., MSHA, OSHA, or local mining authorities).

The Mechanical Engineer will be based in Perpetua Resources’ headquarters in Boise, Idaho, with the option to work remotely. Occasional travel will be required to other locations, including Stibnite and Donnelly.

At Perpetua Resources, we are committed to supporting our employees with a comprehensive benefits package that promotes well-being, financial security, and career growth. We believe in fostering a workplace where our team members thrive personally and professionally.

• Comprehensive medical, dental, and vision insurance
• Health savings account (HSA) available with eligible health plan choice
• Pre-tax Flexible Spending Accounts (FSAs) for medical and dependent care expenses
• Employee assistance program (EAP) for mental health and well-being
• Company-paid Life Flight membership for employees/immediate family

• Competitive salary
• Short-Term Incentive Plan (STIP) – Annual performance-based bonus program
• Long-Term Incentive Plan (LTIP) – Equity-based compensation for long-term success
• 401(k) retirement plan with company matching contributions
• Employee Assistance Program

• Paid time off (PTO) and company-recognized holidays
• Parental leave
• Flexible work arrangements (role-dependent)

• Career advancement opportunities within a growing company
• Industry conference attendance and networking opportunities
• Internal training programs and cross-functional learning

• Company-paid professional memberships (e.g., industry associations, networking groups)
• Travel assistance and reimbursement for work-related conferences or site visits
• Commitment to sustainability and community engagement

At Perpetua Resources, we take pride in creating a workplace where employees feel valued and empowered. If you're looking for a career that combines purpose, growth, and a strong team environment, we’d…