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Morrison-Maierle

Designs infrastructure and building systems

Senior Mechanical Process Engineer - Mining

Full-TimePosted on 10/14/2026
$115k - $165k+ Annual bonuses + ESOP ownership contributions + 401(k) match
Senior
Bachelor's
Boise, ID, USA
HybridRelocation assistance is provided; periodic travel is required.
Manufacturing & Process EngineeringProcess Engineering

About the job

Requirements
  • A Professional Engineer license is required, or the ability to obtain licensure within a defined timeframe.
  • A bachelor's degree in civil, mechanical, mining, or petroleum engineering, or an equivalent ABET-accredited engineering program, is required.
  • Progressive experience in mechanical process engineering on mining, oil and gas, water, or wastewater design projects, with demonstrated growth in technical and leadership responsibility.
  • Advanced working knowledge of mechanical process engineering principles and calculations.
  • Ability to manage scope, schedule, budget, and risk across multiple concurrent projects.
  • Experience coordinating multidisciplinary teams and working with clients, contractors, and regulatory agencies.
  • Demonstrated success delivering projects on time, within budget, and with strong quality outcomes.
  • Written and verbal communication skills for client presentations, technical reporting, and team coordination.
  • Problem-solving skills, sound engineering judgment, and ability to make informed decisions under pressure.
  • Client-service mindset and ability to build, maintain, and grow long-term client relationships.
  • Interest in practice development, innovation, and continuous improvement.
  • Valid driver's license and insurable record for periodic travel.
Responsibilities
  • Consult with clients on process optimization needs and understand their vision.
  • Design processes for throughput, size mechanical equipment, and design piped systems.
  • Lead project teams to ensure successful project completion.
  • Manage, mentor, and lead direct-report staff.
  • Create process flow diagrams, block diagrams, piping and instrumentation diagrams, and size project-specific equipment.
  • Draft technical specification sections, equipment lists, and procurement support documents.
  • Develop capital and operating expense estimates.
  • Manage projects in accordance with company standards and client expectations.
  • Establish, maintain, and enhance client relationships.
  • Support business development activities for the Industrial Market sector.
  • Direct computer-aided design personnel on drawing development.
  • Advise clients on best practices for infrastructure development and operations.
Desired Qualifications
  • Project Management Professional certification is a plus, but is not required.

About the company

Morrison-Maierle designs infrastructure and building systems for public agencies, communities and private developers that need to build or improve physical assets. Its work ranges from roads and water treatment facilities to the electrical, mechanical and structural systems inside buildings. Clients hire the firm for planning, engineering design, land surveys and environmental studies, with specialists working together from early project assessments through construction support. Projects include resurfacing Missoula Montana Airport's runway and restoring fish habitat on Idaho's Blackfoot River. Founded in 1945, Morrison-Maierle is headquartered in Helena, Montana.

Company Size

201-500

Company Stage

N/A

Total Funding

N/A

Headquarters

Helena, MT

Founded

1945

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Simplify's Take

What believers are saying

  • Leadership training is recurring: Morrison-Maierle runs Emerging Leaders and Leadership Alliance professional development groups each year.
  • Boise engineers get health-cost support: the electrical engineer posting lists 90% company-paid shared health-plan premiums.
  • Idaho work gained capacity: Morrison-Maierle acquired Boise engineering firm QRS Consulting in April 2026.

What critics are saying

  • Bonuses vary with results: Morrison-Maierle ties incentive compensation to company and individual performance.
  • Health coverage requires budgeting: Morrison-Maierle's listed plan has a high deductible, paired with a health savings account.
  • Visa-dependent candidates face a barrier: the Boise electrical engineer application excludes employer sponsorship.

What makes Morrison-Maierle unique

  • Ownership stays with staff: Morrison-Maierle is entirely owned through an employee stock ownership plan.
  • Funding advice precedes construction: Morrison-Maierle develops grant and loan strategies for infrastructure clients.
  • Survey work reaches underwater: Morrison-Maierle maps riverbeds and lakes to support bridge and natural-resource engineering.

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