p>The Opportunity: Tetra Tech invites you to consider a rewarding opportunity within our geotechnical engineering operations as a Senior to Principal-Level Geotechnical Engineer working from either our Billings, Helena, or Missoula, MT offices, multiple Colorado offices, or Phoenix, AZ office; we currently have a staff of 11 geotechnical engineers in Montana. Please note that Tetra Tech considers various factors in determining pay, including but not limited to: education, relevant and demonstrated work experience in the role, skills, geographic location, qualifications, certifications, and other competencies relevant to the needs of the business.