Mining Project Engineer – Field & Office Specialist

Loenbro; Phoenix (AZ); On-site; USD 70,000 - 110,000; Full time

Job summary

Loenbro seeks a Project Engineer to support an operations project site in Phoenix, AZ. The role combines office documentation control with field layout, QA/QC, and cost-tracking activities under the Project Manager and Superintendent.

You will own RFIs, submittals, drawings, and as-built records, ensure current revisions are used, and support turnover packages. The position requires 0–6 years' experience and a bachelor's degree in Civil/Mechanical/Mining/Construction Eng or CM, with MSHA/OSHA

Qualifications

• 0–6 years' experience; Bachelor's degree in Civil, Mechanical, Mining or Construction Engineering, or Construction Management, or equivalent surveying and technical background.
• Competent with total station, GPS/GNSS rover and machine control concepts; able to compute earthwork volumes and verify quantities independently.
• Competent in QA/QC documentation across service lines: inspections, test reports, material and mill certifications, weld maps, documentation packages.
• Able to read civil, structural, mechanical, piping and electrical drawings, isometrics, P&IDs and specifications.
• Familiar with the documentation each service line generates: mill and material certifications, WPS/PQR and welder continuity, fusion data logs, concrete batch tickets and cylinder breaks.
• Willing and able to split time between the project office and the work face; this is not a desk-only role.
• Strong document discipline and comfort with high-volume detail under deadline; proficient in project controls and document management systems.
• MSHA Part 46/48 training; valid 5000-23; OSHA 30 preferred; EIT/FE certification preferred; a development path toward Project Manager.

Responsibilities

• Own the RFI log: number, issue, track, chase and distribute responses.
• Own submittals and shop drawings: assemble, transmit, track approval status, and distribute approved copies to the field.
• Own drawing and specification control. Ensure the field is working from the current revision and that superseded documents are pulled.
• Interpret drawings and specifications for the Superintendent and Foremen; elevate genuine ambiguity as an RFI.
• Maintain the project files so that any document can be produced on demand for a change, claim or audit.
• Establish and maintain survey, line and grade control; coordinate third-party survey where used.
• Verify that installed work matches design line, grade, elevation and tolerance before it is covered, backfilled or built upon.
• Measure and log installed quantities as work is put in place — earthwork volumes, concrete, pipe, welds, liner, conduit.
• Provide the measured basis for percent complete, accruals, billings and change order pricing.
• Photograph and document changed, differing or concealed conditions the moment they are discovered.

Skills

Total station

GPS/GNSS rover

Machine control concepts

Earthwork volumes

Education

Bachelor's degree in Civil/Mechanical/Mining/Construction Eng or Construction Management

Tools

MSHA Part 46/48

OSHA 30 preferred

Job description

Loenbro seeks a Project Engineer to support an operations project site in Phoenix, AZ. The role combines office documentation control with field layout, QA/QC, and cost-tracking activities under the Project Manager and Superintendent.

You will own RFIs, submittals, drawings, and as-built records, ensure current revisions are used, and support turnover packages. The position requires 0–6 years' experience and a bachelor's degree in Civil/Mechanical/Mining/Construction Eng or CM, with MSHA/OSHA