Mining Project Engineer
Loenbro · Arizona
📍 Gilbert, AZvia greenhousePosted 2026-09-14
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JOB DESCRIPTION
Project Engineer
Project Support — Office and Field
Job Title
Project Engineer
Department
Project Support — Office and Field
Reports To
Project Manager, or the Assistant Project Manager where one is assigned to the scope; day-to-day field coordination through the Superintendent.
FLSA Status
Exempt
Supervises
None. May direct survey crews, technicians, interns or document control staff. Reports to the Project Manager or the assigned Assistant Project Manager.
Travel
Assignment-based; typically assigned full-time to a project site. May require temporary relocation.
Typical Scope
One project. On large or multi-service-line projects, more than one Project Engineer may be assigned by area or discipline.
Position Summary
The Project Manager's technical engine, working both the office and the work face. The Project Engineer owns the documents, the data and the measured record of what was actually built: submittals, RFIs, drawings, field layout and grade control, installed quantities, in-progress quality verification, cost coding, procurement support and the turnover package. The Project Engineer produces the information the Project Manager decides with and the evidence the company gets paid on — and does not make the commercial decisions or direct the crews.
Essential Duties and Responsibilities
Document & Information Control
Own the RFI log: number, issue, track, chase and distribute responses. All RFIs — office-originated and field-originated — flow through this single log. There is no parallel field RFI process.
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 Ensure the field is working from the current revision and that superseded documents are pulled.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; escalate genuine ambiguity as an RFI rather than allowing a field assumption.
Maintain the project files so that any document can be produced on demand for a change, claim or audit.
Field Layout & Measurement
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, cubic yards of concrete, linear feet of pipe, welds made, square feet of liner, feet of cable and conduit.
Provide the measured basis for percent complete, accruals, billings and change order pricing. Pricing from memory or estimate is not acceptable; this measured record is the company's evidence.
Photograph and document changed, differing or concealed conditions the moment they are discovered.
Quality Verification
Perform and document in-progress quality inspections as work is installed, not at turnover.
Coordinate third-party testing across the service lines on the project: compaction and gradation, concrete cylinders and air, weld NDE, bolt inspection, liner seam testing, hydrostatic and pneumatic testing, insulation resistance and loop checks.
Set and enforce hold points before work is covered, backfilled, grouted, insulated or energized.
Identify nonconforming work and route it to the Superintendent for correction; log the nonconformance and verify its closure.
Maintain the QA/QC documentation package: inspection records, test reports, material and mill certifications, weld maps, welder and fusion qualification records.
Cost & Change Support
Set up and maintain the cost code structure with the Project Manager.
Maintain earned-value and percent-complete tracking from measured quantities.
Flag cost code overruns and quantity trends to the Project Manager early — trend reporting is a Project Engineer duty.
Immediately report to the Project Manager and Superintendent any direction, condition or drawing revision that appears to fall outside contracted scope.
Maintain separate cost coding and daily documentation for potential change work from the first hour it is performed.
Procurement Support
Prepare requisitions and purchase orders for Project Manager signature; maintain the procurement log.
Expedite materials and equipment; report delivery risk to the Project Manager and Superintendent before it affects the look-ahead.
Track receiving, storage and material availability against the schedule.
Assemble subcontractor documentation: insurance, bonds, safety qualification, lien waivers.
Reporting & Closeout
Maintain as-built redlines continuously throughout construction — not reconstructed at the end.
Compile the turnover package: as-builts, O&M manuals, warranties, test records and certifications.
Assemble the weekly and monthly project reports from field and cost data; support punch list tracking to closure.
Take and publish project meeting minutes with actions, owners and dates.
Authority and Decision Rights
Purchases up to [$2,500] for project consumables and field or office needs.
Authority to reject nonconforming work technically; the Superintendent directs the correction.
Authority to require a hold point before work is covered, backfilled, grouted, insulated or energized.
No authority to commit the company to a vendor, subcontractor or client. Prepares commitments; the Project Manager signs them.
Unlimited stop-work authority.
Boundary Lines — What This Role Does Not Own
Listed to prevent overlap. Each item below is a responsibility this role supports but does not own; the accountable role is named.
This role does NOT own…
Accountable role
Commercial decisions, change order pricing approval or client negotiation
Project Manager
Direction, assignment or sequencing of craft crews
Superintendent → Foreman
Means and methods — how a task is physically built
Superintendent
Cor
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