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Sr. Estimator

Mariana Minerals· Project & Construction Management
Apply on company site
Houston, TXFull-timePosted 6mo ago

About the role

Senior estimator leading cost estimation efforts for mining and mineral processing projects, developing accurate, competitive, and timely cost estimates to support decision-making and project success.

Responsibilities

  • Lead the preparation of detailed cost estimates for mining, processing, and infrastructure projects
  • Analyze drawings, specifications, proposals, and other documentation to prepare time, cost, materials, and labor estimate
  • Utilize RSMeans data and tools to develop accurate and benchmarked cost estimates
  • Collaborate with engineering, procurement, and project management teams to ensure accurate and comprehensive estimate
  • Develop and maintain cost databases, benchmarks, and estimating tools
  • Identify project risks and opportunities, providing mitigation strategies
  • Review and validate subcontractor and supplier quotes
  • Participate in bid reviews, value engineering, and project planning sessions
  • Provide ongoing cost analysis and support throughout the project lifecycle
  • Mentor junior estimators and contribute to continuous improvement initiatives
  • Support the PCM and Software Engineering teams in developing operating systems and tools to automate estimating processes

Qualifications

  • 7+ years of experience in estimating within mining, heavy industrial, or construction environments
  • Strong knowledge of mining operations, materials, and equipment
  • Proficiency in RSMeans
  • Advanced skills in Excel and data analysis
  • Ability to interpret technical drawings and specifications
  • Strong analytical, organizational, and communication skills
  • Availability to travel 20% of the time to site or Mariana Minerals offices

Skills

Required:EstimatingRSMeansExcel and Data AnalysisTechnical Drawing InterpretationCommunication and Collaboration
Last updated Sep 9, 2026. Interested? Apply on the company site.

About Mariana Minerals

We to the Future of Minerals, verify the mineral supply chain.

Mariana Minerals is a software-first, vertically integrated minerals company focused on supplying the minerals critical to modern energy, AI, and defense technologies.

software-firstmineralsenergyAIdefense
Company profileWebsite

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