Project Engineer

About Mariana Minerals

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

We’re reimagining how minerals are sourced, refined, and optimized by combining deep industrial expertise with software, automation, and data-driven decision-making. Join us as we build the future of responsible mineral sourcing and supply.

Role Overview

Mariana Minerals is looking for a highly motivated Project Engineer to work on building the critical minerals supply chain to support the world’s energy transition.

In this role, you will help manage the flow of information across engineering, procurement, construction, and operations teams. You will develop and maintain project workflows, support document control processes, track engineering and vendor deliverables, coordinate cross-discipline reviews, manage RFIs, and build dashboards that provide real-time project visibility.

What You’ll Do

• Manage document and deliverable flows across internal engineering teams, external engineering partners, vendors, and construction stakeholders
• Develop, maintain, and run review/approval workflows for engineering documents, vendor submittals, and project deliverables
• Coordinate cross-discipline engineering reviews, ensuring timely engagement from process, mechanical, structural, piping, electrical, instrumentation, and construction teams
• Track engineering deliverables and action items, maintaining up-to-date logs, trackers, and registers to ensure alignment with the project schedule
• Manage Requests for Information (RFIs), ensuring timely routing, follow-up, closure, and documentation
• Support the preparation of project dashboards, KPIs, and progress reports for internal leadership and external partners
• Assist in developing and maintaining project documentation standards, naming conventions, and workflows to ensure consistency across the project
• Support interface management, helping resolve gaps and issues between disciplines, vendors, and EPC partners
• Participate in model reviews, design reviews, and coordination meetings, capturing action items and ensuring follow-through
• Assist in building and improving digital project-execution tools, contributing feedback to help automate workflows and enhance project visibility
• Support procurement and construction teams, including tracking vendor data, coordinating submittal reviews, and managing deliverable exchanges
  
  

What You’ll Bring

• Bachelor’s degree in Engineering (Chemical, Mechanical, Civil, Industrial, or related discipline)
• 0–5 years of relevant experience in project engineering, project management, EPC/EPCM environments, or industrial project support roles
• Familiarity with EPC project workflows, including document control, design reviews, RFI management, vendor coordination, and multidisciplinary engineering processes
• Proficiency in project-engineering tools, such as document-management systems (Aconex, Procore, Asite, SharePoint, etc.), dashboards, spreadsheets, and workflow tools
• Experience building dashboards or trackers (Excel, Power BI, Smartsheet, Notion, or similar)
• Strong communication and coordination skills, with the ability to interface across disciplines and follow up effectively with teammates and external partners
• Ability to work in a fast-paced, first-principles-oriented environment, managing competing priorities under schedule pressure
  
  

Mariana is an Equal Opportunity Employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. We do not discriminate on the basis of race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, veteran status, or any other protected status.

Compensation Range: $100K - $160K