Structural Designer

About the company

Mariana Minerals is a software-first, vertically integrated critical minerals company that engineers, builds and operates mines and refineries using its MarianaOS platform.

About this role

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 the minerals supply chain by combining deep industry expertise with advanced software, automation, and data-driven decision-making. ROLE OVERVIEW We are hiring a Structural Steel Designer to configure and lead structural steel drafting and modeling for our capital projects, from conceptual engineering through detailed design. In this role, you will lead the configuration of projects in Tekla (or similar software packages), establishing the databases, libraries, templates, and workflows that standardize how Mariana models and drafts structural steel. You will develop 3D models and produce the general arrangement, fabrication, and erection drawings that take designs from concept to construction-ready. You will define how third-party models, vendor drawings, and EPC deliverables integrate into Mariana’s hosted Tekla environment, ensuring quality and consistency across partners. This is a hands-on design role with the opportunity to shape best practices and tooling as Mariana scales its project delivery.   WHAT YOU’LL DO - Configure new projects in Tekla, including profile and section libraries, connection templates, and drawing styles - Develop and draft structural steel 3D models—framing plans, platforms, stairs, ladders, handrails, and supports - Generate general arrangement (GA), fabrication/shop, and erection drawings - Develop and draft connection details, bolt and weld specifications, and anchor bolt and embed plans - Produce material take-offs, bills of material, and bolt lists - Develop best practices, standards, and workflows for structural steel drafting and modeling - Define requirements for third party structural steel models, vendor drawings, and connection designs to integrate into Mariana’s hosted Tekla environment - Define requirements for third party EPC companies to complete detailed engineering - Coordinate with process, piping, electrical, and civil/structural disciplines to ensure clash-free, constructible designs   WHAT YOU’LL BRING - 5+ years of experience with Teka (or Advance Steel / SDS2) - CAD administration experience configuring projects, libraries, and templates - Strong 2D drafting experience—GA drawings, shop/fabrication drawings, erection drawings, and connection details - Strong 3D modeling experience—structural steel framing, platforms, stairs and handrails, and connection modeling - Working knowledge of structural steel detailing standards and codes (AISC, AWS) - Experience in industrial, mining, minerals processing, chemical, or heavy-industrial environments preferred - Ability to develop standards and workflows and work independently in a fast-moving, first-principles-driven environment - Experience coordinating with multidisciplinary engineering teams and external EPC partners OUR CULTURE IS BUILT ON THREE PRINCIPLES: Extreme Ownership – We take full responsibility for outcomes, relentlessly driving toward solutions. Engineer Out Requirements, then Automate – We simplify, optimize, and then automate for scale. Share Your Legos – We collaborate openly, share knowledge, and empower each other to build bigger, better solutions. Join us as we build the future of responsible mineral sourcing and supply.