Mariana Minerals

3 weeks ago

Mechanical Engineer

✓ Verified Job

Canonical indexed version, validated from employer's careers page.

Source: Company careers pageValidated by: Fursa AI

Last checked: 7 hours agoStatus: Live

Job Summary

Build and deploy first-of-its-kind chemical refining processes and support software for project execution and plant optimization. Own mechanical engineering scopes from concept through design, installation, commissioning, ramp, and handover. Develop equipment specifications and static designs, run FEA, design solids-handling/conveyance systems, manage vendors, and collaborate with multidisciplinary EPC teams to deliver cohesive engineering packages for advanced minerals refining facilities.

Location: San Francisco, Houston

Workplace: Onsite

Employment Type: Full time

Job Function: Field Service, Maintenance & Skilled Trades

Key Responsibilities

•Lead mechanical engineering scopes across project phases from concept/feasibility through detailed design, procurement, fabrication, installation, and commissioning.
•Manage vendors across the equipment lifecycle, including RFQs, technical bid evaluation, drawing review/approval, inspection (ITP/FAT), delivery, and warranty close-out.
•Develop site-wide and area-level plant layouts to optimize equipment arrangement, maintainability access, constructability, safety, and cross-discipline integration.
•Perform static equipment design for stationary equipment and ensure code compliance, including mechanical sizing, wall/shell thickness, and structural load calculations.
•Conduct FEA and design/integrate solids-handling and material-conveyance systems; support construction/commissioning with RFIs, field changes, and start-up assistance.

Pay and Benefits

Salary: USD 140,000 - 175,000 annually

Perks:Equity

Key Requirements

•Bachelor’s degree in Mechanical Engineering or a related engineering discipline.
•Strong understanding of engineering fundamentals and ability to solve challenging problems.
•Experience preparing and reviewing mechanical equipment specifications, vendor documentation, and engineering deliverables for brownfield and greenfield facilities.
•Ability to complete static equipment design of tanks, silos, bins, and pressure vessels with code-based mechanical and structural calculations.
•Proficiency with finite element analysis (FEA) tools and working knowledge of relevant codes/standards such as ASME and API.

Experience:Mining and mineral processingPyrometallurgicalChemical manufacturingBulk-materials handlingIndustrial/process industry

Education:Bachelor's in Mechanical Engineering

Skills:Problem-solvingCross-functional collaborationPrioritizationDeliver high-quality work

Tech Stack:AutoCADFEAFinite element analysisCFDMultiphysicsASMEAPI3D modelsPiping layout

Company Brief

Mariana Minerals

Software-first, vertically integrated minerals company developing extraction, processing, and automation systems to supply critical minerals (lithium and others) for energy, AI, and defense technologies, and building commercial-scale lithium facilities from produced water.

Industry: Mining & Metals

Company Size: Small (11 to 50 employees)

Growth: Early Stage Startup

Funding: Series A

Headquarters: San Francisco, United States

Website LinkedIn Glassdoor

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Mariana Minerals

3 weeks ago

Mechanical Engineer

✓ Verified Job

Canonical indexed version, validated from employer's careers page.

Source: Company careers pageValidated by: Fursa AI

Last checked: 7 hours agoStatus: Live

Job Summary

Location: San Francisco, Houston

Workplace: Onsite

Employment Type: Full time

Job Function: Field Service, Maintenance & Skilled Trades

Key Responsibilities

•Lead mechanical engineering scopes across project phases from concept/feasibility through detailed design, procurement, fabrication, installation, and commissioning.
•Manage vendors across the equipment lifecycle, including RFQs, technical bid evaluation, drawing review/approval, inspection (ITP/FAT), delivery, and warranty close-out.
•Develop site-wide and area-level plant layouts to optimize equipment arrangement, maintainability access, constructability, safety, and cross-discipline integration.
•Perform static equipment design for stationary equipment and ensure code compliance, including mechanical sizing, wall/shell thickness, and structural load calculations.
•Conduct FEA and design/integrate solids-handling and material-conveyance systems; support construction/commissioning with RFIs, field changes, and start-up assistance.

Pay and Benefits

Salary: USD 140,000 - 175,000 annually

Perks:Equity

Key Requirements

•Bachelor’s degree in Mechanical Engineering or a related engineering discipline.
•Strong understanding of engineering fundamentals and ability to solve challenging problems.
•Experience preparing and reviewing mechanical equipment specifications, vendor documentation, and engineering deliverables for brownfield and greenfield facilities.
•Ability to complete static equipment design of tanks, silos, bins, and pressure vessels with code-based mechanical and structural calculations.
•Proficiency with finite element analysis (FEA) tools and working knowledge of relevant codes/standards such as ASME and API.

Experience:Mining and mineral processingPyrometallurgicalChemical manufacturingBulk-materials handlingIndustrial/process industry

Education:Bachelor's in Mechanical Engineering

Skills:Problem-solvingCross-functional collaborationPrioritizationDeliver high-quality work

Tech Stack:AutoCADFEAFinite element analysisCFDMultiphysicsASMEAPI3D modelsPiping layout

Company Brief

Mariana Minerals

Industry: Mining & Metals

Company Size: Small (11 to 50 employees)

Growth: Early Stage Startup

Funding: Series A

Headquarters: San Francisco, United States

Website LinkedIn Glassdoor