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.

The role

We are hiring a Senior Safety Engineer to lead ISO 45001 implementation and help our teams solve safety challenges in equipment and facility design. You will establish the system at an initial site, build company policies and procedures that other locations can use, and support integration as Mariana develops new operations.

You will also work closely with Engineering on risk assessments, safety requirements, calculations, and validation. The expected focus is approximately 50% ISO 45001 and OHS management systems, 30% functional safety engineering, and 20% general safety engineering support. You will spend time with the people doing the work and turn technical requirements into solutions they can use.

What You'll Do

• Lead the ISO 45001 gap assessment and implementation plan, with clear priorities, owners, milestones, and evidence of completion.

• Develop practical OHS policies and procedures; involve workers, coach process owners, and build consistent systems that future sites can adopt.

• Coordinate internal audits, compliance evaluations, management reviews, corrective actions, and certification readiness. Maintain usable documents, records, and performance measures.

• Support new locations through design, construction, commissioning, and operations, adapting the company framework to local hazards and requirements.

• Lead or support equipment risk assessments and design reviews for fixed/mobile equipment and other systems, including safeguarding, interlocks, emergency stops, and operating modes.

• Define safety functions and requirements; perform and review assigned performance level or safety integrity level calculations and document their assumptions.

• Develop and execute verification and validation activities, maintain traceability, and assess changes that require revalidation. Arrange specialist analysis and independent review where needed.

• Provide engineering input on facility and fire or life safety questions with qualified design specialists, and support commissioning, hazardous energy isolation, and startup reviews.

• Support incident investigations, field risk assessments, training, and other H&S improvements with site teams and the PSM Engineer. Follow actions through to verified closure.