People Coordinator

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.

We are hiring a contract People Coordinator (HR + Recruiting) to own interview coordination and support core people operations, freeing up internal bandwidth while ensuring a smooth, high-quality experience for candidates and employees.

In this role, you will manage end-to-end interview logistics, act as the primary point of contact for candidates, and support people operations processes such as onboarding coordination, documentation, and data accuracy. This is a hands‑on role for someone who thrives in fast‑moving environments, communicates clearly, and takes pride in operational excellence.

• Own end‑to‑end interview scheduling across roles, time zones, and interview formats
• Serve as the primary point of contact for candidates, ensuring timely and professional communication
• Coordinate interview logistics, including calendars, interviewer preparation, and follow‑ups
• Maintain accurate and up‑to‑date records in the ATS and related tracking systems
• Partner with recruiters and hiring managers to keep hiring processes moving efficiently
• Support onboarding coordination and people operations workflows as needed
• Create and maintain process documentation, templates, and checklists
• Monitor inboxes, calendars, and scheduling tools with urgency and attention to detail
• Anticipate issues and proactively resolve scheduling or coordination challenges

• 1–3 years of experience in recruiting coordination, HR operations, or a related role
• Hands‑on experience with ATS platforms (Greenhouse, Ashby, or similar) and calendar tools
• Proven ability to manage multiple priorities and high‑volume scheduling with accuracy
• Strong written and verbal communication skills
• High attention to detail and strong follow‑through
• Comfortable operating independently with minimal oversight
• Ability to adapt quickly in a fast‑paced, evolving environment
• Candidate‑first mindset with a focus on professionalism and responsiveness

At Mariana Minerals, you’ll be part of a mission‑driven team reshaping the way critical minerals are sourced and supplied globally. You’ll have the autonomy to make big decisions, the tools to innovate, and a culture that values ownership, smart automation, and collaboration.

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.

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.