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.
The Role
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.
What You’ll Do
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
Desired Qualifications
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
Why Join Us?
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.
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.
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.