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 Sr. Recruiter to build the teams behind the teams at Mariana Minerals. You'll own full-cycle recruiting across corporate functions, helping us scale a software-first critical minerals company from the ground up.

You'll partner directly with functional leaders to understand what great looks like, find people who have done this at fast-growing companies, and give every candidate an experience that reflects who we are. This is a great fit for someone who loves the full recruiting cycle, builds trust quickly with leaders, and wants to help shape how a company hires.

What You'll Do

• Own full-cycle recruiting for G&A and corporate roles, from intake through offer close

• Partner with hiring managers and executives to define role requirements, hiring plans, and interview processes

• Build creative sourcing strategies for both active and passive candidates across finance, legal, HR, operations, procurement, and other functions

• Run personalized, thoughtful outreach that reflects our mission and stage

• Manage multiple searches at once while keeping a high quality bar

• Coach interviewers and hiring managers on structured interviewing, calibration, and debriefs

• Lead compensation conversations, close candidates, and manage competing offers

• Keep Ashby clean and current, and track pipeline health, time to fill, and other key metrics

• Share market insights on compensation, talent availability, and competitor activity

• Help build and improve recruiting processes, templates, and playbooks as we scale

• Represent Mariana Minerals with a warm, engaging, and transparent candidate experience

• Build diverse, high-quality pipelines across experience levels

• Opportunity to help build our early-career and university recruiting efforts, including internships and new grad hiring, as we grow

Desired Qualifications

• 5-8+ years of full-cycle recruiting experience, with meaningful G&A or corporate recruiting in a high-growth startup or technology company

• Experience recruiting across a range of functions (finance, legal, people, operations, sales, marketing)

• Proven ability to partner with senior leaders and executives

• Strong sourcing skills, including LinkedIn Recruiter, Boolean search, and passive candidate outreachExperience building recruiting processes or playbooks from scratch

• Experience hiring for early-stage finance, legal, or people teams

• Familiarity with seed-to-Series B recruiting environments

• Expert in ATS tools (preference for Ashby)

• Strong written communication and personalized outreach skills

• Strong closing and negotiation skills

• Data-driven approach to pipeline management

• High ownership mindset and comfort with ambiguity

• Passion for building exceptional teams and creating outstanding candidate experiences

Nice to Have

• Experience with campus or early-career recruiting

• Experience in industrial, hardware, energy, mining, or deep tech companies

Our culture is built on four principles:

Everyone Gets Home Safe. We never put speed or cost ahead of people.

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!