Sr. Technical Recruiter

San Francisco, CA

About the role

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 Sr. Technical Recruiter to help build world-class engineering and technical teams that will shape the future of industrial automation, AI, and critical minerals.

In this role, you'll partner closely with recruiters, hiring managers, and technical leaders to identify, engage, and attract exceptional talent. You'll play a critical role in developing creative sourcing strategies, uncovering hard-to-find talent, and building long-term relationships with candidates before they're actively looking.

This is an ideal opportunity for someone who enjoys research, thrives on solving difficult hiring challenges, and wants to help build a company from the ground up.

What You'll Do

  • Develop and execute sourcing strategies for highly technical roles across teams

  • Build targeted searches that identify exceptional technical talent across multiple industries and research communities

  • Research, identify, and engage passive candidates through highly personalized outreach

  • Partner closely with recruiters and hiring managers to understand technical requirements, hiring priorities, and market dynamics

  • Translate complex or evolving role requirements into effective sourcing strategies

  • Build and maintain long-term relationships with high-potential candidates

  • Conduct talent mapping, competitive intelligence, and market research to inform hiring strategies

  • Continuously improve sourcing methodologies, tooling, and recruiting processes

  • Track sourcing metrics and provide market insights to recruiting leaders and hiring managers

  • Represent Mariana Minerals through a thoughtful and engaging candidate experience

  • Help shape and strengthen Mariana Minerals' employer brand and technical talent narrative

  • Stay current on sourcing technology, AI-assisted sourcing tools, and emerging channels to reach specialized technical talent

  • Build diverse, high-quality candidate pipelines for hard-to-fill and highly specialized roles

Desired Qualifications

  • 5-8+ years of experience sourcing technical talent in a high-growth startup or technology company

  • Expert in utilizing ATS tools (preference for Ashby)

  • Strong expertise with LinkedIn Recruiter, sourcing tools, Boolean search, Indeed, GitHub, research platforms, and other creative sourcing techniques

  • Demonstrated ability to identify and engage passive candidates for difficult-to-fill technical roles

  • Experience partnering directly with engineering leaders and hiring managers

  • Excellent research skills with the ability to understand technical domains and evaluate technical talent

  • Strong written communication skills with experience crafting personalized candidate outreach

  • Ability to manage multiple searches simultaneously while maintaining a high quality bar

  • Data-driven approach to sourcing strategy and pipeline management

  • Strong closing and negotiating skills

  • High ownership mindset with the ability to thrive in fast-paced, ambiguous environments

  • Passion for building exceptional teams and creating outstanding candidate experiences

Nice to Have

  • Prior experience recruiting for hardware, robotics, industrial automation, or deep tech companies

  • Experience sourcing for niche or emerging technical disciplines (e.g., materials science, controls engineering, applied AI/ML)

  • Familiarity with early-stage or seed-to-Series B recruiting environments

  • Experience building a sourcing function or playbook from scratch

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!

About Mariana Minerals

Mariana Minerals is a software-first, vertically integrated minerals company focused on supplying the minerals critical to modern energy, AI, and defense technologies. It engineers, builds, and operates mines and refineries using its proprietary MarianaOS platform, which integrates capital project execution, refinery operations, and mine management into a single AI and machine learning stack. The company targets domestic U.S. critical mineral supply for sectors facing supply chain vulnerabilities, including copper and lithium.

Other roles at Mariana Minerals

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Job details

Location

San Francisco, CA

Company

NameMariana Minerals
IndustryArtificial Intelligence (AI)
Team Size3

Funding

Total raised

$400M

Last stage

Series A

Investors

a16z

Founders

TC

Turner Caldwell

CEO & Co-Founder

LinkedIn
JL

Juan Lozano

Co-Founder & CTO

BT

Baker Tilney

Co-Founder & CFO

LinkedIn

What happens next.

No applications, no recruiter spam. Just the intro.

01

Confirm the fit

A few questions to make sure this role is the right shape for you. Two minutes.

02

I pitch you to the company

I write the intro, send it to the founder, and handle the back-and-forth.

03

A meeting lands on your calendar

If they’re a yes, I book the chat. You show up — that’s the whole job-hunt.