Is the Senior Systems Administrator role remote?

No — this is an on-site role in San Francisco HQ.

How much experience is required?

At least 5 years of relevant experience for this Senior Systems Administrator role.

Where is the role based?

Mariana Minerals is hiring for this position in San Francisco HQ.

What's the tech stack?

Joblaze extracted these technologies from the posting: Entra ID, Microsoft 365, PowerShell, SharePoint, VPN, firewalls.

What seniority level is this role?

Mariana Minerals targets senior candidates for this position.

Is this full-time or contract?

Full-time for this Senior Systems Administrator role at Mariana Minerals.

Joblaze summary

The Senior Systems Administrator at Mariana Minerals is responsible for hands-on systems administration, infrastructure implementation, and user support across various sites. This role demands expertise in Microsoft 365, Entra ID, and networking fundamentals, along with a proactive approach to building processes and managing hardware lifecycles. Ideal candidates will have over five years of experience in systems and network administration, particularly in environments that require coordination with multiple stakeholders. The position is pivotal in shaping the company's IT infrastructure while supporting its mission in the minerals sector.

Joblaze insights

Listed 9 days ago on Joblaze — tracked directly from Mariana Minerals's career page.
Mariana Minerals has 77 other open roles including Sr. Technical Recruiter , Process Maintenance Technician, Industrial Electrician.
107 active PowerShell roles on Joblaze right now.
51 active VPN roles on Joblaze right now.
43 active Microsoft 365 roles on Joblaze right now.
Typical PowerShell salary we track runs $98,733–$163,250 (median $135,000, across 43 roles).

Quick facts

Is the Senior Systems Administrator role remote?: No — this is an on-site role in San Francisco HQ.
How much experience is required?: At least 5 years of relevant experience for this Senior Systems Administrator role.
Where is the role based?: Mariana Minerals is hiring for this position in San Francisco HQ.
What's the tech stack?: Joblaze extracted these technologies from the posting: Entra ID, Microsoft 365, PowerShell, SharePoint, VPN, firewalls.
What seniority level is this role?: Mariana Minerals targets senior candidates for this position.
Is this full-time or contract?: Full-time for this Senior Systems Administrator role at Mariana Minerals.

From the original posting

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 Systems Administrator to take primary ownership of hands-on systems administration, infrastructure implementation, and day-to-day user support across Mariana's corporate, field, and industrial sites, freeing the Senior IT Manager to focus on architecture, budget, and cross-organizational strategy.

This is a foundational, builder-oriented role rather than a purely operational one. Core capabilities such as device management, centralized authentication, backup and disaster recovery, incident response, and change management are still being established, and this person will help build them, not just run them. Because Mariana operates a live mine, a greenfield construction site, and growing pilot facilities at the same time, the role requires close coordination with Controls/OT engineering, Software Engineering, HR, managed service providers, and on-site stakeholders to deliver urgent requirements while ensuring they support longer-term infrastructure direction.

What You'll Do

Administer Microsoft 365, Entra ID, and centralized authentication/SSO across corporate and field sites

Own the technical layer of SharePoint (permissions, architecture, governance) and manage user access, device provisioning, and onboarding/offboarding with HR.

Maintain software and SaaS license management, including renewals, entitlements, and cost optimization.

Establish end-to-end hardware lifecycle management — procurement, provisioning, tracking, and retirement — across offices, pilot facilities, and field sites.

Configure and support routers, switches, firewalls, VPNs, and wireless networks across a multi-site environment, and drive network monitoring, segmentation, and IT/OT boundary improvements.

Build and document backup/disaster recovery plans, security controls, vulnerability management, and a formal incident response and change management process.

Coordinate and hold accountable managed service providers and consultants

Serve as the primary escalation point for complex user and site support issues, and develop help desk process, documentation, and SLAs.

Mentor junior IT staff and build documentation/training that grows the team's overall technical depth.

Desired Qualifications

5+ years in systems and network administration with end-to-end ownership of infrastructure projects, not just ticket-based support.

Deep hands-on experience with Microsoft 365 and Entra ID, including centralized authentication and SSO configuration.

Strong networking fundamentals — VLANs/segmentation, firewalls, VPNs, wireless, routing/switching — with direct enterprise hardware experience.

Working proficiency in PowerShell or similar scripting for administration and automation.

Experience managing organization-level software/service licensing, including renewals and vendor coordination.

A track record of building processes, systems, or tools from scratch, and comfort operating with incomplete documentation and ambiguity.

Experience coordinating or overseeing managed service providers or outside consultants.

Preferred: experience in industrial/mining/OT-adjacent environments, familiarity with NIST SP 800-171/CMMC/ISO 27001, and experience with Apple/Mac devices and Ubiquiti networking.
This role requires approximately 25% travel to Mariana’s other offices and project sites.

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!