Diamond Foundry Inc. is solving the thermal limitation at the foundation of today's most exciting tech industries -- AI & cloud compute, electric-car power electronics, and 5G/6G wireless. We have managed to produce the world's first single-crystal diamond wafers and are now on a mission to put a diamond behind every chip. We are the rare unicorn that has grown fast and profitably. We received $515m in funding and are executing a multi-$B expansion plan for one of the greenest forms of tech manufacturing: converting greenhouse gas into diamond wafers using zero-emission energy.
We are seeking a hands-on Senior Data Systems Engineer (Networking) to join Diamond Foundry’s global IT team, serving as the senior-most network authority across the organization. Based in Zaragoza, this role supports Tier-1 manufacturing and office environments globally, working closely with a predominantly U.S. based IT team to ensure production uptime, enable rapid site growth, and strengthen network resiliency across all regions.

Responsibilities

• Own and operate LAN, WAN, and Wi-Fi infrastructure for Tier-1 manufacturing and office environments.
• Lead network readiness for new site builds and expansions, including the plant in Zaragoza and future Spain facilities.
• Manage routing, switching, firewalls, VPNs, and ISP circuits, including vendor coordination and escalation. Troubleshoot and resolve network-related issues, including VLANs, VPNs, and firewall configurations.
• Establish and maintain network standards, documentation, and operational best practices.
• Act as senior escalation for production-impacting network issues and complex troubleshooting.

Requirements

• 7+ years enterprise network engineering experience; manufacturing or 24/7 environments strongly preferred.
• Strong hands-on experience with Wi-Fi design, VLANs, routing, firewalls, ISPs and VPNs.
• Experience supporting production-critical or high-availability environments.
• Familiarity with platforms such as Cisco (Meraki), CloudFlare, Atlassian,  monitoring tools, Cloud networking (GCP, AWS), and on-prem infrastructure.
• Bilingual fluency in English and Spanish required; German is a plus. Ability to travel between company locations in Spain as needed.