Senior Data Systems Engineer (Networking)

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. Diamond Foundry believes in supporting our employees from the workplace to their personal and home life. We provide eligible employees with an opportunity to enroll in a variety of benefit programs, generally including health insurance, flexible spending accounts, retirement savings plans, life and disability insurance programs, and a number of programs that provide for both paid and unpaid time away from work. Perks include employee discounts to VRAI. All benefits offered are available starting your first day. Diamond Foundry is an Equal Opportunity Employer and considers qualified applicants for employment without regard to race, color, creed, religion, national origin, sex, sexual orientation, gender identity and expression, age, disability, veteran status, or any other protected factor under federal, state or local law.