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Xcimer Energy · 9 hours ago

Senior Network Administrator

Denver, CO

Full-time

Onsite

Mid, Senior Level

$115K/yr - $150K/yr

3+ years exp

Xcimer Energy leverages decades of research on Inertial Fusion Energy to deploy fusion power plants aimed at meeting global decarbonization goals. The Senior Network Administrator will be responsible for architecting and governing the company's growing infrastructure, ensuring secure connectivity between digital systems, and maintaining best practices for regulated environments.

EnergyEnergy EfficiencyEnergy Management

No H1B

U.S. Citizen Only

Responsibilities

Own and deliver on the following:

Meraki Cloud and Cisco ISE Ownership and Configuration

Develop, configure, test and deploy scalable Cisco architecture for an ever-growing network of hubs spanning the US and increase the resiliency and redundancy of critical network infrastructure

Architect and implement secure office networks in a regulated environment

Design and deploy policies for device authentication on office networks, VPN for remote workers, and site-to-site connections, including but not limited to device-based network level authentication, secure certificate distribution, remote access, site-to-site VPN, wake-on-LAN, VPN connectivity, and secure VoIP

Provide strategic insight and ownership of continued network expansion involving both large data and operations hubs as well as satellite offices and installations

Assist IT staff with external service integrations involving SSO and endpoint management

Air-gapped (IoT) Network Architecture and Server Management

Collaborate with controls and engineering teams to develop efficient and secure infrastructure for interconnected offline systems and on-premises server stacks

Implement and maintain methodologies for high-density data transactions and exports

Establish access protocols for external maintenance of air-gapped hardware

Ensure Network Security for Regulatory Compliance

Implement required controls and security policies in keeping with nuclear-related government compliance standards (NIST, ITAR, etc.)

Administrate and enforce access control policies involving environments aligned to FedRAMP High controls

Maintain and support audit efforts as it relates to network log retention, alerting and monitoring

User Support and Documentation

Provide Tier 2/3 support for user connectivity and access control issues across the organization

Ensure responsive communication and oversee critical remediation steps during outages and network failures

Maintain documentation for network infrastructure, compliance requirements and export-controlled workflow

Educate technical staff members on best industry practices involving networked systems development and maintenance

Qualification

Cisco-based network infrastructureNetwork security protocolsLarge-scale network architectureMicrosoft Identity ManagementThird-party integrationsServer system architectureMicroservice architectureCommunication skills

Required

Bachelor's degree in Engineering, Information Systems, Computer Science, or equivalent industry experience

3-7+ years of hands-on experience as a Network Administrator

Experience with Cisco-based network infrastructure (Meraki, Site-to-site VPN, MX Firewall, Catalyst Series, ISE, etc.)

Experience with common network protocols (DNS, DHCP, TCP/IP, RDP, HTTP(S), SAML, SSH, IPSec, IEEE 802.1X, etc.)

Experience with Microsoft Identity Management Systems (Entra, Active Directory, Intune)

Fundamental understanding of network security protocols and common endpoint protection methodologies

Experience developing large-scale network architecture in regulated industries (both in parallel with established systems and from-scratch scenarios)

Strong communication skills and experience working in a cross-functional capacity involving numerous industry teams

Must be a U.S. citizen or national, U.S. permanent resident (current Green Card holder), or lawfully admitted into the U.S. as a refugee or granted asylum