OT Network Engineer (Physical Infrastructure)

xAI; Memphis (TN); On-site; USD 120,000 - 180,000; Full time

Job summary

SpaceXAI is seeking a network engineer to design and operate highly available networks for mission-critical production environments. You will support physical infrastructure networks, drive automation, and coordinate outages for software updates and hardware refreshes.

The role requires hands-on experience with Layer 2/3 networks, OT environments, and rigorous security practices. You will collaborate with cross-functional teams, participate in on-call rotations, and contribute to scalable,

Qualifications

• Bachelor’s degree in computer science, computer engineering, or other STEM discipline and 3+ years of professional network engineering experience.
• 2+ years of hands-on OT networking experience in critical facilities or industrial environments.
• Extensive experience designing and troubleshooting Layer 2/3 networks in latency-sensitive environments.
• Experience with multiple network vendors in production or lab environments.
• Experience with Infrastructure as Code frameworks as a user and contributor.

Responsibilities

• Design and implement highly available networks balancing routing and redundancy.
• Maintain mission data center and site networks per standards; collaborate with adjacent teams.
• Evaluate, procure, deploy network hardware including switches, firewalls, and SD-WAN appliances.
• Develop and scale network automation tooling and deployment frameworks.
• Plan outages with stakeholders for updates and maintenance (weekends/evenings).
• Troubleshoot network issues and publish RCA documentation.
• Provide on-site support during launches and test campaigns; on-call as needed.
• Develop telemetry and monitoring to detect issues before impact.
• Create and update network architecture drawings and data flows.
• Collaborate across teams to identify and resolve systemic issues.

Skills

Network design

OT networking

Cisco/Arista/Juniper

Scripting (Bash/PowerShell/Python)

Terraform/Ansible

GitOps

Communication

Education

Bachelor’s degree in CS/Engineering

5+ years of experience in lieu of degree

Tools

GitOps

Terraform

Ansible

Job description

SpaceXAI’s mission is to create AI systems that can accurately understand the universe and aid humanity in its pursuit of knowledge. Our team is small, highly motivated, and focused on engineering excellence. This organization is for individuals who appreciate challenging themselves and thrive on curiosity. We operate with a flat organizational structure. All employees are expected to be hands‑on and to contribute directly to the company’s mission. Leadership is given to those who show initiative and consistently deliver excellence. Work ethic and strong prioritization skills are important. All employees are expected to have strong communication skills. They should be able to concisely and accurately share knowledge with their teammates.

ABOUT THE ROLE:

SpaceXAI is looking for an exceptional network engineer with experience in mission‑critical or large‑scale production environments to support our supercomputer infrastructure. As a member of the Physical Infrastructure Networking team, you will provide operational and designs services for physical infrastructure networks. The ideal candidate thrives in intense, high flux environments, brings a strong sense of urgency balanced with operational excellence, communicates effectively, and demonstrates high levels of technical acumen.

RESPONSIBILITIES:

• Design and implement highly available networks, carefully balancing various routing and redundancy technologies depending on unique requirements between production and launch.
• Design and maintain mission data center and site networks in accordance with company network standards. Collaborating with adjacent infrastructure and enterprise teams.
• Evaluate, procure, and deploy network hardware including switches, firewalls, multiplexing and SDWAN appliances.
• Contribute to ever maturing network automation tooling; implementing configuration analysis, linting, and scalability into the deployment framework.
• Plan and coordinate network outage windows with stakeholders to perform software updates, hardware refreshes, and general network maintenance (sometimes on weekends and evenings).
• Troubleshoot and resolve network-related issues, publishing root cause analysis (RCA) documentation and hosting retrospective data reviews.
• Provide direct networking support during launch and test campaigns and be on‑call or provide real‑time support as networking responsible engineer during operations.
• Proactively tailors network monitoring to provide ever more valuable operational telemetry with emphasis on issue detection prior to operational impact.
• Continuously create and update network documentation, including architecture overviews, design drawings, and operational procedures.
• Collaborate with cross‑functional teams to proactively identify and resolve potential technical issues with network designs, especially in regards to systemic, cascading failure modes, and superficial redundancy.
• Perform job walks with customers, vendors, and contractors to gather network requirements and create implementation plans.
• Ensure networks are configured and maintained in compliance with industry and cybersecurity standards (e.g., ITAR, ISO, NIST), with particular attention to controls network segmentation and security.
• Design and validate resilient, scalable multi‑site OT network topologies optimized for critical facilities.
• Audit, and enforce zero‑trust firewalls to decouple facility infrastructure from the corporate DMZ.
• Author comprehensive system/network architecture drawings, IP/VLAN schemes, and data flow diagrams.
• Support on‑site system deployment, physical network cutovers, and new site commissioning.

BASIC QUALIFICATIONS:

• Bachelor’s degree in computer science, computer engineering, or other STEM discipline and 3+ years of professional network engineering experience;
  • OR 5+ years of professional network engineering experience in lieu of a degree.
• 2+ years of hands‑on experience in Operational Technology (OT) networking, critical facility infrastructure, industrial automation, or controls engineering.
• Extensive hands‑on experience designing, deploying, supporting, and troubleshooting Layer 2 and Layer 3 networks in latency sensitive and/or industrial environments.
• Functional experience with multiple network vendors either in production or lab environments.
• Experience with GitOps and Infrastructure as Code Frameworks, both as user and contributor.

PREFERRED SKILLS AND EXPERIENCE:

• Strong understanding of the OSI model and network standards.
• Hands‑on experience with Cisco, Arista, and Juniper data center class switches.
• Experience with Wave Division Multiplexing (WDM) and fiber optics infrastructure.
• Extensive knowledge of common enterprise and media protocols.
• Experience with switch port security features, network segmentation, QoS, multicast, and redundancy protocols.
• Familiarity with network monitoring tools and layer 1 testing tools.
• Proficiency in scripting (Bash/PowerShell/Python) and automation frameworks (Terraform, Ansible, etc.).
• Linux and Windows system administration experience professionally or from labs.
• Industry standard certifications such as CCNA or CCNP.
• Experience supporting real‑time systems, industrial control networks, or operational technology (OT) environments in aerospace, defense, energy, oil & gas, or similar high‑reliability industries.
• Excellent communication skills with the ability to communicate with internal/external customers, vendors, and management in both formal and informal situations.

ADDITIONAL REQUIREMENTS:

• Ability to work in tight quarters; physical dexterity is necessary to perform job functions.
• Availability for extended hours and/or weekends as the schedule varies depending on site operational needs; flexibility is required.
• Ability to provide 24x7 on‑call support in emergency situations and participate in an after‑hours on‑call rotation.
• Willingness to travel (up to 20%, including flying to other sites worldwide) and potential time at sea supporting marine systems.
• Ability to lift 30 lbs.
• Ability to work at heights.
• Ability to drive (active valid driver’s license).

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