Sr. Network Engineer
SB EnergyAbout the role
Do you want to work with high-caliber professionals in a dynamic and growing company? Are you entrepreneurial, hard-working, and collegial? Join us at SB Energy, a leading infrastructure company backed by SoftBank Group and Ares Infrastructure, pairing cutting-edge innovation with best-in-class execution. Our mission is to deliver reliable and secure data center and power infrastructure to strengthen America's future.
Founded in 2019, SB Energy is a SoftBank Group company headquartered in Redwood City, California. In 2026, SoftBank Group and OpenAI announced a $1 billion investment to support SB Energy as their leading development and execution partner for data center campuses, while Ares Infrastructure continues its long-standing support of the company's growth. SB Energy develops, builds, owns, and operates some of the largest and most technically advanced energy and data center infrastructure projects in the United States. Since its founding, the company has rapidly grown into a top-tier integrated platform with more than 3 gigawatts (GW) in operation and a multi-GW pipeline of energy and data center infrastructure nationwide.
SB Energy also leverages a strong culture of innovation to identify and integrate new technologies into its projects, including its AI-based digital platform, delivering energy infrastructure that is local, reliable, and matched to load. We are building the energy and infrastructure future—today.
Come join us in accelerating the energy and infrastructure transition!
Title : Sr. Network Engineer
Basic Function
The Engineering and Innovation (E&I) team at SB Energy provides technical insights and assists decision-making across all life cycle phases of renewable projects, from development, construction, and to operations and maintenance. The Innovation program ideates, evaluates, demonstrates, and deploys at-scale first-of-a-kind technologies. The Senior Network Engineering role will be responsible for designing, implementing, maintain, and supporting SB Energy’s growing network infrastructure, which comprises of SB Energy’s utility scale power plants, remote operations center, and data center infrastructure. Additionally, this role will implement and maintain SB Energy’s cybersecurity plan.
The Sr. Network Engineer will:
- Own the end-to-end OT network architecture from development and detailed design through construction, commissioning, operations, upgrades, and asset handover.
- Design resilient, segmented power plant and substation networks, including LAN/WAN, VLANs and VRFs, routing and switching, firewalls and DMZs, redundant paths, fiber and telecom circuits, wireless or cellular links, and secure cloud or remote operations connectivity.
- Find solutions for telecomm/fiber to remote sites utilizing wireless or satellite backup communications
- Create and maintain high- and low-level designs, network topology diagrams, IP address and VLAN plans, port/protocol matrices, firewall rule bases, equipment standards, bills of material, fiber schedules, test plans, and as-built records.
- Lead equipment selection, configuration standards, capacity planning, procurement support, factory/site acceptance testing, commissioning, failover testing, and operational handoff.
- Review EPC, OEM, integrator, and subcontractor designs and configurations; resolve technical gaps and verify that installations meet reliability, cybersecurity, schedule, budget, and supportability requirements.
- Embed defense-in-depth into OT network designs and operating practices, using risk-based principles aligned with company policy, NIST guidance for OT security, ISA/IEC 62443, and applicable NERC CIP requirements.
- Implement and govern security zones and conduits, firewall and access-control policies, industrial DMZs, allowlisted communications, least-privilege access, and documented separation between enterprise IT, site OT, vendor, and external networks.
- Secure interactive and vendor remote access through approved VPNs, multi-factor authentication, jump hosts or privileged access controls, time-bounded access, session accountability, and rapid revocation.
- Integrate network devices with centralized monitoring and security tooling, including health and performance monitoring, syslog/SIEM, time synchronization, configuration management, and OT-awar
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