We are looking for a versatile, hands-on OT/IT Support Engineer to join our team at our Milpitas site. This is a blended hands-on role, split between managing shop-floor OT infrastructure and providing direct end-user desktop assistance. You will serve as the primary on-site technical point of contact, ensuring our engineers, technicians, and operations teams have reliable, high-performing workstation technology, while also maintaining and scaling the physical network and compute infrastructure that powers our testing and manufacturing operations (Operational Technology / OT).
If you thrive in high-tempo environments where no two days are the same, equally comfortable running cables, configuring network switches on the shop floor, fixing a user's workstation issue or creating a monitor to track network utilization, this is the role for you.
What you'll do:
- OT & Industrial Infrastructure Maintenance: Deploy, monitor, and maintain local site server cabinets, industrial network switches, patch panels, cabling, power equipment (UPSs), and edge compute nodes supporting test rigs and manufacturing lines
- Network & Systems Setup: Perform physical installation and basic configuration of networking gear (switches, access points, edge firewalls) in coordination with central Network and IT Security teams
- On-Site Deskside Support: Provide white-glove hardware and software troubleshooting for local staff, including onboarding, endpoint deployment (Windows, Mac, Linux), workstation peripheral setup, and rapid incident resolution
- Site Tech Asset Management: Maintain accurate asset tracking, hardware inventory, rack elevations, and lifecycle management for all IT/OT endpoints and spare hardware at the Milpitas facility
- AV & Conference Room Support: Ensure conference rooms, display systems, and audio/video equipment are operational and updated
- Cross-Functional Collaboration: Partner with manufacturing engineers, control systems teams, and corporate IT to safely integrate operational technology (OT) networks with core enterprise systems
- Process & Documentation: Create clear end-user documentation, standard operating procedures (SOPs), and site network layout diagrams.
- A hybrid problem solver who enjoys interacting with users face-to-face while staying deeply connected to core OT/IT infrastructure.
- Self-starters who take ownership of a physical site, maintaining high standards for organized cabling, hardware staging, and overall technical workspace presentation.
- Strong communicators capable of explaining complex technical topics clearly to both non-technical staff and high-level engineering teams.
What we’re looking for:
- Experience: 3–5+ years in a hands-on technical support, IT systems administration, or site infrastructure engineer role
- OS Support: Deep familiarity with supporting and troubleshooting Windows, macOS, and basic Linux (Ubuntu/RedHat) environments. Kubernetes experience is a plus
- Infrastructure & Cabling: Demonstrated hands-on experience racking/stacking servers, patch panel punching, cat6 ethernet cabling, clean cable management, and hardware troubleshooting
- Infrastructure as Code: Familiarity with Terraform, Ansible and using those patterns to scale out repeatable systems
- Networking Fundamentals: Strong working knowledge of TCP/IP, VLANs, subnetting, DHCP, DNS, and basic CLI network switch configuration (Cisco, Ubiquiti, Juniper, or similar)
- Identity & Endpoint Management: Experience with Active Directory, Okta, and modern endpoint management tools
- Physical Presence & On-Site Capability: Ability to work 100% on-site in Milpitas, CA
Must-have Requirements:
- Ability to lift up to 50 lbs occasionally
- Perform activities such as stooping, climbing, standing, sitting for extended periods of time
- Willingness to travel or work required nights/weekends/on-call occasionally
- Dedication to safety to mitigate industrial hazards that may include heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, high current, pressure systems, and cryogenics
Skills Required
- 3-5+ years of experience in hands-on technical support, IT systems administration, or site infrastructure engineering
- Experience supporting and troubleshooting Windows, macOS, and basic Linux environments
- Hands-on experience racking and stacking servers, punching patch panels, installing Cat6 Ethernet cabling, managing cables, and troubleshooting hardware
- Familiarity with Terraform and Ansible for repeatable infrastructure deployment
- Strong knowledge of TCP/IP, VLANs, subnetting, DHCP, DNS, and basic network switch CLI configuration
- Experience with Active Directory, Okta, and modern endpoint management tools
- Ability to work 100% on-site in Milpitas, California
- Ability to lift up to 50 pounds occasionally
- Ability to stoop, climb, stand, and sit for extended periods
- Willingness to work occasional nights, weekends, and on-call shifts
- Dedication to safety in an industrial environment involving hazards such as high voltage, cryogenics, fumes, noise, and strong magnets
- Kubernetes experience
What We Do
Commonwealth Fusion Systems (CFS) has the fastest, lowest cost path to commercial fusion energy. CFS is collaborating with MIT to leverage decades of research combined with new groundbreaking high-temperature superconducting (HTS) magnet technology. HTS magnets will enable compact fusion power plants that can be constructed faster and at lower cost. CFS is now building SPARC, the world's first commercially relevant, net energy fusion demonstration device. SPARC will pave the way for the first fusion power plant, ARC, that will produce power on the grid. The ultimate mission is to deploy fusion power plants to meet global decarbonization goals as fast as possible. CFS has assembled a team of leaders in tough tech, fusion science, and manufacturing with a track record of rapid execution. Supported by the world’s leading investors, CFS is uniquely positioned to deliver limitless, clean, fusion power to combat climate change. If you are interested in joining our team, check out cfs.energy/careers for more information.
