SlipstreamJobs tracks this role from the company's public career site. Apply directly on the employer's site.
Commonwealth Fusion Systems is seeking a Staff OT/IT Support Engineer to join their Milpitas facility. This is a hands-on, autonomous role split between managing shop-floor operational technology (OT) infrastructure and site-wide IT infrastructure. You will serve as the primary on-site technical point of contact, ensuring engineers, technicians, and operations teams have reliable, high-performing, secure systems while maintaining and scaling the physical network and compute infrastructure that powers testing and manufacturing operations.
In this role, you will deploy, monitor, maintain, and secure local site server cabinets, industrial network switches, patch panels, cabling, power equipment (UPSs), and edge compute nodes supporting test rigs and manufacturing lines. You'll perform physical installation and basic configuration of networking gear (switches, access points, edge firewalls) in coordination with central Network and IT Security teams. You'll act as the on-site extension of the Cybersecurity team, ensuring new systems follow secure-by-default standards, serving as the local responder for security events, escorting and overseeing vendor access, and raising the security posture of the site.
Additional responsibilities include maintaining accurate asset tracking, hardware inventory, rack elevations, and lifecycle management for all IT/OT endpoints and spare hardware at the facility. You'll partner with manufacturing engineers, control systems teams, and corporate IT to safely integrate operational technology networks with core enterprise systems. You'll create clear end-user documentation, standard operating procedures (SOPs), and site network layout diagrams.
This role thrives in high-tempo environments where no two days are the same. You'll be equally comfortable running cables, configuring network switches on the shop floor, or spotting security concerns and escalating them appropriately. The ideal candidate is an autonomous self-starter who takes ownership of the physical site, maintains high standards for organized cabling and hardware staging, and communicates complex technical topics clearly to both non-technical staff and high-level engineering teams.
REQUIREMENTS:
- 7+ years in a hands-on technical support, IT systems administration, or site infrastructure engineer role
- Deep familiarity with supporting and troubleshooting Windows, macOS, and basic Linux (Ubuntu/RedHat) environments
- Demonstrated hands-on experience racking/stacking servers, patch panel punching, cat6 ethernet cabling, clean cable management, and hardware troubleshooting
- Strong working knowledge of TCP/IP, VLANs, subnetting, DHCP, DNS, and basic CLI network switch configuration (Fortinet, Ubiquiti, Juniper, or similar)
- Experience with Active Directory, Okta, and modern endpoint management tools
- Familiarity with Terraform and Ansible for infrastructure as code patterns
- Ability to work 100% on-site in Milpitas, CA
- Ability to lift up to 50 lbs occasionally
- Ability to perform activities such as stooping, climbing, standing, sitting for extended periods
- Willingness to travel or work required nights/weekends/on-call occasionally
- Dedication to safety and ability to work around industrial hazards including heat, cold, noise, fumes, strong magnets, lead, high voltage, high current, pressure systems, and cryogenics
BONUS QUALIFICATIONS:
- Kubernetes and AWS cloud experience
- On-premises virtualization with vCenter and Proxmox
- Database fundamentals around Postgres and Timescale
- Comfort using AI tooling and ability to discern hallucinations
- Background as a sysadmin who has transitioned to SRE with DevOps mindset
- Strong documentation skills and knowledge of PLCs and Purdue models
