About Voltspan
Voltspan helps companies keep their data in their own hands and turn it into models of their own. We build from the power up: our own GPU clusters in US data centers, the sandboxes and inference agents run on, and the training behind them. We are growing across every layer of the stack.
About the role
Design, build and run the networks inside our GPU clusters, from InfiniBand fabrics to the links between our sites.
What you'll do
- Design InfiniBand and RoCE fabrics for multi-node training
- Build and run management, storage and internet networks
- Bring up new clusters with our hardware partners, from cabling plans to acceptance tests
- Automate configuration and monitoring
What we're looking for
- Several years running production data center networks at scale
- Hands-on InfiniBand or RoCE experience
- Comfortable on the data center floor as well as at the console
Nice to have
- NVIDIA Quantum or Spectrum switching
- BGP and EVPN
Projects you might work on
- Bring up the network for a new 1,000-GPU site
- Private links between all our data centers
Logistics
San Jose, CA · On-site · Full-time
If a role excites you but you don't meet every qualification, apply anyway. We care more about what you have built than about a checklist.
Salary range, visa sponsorship and benefits will be added before this posting goes live.
How we work
- Small teams, big systems. Everyone here owns real infrastructure and real customers from week one.
- From volts to agents. Work moves across the whole stack, so you will see how your piece connects to power, GPUs, tokens and agents.
- We run what we build. The people who write the software also operate it, next to the people who rack the hardware.
Equal opportunity
Voltspan is an equal opportunity employer. We consider all qualified applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, veteran status or any other characteristic protected by law. We consider qualified applicants with arrest and conviction records in accordance with the California Fair Chance Act.
If you need an accommodation during the application process, let us know.