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
Build what developers touch: the APIs, SDKs and console they use to run sandboxes, call models, inspect traces and start training.
What you'll do
- Design clean, stable APIs and SDKs in Python and TypeScript
- Build the web console for traces, evals, models and usage
- Write docs and examples developers actually finish
- Talk to users every week and ship what they need
What we're looking for
- Strong full-stack engineering (TypeScript, React, Python or Go)
- Taste for developer experience and API design
- You have shipped products real developers use
Nice to have
- Experience at a developer-tools or cloud company
- Built agents yourself
Projects you might work on
- A developer goes from sign-up to a running sandbox in five minutes
- A trace viewer that makes a failed agent run obvious at a glance
Logistics
San Jose, CA · Hybrid · 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.