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Private AI Infrastructure

Built in your estate. Run by your team.

PureTensor takes a private AI requirement from an empty rack or server room to a working production system inside your own environment: designed, procured, built, commissioned, deployed, and handed to staff we have trained. Your data stays inside your boundary, the hardware is yours, and the system is documented well enough to run without us.

What a build covers

Where the requirement calls for it, an engagement covers every layer from the floor to the workload:

Discovery & sizing

  • Workload and capacity discovery
  • GPU, CPU and server sizing
  • Rack, power and cooling requirements
  • Benchmarks on our platform before purchase

Platform

  • Network and fabric design
  • Storage architecture, including Ceph
  • Proxmox virtualisation
  • Kubernetes and K3s
  • The NVIDIA GPU stack
  • Identity, access and the management plane

Workloads

  • vLLM and model serving
  • Retrieval, embeddings and RAG
  • Agents and workflow integration
  • Speech and vision pipelines
  • Persistent organisational memory

Assurance & handover

  • Backup and recovery
  • Observability and alerting
  • Burn-in and acceptance testing
  • Documentation and runbooks
  • Operator training and handover
  • Remote or on-site specialist support

Security designed in, not bolted on

Every system we build carries the controls we run on our own production estate and measure there every day. See the five rules of our operating doctrine.

  • Workload identity and short-lived credentials
  • Four-eyes approval on destructive actions
  • Immutable backups: the identity that writes a backup cannot delete it
  • No agent credential with a path to recovery storage
  • Adversarial testing of the system and of the AI itself: prompt injection, memory poisoning, tool abuse
  • Automated remediation inside a written authority boundary, with a human gate outside it

We specify. You own.

We are not a hardware distributor. We specify the system, and leading server OEMs supply it through their established channels. You contract for and own the hardware directly, with the manufacturer's warranty in your name. We are accountable for the architecture, the commissioning and the implementation.

Built to operate without us

Dependency is not our business model. Every build ends with architecture diagrams, as-built documentation, runbooks, rehearsed recovery procedures and hands-on training, so your own staff run the system day to day. We stay available for upgrades, incidents, expansion and new workloads. What every handover includes.

No egress by design

A customer-estate deployment does not depend on PureTensor infrastructure. Models, data and inference stay inside your facility, our engineers work under your access controls, and nothing leaves unless you decide it should.

Not ready to buy?

Run phase one on our UK platform. Benchmark the real workload on the class of hardware we would specify for you, then decide: build your own estate, stay on ours, or run both.

Talk to the engineers