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Head of Infrastructure

General Compute
Posted 7 days ago, valid for 23 days
Location

San Francisco, San Francisco, CA

Salary

Competitive

Contract type

Full Time

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Sonic Summary

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  • The company is an AI inference neocloud leveraging ASIC compute, seeking an infrastructure lead with 7+ years of experience in infrastructure, SRE, or platform engineering.
  • The role involves owning the inference control plane, gateway, and observability stack, with hands-on responsibilities in Kubernetes and incident response.
  • Candidates should have strong instincts for tail latency and experience managing vendor relationships to address production issues.
  • The position offers a competitive salary of $200,000, reflecting the expertise required and the company's growth stage.
  • Ideal candidates will also have experience with non-NVIDIA accelerators and a background in model-serving stacks, although these are considered nice-to-haves.

About Us

We are the first AI inference neocloud, using ASIC compute to generate tokens 5–7× faster than existing GPU-based competitors. We just closed an oversubscribed seed round and quadrupled our compute allocation to $97M. Multiple lender conversations are live on a $200M asset-backed equipment facility.

About the role

You'll own the infrastructure layer of our inference cloud end-to-end. Today that means the control plane, the gateway in front of our ASIC fleet, and the observability stack that tells us where every millisecond goes. Over the next 6-8 months, it will grow into a heterogeneous fleet: ASICs for decode, GPUs for pre-fill, and the physical-layer ownership that comes with it.

The first six months are hands-on: k8s manifests, dashboards, oncall, and a direct line to our ASIC partner's engineering team when production behaves strangely. The team grows under you from there.

What you'll do:

  • Own the inference control plane. At the moment, it's built on configuration provided by our ASIC partner; you'll be the person who understands it deeply enough to modify, extend, and eventually replace pieces of it.

  • Own the gateway and load balancer that fronts the fleet. Model placement, request routing, and tail-latency engineering live here, driven by live utilization and per-model SLOs.

  • Own observability end-to-end. Per-request tracing from OpenRouter ingress through to the accelerator, with p50/p95/p99 dashboards, SLOs, and alerting that wakes the right person.

  • Run capacity planning against a real, distributed traffic mix across the open-weight models we serve.

  • Own the operational side of the ASIC partnership. Most weird production issues route through their engineering team until we build that expertise in-house, and you'll be our technical face in those conversations.

  • Bring up the pre-fill side of our disaggregated architecture on a second hardware platform as it comes online. Different vendor, different fabric, different kernels.

  • Build the on-call and incident response practice from zero. Hire and grow the team underneath you.

What we need from you:

  • 7+ years in infrastructure, SRE, or platform engineering, with at least some of it at a serious inference, ML, or HPC shop.

  • Hands-on with Kubernetes at production scale — not just deploying, but debugging the weird stuff.

  • Strong instincts for tail latency. You think about p99 and utilization as the same problem, not different ones.

  • Comfortable owning a vendor relationship where the vendor's bugs are now your production issues.

  • Track record of building observability practices that actually catch problems, not just generate dashboards.

  • Have been on-call through real incidents and can talk about what you learned.

  • Want to be the first infra hire at something early, not the tenth at something big.

NIce-to-Haves:

  • Experience operating non-NVIDIA accelerators in production — TPUs, ASICs, or alternative GPU vendors.

  • Background with model-serving stacks (vLLM, TGI, TensorRT-LLM, SGLang).

  • Network fabric experience at data-center scale (RoCE, InfiniBand).

  • Have hired and managed an infra team before.

  • Comfort at the hardware boundary — firmware, drivers, thermals — for when the roadmap takes us there.




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