Staff Software Engineer

Careers/Staff Software Engineer

Staff Software Engineer

Engineering Tel Aviv

• On-site / hybrid Full-time Staff level
  
  

We're hiring a staff software engineer to build and own the systems that run Anyray's optimizer on real enterprise traffic — production-grade work on the hot path of every LLM request.

01The role

Anyray is a self-hosted, pre-model middleware that optimizes the cost and performance of every LLM request. That optimization lives across every layer of a request — input, context, tool output, files, dev commands, and caching.

It's a hands-on engineering role — you own real production systems end to end, and you're on the hook for their latency, reliability, and correctness under real customer load.

02Why this role

LLM optimization is a young field with no settled playbook, so the optimizations you invent here are genuinely new — and they ship into production, not a paper. And they matter: real enterprises run enormous volumes of LLM traffic and feel every wasted token, so the work you do lands on live customer requests and solves a problem they actually have. It's about as close to the frontier, and as close to the product, as engineering gets.

03What you'll do

• Invent and ship optimizations. Design new strategies across every layer of a request — prompt and context compression, tool pruning, file and dev-command trimming, semantic caching, cache-prefix stabilization — and take them all the way to the hot path. Each one has to cut tokens on real traffic without degrading output.
• Prove every win. Build the evals and the token/quality instrumentation that separate a genuine saving from a plausible-sounding one. An optimization only ships when the numbers back it.
• Live in the caching trade-offs. Provider prompt caches only pay off on byte-stable prefixes, and a naive rewrite can cost more than it saves. Knowing exactly when an optimization actually wins — deterministic transforms, per-session decision pins, semantic dedup — is a lot of the job.
• Build and own the gateway that runs them. The real-time proxy that carries production LLM traffic — streaming, retries, backpressure — executing every optimization on the live request path.
• Keep it fast and deploy anywhere. Defend a tight latency budget on the hot path, and package the whole thing so it installs cleanly into any customer's cloud — AWS, GCP, Azure, containers, Kubernetes — and upgrades without drama.
• Own systems end to end. From first commit to code serving live customer traffic — plus the spend-visibility and governance product built on top — with a direct line to the founders.
  
  

04What we're looking for

• You've built and run backend or infrastructure systems in production, owned them end to end, and care about latency, correctness, and observability.
• You're comfortable in the request hot path — concurrency, streaming, tail latency, and failure modes are things you reason about by default.
• You've shipped to cloud environments and can build something that installs cleanly in someone else's.
• You're strong in TypeScript/Node, which is our stack, or fluent enough in a systems language that picking it up is quick.
• You already build AI-native — coding agents and LLM tooling are part of how you ship.
• You understand, or want to go deep on, LLMs, tokens, and how model APIs actually behave.
  
  

05Nice to have

• You've built proxies, gateways, or high-throughput streaming and networking systems.
• Experience with LLM inference, model APIs, or ML infrastructure.
• You've packaged software for customer self-hosting — Helm, operators, air-gapped installs.
• You've been early at a company before and liked it.
  
  

06How to apply

If this sounds like you, email [email protected]. Tell us about a system you built and owned end to end, or a nasty production problem you tracked down and fixed.

Apply

• TeamEngineering
• LevelStaff
• LocationTel Aviv
• Work modelOn-site / hybrid
• TypeFull-time
  
  

Name

Email

LinkedIn / GitHub

CV

• PDF or Word, ≤ 4 MB, optional
  
  

Why you

Prefer email? [email protected]