2 min lesson
The loop end to end
Say what this means in practice: "The job description gives you the skeleton in two phrases."
Step 1 of 3
The job description gives you the skeleton in two phrases: a few “short technicals,” then “an onsite in our office, where you'll work on a small project, discuss ideas and meet the team.” Everything else in a Model Routing & Inference loop hangs off that skeleton and you should know exactly which parts Cursor states and which parts are standard for this kind of inference role.
Hold the whole shape before you prep a single answer. The loop is one sustained argument that you can ship senior-IC inference-platform work from week one, with taste about reliability, cost and latency. Each stage probes a slice of that claim.
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Full explanation
The Loop at a Glance
Interactive diagram. Step through it with the Next and Previous controls below, or Tab to a region to read its detail.
Step through each stage to see what it tests and how to prep. JD-confirmed stages are the technicals and the onsite; the design and inference rounds are standard-for-the-role inferences.
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Advanced table
“JD-confirmed” = stated in the posting
- Stage
- Recruiter screen
- Source
- Standard
- What it tests
- Motivation, why inference, real product use
- Stage
- 2-3 technical screens
- Source
- JD-confirmed
- What it tests
- Applied coding + judgment driving AI
- Stage
- Take-home / small project
- Source
- JD-implied
- What it tests
- Production-quality build, failure handling
- Stage
- Onsite project + discussion
- Source
- JD-confirmed
- What it tests
- Day-one craft, scoping, defense
- Stage
- Systems-design round
- Source
- Inferred
- What it tests
- Serving/routing under explicit budgets
- Stage
- Inference deep-dive
- Source
- Inferred
- What it tests
- Prefill/decode, KV cache, batching, failover
- Stage
- Behavioral / craft
- Source
- JD-implied
- What it tests
- Senior-IC bar, pace, authentic opinions
| Stage | Source | What it tests |
|---|---|---|
| Recruiter screen | Standard | Motivation, why inference, real product use |
| 2-3 technical screens | JD-confirmed | Applied coding + judgment driving AI |
| Take-home / small project | JD-implied | Production-quality build, failure handling |
| Onsite project + discussion | JD-confirmed | Day-one craft, scoping, defense |
| Systems-design round | Inferred | Serving/routing under explicit budgets |
| Inference deep-dive | Inferred | Prefill/decode, KV cache, batching, failover |
| Behavioral / craft | JD-implied | Senior-IC bar, pace, authentic opinions |
“JD-confirmed” = stated in the posting. “Inferred” = standard for a high-scale inference role, not a Cursor promise.
The posting names the technical screens and the onsite project plus discussion. The dedicated systems-design and inference deep-dive rounds are reasonable inferences for an inference-platform role, not commitments from the JD. If a recruiter tells you the actual format, that overrides this map - ask them.
The full span commonly runs two to three weeks and senior IC roles lean toward including a take-home. The onsite is the block that decides it, because it mirrors the real day-one work: scope a small inference problem, build a clean increment, defend the tradeoffs to the people you'd sit next to.
QWhich parts of the loop are stated directly in the job description and which are inferred for this kind of role?