Technical practice
How would you design a tool-using LLM agent that recommends next steps but executes only approved financial tasks?
What to coverPreparation suggestion: Explain how the agent would distinguish advice from action, check approval before tool calls, and record what it did. Discuss the trade-off between useful automation and human oversight.
How would you diagnose and recover from an agent that loses state or takes the wrong step in a financial workflow?
What to coverPreparation suggestion: Walk through tool-use and planning failures, how traces would expose the point of failure, and when to pause for human review. Explain how you would resume or stop work without silently repeating an action.
How would you improve invoice matching or payment reconciliation when the available financial documents disagree?
What to coverPreparation suggestion: Describe how you would ingest and compare records, handle ambiguous matches, and decide when to escalate rather than automate. Explain how you would measure matching quality and downstream workflow impact.
How would you build and evaluate RAG for document-intensive financial operations?
What to coverPreparation suggestion: Cover document ingestion, retrieval quality, grounding of generated answers, and handling missing or conflicting evidence. Distinguish retrieval errors from generation errors when diagnosing poor results.
When would fine-tuning an LLM on proprietary data be preferable to improving retrieval or prompts?
What to coverPreparation suggestion: Define the failure you are trying to fix and compare expected gains against data, maintenance, and inference costs. Explain what evaluation would show that fine-tuning moved the needle.
How would you design a reliable, cost-efficient ingestion-to-inference pipeline with model routing?
What to coverPreparation suggestion: Explain how you would choose routes based on task quality, latency, and cost, and how you would handle a model or provider failure. Describe what you would measure to tell whether routing improves the complete workflow.
How would you develop a classical ML model for risk scoring, forecasting, or ranking in this domain?
What to coverPreparation suggestion: Walk through feature engineering, model selection, evaluation, and calibration using one of the model types named in the posting. Explain how you would check whether offline results remain useful after deployment.
How would you use golden datasets and pull-request regression tests for an agentic feature?
What to coverPreparation suggestion: Describe how you would choose representative cases and score both task outcomes and unsafe or incorrect actions. Explain which changes would block a release and how you would investigate a regression.
How would you run an A/B test of a new AI feature and judge whether it improved outcomes?
What to coverPreparation suggestion: Define a customer-relevant outcome alongside quality and reliability guardrails. Discuss statistical significance and why an apparent online improvement might conflict with offline evaluation.
What would you instrument and version to keep a deployed AI feature improving?
What to coverPreparation suggestion: Discuss agent tracing, outcome monitoring, and model and prompt versioning so a change can be tied to its effects. Explain how deployment and rollback decisions would use that evidence, including when feature-store inputs matter.
Behavioural practice
Tell me about a time you translated an ambiguous customer or business need into an AI solution.
What to coverPreparation suggestion: Use a real situation to show how you worked with product, engineering, data, or customers to clarify the need and choose a technical approach. State your actions and the result, including how you determined whether the solution addressed the need.
Tell me about an AI/ML product you helped take from prototype to production.
What to coverPreparation suggestion: Describe the situation, your specific engineering decisions, and how you handled reliability or maintainability rather than stopping at a demo. Give the observed result and explain what evidence connected the product to a business outcome.
Tell me about a production AI failure or silent regression you investigated.
What to coverPreparation suggestion: Set out the situation, the signals or traces you used, and the actions you took to contain and diagnose the issue. Close with the result and any evaluation or monitoring change that followed.
Tell me about a time you had to balance automation against human oversight.
What to coverPreparation suggestion: Give a real situation involving a consequential action or uncertain model output, then explain your decision and how you aligned stakeholders. Describe the result without claiming that oversight eliminated all risk.
Tell me about a time you decided whether new AI research was ready for a practical product use case.
What to coverPreparation suggestion: Describe the business problem, how you tested the approach against an alternative, and the trade-offs you considered. State what you chose to do and what the resulting evidence showed.