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AI Quality Engineer

Xapien London💼 Full-time🗓 2026-08-18 → 2026-09-26

Core

Build and maintain evaluation systems and test infrastructure to ensure confidence in non-deterministic AI output for due diligence and risk intelligence.

Role type

Senior AI Quality Engineer (LLM Evaluation & Test Infrastructure)

Builds

Automated evaluation harnesses, versioned golden datasets, and CI/CD pipelines for AI investigative output.

Domain

AI-driven due diligence, risk intelligence, and financial services.

Deliverable

production ML models

Required skills

Python, Playwright, pytest, CI/CD, LLM evaluation (rubrics, LLM-as-judge), automated testing, data analysis, root cause analysis, cross-functional communication.

Preferred skills

Experience shipping LLM evals, experience with non-deterministic output testing, ability to simplify complex technical concepts.

Technologies

Python, Playwright, pytest, CI/CD, Claude Code.

Responsibilities

Enhance and run layered eval harnesses including automated checks and human review; maintain versioned golden datasets; track signals like groundedness and hallucination rates; run and improve tiered CI models; fix flaky tests and wobbling metrics.

Seniority

Senior, hands-on IC

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