Nkosi Felix, Senior Data Platform Engineer

Hiring Manager Proof

Demonstrates Staff-level engineering thinking through architecture, tests, evidence, and operations -- not a title claim.

Proof, by category

Architecture

System boundaries and tradeoffs: a policy engine and an evidence engine sit between the model orchestrator and any response that reaches a client. Architecture diagram

Tests

Deterministic verification and explicit failure paths, including adversarial cases (prompt injection, claim escalation, PII hallucination) -- not just happy-path coverage.

Evidence

Every public claim traces back to an approved entry in a generated, checksummed evidence manifest. Unsupported claims are rejected before they reach a client.

Operations

Structured telemetry per request (latency, coverage, adjudication result) without ever logging the raw question or provider output. Degraded modes fail closed to one safe answer.

Governance

Automation preserves owner approval by default: write-capable actions require explicit dry-run/apply separation, and the MCP tool surface is a single read-only weather tool, not a general-purpose fetch/filesystem/write capability.

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