Arnav Hazra · Engineering
Production deployments and interactive runtimes. Health and latency are probed server-side on load.
Tier 1
Clinical voice and GHL runtime guards: per-call cent-budget circuit breaker, researcher-to-writer JSON diff gate, external calendar/DB state check, and a hand-typed hostname allowlist.
Multi-vertical voice AI, missed-call text-back simulator, 480-lead SMS reactivation wave, AEO citation scanner, and a Retell/n8n/GHL fulfillment pack compiler.
Outbound enrichment waterfall, evidence-bound sequence composer with a claim diff gate, reply triage sub-agent, and verified calendar booking.
Discovery call transcript compiler (fixed-margin SOW, Supabase RLS SQL, n8n DAG) and a TypeScript AST diff gate that blocks PRs when public exports or catch signatures drift.
Tier 2
Hostile persona evals for an after-hours HVAC dispatcher, v11→v12 gas/CO hard-stop prompt diff, dual-agent tech briefing, and Retell webhook fan-out.
Human-in-the-loop workflow kernel: versioned DAGs, server-driven UI, maker-checker approval, audit-first tool gateway, and streamable HTTP MCP.
Pre-deployment GenAI evaluation gate: 3-family LLM jury, Wilson intervals, McNemar paired significance, and SHIP / HOLD / BLOCK release sign-off.
Tier 3
Marketing and incrementality engine: append-only hashchain ledger, marketplace fee waterfall to net payout, synthetic-control geo-lift with CUPED, and budget pacing.
Automotive decision canvas with hybrid pgvector + FTS reciprocal rank fusion (k=60) and a live dealer bidding desk.
Omnichannel media and contribution-margin dashboard across Shopify, Meta, TikTok, and Shopee with an MCP strategist.
Five-step browser studio turning header-only schemas into warehouse pipelines, DAX/Tableau/SQL measures, and an executive canvas.
Drag-and-drop BI workspace built on React Flow and Recharts.
Interactive Dashboard Architect and Report Architect training environments.
Collector valuation desk and price-per-piece market scorecard.