- saas-metrics-simulator: raw billing data → DuckDB staging/marts → tested KPI tree → ARR driver model. CAC, churn and new-customer ARPA each move 36-month ARR about 2.2× more than expansion does.
- experiment-analysis: A/B test on 90,189 players. Day-7 retention is −0.82 pp [−1.33, −0.31], but an SRM failure (p = 0.009) blocks the ship decision until assignment is audited.
- ai-market-research-agent: web search → LLM extraction → rule-based five-forces, HHI and VRIO scoring, with every claim cited. The foundry market has HHI ≥ 5,051.
- ai-assistant-workflow: specialist-agent prompts, cron routines and a hash-locked, single-use approval gate for every external action.
Contact: LinkedIn