Investor and advisor in dozens of startups and venture funds.Domain expertise: ecommerce, payments, anti-fraud, lendingFunctional expertise: hiring, managing, data science, internal tools, manual review

Visually discover new Shopify stores and products.

Sell your Shopify store to the world's best ecommerce operators.

Simpl is the safest and fastest way to shop in India and beyond.

Data science for Shopify stores. Bootstrapped, profitable, negative cash conversion cycle.

Instantly sell your home. Helped recruit the cofounders. Helped set direction on operations, debt capital markets, and models for home pricing, offer, and purchase.

Accept credit cards today, everywhere your business is.Joined shortly after launch when daily payment volume was < $1M / day. When I left we had 1,200 people and processed > $100M / day.Led 3 groups of ~100 people total:Square Capital: Founded the business. Recruited and led the team, including general P&L responsibility, product, design, risk / underwriting, capital markets, investor relations, and board reporting. Championed lending category to Board of Directors. Grew from idea to 20K+ merchants, $400M annualized loan volume, and $1B+ internal valuation. We built the industry’s first one-click loan acceptance product, copied later by Shopify, Stripe, and others. Significant equity valuation impact to SQ as first proof point of business beyond payments. First at-scale originate-to-sell model in industry, which minimizes balance sheet impact and risk. Risk: Led the team and helped grow from 6 to 40 people, vs. the 1K+ we feared would be required. We pioneered 60-second onboarding, next-day settlement, and 100x growth in payment volume while achieving industry-best metrics in loss prevention and customer experience.Data Science: Started and led the team. Company-wide, we were responsible for data science including measurements, experiments, optimizations, and prediction / machine learning. We covered the entire company with only 16 data scientists.

A community of entrepreneurs and investors that makes fundraising efficient.

Designed and quantitatively optimized viral products used by our 40+ games to acquire about 100 million new customers and retain existing ones. Co-invented an industry leading viral response model.

DNS is the Internet's phone book; it translates domain names into IP addresses. OpenDNS enables web security and other applications through DNS. I wore a lot of hats but mainly used data to analyze and predict behavior among customers, products, and marketing.

Helped start CrunchBase.

Alternative to the parking meter. Reserve spaces ahead of time online or park "on the fly" at any designated Park on the Fly lot.

Free classified ads website for college students.