Karan B.

20+ years across billing, e-commerce, video platforms, PaaS, Edtech, ERP, and finance, telecom, Java plugin development, integrations, and technical support for companies worldwide. What I love to do: Automation: Python, SQL, Excel — reporting, reconciliation, data pipelines, API/webhook integrations Applied AI/ML: predictive models on your data (scikit-learn) Backend: Java & Python, payment gateways (Stripe etc.), REST APIs, PostgreSQL/MySQL Frontend integration: JavaScript SDKs, React, WordPress Support: L1–L3 to team lead, US/EMEA/APAC, thousands of tickets and remote sessions. Everything documented so it survives me. Off the clock, I build and run my own algorithmic trading systems (Python, TimescaleDB, live broker APIs, ML signal research) — real money, real data, no tolerance for models that only work in backtests. Before engineering took over, I taught quantitative reasoning to GRE/GMAT students — live, online, and on YouTube — so explaining complex things clearly isn't a soft skill I claim, it's a job I've held for more than a decade. And my freelance journey started from design. I keep US/UK/Europe hours and am looking for lasting client relationships, not one-off gigs.