Backend & fintech engineer · Chennai
_{Payments, ledgers, and market-data tooling. Currently all in on open source.}

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Final-year CS at VIT Chennai and on the founding team at WiseFolio, an early-stage fintech, building the data and payment layers behind an equities investing platform. Lately I spend my free chips on open source in the Python finance ecosystem.

Contributions to the finance and data libraries I actually use.

• OpenBB  70k ★  building an NSE market-data extension (obb.nse.*), alongside the core maintainers
• edgartools   merged S-3 filing section extraction into the SEC EDGAR library
• yfinance  24k ★  merged fixes to interval handling
• supabase-py   merged a type-coercion fix in the PostgREST array filters

ledger-api  ·  double-entry payment ledger  ·  FastAPI Postgres Redis

Balanced debit/credit rows inside one row-locked transaction so balances can't drift. Idempotent writes (Redis plus a Postgres fingerprint) keep retries safe from double-charges, and settlement events ship through an HMAC-signed transactional outbox that survives a DB rollback.

CVA-SACS  ·  equity stress-testing engine  ·  live demo  ·  Python XGBoost FinBERT

Stacks gradient-boosted models with CVaR, Monte Carlo, and conformal intervals over ~130 features plus a FinBERT sentiment index into a single 0 to 100 risk score. Walk-forward backtested, with SHAP for explainability. Built to be honest about uncertainty, not just print a number.

_{house rules: balances reconcile, retries are idempotent, and the webhook always fires.}