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oscardanielnc/README.md

Oscar Daniel Navarro Cieza

Full-stack product engineer from Peru (UTC-5), remote. Frontend is my specialty — React, Next.js, TypeScript — and I build the rest when the product needs it: NestJS APIs, PostgreSQL, queues, payments and React Native. I work with Claude Code every day, write the specs and architecture decisions first, and test everything until I can defend it.

Open to work — looking for a product startup building something new.

Featured

  • payment-orchestrator — one API and a hosted checkout for Stripe, Mercado Pago, USDT on TRON and USDC on Base, with a double-entry ledger and daily reconciliation. NestJS · Prisma · BullMQ · React · 23 ADRs · 300+ tests · 2-minute demo
  • tickerlens — type a ticker, get a cited bull and bear case. Next.js · FastAPI · pgvector · live
  • study-ai — handwritten notes → summary and auto-graded exam. FastAPI · PWA · 168 tests · live
  • exposure-dashboard — give it a username, email or ID and it reports public exposure with confidence and reasoning. FastAPI · Next.js · Playwright · 234 tests · live

What I work with

  • Frontend: React · Next.js · TypeScript · Tailwind CSS · TanStack Query · Zustand · Storybook
  • Backend: NestJS · Node.js · Prisma · PostgreSQL · Redis · BullMQ · Python (FastAPI)
  • Mobile: React Native · Expo · offline-first SQLite
  • AI: LLM APIs (Claude, Gemini, DeepSeek) · RAG · pgvector · Model Context Protocol (MCP)
  • Payments: Stripe · Mercado Pago · viem · TronWeb
  • Infra: Docker · GitHub Actions · Cloudflare · Oracle Cloud · Nginx

Reach me

oscarnavarro.dev · LinkedIn · oscar.navarro@pucp.edu.pe

Pinned Loading

  1. kepler kepler Public

    Market-neutral multi-sleeve crypto trading system. Ran on live capital, archived on its own evidence. Post-mortem included.

    Python

  2. market-catalyst-alerts market-catalyst-alerts Public

    Scores market catalysts from news and filings with LLMs, then measures the abnormal return of each alert to calibrate itself.

    Python

  3. tickerlens tickerlens Public

    Retrieval-augmented equity analysis where every claim links to its source. Next.js + FastAPI + pgvector.

    TypeScript

  4. tvindicators tvindicators Public

    Strategy validation engine: 40+ technical strategies in continuous paper trading, gated by multiple-testing correction.

    Python

  5. payment-orchestrator payment-orchestrator Public

    Payment orchestrator: Stripe, Mercado Pago, USDT on TRON and USDC on Base behind one API, with a double-entry ledger and daily reconciliation (test mode and testnets only)

    TypeScript

  6. study-ai study-ai Public

    Photograph handwritten class notes, get a study summary and an auto-graded exam. FastAPI + DeepSeek, PWA and Android.

    Python