Javier Ramos Humeres

Santiago, Chile (Hybrid)

• Developed for the generative-AI platform of a biotech SaaS: contributed to building a specialized AI agent and led the v1-to-v2 migration of the API that powers the AI copilot (LLM agent) and its Custom Tools: 58 controllers and 182 REST endpoints in NestJS, with clean architecture and automated testing via TDD.
• Built a tool-chain for the end-to-end development cycle: Claude Code skills, an MCP server, and issue-to-PR automation, cutting per-controller migration time from ~1 week to ~1 day.
• Built the API's Python client SDK (auto-generated from the OpenAPI / Swagger documentation), which by design covers 100% of the v2 surface and exposes it for programmatic consumption.
• Built frontend and backend in React / Next.js and NestJS across multiple user-facing tools, including the data and integration layers that power generative-AI features, applying software-engineering principles such as DDD (Domain-Driven), TDD (Test-Driven), SDD (Spec-Driven), Clean Architecture, and SOLID.

Technologies: TypeScript, Node.js, NestJS, Python, React, Next.js, PostgreSQL, GraphQL, OpenAPI / Swagger, Claude Code, Cursor, MCP servers, Anthropic API, LangChain, LangGraph, Docker, GitHub Actions (CI/CD).

Santiago, Chile (Hybrid)

• Built end-to-end payment integrations (Klap, Transbank, Getnet) for custom Shopify checkouts: checkout flows, confirmation webhooks, reconciliation, refunds, and failure recovery for ~10,000 orders per month.
• Built an analytics backend that automatically collects and pre-aggregates ~10,000 monthly orders via hourly and daily cron jobs, with a Chart.js dashboard, Python scripts, and Excel / CSV export.
• Built scalable event-driven microservices on AWS Lambda and the Serverless Framework (webhooks, SNS / SQS queues) for payment integrations and customer notifications (~1,000 monthly messages via the WhatsApp API).
• Applied software-engineering principles such as DDD (Domain-Driven), TDD (Test-Driven), SDD (Spec-Driven), Clean Architecture, and SOLID.

Technologies: Node.js, Express, TypeScript, React, Python, Django, FastAPI, PostgreSQL, MongoDB, Sequelize, Claude Code, Cursor, AWS (Lambda, S3, SQS, SNS, SES), Serverless Framework, Docker, CI/CD, Shopify, WhatsApp API.

Chatbot IA (portfolio-app) · Live · since 2026

An end-to-end LLM conversational agent that can discuss topics relevant to my professional profile as a developer. Deployed in production.

Technologies: Python, LangGraph, Anthropic API, TypeScript, Next.js, PostgreSQL, Railway, Vercel, OpenRouter.

Agentic Dev Kit · Open source · since 2026

Spec-driven Claude Code skills and MCP server.

World Music Map · since 2026

An interactive music-discovery map.

Technologies: Next.js App Router (RSC), TypeScript, Prisma, PostgreSQL, MapLibre.

Computer Music Journal (MIT Press)

Peer-reviewed; physics-based sound synthesis.

MIT PressPDF