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Kevin Defalco
Software Developer

Kevin Defalco

Buenos Aires, Argentina

Passionate about software. I build web systems and bespoke tools.

# Experience

OM Express

Present

Developer · 2024 — Present

Architected and built from scratch an internal ERP for the end-to-end logistics management of a private postal carrier. Led the digitization of daily operations and the treasury module: real-time view of balances, movements, and company billing.

OM Express — Developer

# Projects

Tu Turno Padel

Featured

A centralized platform for booking padel courts. Passwordless auth and booking (via WhatsApp) plus a weekly admin dashboard designed for court owners to manage schedules and reservations.

  • Next.js 16
  • TypeScript
  • Drizzle ORM
  • Kapso

Prode Mundial

A football predictions app (World Cup pool). Users create and join private groups, submit predictions before kickoff, and compete in real time on an automated leaderboard. Solid architecture, tested with Vitest.

  • Next.js 16
  • React 19
  • TypeScript
  • Drizzle ORM
  • PostgreSQL
  • Tailwind v4
  • Vitest

Anotador para juegos

An interactive web tool for keeping score in real time. Intuitive, mobile-first UI built to replace pen and paper during board and card game sessions.

  • React
  • TypeScript
  • Tailwind CSS

Tu Turno Padel — Demo

# Education

# Open Source & Tooling

Tools

Codex Bell

Open-source Python package published on PyPI. Available for the community.

Next.js Vercel Release Templates

A structured, optimized template to speed up the start and deployment of modern web projects on Vercel, with best practices from the first commit.

Agentic engineering

I don't just build apps: I build the infrastructure that makes coding with agents (Claude Code, Codex) consistent, secure, and auditable.

Composable skills

Knowledge bundles in the style of mattpocock/skills, with three-level loading (metadata, body, resources) and a model-invoked vs user-invoked split. The agent loads only what it needs, when it needs it.

Agentic harness

A CI validator for documentation and skills: byte-for-byte mirror between .agents/ and .claude/, with CONTEXT.md and ADRs as durable memory. If operational knowledge drifts, the build fails.

CI/CD & Security

Secretless CI, Conventional Commits + release-please, deliberate tag-based deploys, HMAC rate limiting, an Expected Failures policy (Sentry/Axiom), and supply-chain awareness (Dependabot + holds).

mattpocock/skills· Anthropic — Building Effective Agents

# Contact

Want to work together? Drop me a line.