class WilzonMB {
  constructor(visitor) {
    this.user = "wimarbueno";
    this.role = "Senior Backend Engineer";
    console.log(`👋 Hello ${visitor}, welcome to ${this.user}'s GitHub!`);
    console.log(`🚀 Built a Peruvian MVNO backend from scratch · ${this.role}`);
    console.log(`🔧 Well-known: ${JSON.stringify(this.stack())}`);
    console.log(`📚 Currently learning: ${this.learning()}`);
  }

  stack() {
    return {
      backend:    "Node.js, Python (FastAPI), PHP (Laravel), Go",
      frameworks: "Sails.js, Vue.js, Django",
      cloud:      "GCP, Docker, Nginx, Debian Linux, Firebase",
      databases:  "PostgreSQL, Redis, BigQuery, Firestore, MySQL, MariaDB",
      security:   "Fail2ban, UFW, SSH Hardening, Let's Encrypt",
      protocols:  "REST, SOAP/WSDL, OAuth 2.0, JWT",
      domain:     "Telecom/MVNO, Regulatory Systems, Payment Gateways"
    };
  }

  learning() {
    return ["Go (gRPC, Protobuffers)", "React", "Next.js", "Observability (Grafana, Prometheus)"];
  }
}

const me = new WilzonMB("your_name");

// Output:
// 👋 Hello your_name, welcome to wimarbueno's GitHub!
// 🚀 Built a Peruvian MVNO backend from scratch · Senior Backend Engineer
// 🔧 Well-known: { backend: "Node.js, Python (FastAPI), PHP (Laravel), Go", frameworks: "Sails.js, Vue.js, Django", ... }
// 📚 Currently learning: ["Go (gRPC, Protobuffers)", "React", "Next.js", "Observability (Grafana, Prometheus)"]