Wilzon Mariño Bueno

Senior Backend Engineer

Node.js · Python · GCP · Telecom Platforms · Distributed Systems

Lima, Perú 🇵🇪 — Remote · Available

I'm more comfortable in Spanish — feel free to reach out in either language.

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About me

16+ years building software — the last 8 specialized in designing and operating telecom platforms in production. I architected and built the entire backend of Cuy Móvil, a Peruvian MVNO running on Claro's network: integrated 15+ external systems, automated regulatory compliance, and scaled to hundreds of thousands of active subscribers — starting as the sole backend engineer. As of May 2026, the company has 70+ employees and a 17+ engineering team.

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< Who am I? />

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, TypeScript, 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",
      ai_tools:   "Cursor, Claude, Codex, Open Claw",
      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)"]

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Tech Stack

Languages

Frameworks

Databases

Cloud & Infrastructure

Security & Hardening

Observability

Protocols & Integrations

Tools

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Personal Infrastructure in Production

I design, deploy, and operate my own VPS infrastructure running multiple real production sites:

What	Detail
🔧 Automated provisioning	13 Bash scripts · 970+ lines · configures UFW, Fail2ban, Docker, Nginx + full security hardening in under 15 minutes
🌐 Domains in production	6 active domains/subdomains (including an active forum) over Nginx reverse proxy with virtual hosts, SSL via Certbot and FastCGI cache
🗄️ Database management	PostgreSQL, MySQL and MariaDB in Docker Compose with role separation, IP restrictions and automated backups to GCS via rclone
📊 Observability stack	Grafana + Prometheus + Alertmanager + Loki + Promtail — container monitoring and alert rules
🔒 Security hardening	10 Fail2ban jails, UFW with SYN flood + port scan protection, SSH hardening, kernel hardening via sysctl

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Open Source

Node.js package that calculates the geographic distance between two coordinates (lat/lng).