Systems Technician · 24/7 Operations

Jorge Esquiva

Critical production monitoring and hybrid infrastructure.

Systems Technician at Santander Digital Services, where I monitor and operate critical banking production environments 24/7 — hybrid infrastructure spanning Linux and IBM z/OS mainframes. My day-to-day includes observability with Dynatrace, incident management, SLA tracking, and alert analysis across CICS and batch workloads. I coordinate with international teams and access systems securely through CyberArk and VDI. Before Santander, I spent two years in L1 support at Fever in fully English-speaking, distributed 24/7 teams. I've lived and worked in London and Amsterdam, and I'm comfortable operating in international, English-first environments. Currently focused on remote opportunities in Systems Monitoring, Observability, and Infrastructure Operations — preferably in international, English-speaking teams.

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Homelab as Code

My own server, built and operated by me from scratch — a staging↔production environment on VMware with Docker Compose, Nginx, Cloudflare Tunnel, Portainer, and Uptime Kuma. Not a demo, not a tutorial: real infrastructure that serves real traffic.

Server Status — Onlinev0.1.0

homelab-node

Ubuntu 24.04 LTSx86_6413 GB RAM

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Real services on this server

Running

portfolio

booking-api

sales-api

caddy

uptime-kuma

cloudflare-tunnel

Platform

Docker

Docker Compose

Node.js

Infrastructure & Deployments

Real services I've deployed, secured, and exposed — from AWS EC2 to my own server behind Cloudflare Tunnel. All version-controlled, all documented.

In production

Booking API

Dual-environment deployment: AWS EC2 (Nginx, Certbot SSL, UFW, Security Groups) and home server (Docker + Cloudflare Tunnel). Publicly accessible and monitored 24/7.

Node.jsExpressMongoDBJWTDockerAWS EC2NginxCloudflare

Live demo View repository

In production

Sales API

API-key authenticated service running on the homelab behind Nginx reverse proxy. Exposed through Cloudflare Tunnel with Swagger docs. Production data types — amounts stored in cents, not floats.

Node.jsExpressPrismaSQLiteSwagger

Live demo View repository

Previous project — server decommissioned

Home Server — Automation

Minecraft server with real ops scripts: auto-restart on process crash, scheduled shutdown on inactivity, automated backups. My first home server project — the original hardware is no longer active but the scripts remain a reference for Bash/Python automation with systemd.

BashPythonLinuxsystemdDocker

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Mission Control

Real-time telemetry from the homelab node.

Connecting…

Host uptime

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Node resources

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Last CI/CD run

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Latest GitHub Actions run

Active alerts

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No active alerts

Data refreshes every 30 seconds.

Stack & Skills

Tools and technologies I work with daily — from production monitoring at Santander to the infrastructure behind this portfolio.

Linux & Systems

Ubuntu ServerLinux administrationsystemdBashUFWfail2banSSH hardeningMainframe z/OS

Containers & Virtualization

DockerDocker ComposeVMwarePortainer

Monitoring & Observability

DynatraceUptime KumaCICS monitoringAlert analysisSLA management

Cloud & Networking

AWS EC2Cloudflare TunnelNginxCaddy

CI/CD & Versioning

GitHub ActionsGit IaCSSH deploy keys

AI as a Tool

Claude CodeOpenCodeMind (persistent memory)

Web Development

Next.jsTypeScriptTailwind CSSNode.jsExpressMongoDB

Contact

Currently focused on remote opportunities in Systems Monitoring, Observability, and Infrastructure Operations — preferably in international, English-speaking teams.

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