DE

David Espinoza

DevOps / SRE

ES EN
Command Center · Projects

Technical Projects & Platforms

Platform, API, automation and infrastructure projects designed for real operational environments.

Kore WhatsApp API / Messaging Gateway

Backend platform for managing multi-instance WhatsApp sessions, oriented to enterprise SaaS. It includes QR lifecycle, message sending and receiving, webhooks, persistence, operational diagnostics and Chatwoot integration.

Stack: Node.js, Docker, PostgreSQL, Redis, BullMQ, Traefik, Chatwoot, Webhooks

Value: Technical foundation for a centralized WhatsApp support platform for companies with multiple numbers and agents.

In development / internal platform

QA Console / Admin Console

Operational console to create, start, diagnose and test WhatsApp instances. It allows QR visualization, test messages, service status review and faster technical validation.

Stack: Frontend web, API REST, Traefik, Basic Auth, health checks, diagnostics

Value: Reduces operational friction and enables controlled validation of messaging flows.

Internal / operational

Social Gateway / Meta API

Gateway for Facebook and Instagram integrations through Meta Graph API. Handles OAuth, Pages, Instagram Business Accounts, encrypted tokens, webhooks, accounts, conversations, messages and outbound jobs.

Stack: Node.js, PostgreSQL, Redis, BullMQ, Docker, Traefik, Meta Graph API

Value: Foundation for an omnichannel SaaS architecture with enterprise messaging.

In development / production-like lab

VPS Infrastructure with Traefik

Design and operation of Docker Compose stacks behind Traefik with TLS, internal networks, private services, public domains, health checks and monitoring.

Stack: Docker Compose, Traefik, Let's Encrypt, Cloudflare, Linux, PostgreSQL, Redis

Value: Flexible, secure infrastructure prepared for production services.

Operational

Observability Stack

Monitoring and logging stack for APIs, containers, databases and critical services.

Stack: Grafana, Prometheus, Loki, Promtail, PMM, Docker

Value: Improves visibility, diagnostics and operational continuity.

Operational / continuously improving

BMA / AI Operations Framework

Conceptual and operational architecture for agents, skills, runbooks, inventory and policies for AI-assisted DevOps operations.

Stack: GitHub, OpenAI API, Ollama, Hermes, OpenClaw, runbooks, automation

Value: Standardizes operational knowledge and accelerates diagnosis, documentation and automation.

Applied research / personal system

ContabIA

Multi-tenant SaaS platform for accounting firms, with superadmin architecture, firms, clients, documents, tax engine and reporting.

Stack: SaaS architecture, multi-tenancy, backend, base de datos, automatización, IA

Value: Product oriented to automate accounting and tax processes.

Concept / development

Supporting architecture map

This operational layer powers the projects: edge, proxy, containers, data, jobs and centralized observability.

Edge & DNS

  • Cloudflare
  • DNS zones
  • TLS / SSL
  • Let's Encrypt
  • WAF / proxy

Reverse Proxy & Routing

  • Traefik
  • Nginx
  • Virtual hosts
  • HTTP/HTTPS routing
  • Certificates

Compute & Hosting

  • Linux VPS
  • Plesk
  • cPanel/WHM
  • AlmaLinux
  • Ubuntu Server

Containers

  • Docker
  • Docker Compose
  • Kubernetes/K3s
  • Portainer
  • Container networks

Apps & SaaS Services

  • WhatsApp API
  • Social API
  • QA Console
  • Chatwoot
  • Admin Panels

Data Layer

  • PostgreSQL
  • MySQL/MariaDB
  • Redis
  • Backups
  • Migrations

Workers & Async Jobs

  • BullMQ
  • Queues
  • Background jobs
  • Retries
  • Rate limits

Observability

  • Grafana
  • Prometheus
  • Loki
  • Promtail
  • PMM

Access & Security

  • SSH
  • Tailscale
  • Firewall
  • CSF
  • iptables

Email Infrastructure

  • Postfix
  • Qmail
  • Exim
  • MailEnable
  • SpamTitan

Virtualization & Backup

  • VMware
  • Proxmox
  • ESXi
  • vCenter
  • Veeam

Storage & DR

  • Longhorn
  • Volumes
  • Backup strategy
  • Recovery flows
  • Stateful workloads