LEO DANDY

DevOps Engineer
Yogyakarta, Indonesia GMT+7
Production Infrastructure Stack
Terraform ──┬── AWS Lightsail

├── RDS PostgreSQL

└── Firebase Auth

GitHub Actions ──── 60+ Production Sites

Documentation ──── Team Knowledge Base

Selected Work

01

VPC Networking Challenge

The 8-hour systematic debugging session that taught me more than any certification. Cross-VPC peering, NAT gateway limitations, and why sometimes the "wrong" solution is actually right.

Documented the whole thing so the team won't waste 8 hours next time.

Terraform · AWS Lightsail · RDS · VPC Peering · Security Groups
02

Multi-tenant Firebase Architecture

Role-based auth across three environments for restaurant management system. Custom claims, multi-project deployment strategy, and the challenge of keeping offline-capable Raspberry Pi clients in sync.

Zero auth-related incidents in 8 months of production use.

Firebase Auth · Firestore · React · Fastify · Raspberry Pi
03

CI/CD for 30+ WordPress Sites

90% error reduction. 60% less manual deployment work. GitHub Actions workflows that actually work in production, not just in demos.

Reusable workflow now used across the entire agency.

GitHub Actions · WordPress · GitLab CI/CD · Automated Testing
04

Emergency Server Recovery

4-hour rescue mission during critical campaign launch. Compromised WordPress site, malicious code cleanup, database sanitization, security hardening, automated backups. Completed with 30 minutes to spare.

Campaign launched successfully. Client still sends referrals.

Security · WordPress · Incident Response · Backup Systems
05

WooCommerce Performance Surgery

From 8+ seconds to 2.1 seconds. Database cleanup (400MB to 50MB), image optimization (8.2MB to 1.4MB), strategic caching. Client reported 35% conversion increase.

Same approach now applied to all client sites as preventive maintenance.

WordPress · MySQL Optimization · Caching · Performance

Core Capabilities

Infrastructure as Code
  • Production Terraform deployments
  • Multi-environment strategies
  • State management
  • Module development
AWS Networking
  • VPC architecture & troubleshooting
  • Security group configuration
  • Lightsail, RDS, EC2, S3
  • Cross-account connectivity
CI/CD Automation
  • GitHub Actions (expert)
  • GitLab CI/CD
  • Automated testing integration
  • Zero-downtime deployments
Application Stack
  • LEMP/LAMP optimization
  • WordPress/Laravel/Symfony
  • MySQL/PostgreSQL tuning
  • Nginx/Apache configuration
Platform Engineering
  • Firebase multi-tenant apps
  • Docker containerization
  • Linux administration (10 years)
  • DigitalOcean infrastructure
Reliability Engineering
  • 99.7% uptime maintained
  • <15min incident response
  • Systematic troubleshooting
  • Production documentation

Info

Particularly interested in teams that value systematic problem-solving, infrastructure reliability, and comprehensive documentation.

hello@leo-rio.com