# Zunaid Amin

> Linux Server Administrator and Infrastructure Engineer based in Dhaka, Bangladesh. Available for part-time remote contracts (10–25 hours/week). 4+ years managing production Linux infrastructure at Rocket.net — incident response, performance diagnosis, server hardening, database performance. WordPress Core Contributor since 6.3 and WordPress.org Hosting Team Representative.

## About

- [Portfolio homepage](https://zunaidamin.com/): Services, experience, testimonials, and contact details for hiring Zunaid for part-time Linux infrastructure contracts.
- Contact: zunaid321@gmail.com
- Location: Dhaka, Bangladesh (works async/remote)
- LinkedIn: https://www.linkedin.com/in/zunaidaminenan/
- GitHub: https://github.com/zunaid321
- WordPress.org profile: https://profiles.wordpress.org/zunaid321/

## Services offered

- Linux server administration (Ubuntu, production fleets)
- Incident response and high-CPU debugging
- Database performance diagnosis (MariaDB / MySQL, slow query log analysis, EXPLAIN, indexing)
- Server hardening (SSH, UFW, fail2ban, unattended upgrades)
- Infrastructure automation (Bash, WP-CLI, REST APIs)
- WordPress hosting operations at scale

## Technical writing

- [How I diagnosed a MariaDB query eating 100% CPU on a production server](https://zunaidamin.com/blog/mariadb-100-cpu-query-diagnosis): Complete incident walkthrough — `top`, `mysqladmin processlist`, slow query log, `EXPLAIN`, and the missing composite index that brought a production server from 780% CPU back to normal.
- [All blog posts](https://zunaidamin.com/blog): Infrastructure, incident response, and WordPress community writing.

## Canonical

The canonical domain is https://zunaidamin.com. The domains zunaidamin.dev and www.zunaidamin.com 301-redirect to the canonical.