Bio


NIKOLAOS ILIOPOULOS

Linux SysAdmin | Web Developer | DevOps


๐Ÿ“ Location: Athens, Greece
๐Ÿ“ง Email: nicholas@nnyx.io
๐Ÿ”— Personal Website: nnyx.io

๐Ÿ”— Dev Website: nnyx.dev
๐Ÿ’ผ LinkedIn: linkedin.com/in/nicholas
๐Ÿ™ GitHub: github.com/r41nm4k3r


๐Ÿ‘จโ€๐Ÿ’ป Summary

Experienced Linux System Administrator and WordPress Web Developer with a passion for automation, server optimization, and custom web development. Skilled in maintaining high-performance, secure, and scalable infrastructures. Enthusiastic about automation, vitualization, and cloud technologies.


๐Ÿ’ก Technical Skills

Linux Administration

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  • โ–น RedHat | Centos | Ubuntu
  • โ–น Linux ARM
  • โ–น L.F.S

Web Development

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  • โ–น WordPress | WooCommerce | Hugo
  • โ–น Website Migration
  • โ–น CPanel | Plesk
  • โ–น MySQL | MariaDB
  • โ–น Nginx | Apache | Traefik

Server Management

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  • โ–น Configuration
  • โ–น Optimization
  • โ–น Migration
  • โ–น Remote Management
  • โ–น Backup & Restore

Virtualization

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  • โ–น VMware ESXi
  • โ–น Proxmox VE
  • โ–น Docker | Podman
  • โ–น LXC Containers

Security & Hardening

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  • โ–น Firewall Configuration
  • โ–น SSL/TLS Implementation
  • โ–น VPN Configuration

Automation

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  • โ–น Bash Scripting
  • โ–น Ansible
  • โ–น Python
  • โ–น Terraform


๐Ÿ’ผ Professional Experience

Junior I.T.

โšก PT Systems โ€ข 2015 to 2018
๐Ÿ“ [Athens]

  • Maintained and configured LAMP/LEMP stacks for hosting multiple websites.
  • Managed databases (MySQL, PostgreSQL) and optimized queries for performance.
  • Ensured server uptime and availability through monitoring and proactive maintenance.
  • Provided technical support and troubleshooting for clients and team members.

Senior Linux System Administrator

๐Ÿš€ Freelancer โ€ข 2018 to Present

  • Managed and optimized Linux-based web servers for improved uptime and security.
  • Developed and maintained custom WordPress themes and plugins for high-performance websites.
  • Migrated WordPress sites to self-hosted infrastructure with almost zero downtime
  • Automated deployment processes using Ansible.
  • Implemented CI/CD pipelines for smooth development and staging environments.
  • Conducted security audits and applied best security practices for WordPress and Linux servers.
  • Reduced server costs by 90% through containerization and auto-scaling

WordPress & Hugo Developer

๐Ÿš€ Freelancer โ€ข 2010 to Present*

  • Customized and optimized WordPress themes
  • Ceeated, Customized and optimized Hugo themes
  • Improved site performance by 85% through caching optimization
  • Configure properly custom e-mail adresses

NnyX

๐Ÿš€ Startup W.i.P โ€ข 2025*

  • Providing digital consulting
  • Offering IT services
  • Guidance for digital wellbeing

๐ŸŽ“ Education & Certifications

๐Ÿ“œ Red Hat Certified Engineer (RHCE) ๐Ÿ“œ Red Hat Enterprise Linux Automation with Ansible
๐Ÿ“œ CCNA ๐Ÿ“œ CCNA Sec ๐Ÿ“œ VMware vSphere 6.7 Foundations


๐Ÿš€ Notable Projects

๐Ÿ”น WordPress Performance Optimization

  • Implemented caching strategies for improved load times.
  • Configured Cloudflare and Nginx reverse proxy for better security and performance.

๐Ÿ”น Automated Server Provisioning

  • Developed Ansible playbooks to automate server configurations for staging and production environments.
  • Integrated Docker for containerized deployment of web applications.

๐Ÿ”น Security Hardening for Web Servers

  • Conducted penetration testing and security audits for Linux-based web servers.
  • Implemented fail2ban, ModSecurity, and SSL/TLS hardening.

๐Ÿ›  Tools & Technologies

๐Ÿš€ Linux, WordPress, Apache, Nginx, MySQL, PostgreSQL, Docker, Ansible, Cloudflare, Git, Bash, Python.


๐Ÿ“„ References available upon request
๐Ÿ”— Download PDF CV: johndoe-cv.pdf

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