Bio
NIKOLAOS ILIOPOULOS
Linux SysAdmin | Web Developer | DevOps
📍 Location: Athens, Greece
📧 Email: nicholas@nnyx.io
🔗 Personal Website: nnyx.io
🔗 Dev Website: nnyx.dev
💼 LinkedIn: linkedin.com/in/nicholas
🐙 GitHub: github.com/r41nm4k3r
👨💻 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.
💡 Technical Skills
Linux Administration
- ▹ RedHat | Centos | Ubuntu
- ▹ Linux ARM
- ▹ L.F.S
Web Development
- ▹ WordPress | WooCommerce | Hugo
- ▹ Website Migration
- ▹ CPanel | Plesk
- ▹ MySQL | MariaDB
- ▹ Nginx | Apache | Traefik
Server Management
- ▹ Configuration
- ▹ Optimization
- ▹ Migration
- ▹ Remote Management
- ▹ Backup & Restore
Virtualization
- ▹ VMware ESXi
- ▹ Proxmox VE
- ▹ Docker | Podman
- ▹ LXC Containers
Security & Hardening
- ▹ Firewall Configuration
- ▹ SSL/TLS Implementation
- ▹ VPN Configuration
Automation
- ▹ Bash Scripting
- ▹ Ansible
- ▹ Python
- ▹ Terraform
💼 Professional Experience
Junior I.T.
⚡ PT Systems • 2015 to 2018
📍 [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
🚀 Freelancer • 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
🚀 Freelancer • 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
🚀 Startup W.i.P • 2025*
- Providing digital consulting
- Offering IT services
- Guidance for digital wellbeing
🎓 Education & Certifications
📜 Red Hat Certified Engineer (RHCE)
📜 Red Hat Enterprise Linux Automation with Ansible
📜 CCNA
📜 CCNA Sec
📜 VMware vSphere 6.7 Foundations
🚀 Notable Projects
🔹 WordPress Performance Optimization
- Implemented caching strategies for improved load times.
- Configured Cloudflare and Nginx reverse proxy for better security and performance.
🔹 Automated Server Provisioning
- Developed Ansible playbooks to automate server configurations for staging and production environments.
- Integrated Docker for containerized deployment of web applications.
🔹 Security Hardening for Web Servers
- Conducted penetration testing and security audits for Linux-based web servers.
- Implemented fail2ban, ModSecurity, and SSL/TLS hardening.
🛠 Tools & Technologies
🚀 Linux, WordPress, Apache, Nginx, MySQL, PostgreSQL, Docker, Ansible, Cloudflare, Git, Bash, Python.
📄 References available upon request
🔗 Download PDF CV: johndoe-cv.pdf