IT

System Engineer
& IT Consultant

Based in Florence, Italy. Transforming IT infrastructure with modern solutions and expert guidance.

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About Me

Who I Am

I'm Giacomo Landini — Jack. Based near Florence, Italy. Sysadmin by day, adventurer by night.

What I Do

System Administrator & IT Consultant. I design and deploy infrastructures focusing on security, reliability, and automation.

What I Love

Video games, nature, trail running, Ferrari F1, cosmology, and rock music. Also coffee — lots of it.

Where I'm Going

Growing professionally, building innovative solutions with my startup JMMer, and helping others along the way.

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What I Do

System Administration

From bare-metal to virtualized environments, I manage Windows and Linux servers with precision and reliability. My goal: stable, secure, and high-performing systems that just work — so you can focus on what really matters.

IT Security

Security isn't just a checkbox — it's a mindset. I apply proven best practices, smart automation, and proactive monitoring to keep infrastructures resilient against modern threats, ensuring peace of mind for both users and businesses.

Network Solutions

Every millisecond counts. I design, build, and fine-tune networks for speed, scalability, and reliability — from small business setups to complex multi-site infrastructures. Because efficiency is the foundation of everything connected.

Recent Projects

SmartPark

Smart parking. Find, book, and pay — all in one tap.

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Our startup. Tech solutions for a smarter, greener world.

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Beehives in Cloud

Data-driven beehive monitoring to improve fruit crop productivity. Based on satellite analysis and on-board hardware.

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Skills

Systems

  • Windows Server AD, GPO & RDS environments
  • Linux Debian focused · LPIC-1 path · Hardening & services
  • Proxmox HA clusters · LXC & KVM virtualization
  • Docker Compose stacks · Containerized deploys
  • systemd Custom units · Service orchestration

Network & Security

  • TCP/IP Subnetting, VLAN & infrastructure design
  • Zyxel ZCNA Certified · UTM, Nebula & site-to-site VPN
  • pfSense Firewall rules · OpenVPN & HA setups
  • Tailscale Mesh VPN · ACLs & custom DERP relays
  • SSH Key management · Remote access hardening

Cloud & Hosting

  • NGINX Reverse proxy · SSL termination & load balancing
  • Cloudflare DNS & WAF · Origin certs & API automation
  • SSL/TLS Let's Encrypt · Certificate lifecycle
  • Nextcloud Self-hosted cloud · AIO & custom deploys
  • Plesk Hosting panel · Domains, sites & cert management

Dev

  • Python FastAPI · REST APIs & async microservices
  • Bash Automation scripts · Sysadmin tooling
  • Node.js Express backends · Real-time integrations
  • Git GitLab CI · Pipelines & branching strategies
  • PostgreSQL asyncpg · Schema design & backup strategies

Services

  • 3CX Advanced Certified · PBX design, SIP trunking & IVR flows
  • Monitoring Zabbix & N-Able · Custom alerts & dashboards
  • QNAP NAS storage · RAID & snapshot replication
  • Supabase Auth & storage · Open-source BaaS

Automation

  • AI Tools ChatGPT & Claude · API integration & custom workflows
  • CI/CD GitLab CI & GitHub Actions · Automated pipelines
  • Discord Bot Leonhart · Commands & server automation
  • Generators Auto install & update scripts for clients

Get in Touch

Ready to transform your IT infrastructure?

Or email me directly