endreendi.com/consulting — infrastructure & linux

Infrastructure and Linux
consulting for teams.

I help design and operate reliable infrastructure based on Linux, virtualization, identity systems, and secure networking — for teams and individuals who want more control over their systems.


Common infrastructure challenges.

If any of these sound familiar, I can probably help.

Cloud to self-hosted migration

Moving services off expensive cloud platforms to infrastructure you own and control.

Proxmox environment design

Planning and deploying Proxmox clusters with proper storage, networking, and high availability.

Identity & authentication

Centralized identity with FreeIPA, Zitadel, or LDAP — single sign-on without cloud dependency.

Linux server troubleshooting

Diagnosing and fixing issues on Linux servers — performance, security, networking, or configuration.

Network segmentation & security

Designing secure internal networks with VLANs, firewalls, and proper service isolation.

Private AI infrastructure

Running local language models and AI tools on your own hardware — private, fast, and under your control.


What I work with.

  • Linux Arch, Debian, RHEL-based, Ubuntu
  • Proxmox VE clusters, ZFS, LXC, KVM
  • FreeIPA directory, DNS, Kerberos, internal CA
  • Zitadel OIDC / OAuth2 identity provider
  • OPNsense firewall, VLANs, VPN
  • Docker / LXC containerized services
  • Ansible automation & configuration
  • AI / LLM stack Ollama, Piper TTS, local models

Everything I recommend has been tested and operated in my own infrastructure lab first. I don't suggest solutions based on theory — I run them.


Remote, documented, practical.

01

You describe the problem

Send me an email or message describing your system and what you're trying to solve.

02

We review together

We do a session via secure screen sharing. I look at your setup and ask questions.

03

I propose a solution

You get a clear plan with practical steps, honest cost estimates, and no unnecessary complexity.

04

Documentation & follow-up

After each session I provide written documentation and recommendations you can act on.

Most consulting is done remotely. On-site visits available in Bucharest, Romania.


Need help with Linux or infrastructure?

Send me an email describing your system and problem. I'll get back to you within 24 hours with an honest assessment.