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Mirek Gajdečka

Senior IT Consultant • Data Platforms • Linux Infrastructure • Business IT
Teradata Oracle Linux Proxmox UniFi Nextcloud Vaultwarden Nginx Proxy Manager Authelia Home Assistant AdGuard Home Uptime Kuma Jellyfin Synology NAS OpenMediaVault PostgreSQL MariaDB InfluxDB Redis
Location
Prague, CZ
Experience
15+ years in IT operations
Availability
Part-time retainer, remote-first
Incident & RCA
Triage, root cause analysis, stakeholder communication and safe recovery actions.
Performance tuning
SQL and platform analysis, capacity thinking and change proposals.
Automation
Shell, SQL and practical operations automation for repeatable outcomes.
Security-first mindset
Segmentation, reverse proxy, access control, monitoring and restore-tested backups.

Book a consult Download CV LinkedIn

Consulting and hands-on delivery across data platforms and Linux infrastructure: incident handling, performance tuning, change proposals, and cross-team/customer collaboration.

IT support for your business

No in-house IT? I'll handle it — remotely, reliably, with 15+ years of hands-on experience.

Professional services
Offices with sensitive client data
Lawyers, accountants, doctors, advisors — anyone handling confidential client data needs storage chosen carefully. Generic foreign cloud usually isn't enough, and IT has to be designed around that from the start.
  • Workstations, user accounts and access management
  • Storage solution that fits your compliance needs — local, Czech DC, or EU cloud
  • 3-2-1 backup with tested restore procedure
  • Secure remote access for staff working from home
  • Monitoring — you hear about problems first, not your clients
Warehouse & operations
Firms with physical stock
When the warehouse system goes down, orders stop. IT here is a direct part of daily operations — reliability isn't optional.
  • Warehouse software, database setup and maintenance
  • Network for both office and warehouse floor
  • Barcode scanners, terminals, peripheral devices
  • Automated backup of operational data with restore testing
General business
Small offices & s.r.o.
5–20 people, no dedicated IT person. Everything needs to just work — email, shared files, remote access, backups — without anyone having to think about it.
  • Email, shared storage, printing — set up properly once
  • Automatic backups that are actually tested
  • Secure remote access and password management
  • Someone to call when something breaks

Services & pricing

ServicePriceWhat you get
Monthly IT retainer from 20 000 CZK/month Incidents, monitoring, servers, backups, consultations — fixed monthly coverage.
IT audit (one-time) from 5 000 CZK Full review of your IT state, security and backups. Written report with recommendations. Good starting point.
Process automation from 10 000 CZK Shell/SQL scripts, scheduled tasks, monitoring, reporting — things that run themselves.
Backup strategy design from 8 000 CZK Review or design of your backup approach, restore test included.
Monitoring setup from 8 000 CZK Alerting, dashboards, notifications — you'll know the moment something goes wrong.
Linux server admin from 1 500 CZK/hour Installation, configuration, troubleshooting, log analysis.
Database consultation from 1 800 CZK/hour PostgreSQL, Oracle, Teradata — performance, incidents, migrations.

Prices are indicative. Final cost depends on scope, complexity and time required — happy to discuss specifics.

Send an email +420 722 473 180 Remote-first · anywhere in CZ · flexible scheduling

Professional summary

15+ years in IT operations and support, focused on Unix/Linux application environments, database platforms, and monitoring in international teams. My main day-to-day domain is senior Teradata consulting: production support, incidents, performance optimization, and architecture-related changes.

Strong hands-on overlap with Linux infrastructure, Oracle/PostgreSQL databases, monitoring solutions, and automation using shell/SQL scripting. Comfortable bridging engineering and operations: translating incidents into actionable improvements, documented changes and safer operational decisions.

Teradata Oracle PostgreSQL Linux / Unix Zabbix Nagios Virtualization

Experience (selected)

  • Your Edge Digital — Senior Consultant05/2022 – Present • Prague
    Teradata consulting: incidents, performance tuning, customer/team collaboration.
  • Teradata — Consultant02/2020 – 05/2022 • Prague
    Teradata platform consulting and support.
  • DHL IT Services — Senior Application Specialist10/2017 – 01/2020 • Prague
    Primary monitoring for prod/non-prod (Zabbix): upgrades, templates, plugins, expanded checks and operations automation.
  • EmbedIT — Senior Application Support Specialist07/2013 – 08/2017 • Brno
    Unix applications, Oracle DB, WebLogic, deployments, automation, maintenance and PDC/DRC tests, onboarding and training.
  • Tieto — Technical Specialist08/2010 – 06/2013
    L3 support: Unix applications, Oracle DB, BMC platform and Nagios monitoring.

Homelab & Projects

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Self-managed projects

Practical side projects and self-managed implementations that complement my main consulting profile and show current hands-on work across automation, networking, storage and owned infrastructure.

  • Local smart home platform built around Home Assistant, Zigbee2MQTT and MQTT
  • Private cloud and file sync through Nextcloud
  • Self-hosted password management with Vaultwarden
  • Service monitoring and visibility with Uptime Kuma
  • Segmented homelab networking on UniFi with DMZ and reverse proxy
  • Storage and backup layer using Synology NAS and OpenMediaVault
  • Media and utility services including Jellyfin and AdGuard Home
Home Assistant Nextcloud Vaultwarden Uptime Kuma UniFi Proxmox Jellyfin AdGuard Home Synology NAS OpenMediaVault

Homelab infrastructure profile

Security-first design: segmentation, DMZ, reverse proxy, identity/access control, centralized DNS, observability and regular backup/restore testing.

UniFi (segmented VLAN) Proxmox VE Nginx Proxy Manager Authelia Home Assistant Zigbee2MQTT MQTT Nextcloud Vaultwarden Uptime Kuma AdGuard Home Jellyfin Synology NAS OpenMediaVault

Project pages

Home Assistant

Home Assistant

Local smart home platform

A broader smart home project built around local control, dashboards, heating logic, sensors, automations, and practical day-to-day reliability.

 Nextcloud

Nextcloud

Private cloud / file sync

Self-hosted file sync and sharing designed as a private cloud alternative with direct ownership over data and access paths.

 Vaultwarden

Vaultwarden

Self-hosted password manager

A lightweight private password vault setup used to keep credential storage under direct control while retaining the convenience of modern password management.

 Uptime Kuma

Uptime Kuma

Monitoring & service visibility

A practical monitoring layer for service availability, grouped checks and quick operational visibility across self-hosted services.

 UniFi / network segmentation

UniFi / network segmentation

Structured homelab networking

A segmented network layout separating management, homelab, IoT, guest and DMZ roles to keep self-hosted services more structured and safer to expose.

 Homepage dashboard

Homepage dashboard

Internal service portal

A simple internal landing page for core services, tools and infrastructure components used as a convenient operational entry point.

 Proxmox

Proxmox

Virtualization platform

The base virtualization layer for running isolated services, infrastructure utilities and evolving self-hosted workloads across the lab environment.

 Jellyfin

Jellyfin

Self-hosted media server

A private media server setup used as an owned alternative to closed media platforms for local streaming and direct library control.

 AdGuard Home

AdGuard Home

DNS filtering and local DNS control

A local DNS filtering and resolution layer used to control name resolution, reduce noise and keep core services reachable through predictable internal naming.

Contact

LinkedIn: www.linkedin.com/in/mirek-gajdečka-10950856

Email: mirek.gajdecka@gmail.com

Phone: +420 722 473 180

Preferred contact: LinkedIn or email.