I'm in charge of six other people, carrying out administrative work, project management, and I'm motivating them to perform better.

• Ondřej Moravec (senior .NET developer)
• David Mádle (senior Angular developer)
• Jan Macík (senior DB specialist)
• Milan Kunderlík (senior system administrator)
• Ondřej Hromádka (analyst & project manager)
• Michal Černošek (support & tester)

My ultimate hobby is building servers, testing them, and benchmarking them.

• With a very small budget we did manage to make the infrastructure from 1Gb/s ethernet and 10Gb/s SFP+ switches
• Two independent 1Gb/s switches are used for corosync, another one for IPMI
• 10Gb/s switches are used for internal LAN network
• A 47TB Ceph storage is connected using a direct QSFP+ 40Gb/s network (without a switch)
• Servers are 8 x Intel(R) Xeon(R) CPU E3-1230 v6 @ 3.50GHz with 64GB RAM (Supermicro X11SSL-F)
• The servers cost less than 500USD (most money was spent on storage)
• We were limited by the tiny budget, but there were no compromises in conectivity, storage, memory, and computing power
• The lack of a redundant power supply is balanced by SW high availability
• Fitting the given task, using the given space I managed to create the most punk server assembly (judge for yourself)
• Find Waldo in the picture (it's the backup server), the picture shows a total of six servers

I do administer the host's systems running containers and virtual machines.

• Servers are arranged in high availability cluster using Proxmox Virtual Environment
• Servers are using Ceph storage in a 40Gb/s QSFP+ mesh network
• Virtual servers are using LXC containers and KVM virtual machines (to save some resources, we are using lot of containers)
• Do you want to see some live data from my servers?
• Click on the images to get online data! (visualization is using InfluxDB and Grafana)

I run these systems to support the applications written by developers or to support other internal applications.

• Firewall (SNAT, DNAT, PAT and Port Forwarding, SQM QoS, Security)
• DNS / DHCP (local network management)
• Wireguard (connecting developers and administrators to the server room network)
• OpenVPN / IPSec (interconnection of different server sites with each other)
• Proxmox Mail Gateway (email security platform )
• Bacula / Proxmox Backup Server (enterprise backup solution)
• Zabbix (network and application monitoring platform)
• Nginx / Nginx Proxy Manager (reverse proxy, SSL termination, client-side certificate authentication, certificate management)
• Docker / Portainer (application containers / container management system)
• Boring Proxy / frp / Zero Tier (reverse proxy and a tunnel manager / application to create and manage virtual software-defined networks to connect more then 500 external devices behind firewalls)
• Porteus Kiosk / DietPI (running desktops in kiosk mode)
• Microsoft SQL Server (relational database)
• MariaDB (relational database)
• PostgreSQL (relational database)
• MongoDB (document-oriented database)
• InfluxDB (time series database)
• Grafana (analytics & monitoring solution)
• Redis (in-memory data structure store)
• Kafka / Confluent (distributed event streaming platform)
• Greylog (log management solution)
• Sentry (application monitoring platform)
• SSIS ETL (Microsoft SQL Server Integration Services)
• SSAS BI (Microsoft SQL Server Analysis Services)

At the moment, I take care of and customize these applications.

• Redmine (project management web application)
• XWiki (enterprise wiki platform)
• Mattermost (communication, collaboration, and workflow orchestration platform)
• Nextcloud Hub (content collaboration platform)
• ONLYOFFICE Docs (online editor for text documents, spreadsheets, and presentations)
• iRedMail (mail server platform with webmail, calendar, contacts, and ActiveSync)
• WordPress (content management system )
• Matomo (web analytics application)
• Invoice Ninja (invoicing web application)
• Jitsi (voice, video conferencing and instant messaging applications)
• Gitlab (DevOps software)
• Sendy / OpenEMM (newsletter application / email marketing platform)

As a team leader of SW developers and a project manager, I did manage several projects.

• Sports Betting platform
• Matatu (ugandian card game)
• MOT (desktop and mobile app for managing hardware on branches and repair workflow)
• Virtual Soccer (virtual sports betting)
• Odds monitoring (adjusting odds)
• SSIS ETL (SQL Server Integration Services)
• SSAS BI (SQL Server Analysis Services)
• Reporting system (.NET backend, Angular frontend, Telerik Kendo UI libraries)