Evgeny Gorun — IT Portfolio

— About Me

IT Architect and Systems Administrator with over 20 years of experience

I specialize in designing, deploying, and maintaining IT infrastructure of any complexity, helping businesses build reliable, secure, and scalable systems. Beyond infrastructure, I work as a web developer: I build websites — including custom themes and modules — and independently design and maintain Linux-based server infrastructure, ensuring the security, performance, and fault tolerance of web projects.

I combine technical expertise with a business-minded approach to deliver real results and drive company growth.

Windows ServerLinuxWeb DevelopmentProxmox VEVMware / Hyper-VMikroTikActive DirectoryZabbixGrafanaPowerShellDockerSQL / MySQLBitrix24

Competencies

Competency Map

20+ years of hands-on experience — from networking and servers to virtualization, monitoring, automation, and security. Select an area to explore the details.

WordPress (Themes + Plugins)Expert

PHPAdvanced

HTML5 / CSS3Advanced

Responsive DesignAdvanced

JavaScriptAdvanced

MySQLAdvanced

MikroTik / RouterOSExpert

Routing / VLANExpert

WireGuard / VPNAdvanced

Firewall / NATAdvanced

Wi-Fi / Access PointsAdvanced

CiscoProficient

Windows ServerExpert

Active DirectoryExpert

Linux (Ubuntu / Debian)Expert

DNS / DHCPExpert

Nginx / ApacheAdvanced

Email (Postfix / Exchange)Advanced

Proxmox VEExpert

VMware vSphereAdvanced

Hyper-VAdvanced

Docker / ContainersAdvanced

Clustering / HAAdvanced

ZabbixExpert

GrafanaAdvanced

Alerting / TelegramAdvanced

LoggingAdvanced

PrometheusProficient

PowerShellExpert

BashAdvanced

Telegram BotsAdvanced

SQL / ReportingAdvanced

AnsibleProficient

Backup (Veeam)Expert

Fault Tolerance / FailoverExpert

SSL / CertificatesAdvanced

Access ControlAdvanced

Auditing / HardeningAdvanced

Portfolio

Featured Projects

Completed projects and achievements from years of practice.

🖥️

Infrastructure

Systems Administration

Servers, virtualization (VMware/Hyper-V/Proxmox), Active Directory, networking, IP telephony, and corporate services. Zabbix monitoring, information security and data protection, backup.

⚙️

Automation

Process Automation

Building reporting modules and automating business processes: system integration, data processing and exports, scheduled runs with notifications. PowerShell, Python, Bash, SQL, VBA, REST API.

🖧

Networking

Enterprise Network Lab (MikroTik)

MikroTik hEX S (RB760iGS) and CRS326-24G-2S+RM managed switch. 802.1Q VLANs with inter-VLAN routing, OSPF dynamic routing, least-privilege firewall/NAT, WireGuard VPN, and CHR virtual routers on Proxmox.

📊

Monitoring

Two Monitoring Stacks — Zabbix and Prometheus

Built two monitoring systems for a real fleet (cloud server + home Proxmox hypervisor + virtual machines): Zabbix 7.0 with a custom Vue/Nuxt dashboard, and Prometheus + Grafana. Both with public demos and internal-infrastructure masking. WireGuard, BFF architecture, Let's Encrypt. Zabbix dashboard → · Grafana →

🌐

Web Development

johngorn.ru — portfolio

This site: a custom WordPress theme built from scratch — markup, PHP/MySQL, responsive design, and deployment on a self-managed Linux server.

📹

Video Surveillance

Video surveillance — full cycle

Full cycle: from a self-hosted equipment online store to on-site installation and configuration. Store built on Medusa + Next.js — catalog, faceted filters, YooKassa payments, self-hosted deployment. Plus turnkey design and installation: IP/analog, recorders, networking and PoE, remote access. Hikvision, Dahua. Open store →

💬

MESSENGER

Self-Hosted Messenger — Matrix with Calls

A federated self-hosted messenger on the Matrix protocol: Synapse and PostgreSQL in a Proxmox LXC container, published through nginx with Let's Encrypt on a cloud edge node and a WireGuard tunnel to the home server. End-to-end encryption, invite-only registration, federation with other Matrix servers. One-on-one calls and group video conferences via the MatrixRTC stack: LiveKit SFU, coturn (TURN) and JWT authorization. Nightly backups with restore testing, monitored by Zabbix and Grafana. Open →

🤖

Telegram Bots

Four production bots in Python (aiogram 3): a system alert bot (backups, Zabbix, Grafana), a public info bot with a Telegram Mini App, an online-store bot, and a SaaS notification bot. Telegram API access from Russia via a custom proxy layer; alert delivery over SSH with forced-command.

📈

SAAS

uptime — Website Monitoring as a Service

My first SaaS: users sign in via Telegram, add their own sites and get availability, SSL and speed checks every 5 minutes with Telegram alerts. Under the hood — a multi-tenant architecture (Nuxt 3 + PostgreSQL in an LXC container), a probe worker in the cloud, public status pages with an uptime badge, a dashboard with incident history. SSRF protection, rate-limiting, CI/CD and backups with restore testing. Open →

🏗️

IaC

Infrastructure as Code

9 idempotent Ansible roles with CI. A heterogeneous Proxmox fleet (containers and virtual machines) and two monitoring stacks are described as code: provisioning, configuration, monitoring, alerting, SSH hardening, and backups are reproducible from the repository, checked in CI (ansible-lint), and version-controlled. Repeat runs make zero changes; a service is restored from its role in seconds; production changes go through preview and rollback.

home lab

My Home Lab

A lab where I test new technologies and solutions before deploying them in production. Hover over a node to see what it does.

🌐InternetExternal uplink and public static IP

🛡️MikroTikNetwork layer of the lab. MikroTik hEX S (RB760iGS) router + CRS326-24G-2S+RM managed switch on RouterOS: 802.1Q VLAN segmentation and inter-VLAN routing, OSPF dynamic routing, least-privilege firewall/NAT, WireGuard VPN, topology practice on CHR virtual routers.

🖥️Proxmox VEHypervisor: virtual machines and containers, fault tolerance, backups

🪟Windows Server 2022Active Directory, domain services, GPO

🐧Ubuntu ServerLinux services, web servers, scripts

🐳DockerService containerization, fast deployment

📈ZabbixServer and network monitoring, alerts

📊GrafanaDashboards and metrics visualization

🔐WireGuardSecure VPN access to the lab

🗄️MySQLDatabases, replication

☁️NextcloudCloud storage and collaboration

EvgenyGorun

IT Architect and Systems Administrator with over 20 years of experience

Competency Map

Featured Projects

Systems Administration

Process Automation

Enterprise Network Lab (MikroTik)

Two Monitoring Stacks — Zabbix and Prometheus

johngorn.ru — portfolio

Video surveillance — full cycle

Self-Hosted Messenger — Matrix with Calls

Telegram Bots

uptime — Website Monitoring as a Service

Infrastructure as Code

My Home Lab

Infrastructure Status

What I Automate

Automation Lab

Telegram Bot

Grafana

PowerShell

Proxmox VE

Security Audit

Docker

Screenshots from Practice

From Problem to Solution

Analysis

Design

Implementation

Support

Work Experience

Systems Administrator / IT Engineer

Automation & Development

Articles & Notes

How I Built a SaaS Website Monitor in One Day

Self-Hosted Matrix Messenger: Synapse, Federation and Video Calls

Infrastructure as Code: 9 Ansible Roles That Rebuild My Monitoring in Minutes

Two Monitoring Stacks from Scratch: Zabbix + Vue Dashboard and Prometheus + Grafana

Turnkey Websites: From Design to Self-Hosted Infrastructure

PowerShell 7.6: New Features and Practical Tips for System Administrators

Get in Touch