Mykhailo Afanasenko

Mykhailo Afanasenko

DevOps engineer/Linux since 2004

Location
Ukraine·UTC+2/+3·Remote
Languages
Ukrainian·English
Status
Open to freelance and contract work
Contact

Serving in the Armed Forces of Ukraine since 2022.

Twenty years of Linux infrastructure — for a domain registrar, a payment provider, hosting and product companies — and since 2021, Kubernetes platform and DevOps work under contract.

I keep systems running: servers, databases, web stacks, deployment pipelines and the automation that ties them together.

Experience

  1. Feb 2022 — present

    Armed Forces of Ukraine

    On active service.

  2. Nov 2021 — present

    DevOps Engineercontract, under NDA

    Kubernetes platform work, infrastructure as code and observability for a client in Kyiv.

    Kubernetes · Terraform · Ansible · Traefik · Prometheus · Grafana · ELK · Jaeger · Consul · Vault · Rundeck
  3. 2005 — present

    Unix Administratorsys-admin.com.ua, freelance

    Independent infrastructure work for small and mid-size clients, alongside every role below.

  4. Sep 2017 — Nov 2020

    Quantum Projects

    Nov 2018 — Nov 2020

    Head of Technical Department

    Led the technical team; backend development in Python and serverless on AWS.

    Python · Django · Flask · REST · AWS Lambda
    Sep 2017 — Nov 2018

    System Administrator / DevOps

    Containerised delivery, CI/CD, monitoring, logging and mail infrastructure for the company's products.

    Docker · Ansible · Jenkins · nginx · OpenResty · Lua · PostgreSQL · Elasticsearch · Grafana · Nagios · Postfix · DKIM/DMARC/SPF · G Suite
  5. Aug — Dec 2015

    Unix System AdministratorWnet

    Administered a Proxmox cloud and Ceph storage cluster, built Ubuntu terminal servers on xrdp, and supported Unix servers for corporate clients.

    Proxmox · Ceph · Ubuntu · xrdp
  6. Jul 2012 — Apr 2014

    Unix AdministratorNIC.UA

    Domain registrar and hosting provider.

  7. Nov 2010 — Jul 2013

    Unix AdministratorDownload.ua

    Software download portal.

  8. Nov 2010 — Jun 2012

    Unix AdministratorInterKassa

    Payment aggregator.

  9. Feb 2009 — Mar 2010

    Unix AdministratorGitis LLC / IT-Star LLC

  10. Jan — Nov 2008

    Information Security AnalystKP AKSI

Stack

Operating systems
CentOS / RockyUbuntuDebian
Containers
DockerKubernetesHelmArgo CD
Web & proxy
nginxTraefikHAProxyOpenRestyApache
Data
PostgreSQLMySQL / PerconaMongoDB
Observability
PrometheusGrafanaLokiELKJaegerZabbix
CI/CD & IaC
GitLab CIJenkinsAnsibleTerraform
Infrastructure
ProxmoxKVM / libvirtCephVaultConsulAWSCloudflare
Networking
BINDWireGuardMikroTiknftablesIPv6
Programming
bashPythonGoLuaDart / Flutter
IoT
ESP32ESPHomeMQTTHome Assistant
AI tooling
Claude Coden8n

Open source

AlertLight

ESP32-S3 device that shows live air-alert status for a chosen Ukrainian region alongside planned power-outage schedules, with RGB notifications and web configuration.

C · ESP32-S3 · ST7789

power-exporter

Battery metrics exporter for Linux. Auto-discovers batteries from sysfs and ships charge, health, voltage and cycle counts to Prometheus or InfluxDB.

Go · Prometheus · InfluxDB

Gnome-UkraineAlert-Plugin

The same air-alert indicator as a GNOME Shell extension, living in the top panel with per-region settings.

JavaScript · GNOME Shell

polybar-wireguard

Polybar module that lists every WireGuard interface found in the config directory and toggles each one from the bar.

Shell · WireGuard

All repositories →

Certificates

  • Claude Code in ActionAnthropicverifyJan 2026
  • Flutter Mobile DeveloperRobotDreamsverifyDec 2023
  • IPv6 CertificationHurricane Electricview
  • Python ProgrammingStepikviewMay 2018

Contact

Email is the fastest way to reach me.