SagneoAleksandr Kholmanskikh

Aleksandr Kholmanskikh / Professional profile

IT Infrastructure & Security Operations

Systems support and security-minded operations across Windows, Linux, networking, cloud infrastructure, and Python automation.

Open to IT infrastructure, systems support, and entry-level security operations opportunities.
View selected work Contact Aleksandr

Capabilities

Operational foundation

Practical support skills, security fundamentals, and disciplined troubleshooting presented separately from home-lab project evidence.

Professional foundation

Windows and Linux support, access fundamentals, networking, technical documentation, and clear escalation when an issue exceeds scope.

Practical security development

Endpoint and log review, alert triage, bounded evidence handling, and repeatable workflows practiced in an isolated VMware lab.

Systems support

Windows and Linux administration, service checks, permissions, troubleshooting, and recovery-oriented handoff.

Identity & endpoints

Account lifecycle basics, least-privilege thinking, endpoint review, and careful handling of access changes.

Security operations

Alert and log analysis, triage notes, case workflow, evidence boundaries, documentation, and escalation.

Cloud & automation

Oracle Cloud, networking, Python and shell tooling, validation, monitoring, and repeatable operational tasks.

Selected work

Security and operations evidence

Home-lab and project work that demonstrates practical analysis, administration, automation, and secure operating habits.

All repositories
Primary proof pointSynthetic isolated lab

SecOps workbench / Defensive training workflow

Sagneo SecOps Workbench

An isolated VMware lab for synthetic alert review, documented triage, case handling, and bounded evidence collection. Simulated control only. This training lab uses synthetic data; no production SOC authority is implied.

Demonstrates Alert triage · case workflow · evidence integrity

  • Python
  • FastAPI
  • Suricata
  • SQLAlchemy
  • SQLite
  • Alembic
  • Docker Compose
  • VMware
View repository
Live systemRead-only

Linux operations / Security visibility

Sagneo PortGuard

Read-only Linux security and operations dashboard for service, network, and host visibility.

Demonstrates Host visibility · service health · deployment discipline

  • Linux
  • Docker
  • PostgreSQL
  • Flask
  • Nginx
Repository Live system
Public repositoryHome lab

Private infrastructure / Monitoring

Sagneo Docker Dashboard

A WireGuard-only home-server control plane for authenticated access, service monitoring, backups, and migration work.

Demonstrates Private access · service operations · recovery workflows

  • Docker Compose
  • WireGuard
  • Authelia
  • AdGuard Home
  • Nginx
  • Homepage
  • File Browser
  • qBittorrent
  • Kopia
View repository
Public repositoryBounded automation

Oracle Cloud / Python CLI

OCI A1 Flex Hunter

Safe-by-default tooling for bounded Oracle Cloud Ampere A1 Flex launch attempts when capacity is available.

Demonstrates Guardrails · retry control · operational automation

  • Python
  • OCI SDK
  • CLI
  • pytest
  • systemd
View repository

Professional links

Background and contact

Public destinations for Aleksandr Kholmanskikh's professional context, code, and direct communication.

Public profile

GitHub

Code, repositories, and technical documentation.

Open GitHub
Professional profile

LinkedIn

Experience, education, technical focus, and professional network.

Open LinkedIn
Available by request

Resume

Request the current resume directly by email.

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Direct contact

Contact Aleksandr

For employment, project, and professional inquiries.

[email protected]