Alexander Gusarov

DevOps / Infrastructure Engineer

DevOps engineer with hands-on production experience: Kubernetes, 750+ Linux servers via Ansible, IaC on AWS, and production monitoring from scratch. Dev background (14 years) means I understand both sides of the pipeline.

Contacts
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Achievements

  • Automated infrastructure for 750+ Linux servers using Ansible and Kubernetes, reducing manual operations by ~80%
  • Reduced deployment time from 8 minutes to 2 minutes (−75%) through CI/CD pipeline optimization
  • Reduced MTTR by 60% through centralized monitoring and alerting
  • Reduced Docker image size from 500MB to 200MB improving build and deployment performance
  • Replaced manual infrastructure health checks with automated service monitoring (Go + PostgreSQL)
  • Responded to production incidents including SSH attacks with 1.5–2 minute SLA response

Experience

InfoScale Dec 2024 — Jan 2026
DevOps Engineer
  • Monitored and maintained 750+ Linux servers (Selectel VPS and bare metal) — network interfaces, ports, access management, and incident response
  • Managed Kubernetes clusters on Yandex Cloud and self-hosted (GitLab, Matrix, Keycloak, Vault); wrote and maintained Helm charts
  • Built Terraform infrastructure for ~20 AWS services ($550 → $300/month); wrote custom modules, provisioned ClickHouse; Ansible for per-instance configuration
  • Optimized CI/CD across multiple repos (GitHub Actions + GitLab CI); unified pipeline structure reduced deploy time from 8 to 2 minutes
  • Built observability stack from scratch — VictoriaMetrics probes, Prometheus alerting, custom Grafana dashboards; AlertManager integrated with Telegram and Matrix
  • Developed and deployed SaaS monitoring service (Go + Gin/GORM + React) — ping, domain, SSL checks with configurable intervals (10s–24h)
  • Responded to SSH brute-force attacks via KVM live access, port blocking, user rotation, and timeout configuration
  • Grew infrastructure team from 3 to 6 engineers; mentored 3 junior members
AZNResearch Jul 2022 — Oct 2023
Fullstack Engineer
  • Developed backend services with .NET Core + EF Core; built REST APIs for internal government and enterprise systems
  • Introduced Git workflow, GitLab CI pipelines and Docker for dev environments
  • Improved team productivity by ~25%
Project Tech Feb 2017 — Oct 2019
Software Engineer / Co-Founder
  • Built multiplayer backend for Bhop Jump (on-prem master server + Google Cloud); P2P + dedicated servers up to 16 players
  • Delivered 10+ production projects including games and business software
  • Deployed services using Docker; used macOS VMs for iOS build pipelines