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haeniken/README.md

English | Русская версия

Sergey Haeniken

DevOps / DevSecOps / SRE Engineer · Platform Reliability · Business-Focused Delivery

ExperienceAvailabilityScale

Executive Summary

I help teams keep critical systems stable, secure, and cost-efficient.

My focus is measurable impact: uptime, incident reduction, delivery speed, and infrastructure cost control.

Business Outcomes

OutcomeResult
Critical service reliabilityUp to 99.97% availability
Platform scaleOperated 100+ microservices in containerized environments
SaaS infrastructure ownershipSupported 500+ client resources
Performance optimizationReduced CPU/IO load by ~30%
Incident qualityReduced recurring client-facing errors by up to 7.2x
Cost efficiencyReduced infrastructure/storage costs by ~20%
Operational readinessMaintained 24/7 incident response

What You Get

  • safer and faster releases with CI/CD and GitOps;
  • strong production ownership and clear recovery playbooks;
  • better observability and earlier anomaly detection;
  • security hardening integrated into regular delivery flow;
  • practical architecture decisions balancing risk, speed, and maintainability.

Technical Profile

Location

  • Saint Petersburg, Russia (remote format)

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