Hello, I'm Andrew Kozlowskiy

Infrastructure Engineer & Platform Architect

andrew.kozlowskiy@gmail.com +36 30 151 5911 Budapest, Hungary
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About Me

Infrastructure Engineer with 5+ years of experience building reliable, observable, and fault-tolerant systems that enable development teams to deploy faster and more confidently. I specialize in Kubernetes infrastructure, platform engineering, and creating tools that improve developer experience while maintaining high system reliability.

Throughout my career, I have architected and maintained critical infrastructure for high-load production systems, working with everything from bare-metal Kubernetes clusters to cloud platforms. I've built custom tooling to enforce infrastructure standards, migrated legacy systems with near-zero downtime, and designed monitoring solutions that reduced mean time to recovery by 40%. My focus is always on building platforms that developers love to use while ensuring reliability for enterprise clients.

I hold a Master's degree in Computer Science from ITMO University and am a Certified Kubernetes Administrator (CKA). When I'm not working on infrastructure challenges, I enjoy building side projects, exploring new technologies, and contributing to the developer community. I'm passionate about creating systems that just work— allowing teams to focus on building great products rather than fighting their infrastructure.

Professional Experience

Senior Infrastructure Engineer

Ivinco Mar 2023 - Apr 2025
  • Migrated legacy monitoring infrastructure from Nagios to Prometheus/Grafana stack, improving observability and reducing mean time to recovery by 40%
  • Designed and implemented internal monitoring tool for Kubernetes API access logging and visualization, improving cluster security and compliance
  • Built and maintained CI/CD pipelines using GoCD and GitHub Actions, improving deployment reliability and simplifying development workflows for staging and production environments
  • Migrated high-load ClickHouse database installation to Kubernetes with near-zero downtime, significantly reducing hardware costs while maintaining performance
  • Deployed and maintained bare-metal Kubernetes clusters using Rancher and Ceph storage, ensuring high availability for Big Data infrastructure
Kubernetes Rancher Prometheus Grafana ClickHouse GitHub Actions Helm

Infrastructure Engineer

Flant Sep 2020 - Mar 2023
  • Maintained high availability infrastructure for enterprise clients, proactively monitoring systems and responding to incidents to ensure reliability and minimize downtime
  • Led migration of multiple client applications to Kubernetes and Helm, increasing deployment flexibility and enabling faster rollouts
  • Implemented GitOps workflows using GitLab CI and Werf across 15+ client projects, resulting in more predictable delivery, faster rollbacks, and improved infrastructure consistency
  • Automated container infrastructure provisioning with Ansible, enabling rapid environment setup for new clients and reducing deployment time by 60%
  • Supported data-intensive systems including PostgreSQL, MySQL, Redis, RabbitMQ, and Kafka, ensuring high data availability and performance
Kubernetes Helm GitLab CI Werf PostgreSQL Ansible Prometheus

Software Engineer

Dell EMC Nov 2018 - Sep 2020
  • Investigated and resolved high-severity issues for Fortune 500 enterprise clients, ensuring minimal data loss and maintaining high system availability for enterprise-class data storage systems
  • Reduced recurring incidents by identifying root causes and proposing systemic fixes, improving overall platform stability
  • Authored knowledge base articles adopted company-wide, reducing troubleshooting time for similar issues by 80%
  • Deployed and maintained CI/CD infrastructure with Jenkins, configured automated backups, and implemented Prometheus-based monitoring for internal projects
  • Introduced containerization with Docker and Kubernetes to internal team as part of modernization initiative
Jenkins Docker Kubernetes Prometheus Linux Python

Skills & Expertise

Containers & Orchestration

Kubernetes Docker Rancher Helm Werf

CI/CD & Automation

GitLab CI/CD GitHub Actions GoCD Ansible Bash Scripting

Monitoring & Observability

Prometheus Grafana Alertmanager ELK Stack Loki

Databases & Storage

PostgreSQL MySQL ClickHouse MongoDB Redis Kafka

Cloud & Infrastructure

AWS Bare Metal Ceph Proxmox Linux Systems

Languages

Russian (Native) English (Fluent)

Certifications

  • Certified Kubernetes Administrator (CKA) - CNCF, May 2021
  • AWS Partner: Accreditation (Technical) - AWS, Sept 2022
  • AWS Partner: Cloud Economics Accreditation - AWS, Nov 2022

Education

Master of Science in Computer Science

ITMO University

2016 - 2018

  • Specialized in distributed systems and infrastructure engineering
  • Saint Petersburg, Russian Federation

Bachelor of Science in IT in Economics

Saint Petersburg State University of Finance and Economics

2012 - 2016

  • Focused on information technology and business systems

Exchange Program - International Business

Tampere University of Applied Sciences

2015

  • International business exchange program
  • Tampere, Finland

Featured Projects

Kubernetes Mission Control

Self-made Kubernetes admission controller plugin that enforces application standards and logs API-server requests for compliance analytics. Improves cluster security and helps maintain infrastructure consistency.

Go Kubernetes API Server Admission Control

VPN Solution

Cloud infrastructure and deployment solution for VPN services. Automated setup, configuration, and management of VPN infrastructure in cloud environments.

Cloud Infrastructure VPN Automation Networking

Telegram Mini App (Web3)

Web3 networking application built as a Telegram Mini App. Implemented complete CI/CD pipeline, monitoring stack, automated Telegram alerting, and deployment automation.

Telegram Bot API CI/CD Monitoring Web3