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Work experience

SRE/DevOps

from 05.2025 to now (10 months)
AI startup Metrix, Інші країни (IT)

- Designed and maintained infrastructure for an AI startup, including VPS setup, virtualization, and Kubernetes cluster management.
- Implemented PostgreSQL WAL streaming for reliable replication and disaster recovery.
- Developed custom agents and RPC tools to streamline communication between distributed services.
- Engineered solutions that significantly improved product performance and scalability, ensuring faster response times and higher throughput.
- Established and enforced security best practices, including access control, firewall segmentation, and credential management.
- Collaborated effectively within a distributed international team, ensuring smooth deployment processes and operational handoffs across multiple time zones.
- Automated CI/CD pipelines and monitoring workflows to increase reliability and reduce manual overhead.
- Documented runbooks and operational guidelines to support reproducibility and transparent diagnostics.
- Architected and deployed a complete Data Warehouse (DWH) ecosystem, integrating ingestion, orchestration, storage, and visualization layers.
- Data Ingestion Layer: Configured Kafka + Zookeeper for real-time event streaming and CDC pipelines, ensuring reliable buffering and high-throughput data capture.
- Orchestration Layer: Implemented Apache Airflow with PostgreSQL (metadata) and Redis (Celery broker), managing ETL/ELT workflows, DAG scheduling, retries, and error handling.
- Storage Layer:
- Designed MinIO (S3-compatible) as a raw data lake, backup repository, and archival solution.
- Optimized ClickHouse OLAP cluster for analytical queries, time-series data, and reporting dashboards.
- Visualization Layer: Integrated Grafana for system monitoring and alerting, and Metabase for BI analytics and self-service reporting.
- Networking & Security:
- Built secure Docker networks with controlled port mappings for inter-service communication.
- Applied RBAC, TLS/SSL, secrets management, encryption at rest, audit logging, and VPN access for production-grade security.
- Scalability & High Availability:
- Configured horizontal scaling of Airflow workers and Kafka brokers.
- Designed ClickHouse replication/sharding, PostgreSQL master-slave replication, Redis Sentinel/Cluster, and MinIO distributed mode.
- Monitoring & Metrics: Established observability for system, application, and business metrics (CPU/memory, Kafka lag, DAG success rates, query performance, SLA compliance).
- Disaster Recovery: Automated backup strategies for Docker volumes, configurations, and ClickHouse datasets, with documented recovery procedures.
- Cost Optimization: Applied compression, retention policies, lifecycle rules, and log cleanup to reduce infrastructure costs while maintaining performance.

Python developer

from 06.2023 to 07.2024 (1 year 2 months)
Exist.ua, Київ (Роздрібна торгівля)

Development and implementation of a data transfer and synchronization service.
Create and support of solutions for adding payment systems for a trading platform.
Solution of operational tasks (development, testing and deployment).
Tech stack
Databases: PostgreSQL, Google Cloud Store, BigQuery, Redis
Technologies: Python, Google Cloud, K8s, Elasticsearch
Tools: Django(DRF), Celery(deferred/periodic tasks), Cloud SDK, pytest

Python developer

from 02.2022 to 05.2023 (1 year 4 months)
Namecheap, Інші країни (IT)

Create and support control plane for cPanel shared hosting servers and services, as well as common ecosystem packages.
Tech stack
Databases: MySQL, Amazon S3
Technologies: Python, AWS, Docker
Tools: Django(DRF), pydantic(validation), Celery(deferred/periodic tasks), RabbitMQ(as message broker), Amazon SQS(managed message queue), Amazon SNS(pub/sub service), Prometheus/Grafana(monitoring system), unittest

Fullstack software engineer

from 09.2019 to 02.2022 (2 years 6 months)
NIK Elektronika, Київ (Енергетика)

Integration of software into production processes, necessary for automation of function testing of manufactured devices:
- development of client-server software based on Python 3.x under Linux for on-line process management;
- creation of new API parts of internal servers for managing and monitoring the business logic of development (ERP system) with support for FastAPI, SQLAlchemy as a backend and React(js) as a frontend part of the project;
- refactoring and optimization of the monolith of source systems implemented on Django;
- development of interactive visualization systems (HMI) for the development and management of processes using web technologies (React, WebSockets);
- Document service
Databases: PostgreSQL
Technologies: Python, Docker
Tools: Django(DRF), pydantic(validation), Pytest

- Print service
Databases: PostgreSQL
Technologies: Python, Docker
Tools: Django(DRF), pydantic(validation), Celery(deferred/periodic tasks), Pytest

- Token service
Databases: Redis
Technologies: Python, docker
Tools: FastAPI(rest), SQLAlchemy(ORM), pydantic(validation), Pytest

- Applications for monitoring the states of business processes
Databases: Redis, PostgreSQL
Technologies: Python, docker
Tools: FastAPI(rest), SQLAlchemy(ORM), pydantic(validation), Pytest

Education

Донецький Національний Університет ім. М. Туган-Барановського

Факультет готельно-ресторанного бізнесу, спеціальність - "Харчові технології", Донецьк
Higher, from 2007 to 2012 (5 years)

Additional education and certificates

Haxlet.io

2016 6 місяців

Knowledge and skills

• Python
• Django
• PostgreSQL
• Django Rest Framework
• Scrapy
• Docker
• MySQL
• SQL
• JavaScript
• Git
• REST
• SQLite
• Знання принципів ООП

Language proficiencies

• English — average
• Ukrainian — fluent