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Work experience

Tech (Team) Lead / Senior Java Software engineer

from 04.2014 to now (12 years)
EPAM, Львів (IT)

Key Responsibilities & Achievements:
Architectural Leadership & Design: Led the end-to-end system design and architectural evolution of a high-load microservices ecosystem, transitioning from monolithic Ruby on Rails to a reactive Java (Vert.x) architecture.

High Availability & Multi-Region Strategy: Spearheaded a company-wide Proof of Concept (POC) for Active-Active solutions (MySQL, PostgreSQL, YugabyteDB). Evaluated and implemented complex synchronization and sharding strategies.

Cloud Migration: Orchestrated a strategic infrastructure migration from AWS to Azure, ensuring zero downtime and optimizing cloud resource utilization.

Observability & Monitoring: Established a comprehensive observability stack using Grafana, Prometheus, Loki, and Splunk to reduce Mean Time to Recovery (MTTR) and improve system transparency.

Performance Optimization: Leveraged Vert.x event-loop and Redis caching strategies to significantly reduce latency and increase throughput for core business services.

Team Leadership & Engineering Culture:
- Led a cross-functional engineering team, fostering a culture of technical excellence.
- Standardized Code Review processes and enforced Code Quality metrics.
- Implemented Best Practices for Unit Testing (UTs) and integration testing to ensure 90%+ reliability of new deployments.

Technical Documentation: Authored comprehensive system design documents (RFCs, ADRs) and technical specifications to align stakeholders and maintain architectural integrity.

Education

Львівська Політехніка

Електромеханіка, Львів
Higher, from 2002 to 2006 (4 years)

Additional education and certificates

Microsoft Certified: Azure Fundamentals

1 month
Certificate

Knowledge and skills

• Java
• RxJava
• MySQL
• Git
• Redis
• Apache Kafka
• Spring boot
• Spring Framework
• MS Azure
• AWS
• Design system development
• Vert.x
• GitHub
• Docker
• PostgreSQL
• Знання принципів ООП
• Hibernate
• REST API
• SQL
• Grafana
• Splunk
• Jenkins
• Serverless
• AWS Lambda
• Highload
• RabbitMQ

Language proficiencies

English — above average

Additional information

На даний момент розглядаю варіанти додаткового заробітку, з частковою або повною занятістю (up to 40 hours per week) але без чіткого графіку.
Можу виконувати роль middle/senior розробника.