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Profile

I am a highly skilled Java Developer with 5+ years of experience, specializing in backend development and database optimization. I help businesses build scalable, high-performance applications and streamline data processing.

Work Experience

• EPAM Systems | February 2022 – December 2024
  Java Developer

  • Developed and maintained multiple brands, enhancing functionality and performance.
  • Designed and optimized data aggregation services to process and unify location data.
  • Identified and fixed critical bugs, ensuring application stability.
  • Participated in service migrations to new architectural concepts, improving scalability and fault tolerance.

• Avenga | August 2021 – January 2022
  Java Developer

  • Developed new REST services for a banking project, improving data processing and security.
  • Investigated and resolved issues across multiple projects, ensuring seamless system operation.

• Datas Technology | July 2020 – June 2021
  Java Developer

  • Implemented new REST services for banking applications, improving efficiency and usability.
  • Wrote unit tests to ensure high code quality and reliability.
  • Fixed bugs and optimized existing applications for better performance.

• IT-Transit | September 2018 – July 2020
  Java Developer

  • Developed new features for utility billing calculations, increasing accuracy and usability.
  • Refactored a monolithic application into a microservices architecture, improving scalability.
  • Built SPA applications using React to enhance user interaction with services.

• Advanced Scientific Research Projects | June 2017 – August 2018
  Java Developer

  • Designed a report generation system supporting PDF and Excel formats using Apache PDFBox and Apache POI.
  • Optimized video stream processing from surveillance cameras, improving data accuracy and performance.
  • Implemented report visualization using Google Charts, enhancing analytics capabilities.

Areas of Expertise

• Java Backend development
• REST services
• Performance Optimization
• Data Engineering

Key Skills

• General: Java
• Frameworks: Spring Framework, Hibernate, JUnit, Mockito, Apache Spark
• Databases: MySQL, PostgreSQL, MongoDB, Oracle, Redis, CosmosDB, Teradata, DB2
• Cloud: Microsoft Azure, AWS
• Frontend: React
• Messaging: Apache Kafka
• VCS: Git
• Migration tools: Liquibase, Flyway
• Tools: Docker, Postman, ChatGPT, Keycloak
• Architecture styles: Microservices, Monolithic

Education

• 2013-2015 Master’s Degree NTUU “KPI”, Faculty of Physical Engineering

Languages

• English: B2
• Russian: native speaker
• Ukrainian: native speaker

Date of Birth

• 24/08/1989.