Hard Skills

• Programming & Frameworks: Java (Spring, Hibernate, Multithreading), PHP, Python, JavaScript, HTML, CSS

• Databases & Search: MySQL, NoSQL (Cassandra, HBase), Hive, ETL pipelines, Solr, Lucene

• Big Data & AI/ML: Apache Spark, Hadoop, Data pipelines & distributed systems, AI/ML integration

• Cloud & DevOps: AWS (EC2, EMR, S3, Athena, SQS, SNS), Docker, Terraform, Kubernetes, Jenkins, Maven, Git, SVN

• Architecture & System Design: Microservices, REST, GraphQL, Software Architecture & Consulting, Security & performance optimization, Scalable backend systems

Professional Experience

Software Consultant & Engineer |  2023 - Present

• Consult clients to analyze business needs and translate them into technical solutions.

• Define development roadmaps, architecture, and technology stack for projects.

• Design and implement backend systems, APIs, and scalable infrastructures.

• Develop AI/ML-driven features to enhance user experience and product capabilities.

• Create intuitive UI/UX prototypes and ensure smooth integration with backend services.

• Perform testing, performance optimization, and security hardening.

• Manage deployments with minimal downtime and provide technical documentation.

• Offer ongoing maintenance, updates, and long-term support for delivered solutions.

Technologies: Java, Spring, PHP, AWS, Big Data (Spark, Hive), MySQL

Team Lead | MyHeritage | Remote | 2021 – 2023

• Guided a high-performing development team, balancing my time between management (30%) and hands-on technical leadership (70%), which notably improved team productivity.

• Participated in the integration of AI/ML for a key photo enhancement feature, leading to a significant and measurable increase in user engagement.

• Championed initiatives to strengthen product security and modernize legacy codebases, effectively reducing system vulnerabilities while improving existing features and adding new ones.

• Served as the primary communication link between my team, other engineering groups, and senior leadership, ensuring our development process and quality standards were always aligned.

Technologies: PHP, Big Data, EMR, Spark, Hive, AWS, Java, MySQL

Senior Backend Developer | MyHeritage | Kyiv, Ukraine | 2017 – 2021

• Engineered and maintained a complex ETL pipeline for processing millions of historical records, which greatly improved data search accuracy and speed for users.

• Designed and developed new backend features and REST APIs for a large global user base, while also supporting and enhancing the existing product.

• Authored comprehensive system design and technical documentation that became the standard for cross-team projects.

• Regularly presented technical solutions and project outcomes to stakeholders and team members.

Technologies: Java, Spring, Hibernate, Big Data, ETL, AWS, Spark, Hive, MySQL

Senior Software Engineer | EPAM | Kyiv, Ukraine | 2016 – 2017

• Tasked with a major project for a US energy client: to build a centralized system to process and structure a massive volume of technical documents stored in various text and graphic formats.

• Architected the end-to-end solution, assembled the project team, and implemented the core data extraction engine.

• Built a powerful full-text search platform using Apache Solr, allowing the client to search decades of unstructured documents in seconds.

• Successfully presented the initial working version to the client, which secured project approval and further investment.

Technologies: Java, Spring, Hibernate, Big Data, Spark, Hive, SQL, Solr

Java Developer | CyberVision | Kyiv, Ukraine | 2014 – 2016

• Developed and maintained backend microservices for a complex service management system used by a major US telecommunications provider.

• Implemented a high-performance, full-text search feature using Lucene, which drastically reduced average data query times.

• Strengthened system security by integrating an LDAP-based authentication and authorization module.

Technologies: Java, Spring, GWT, Lucene, Cassandra, Microservices, MySQL

Java Developer | Priocom | Kyiv, Ukraine | 2013 – 2014

• Developed core REST APIs for a new service management system for Ukraine's largest telecommunications operator.

• Optimized complex Oracle database queries and fine-tuned system components, leading to a substantial improvement in overall system responsiveness and performance.

• Integrated Lucene to significantly improve search performance.

Technologies: Java, Lucene, Jersey, HBase, Oracle, Maven, Git

Head of Internet Programming | MTI | Kyiv, Ukraine | 2011 – 2013

• Promoted to lead the development department, where I managed project roadmaps, budgets, and a team of developers.

• Pioneered, architected, and oversaw the creation of Ukraine's first in-store self-service kiosk for real-time inventory checking, a unique solution at the time.

• This system, built with JavaFX, allowed customers to scan products and check availability across the entire retail network, significantly reducing queues and freeing up staff.

• I managed the project from concept to rollout, including hardware procurement, software development, and staff training.

• Developed a website for conducting surveys among company employees. The system allowed managers to create questionnaires, view results, and generate reports.

Technologies: Java, JavaFX, PHP, WordPress, Java Script, HTML, CSS, SQL

Software Developer | MTI | Kyiv, Ukraine | 2008 – 2011

• Developed and maintained dozens of internal and public-facing websites using PHP, WordPress, and MySQL, often extending functionality with custom plugins.

• Designed and built a custom software update utility from the ground up. The solution included a server component for packaging files and a Java-based desktop client that automatically checked for, downloaded, and installed updates on employee workstations.

Technologies: Java, PHP, WordPress, Java Script, HTML, CSS, SQL

QA Engineer | MTI | Kyiv, Ukraine | 2007 – 2008

• Performed manual and automated testing for high-traffic web portals, using JMeter for performance and load testing.

• Actively participated in technical design meetings, contributing to solution planning from a quality perspective.

• Authored technical documentation, managed bug tracking, and continued to deepen my knowledge of Java and Linux.

Technologies: PHP, WordPress, Java Script, HTML, CSS, SQL, JMeter

Education

Master’s Degree

National Aviation University | Kyiv, Ukraine | Sep 2001 – Feb 2007

Languages

Ukrainian – Native

English – Upper-Intermediate

Online courses

• Software Architecture & System Design Practical Case Studies

• The Complete Guide to Becoming a Software Architect

• Software Architecture & Design of Modern Large Scale Systems

• Microservices Architecture - The Complete Guide

• Java Multithreading, Concurrency & Performance Optimization

• Java Application Performance Tuning and Memory Management

• Master Microservices with Spring Boot and Spring Cloud

• Spring & Hibernate for Beginners (includes Spring Boot)

• Apache Spark for Java Developers

• Spark and Python for Big Data with PySpark

• The Complete Python Bootcamp From Zero to Hero in Python

• AWS Certified Machine Learning Specialty 2023 - Hands On!

• AWS Certified Developer - Associate 2020

• Terraform for the Absolute Beginners with Labs

• Docker & Kubernetes: The Practical Guide [2023 Edition]

• Leadership: Practical Leadership Skills

• ICAgile Certified Professional - Agile Team Facilitation