Олександр

Alexander Liubchenko
JAVA DEVELOPER

My Contact SUMMARY
[open contact info](look above in the "contact info" section) Middle Java Developer with over 2 years of commercial
[open contact info](look above in the "contact info" section) (Telegram) experience in building and maintaining distributed transactional
systems. Strong expertise in Spring Boot, Hibernate/JPA,
GitHub
PostgreSQL and high-volume data processing, including EDI
LinkedIn
integrations, order processing and data mapping. Proven ability
Ukraine, Kyiv to deliver high-quality code, optimize SQL queries, conduct code
Ready to relocate reviews and apply SOLID principles and design patterns.
Ready to work remotely Experienced in Scrum methodology within cross-functional
SKILLS teams. Upper-Intermediate English.
Core Technologies EXPERIENCE
Java 8+, OOP, SOLID, Design Java Developer,
Patterns SPS Commerce, Mar 2024 -2026
Spring Boot, Spring MVC, Spring Developed and maintained EDI integration services for
Security, Spring Data processing high-volume orders between retailers, suppliers
Hibernate/JPA, JDBC and 3PL partners
PostgreSQL, MySQL (SQL Implemented complex data mapping and transformation
optimization) logic (X12 ↔ XML/JSON/internal ERP formats) ensuring data
Additional integrity in transactional flows
EDI Integrations, Order Processing, Designed and optimized business logic for processing
Data Mapping transactional documents (purchase orders, invoices, ASN,
Transactional & Distributed Systems inventory updates) using Spring Boot and Hibernate
Worked with relational databases (PostgreSQL and MySQL)
Scrum Methodology, Code Review,
through Hibernate/JPA, optimizing SQL queries for
Jira
performance under high load
Git, Maven, JUnit
Participated in the development of microservices and
Telegram API, Stripe API
integration layers within a Scrum team (Jira, daily stand-ups,
Other code reviews)
HTML, CSS Followed best coding practices, SOLID principles, design
Sumo Logic, Slack patterns and conducted code reviews to ensure code quality
English: Upper-Intermediate and maintainability
Education
Taras Shevchenko Kyiv National Here are also some of my projects:
University of Ukraine Accommodation Booking Service - Java-based Spring Boot
Bachelor Degree in Law project with Layered Architecture. Uses Telegram API, Stripe API
and PostgreSQL RDB
2020 - 2024 GitHub Code
ADDITIONAL EDUCATION Book Store API - Java-based Book Store API developed using the
Spring Framework. It employs a layered architecture and utilizes
Java course at Mate academy
the MySQL Database Management System.
(OOP, Java 8+, Spring, Hibernate)
GitHub Code
LinkedIn Learning