Наталія

Nataliia Koval Highly skilled Java developer with 5 years of experience. Possess strong
technical expertise, analytical thinking, and communication skills. A
Senior Java Developer collaborative team player with a proactive approach to learning new
technologies quickly and independently, committed to continuous growth
and improvement.
[відкрити контакти](див. вище в блоці «контактна інформація»)
[відкрити контакти](див. вище в блоці «контактна інформація»)
Professional Experience
Dnirpo, Ukraine
Java Developer, Routerra
May 2022 – present | Kyiv, Ukraine
Skills Project : Logistics delivery system
Design application architecture.
Design: SOLID, REST, UML, GoF, Feature development for managing daily truck deliveries, including
monolithic architecture / microservices shipment tracking, route optimization, and scheduling.
Optimizing system performance through multithreading, caching, and
Backend: Java Core, Multithreading, Spring:
efficient resource management.
Core, MVC, Boot, Security, Data,
Designing and securing API endpoints with Spring Boot, JWT, and Spring
JPA/Hibernate, OAuth2, Lombok, SQL,
Security.
Logback, Flyway, MapStruct, Apache POI,
Redis, RabbitMQ, Swagger, Thymeleaf Technologies: Spring Boot, Hibernate, Maven, Flyway, Criteria API, DBRider,
Databases: PostgreSQL, MySQL, H2 PostgreSQL, JUnit, TDD, Mockito, Testcontainers, OAuth2 Spring Security, Git,
Mapstruct, Apache POI.
Frontend: HTML, CSS, Bootstrap
Testing: TDD, JUnit, Mockito, Java Developer, HiTech Service LLC
Testcontainers, DBRider, VisualVM, MAT February 2021 – April 2022 | Kyiv, Ukraine
CI: GIT, Maven, Docker Project: Educational platform
Implementation JWT-based authentication with Spring Security. Optimizing
system performance with Hibernate tools, multithreading and parallel data
Education enrichment. Enhancing database query efficiency.
Integrating Redis for JWT token caching. Creating Thymeleaf templates for
Master's Degree in Enterprise feedback forms. Documenting APIs with Swagger.
Economics,
Alfred Nobel University Technologies: Spring Boot, Spring Security, Hibernate, Multithreading, Flyway,
PostgreSQL, Caching, Stream API, JUnit, Mockito, Testcontainers, Docker,
1999 – 2004 | Dnipro, Ukraine
MapStruct, Thymeleaf, Swagger, Redis.

Java Developer, HiTech Service LLC
Languages February 2020 – January 2021 | Kyiv, Ukraine
CRM Project
Ukrainian Russian Creating the database structure and optimizing queries with Hibernate to
improve execution time.
English (C1) German (A1)
Applying TDD with unit and integration testing. Increasing code coverage.
Code review, bug fixing, pair programming. Analyzing and eliminating
memory leaks.
Interests
Technologies: Spring Boot, Spring Web, PostgreSQL, Flyway, JUnit, Mockito,
Gym, pets, books, languages, drawing Testcontainers, Docker, MapStruct, MAT.