Vitalii

VITALII BRETSKO
J A V A D E V E L O P E R

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SUMMARY
[открыть контакты](см. выше в блоке «контактная информация») As an experienced Java developer with four years of experience, I have a
strong background in Java 8-21, Spring Boot, Spring Cloud, and microservices
Lviv, Ukraine
development. I've successfully managed complex and large legacy projects,
implementing strategic solutions to optimize code efficiency. Additionally, I
excel at building projects from scratch, leading development with a strong
focus on scalability. Beyond technical proficiency, I enjoy sharing knowledge
and have actively mentored junior developers. I am now looking for a new
challenge and am excited to share my passion for innovation and
commitment to excellence with a progressive company.

SKILLS EXPERIENCE
Java (8-21)
MIDDLE - MIDDLE+ JAVA DEVELOPER
JDBC, JPA, Hibernate
TrackEnsure
Spring Core, Spring Security, Spring
Jan 2022 - Present
Web, Spring Data, Spring Boot,
Spring Cloud Project Description:

PostgreSQL, MySQL These microservices were developed for IBM.

Elasticsearch, ELK
Microservice idea: extracting social media data.
Apache POI
This microservice is designed as a social media extractor that works with a
Docker
dataset provided in xlsx format. It systematically scans the specified domains
Kubernetes
to collect links corresponding to various social media platforms such as
Microservices YouTube, Instagram, etc. The service is designed to parse these links and
SLF4J, L4J compile them into a structured CSV file. This file is then seamlessly
JSOUP transferred to the social media processing service for further operations.

Maven, Gradle
Microservice idea: visualization of data from different sources
JUnit
This microservice is a visualization tool that displays the interaction between
AWS
three key actors in the system (which I cannot disclose). It has its own
GitLab, GitHub
database, which is filled by other microservices, and is responsible for
Jenkins validating this data and visualizing it.
GSON, Jackson
Lombok Microservice idea: secure file storage with file metadata
LDAP The microservice operates under a strict Non-Disclosure Agreement. Its main

Tomcat functionality is to store security metadata and files with an additional layer of
protection using watermarking technology.
 Responsibilities:
EDUCATION Development and support of a social media service from scratch
Collecting data from other services
BACHELOR OF COMPUTER
Visualization of collected data
SCIENCE
Setting up security rules
Lviv Polytechnic National University,
Optimize file storage
Lviv
Parallelization of social media search
2020 - 2024
Technologies:
Spring Cloud, Spring, Java 8 - 21, Server-Side Discovery, AWS + custom IBM networking,
Spring Security, Elaticsearch ,Kibana, LogStash, Apache POI, OpenCSV, MapStruct,
ModelMapper, Jakson, Jenkins, CI/CD, Spring WEB,Docker with compose, JSOUP,
Completable Future Framework, Multithreading, GC, React, JavaScript, HTML, CSS

LANGUAGES
TRAINEE - JUNIOR JAVA DEVELOPER

Ukrainian - Native Vackoms

English - B2 Jun 2020 - Jan 2022

Project Description:
Modeling of the railway ecosystem, which interacts with sensors in the train,
compiles statistics from the information received, visualizes it and sends an
hourly report to the main center.
SOFT SKILLS Responsibilities:
Development of a reporting service
Attention to Detail Data collection for visualization
Mathematical operations part
Problem-Solving
Mockito testing
Communication
Technologies:
Teamwork Java 17+ ,Spring Boot, Actuator,Spring Cloud, Security, Jpa,Hibernate, Mockito, AWS
(EC2, S3 , ECR, ECS, EKS), Eureka, Client-side Discovery, Resilent4j, Lombok, Spring mail,
Adaptability Swagger, PostgreSQL

Time Management
Creativity INTERNSHIP
Critical Thinking SoftServe
Jan 2020 - Jun 2020
Leadership (as applicable)
Project Description:
The project aims to promote the Ukrainian language for study clubs in
Russian-speaking regions of Ukraine.

Responsibilities:
Development of clubs functionality
Creating filters for clubs, regions, users and the admin page
JUnit testing with Mockito
Development of functionality for managing challenges and events
Technologies:
Java 8-11, Spring Core, Spring WEB, Spring Data JPA, Spring Security, Junit5, Azure,
PostgreSQL, JWT , React, JavaScript, Mockito, Docker with compose , Hibernate, Lombok,
Apache POI, Swagger, RESTful service