Віталій

Vitalii Fedyk
Software Engineer
fedykvitalik2004​@gmail.com [відкрити контакти](див. вище в блоці «контактна інформація») Lviv github.com/fedykvitalik2004

[відкрити контакти](див. вище в блоці «контактна інформація»)

Summary
Java Backend Developer with nearly 2 years of commercial experience in Microservices-based environments.
Proficient in Java 17/​21 and Spring Boot, with practical experience applying Hexagonal Architecture to maintain clean
and decoupled domain logic.
Skilled in building event-driven systems using Apache Kafka and designing robust RESTful APIs.
Technologies:
Programming Languages
Java 17/​21, SQL
Frontend(basic):
HTMl, CSS, JS
Frameworks and Libraries
Spring Framework, Spring Boot, Spring MVC, Spring Data JPA, Spring Security, Hibernate, JDBC
API & Communication
OpenAPI (Swagger), AsyncAPI, REST
Databases
PostgreSQL, Liquibase/​Flyway
Testing
JUnit, Mockito, Spring Test, Karate DSL, Testcontainers, Postman
Cloud & DevOps
AWS (EC2, S3), Linux, Docker, GitHub Actions, Jenkins
Methodologies
Scrum, Behavior-Driven Development (BDD)
Al
GitHub Copilot, Claude, Prompt Engineering

Experience
Junior Java Developer Dec 2024 – Apr 2026
Softserve
A manufacturing and quality management system enabling users to perform
inspections, track defects, manage reoperations and monitor supply chain processes.

Contribution:
Designed and implemented RESTful APIs with Spring Security and OpenAPI
•

(Swagger), ensuring secure and scalable data access.
Implemented event-driven communication using Apache Kafka to process
•

asynchronous message streams across microservices.
Eliminated technical debt by refactoring legacy 'code smells' into clean, modular
•

components.
Developed backend services following Hexagonal and Clean Architecture
•

principles.
Designed PostgreSQL database schemas and optimized performance through
•

query refactoring and indexing, reducing API response times.

1/3
 Ensured high system reliability by building a comprehensive automated testing
•

suite (Unit, Integration and E2E).
Containerized services using Docker and contributed to CI/​CD pipeline
•

configurations via GitHub Actions.
Participated in Scrum ceremonies, code reviews, and system design improvements,
•

collaborating with stakeholders to refine business requirements.

Technologies:
Programming & Frameworks
Java 21, Spring Boot, Spring Data JPA, Spring Security, Hibernate
Databases
PostgreSQL, MariaDB
Messaging
Apache Kafka
API & Documentation
REST APIs, OpenAPI (Swagger)
Testing
JUnit, Mockito, Karate DSL
Frontend (basic)
HTML, CSS, Free Marker
DevOps & Tools
Docker, GitHub, Jira, GitHub Copilot, Claude

Trainee Java Developer Jun 2024 – Nov 2024
A GreenTech web platform for waste sorting and doorstep collection, featuring
automated scheduling, multi-category waste processing (recyclables, textiles, mixed
waste), and integrated online payments.

Contribution:
Developed RESTful APIs using Java and Spring Boot, implementing core backend
•

functionality and request/​response handling
Investigated and fixed bugs, contributing to improved system stability
•

Wrote unit and integration tests to ensure code quality
•

Participated in code reviews
•

Collaborated with team members, including daily communication and requirement
•

clarification

Technologies:
Programming & Frameworks
Java 17, Spring Boot, Spring Data JPA, Hibernate
Database
PostgreSQL
Testing
JUnit
Project & Collaboration Tools
GitHub Projects

Education
Information Systems and Technologies - Bachelor's Degree 2021 – 2025
Lviv Polytechnic National University Lviv, Ukraine

2/3
Interests
Traveling and exploring new cultures Photography and visual storytelling

3/3