Олена

Olena Mukhina
Java Developer

CONTACT PROFILE
I am a Java developer with over 3 years of experience in the web
[відкрити контакти](див. вище в блоці «контактна інформація») industry. I have worked on creating new products and improving existing
(Telegram, Viber) ones. My experience includes developing backend components for
[відкрити контакти](див. вище в блоці «контактна інформація») enterprise applications and processing payment data in the banking
sector. I have developed and integrated microservices into existing
Zaporizhzhia, Ukraine systems. I have worked in teams using Agile methodologies to ensure
efficient project delivery.
SKILLS

Java WORK EXPERIENCE
Spring:
Boot Java Developer February 2024 - February 2025
MVC
PUMB Bank
Data
AOP About the project: The project was in the financial sector. I worked on
Security developing functionality for processing client applications for acquiring
Cloud Config services and handling financial transactions. I developed functionality to
Microservices provide access to acquiring data in the client’s personal account,
JPA (Hibernate) including information on merchant outlets, transactions details, payment
JDBC history, and more.
Microsoft SQL Server, PostgreSQL
Redis Responsibilities:
Liquibase Developed and maintained microservices using Java, Spring Boot, and
JUnit, Mockito, AssertJ databases.
Docker Integrated microservices via REST API with other components and
Jenkins external systems, generating client libraries using OpenAPI to simplify
Rundeck integrations.
ELK Stack (Elasticsearch, Logstash, Optimized code to improve the speed of operations execution,
Kibana) including the use of asynchronous data processing.
Maven Wrote unit tests.
Git Created and maintained documentation.
Deployed services using Rundeck.
LANGUAGES Provided support, resolved issues, and fixed bugs based on user
feedback.
English – B1 (Intermediate), confident Conducted code reviews and provided recommendations to improve
in reading English materials, improving the quality of the software product.
speaking skills
 Java Developer December 2021 - January 2024
EDUCATION
IT Trek
Zaporizhzhia National University About the project: The project was related to the area of statistics,
Master's Degree in Finance financial data analytics, and reporting management. My task was to
Specialization in Corporate Finance create an efficient and reliable system for processing statistical and
financial information. I was responsible for implementing functionality for
convenient report analysis and automation of its processing, significantly
simplifying work processes.

Responsibilities:
Developed and integrated microservices using REST API to ensure
efficient communication between them.
Created REST controllers and endpoints to enable interaction
between system components and documented them in Swagger for
easier usage.
Wrote SQL/HQL/JPQL queries for database interaction.
Wrote unit tests to identify bugs in the early stages of development.
Configured authentication and authorization using Spring Security.
Configured Liquibase and created migration files.
Maintained and refactored existing code to ensure efficiency and
adherence to coding standards.