Данило

DANYLO DIACHENKO

@LinkedIn
PROFILE
@Telegram
Focused on building clean and reliable solutions as part of the
@GitHub team. Always ready to learn new technologies deeply and apply

[открыть контакты](см. выше в блоке «контактная информация») them to real business needs. Calisthenics and active sports
enthusiast, passionate about staying physically active.
Kyiv, Ukraine

SKILLS RELEVANT WORK
Java 8 - 17; EXPERIENCE
OOP, SOLID, Design Patterns, REST;
NDA july-2024 - august-2025
Spring (Boot, MVC, Data, Cloud); Logistic company
JUnit/Mockito; Decomposed a monolithic application into microservices by
Hibernate, PostgreSQL; business logic, enabling easier management and seamless horizontal
Docker, Maven; scaling in the cloud.
Git, Jira; Optimized database queries using JPA Specifications and
Familiar with: introduced custom indexes, cutting query response time by up to
Message brokers, AWS; 23%.
Mongo, Redis, GitLab CI/CD, Flyway Added Redis caching (LRU strategy) to critical services, reducing
LANGUAGE: load on the database by 20%.
Ukrainian - Native Strengthened product quality with comprehensive unit and
English - Upper-Intermediate integration testing; used Testcontainers to start up real
PostgreSQL/Kafka/Redis instances for test environments,
EDUCATION increasing test reliability.

BACHELOR OF INFORMATION TECH STACK:
SYSTEMS AND TECHNOLOGIES Java 17, Spring ( Boot, Data, Security, Cloud ), Maven, PostgresSQL,
National Technical University of Keycloak, Apache Kafka, Apache POI, Prometheus, Grafana,
Ukraine JUnit/Mockito, Testcontainers, Gitlab, AWS.
“Igor Sikorsky Kyiv Polytechnic
Institute”
2021 - 2025
JUNIOR SPECIALIST
ECONOMICS OF ENTERPRISE
Kherson polytechnic college of Odessa
national polytechnic university