Oleh Kaliuzhnyi
Senior Software Engineer at Hillel IT School
Odesa, Odesa Oblast, Ukraine
Summary
👤
Senior🎓
Top SchoolOleh Kaliuzhnyi is a Senior Software Engineer based in Odesa with over a decade of Java expertise and a growing production Go background, currently contributing to Mythical Games. He has repeatedly led architecture transitions—most notably splitting monoliths into microservices at EPAM and driving CI improvements from Jenkins to CircleCI at Redwood—while serving as a bridge between business and engineering. As a hands-on mentor and trainer, he has taught Java to 100+ students at Hillel IT School and routinely prepares course materials and reviews assignments. His experience spans fintech, telecom, and game-related backends, with a pragmatic focus on API design, service-oriented architecture, and developer productivity. An engineer who started in embedded/industrial software for air compressors, he brings a systems-minded approach and long-term operational perspective to scalable backend design.
11 years of coding experience
17 years of employment as a software developer
Master of Science degree in engineering, Refrigerating machines and plants, Master of Science degree in engineering, Refrigerating machines and plants at Odessa State Academy of Refrigeration
Russian, Ukrainian, English
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (54)
jsp-servlet10
spring-rest10
postgresql-database10
spring-data-redis10
postgresql10
jms10
spring10
restful-api10
docker-compose10
spring-security10
webservice10
basic-authentication10
fabricio10
junit10
hibernate10
Programming languages (1)
Github contributions (5)
OKaluzny/spring-boot-docker-postgres
Dec 2019 - Mar 2021
Lightweight RESTful API with Spring Boot 3, Keycloak, PostgreSQL, JPA, Docker, OpenAPI, etc.
Contributions:71 commits, 6 PRs, 69 pushes in 1 year 3 months
dockerjpakeycloakopenapipostgresql
OKaluzny/jpa-eclipseLink-derbyDB
Jul 2017 - Nov 2019
Contributions:7 commits, 6 pushes, 1 branch in 2 years 4 months
jpaeclipselink
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