Nikita Marunko
Full-stack Developer at MetLife Japan
Kawasaki, Japan
Summary
👤
Senior🎓
Top SchoolNikita Marunko is a pragmatic full-stack developer with over a decade of experience delivering performance-driven Java and JavaScript systems across telecom, travel, finance and insurance domains. Based in Kawasaki, Japan, he combines hands-on coding with team leadership—mentoring engineers, interviewing candidates, and leading squads to improve delivery and reduce manual work by up to 95%. He has a strong track record of diagnosing and resolving performance bottlenecks (including a 90% query response improvement), modernizing frontends and backends, and implementing cloud and DevOps tooling. Comfortable in international, cross-cultural teams, Nikita has driven Kafka upgrades, adopted OAuth flows, and migrated React services to server-rendered Thymeleaf to cut troubleshooting costs. A math-and-CS master's graduate, he is equally at home optimizing SQL batch jobs or automating stress testing—often finding practical, non-obvious ways to cut operational overhead.
9 years of coding experience
11 years of employment as a software developer
Master's degree, Mathematics and Computer Science, Master's degree, Mathematics and Computer Science at Tolyatti State University
Russian, Spanish, Chinese, English, Japanese
Github Skills (96)
spring-kafka10
spring-cloud-stream10
resttemplate10
asyncapi10
documentation-generator10
springfox10
spring-jms10
spring-messaging9
swagger9
maven-plugin9
gradle-plugin9
pojo9
java9
kafka9
spring-boot9
Programming languages (4)
Github contributions (5)
aerfus/springwolf-core
Dec 2023 - Apr 2024
Automated documentation for event-driven applications built with Spring Boot
Contributions:13 pushes, 3 branches in 3 months
aerfus/java-spring-cloud
Jan 2020 - Feb 2020
Distributed tracing for Spring Boot, Cloud and other Spring projects
Contributions:12 pushes, 4 branches in 21 days
spring-boottracingspringmicroserviceskafka
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