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Matvey Kasyanovich

@matveykasyanovich

I build maintainable Java backend systems with Spring Boot, Kafka, PostgreSQL, Redis, Hibernate Liquibase and secure REST APIs.

Belarus

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What I'm looking for

I'm looking for a Java Developer junior-to-middle role where I can build scalable, secure backend systems, work on real problems, and grow through maintainable, testable architecture.

At SENLA, I build an event-management and registration system in Java, delivering administrator event creation, user registration and cancellation, and event updates with attendee notifications.

I developed a Kafka-connected notification service and a separate microservice for storing event-change records, helping clients receive relevant event updates. I also implemented JWT-based authorization and role-based access control to secure system operations.

I improve service performance through SQL query optimization, database indexing that doubled response speed, Redis Cache-aside caching, filtered paginated event search that reduced client load by 50%, rate limiting, and distributed locking.

I'm a Software Engineering student who values clean, structured, maintainable, and testable code. I work with Spring Boot, PostgreSQL, Kafka, Hibernate, Redis, Liquibase, and integration testing to build backend systems that solve real problems.

Experience

Work history, roles, and key accomplishments

Current

Java-developer

Current

SENLA

Aug 2026 - Present (0 months)

Event Management & Registration Platform — a microservices-based system (Java, Spring Boot, PostgreSQL, Kafka) enabling event creation, user registration, and JWT-secured role-based access. Implemented Kafka notifications, Redis caching, distributed locking, and DB optimization (2x faster queries), plus filtered search that cut client load by 50%. Includes integration tests, Docker-compose, CI/CD.