Open to opportunities

Сергей Коровин

@0003151

Message

Java Developer specializing in high-load microservices and performance optimization.

Russian Federation

Message

What I'm looking for

I’m looking for a Java role building high-load microservices where I can optimize performance, strengthen reliability with monitoring and integration tests, and help teams through code reviews and mentoring—ideally with CI/CD and containerized deployments.

I’m a backend/full-stack Java developer with 5+ years of enterprise and fintech experience across banking, automotive services, and EdTech. I specialize in high-load applications, microservice architecture, and performance optimization—improving critical modules by 15-20% and reaching over 85% test coverage.

In my recent role, I’ve built and supported high-load Java applications for internal banking needs and tax reporting automation, delivered REST API + Jmix UI functionality, and integrated Artemis MQ for asynchronous flows. I also focus on stability and quality through monitoring (ELK, Grafana/Prometheus), strong JUnit unit/integration testing, CI/CD with GitLab, and regular code reviews and mentoring.

Experience

Work history, roles, and key accomplishments

Current

Java Developer

Current

Innotech Group of Companies

Sep 2023 - Present (2 years 10 months)

Develop and support high-load Java applications for internal banking needs and tax reporting automation. Improved business-critical module performance by 15–20%, implemented monitoring, and increased test coverage to over 85%.

Spring Boot Spring Security Hibernate MyBatis PostgreSQL Docker Kubernetes ELK Stack Gradle Jmix Framework CI CD Gitlab Junit Grafana Prometheus Monitoring Microservices

Java Developer

CyberGen

Jul 2021 - Aug 2023 (2 years 1 month)

Developed and maintained Java web applications including an auto service center platform and a university LMS platform. Delivered production launches, improved performance by optimizing PostgreSQL queries, reduced critical incidents, and ensured high test coverage.