Kirill Girman Email & Phone Number

Project: SSP (implementation of Real-Time Bidding for advertising creatives auction)Tech stack: Java 17, Spring (Core, Boot, Data JPA, Cloud, Security), Hibernate, PostgreSQL, Redis, ClickHouse, Kafka (Streams), Docker, JUnit, Mockito, Testcontainers, Gradle, Jenkins, Nexus, Grafana, Swagger, OpenAPI- Integrated an ML model, increasing successful fraud filtering by 8%.- Optimized PostgreSQL queries by implementing Redis caching, achieving a 17% improvement.- Boosted RPS by 4% through asynchronous writes to ClickHouse via Kafka.- Enhanced test coverage from 72% to 88% by implementing numerous test cases.

Project: gaming projects with an annual revenue of $140,000,000 and 10,000,000 MAUTech stack: Java 8/17, Spring (Core, Boot, Security), Hibernate, jOOQ, Flyway, Liquibase, PostgreSQL, Redis, MongoDB, RabbitMQ, Docker, Kubernetes, JUnit, Mockito, Gradle, Maven, Jenkins, TeamCity, Grafana, Splunk- Developed over 10 new gameplay mechanics, increasing DAU by 16%.- Accelerated server launch, reducing cold start time by 21%.- Refactored 2 monolith modules (database and admin panel) into microservices.- Migrated microservices from Java 8 to 17, adopting Spring Boot 3.1 and Core 6.0.

Project: e-commerce project for selling educational materials and goodsTech stack: Java 17, Spring (Core, Data JPA, Security, MVC), jOOQ, PostgreSQL, Docker, JUnit, Mockito, Gradle, Swagger, OpenAPI- Designed monolith architecture and developed the project from scratch to production.- Developed an internal CRM, ERP, and financial reporting dashboard.- Integrated the YooKassa payment provider for cart purchases.

Master Of Technology - Mtech, Business Informatics

Bachelor Of Technology - Btech, System Analysis And Management