Data leak prevention high-load system.Responsibilities:- Developing microservices in Java / Kotlin, designing the system's architecture.- Setting up integrations with other systems and AI-models written in Python.- Writing and optimising algorithms for searching sensitive information.- Designing and developing core logic for a desktop version of system (slim version of web-system).- Conducting code-reviews, demos for business, onboarding new employees.Achievements:- Developed a common Spring Boot Starter for all microservices to simplify development and minimize code duplication.- Developed a slim version of Spring Framework for a desktop application that decreased start-up time in 2 times (from 8 to 4 seconds) with Java Core only.- Improved and optimised algorithms for searching sensitive information using multithreading and concurrency.- Suggested and implemented a distributed tracing with Zipkin and Sleuth, distributed lock with Redis patterns.

Railway logistics route optimization system for the company's fleet of wagons.Responsibilities:- Developing a system from scratch: designing the application architecture, assisting BA in gathering system requirements.- Creating MVP: developing the core microservices of system.- Writing algorithms to optimise wagon routes and automate internal company processes.- Replacing the team-lead: onboarding, code-review, demos for business.Achievements:- Set up CI/CD processes using GitLab CI for automatic deployment of services to different environments (dev, stage, prod).- Participated in designing and developing of MVP.

System for collecting, aggregating and analysing financial data and statisticsResponsibilities:- Collecting and aggregating financial data from various internal and external sources.- Developing API for real-time report building functionality to provide statistic reports on the fly.- Designing and developing microservices in Java and Spring Boot.- Improving and maintaining existing code.- Writing SQL queries, tests and fixing bugs.Achievements:- Designed and developed a microservice to automate the process of data collection and aggregation to ensure up-to-date information.- Rewrote several microservices from a legacy stack (Java EE) to a modern stack (Spring Boot) using best practices for building modern APIs.