Leading a team of 8 people to develop a custom Extract-Transform-Load system to centralize and unify continuous as well as one time data from over 1000 different databases into one. Working closely with the business to understand the data flow and architecting the system to support it. With the new system, my team improved data transfer duration from 1week to 1h.Designed and implemented services to handle incoming traffic, store into internal databases as well as dispatch to external systems. Incoming data processing was improved over 100 times, and data storing speed for about 20 times.Technologies: Java, Kotlin, Apache Kafka, MongoDB, Neo4j, ElasticSearch, Spring

Worked on a warehouse management system for an online shop. Developed automated integration with suppliers and the shipping companies which released 90% of the manual labor. Designed and implemented an automated solution for order collection that increased the performance of warehouse workers twice.Technologies: Java, AWS, Spring, MariaDB

Worked on a cloud load testing tool. Implemented application to manage, start and collect results of tests. Designed and implemented a report generator service.Technologies: Java, AWS, Spring, MariaDB