Alexander Gavrilenko

Accomplishments: • developed the architecture, set up CI/CD, and provided technical supervision for the customer project • provided architectural consulting for the new no-code integration platform • created the "Profession: Java developer" course for the online school • personal mentoring and training of developers (230+ sessions conducted)

The system for federated access to data in HDFS and Ozone with on-the-fly encryption of individual fields of Parquet files (availability 99.99%, throughput - 4 PB/day) Accomplishments: • designed, developed, and released the system into production -> reducing the cost of data storage by 4 times • optimized the system for 20k RPS, throughput of 200 GB/s and heap size up to 350 GB • developed CI/CD processes -> 3w LT, zero downtime upgrade, 100% auto-testing • onboarded and managed a team of 14 engineers

PaaS E-commerce platform (160k customers, ~1500 cloud service providers) Accomplishments: • separated the critical functional “User and Account Management” into a microservice • organized and managed the architectural committee of 10 tech leaders • managed a team of 7 engineers

Promoted from Senior Java Developer to Chief Solution Architect in less than 3 years. Retail and corporate credit risk assessment system (availability 99.99%) Accomplishments: • developed from scratch and released the system into production -> credit risk assessment time reduced by 1000 times (from weeks to minutes) • optimized read/write queries to the 20 TB Oracle database • migrated the actively used system from monolith to microservices • onboarded and managed a team of 25 engineers across four cities

Developed 3 complex systems automating individual and legal risk management and loan issuance on WebSphere/Oracle stack.

Developed the custom XMPP implementation and 4 backends for cross-platform mobile applications (iOS, Android, Java ME).

Ensured the performance of about 400 servers and services running on FreeBSD and Linux.