Valentin Bashkirov

Backend engineering on a 3GPP mission-critical communications platform (MCPTT push-to-talk, MCVideo, MCData) in Kotlin and Java 17 on Spring Boot. • Designed, built and documented a two-tier distributed architecture for regrouped group calls, cutting peak media load per server by more than an order of magnitude. • Rebuilt the Diameter Rx send path onto atomics and per-connection send queues drained on the selector thread, cutting p50 latency roughly 6x under sustained concurrent load. • Took on the Spring

Backend engineering on the same mission-critical communications platform, in Java and Kotlin. • Built out the MCPTT call and floor control stack against 3GPP TS 24.379 and 24.380 from an empty client implementation: SIP request factories, custom header parsers, call state machines, participating and controlling function split. • Delivered the MCData messaging domain to TS 24.282: short data service, file distribution over SIP, HTTP and MSRP, chunked transfer with cancellation, end-to-end encrypted messagin

Projects: 1. Multithreaded server application for data collection. Technologies: Java 1.8, Spring-boot 1.5.3, Postgres SQL, Jsoup 2. Recognition of product descriptions Normalization and recognition of the attributes of the loaded goods with an arbitrary description, comparison with the existing catalog, full-text search. Technologies: Java 1.8, Spring-boot 2.0.0, Hibernate, Postgre SQL, Apache Lucene, Python, nltk, pymorphy2, xlrd 3. UI for testing mashing Tool for testing the functionality and comparing d