Aleksandr Shevliakov Email & Phone Number

Belgrade, Serbia

Voronezh, Russia

VK Calls: Online Video Conferencing Application- Identified and addressed critical performance bottlenecks in the video processing pipeline. Achieved significant improvements by fine-tuning the FFmpeg configuration. Additionally, replaced the existing noise suppression model with a more efficient, lightweight alternative — an open-source noise suppression library based on a recurrent neural network.- Developed several features across our entire stack. This involved working across… Show more VK Calls: Online Video Conferencing Application- Identified and addressed critical performance bottlenecks in the video processing pipeline. Achieved significant improvements by fine-tuning the FFmpeg configuration. Additionally, replaced the existing noise suppression model with a more efficient, lightweight alternative — an open-source noise suppression library based on a recurrent neural network.- Developed several features across our entire stack. This involved working across various technologies, including Java for backend development, C++ and Qt for desktop applications, and JavaScript for our web SDK.- Fixed multiple hard-to-find bugs in our Webrtc stack.Tech stack: Java 11, Spring, Cassandra, JavaScript, C++. Show less

Voronezh, Russia

- Built from scratch several services that let users open a brokerage account and buy stock with several SMS. The solution saved several hours of manager's work per customer, as well as removed from customers the need of visiting the bank's office.- Took an existing service (brokerage account orchestrator) and reduced the number of rejected for technical reasons applications from 10% to less than 1%. Fully covered service with unit and integration tests. Added integration with ESIA that… Show more - Built from scratch several services that let users open a brokerage account and buy stock with several SMS. The solution saved several hours of manager's work per customer, as well as removed from customers the need of visiting the bank's office.- Took an existing service (brokerage account orchestrator) and reduced the number of rejected for technical reasons applications from 10% to less than 1%. Fully covered service with unit and integration tests. Added integration with ESIA that allowed non-customers of the bank open account and trade.- Mentoring, onboarding new developers, code review, and technical interviews.Tech stack: Java 11-17, Spring Boot, Spring, Kotlin, Webflux, PostgreSQL, MongoDB, Kafka, GitLab CI/CD, Jenkins, Kubernetes, Marathon (Mesos). Show less

Voronezh, Russia

Mirapolis is an applicant tracking system that can do almost everything you can think of.- Designed and developed user and chat microservices for the webinar platform.- Configured our CI/CD environment with custom Jenkinsfiles and Dockerfiles.- Found and optimized many bottlenecks in the performance of our monolith.- Integrated with external systems using different protocols (REST, SOAP, database backup, etc.) and transferred up to 1 million users at a time to our… Show more Mirapolis is an applicant tracking system that can do almost everything you can think of.- Designed and developed user and chat microservices for the webinar platform.- Configured our CI/CD environment with custom Jenkinsfiles and Dockerfiles.- Found and optimized many bottlenecks in the performance of our monolith.- Integrated with external systems using different protocols (REST, SOAP, database backup, etc.) and transferred up to 1 million users at a time to our system.- Mentoring, onboarding new developers, code review.Tech stack: Java, Spring Boot, Spring, PostgreSQL, MongoDB, Spring WebSocket, RabbitMQ with Stomp plugin, Cucumber, Tomcat. Show less