Teacher of MySQL, AWS, Jenkins, Jemeter and ISTQB skills at SDET course

Help students undestanding course program Сonducting webinars to consolidate the material

Achievements: - Backend Performance: - Issue with configuration service: - Situation: The configuration service gathered all necessary parameters with each request, traversing other services. - Action: Proposed to redesign the service architecture so that it would gather necessary parameters only upon the first request and store them in cache for subsequent requests. - Result: - Reduced resource consumption by approximately 20 times - Reduced 90th percentile response time from 4 seconds to 230ms - Decreased infrastructure costs by approximately $10,000 per year - Web Performance: - High loading times and lack of performance monitoring practice: - Situation: The average loading time of the admin interface was 13 seconds, which could reach several minutes with an increase in the number of records. - Action: Implemented performance tests based on the sitespeed.io framework. Then implemented semi-automatic one-click launch from AWS. Further added a dashboard displaying key metrics of all launches. Collaborated with the DevOps team to implement fully automated test runs. Conducted training for web developers to independently analyze results. - Result: Based on test results, a series of improvements were made, reducing page loading time to a stable 3-5 seconds.Responsibilities: - Building the performance testing process from scratch - Conducting regular tests of backend services to detect regressions - Preparing reports on conducted tests - Providing recommendations for optimizing and configuring environments to achieve maximum performance and/or minimum cost.

Build from scratch performance testing framework use Locust.io for different protocols: - HTTP - Websocket - Apache Kafka - Redis - PostgreSQL Build monitoring for performance tests with InfluxDB + Grafana. Add performance tests to CI/CD piplene in TeamCity.Reduce main page load speed from 3 sec to 1,2 sec. with optimize GraphQL request. Hire and mentoring 3 new members of performance team.Help with building python autotest framework.

Creation of a project for load testing of the user registration service through Jmeter. Build monitoring for performance tests with InfluxDB + Grafana.Add performance tests to CI/CD piplene in TeamCityCreation and development of an autotest project for the API part of the registration service. Stack SpecFlow + NUnit + C#. Writing cases for manual testing of API via Postman. Acted as a Scrum Master on my team

Engaged in API and Performance testing of the Adacta AdInsure system. Created a performance test project, loaded the bench and compiled a report on the current state. Maintained an API testing project written in SOAP UI. part of the time wrote and maintained cases for manual checks.