Key technologies - Java 8, Java concurrency, Cassandra, Spring, JUnit, sql, caching, linux, javascript, html, git, Docker, microservices.OK.RU is a social network with 30 millions DAU.Backend and web engineer. Implement product features. Work in agile team responsible for user groups, user notes, e-commerce.I get new tasks without clear specification. I take part in the discussion of task, time estimation.Write unit and integration tests.Use metrics and A/B testing to evaluate results.Deal with many colleagues, do code review.Responsible for deploying couple of microservices to the production.Query detailed analytics from Hadoop with Scala SparkMy largest feature was extended "likes" - reactions, similar to Facebook. I was responsible for storage, caching and integration within the whole portal. The service handles 250К read RPS and 2K write RPS.

The company developed mobile app for car dealers. Service technicians use the app when car owner want to leave a car at the service. The app has checklist for service technician, prices and availability of spare parts.My responsibilities:- Develop API for iOS app, backend and integration with 1C ERP.- Interview car dealer employees for business requirements- Participate in salesTechnologies: Scala, Play framework, MySQL, SOAP, REST

I made an automation system for the internet advertising agency. It- helps to create and manage advertisements- allows run combinations of text and images to choose ones with the best CTR- reports CPA of engaged usersTechnologies: Scala, GWT, Bootstrap, MySQL.

Worked for the shop aggregator - Yandex.Market.I was in team that was responsible for the interface for shops.Shops managers can see billing information, their rating, response to customers claims.I was doing:- moving data to memcached to improve UI responsiveness- support of Cost Per Action billing- investigations of fraudulent clicks made by botsTechnologies: Java 6, SQL, Oracle DB, memcached

Developed CRM system for the concierge service.I was full stack developer.Developed a framework to construct web forms.Technologies: GWT single page app, Java 6 web app, Guice, Hibernate, PostgreSQL.