As an outstaff backend C# developer I've participated in implementation of trading tools and services for automated trading on crypto-currency exchanges.The main solution is GrowityApp - is a high-load system, that make market-making trading. The platform is a classic .Net microservice architecture with RabbitMQ, scalable NoSQL database - Cassandra, and front-end on VueJS.I was participated in complex trading algorithms implementation. Improved code to support crypro exchange's feature, such as realtime subscription (WebSocket), respect rate limits,fixed bugs and perform unit test coverage.

High-load micro-services to process, aggregate and analyse real-time sport event’s data. Implemented service for collecting analytics data (using asp.Net + Hangfire + Kafka)Implemented service simplify process of A/B testing for new features developed by team (asp.net + Kafka+ PostgreSQL)Unit test coverageImplemented tool + SDK to simplify automation testing for mocking 3rd party appsBug fixesCreating tech design for features requestedCommunicate with PO and and teams to clarify integration points, functional and non functional requirementsPerformance testing of critical featuresManage 2 QA teams with 7 people in total. Working in high pace with focus on automation testing.Setup automation testing process from the scratch. Build team of QA professionals. Permanently provide feedback through the code review and 1 to 1 meetings.

Worked on features implementation for Notification Service, micro microservice for bidirectional communication with end users through the SMS gateway (Twilio)Worked on refactoring of legacy codeBug fixesUnit test coverage2017-2018-Managing QA engineers in two teams-Simultaneous work on 3 projects-Setup of testing processes, integration automation testing into project life cycle-Working closer with developers, POs to identify most popular flow and impact analysis-Estimation of efforts required for automation-Setup CI\CD processes on after deploy trigger and on nightly basis (TFS)-Identifying testing strategy, writing test scenarios (BDD, Gherkin)-Mentoring QA Engineers, regular code review-Implemented automation framework from scratch: - WebUi Framework with Angular support (Selenium + Protractor) -RestApi Client framework for back-end validation -Enhancing reporting system based on NUnit testing resultsSplitting common code into reusable assemblies which can be reused by any QA team in a company.Writing automation tests for UI and back end part

Development of QA proccesses for companyLeading QA team on several projectsDevelopment and adoptation of automation frameworkIntroducing backend tests for microservices environmentIntroducing Web UI tests for Angular -based frontendIntegration with CI/CD Participation in estimation of QA effortMentoring QAInterviewing candidatesDevelopment skill matrix for candidates and employersDevelopment of testing strategy for manual and automation testing for several teamsFocus on customer needsDefine automation scope according to project needs

-Managing test automation in multi project environment (5 products)-Developing tests for Web based application (Selenium)-Writing testing scenarios in BDD (C# + SpecFlow + Nunit)-Regular code and testing scenarios review-Participation in all Agile processes (Planing, Refinement,Standup)-Estimation of AQA effort

Creating design and Development of complex test automation framework using C#/Python from “scratch” for CQG Integrated Client and its brandsWriting tests for automation framework. Regular code review and refactoring.Maintenance of continuous integration system for autotest needs: JenkinsDeveloping and running autotest scripts, evaluating resultsWorking with developers identifying critical cases for automation and improving autotest coverage

- Functional testing of Content Management System(Web)- Functional testing of desktop application- working XML, XSD, XSLT, JScript,VBScript- Writing test scripts

Functional testing of desktop and web applications Installation of applications to Solaris, HPUX,AIX platforms;Installation of Oracle to Solaris, HPUX,AIX platforms;Test specification updatingWriting tool for test data preparation

-Functional testing-writing testlists-submitting bugs, working closer with Devs to clarify problem and testing approachesLast 6 months taking a position of QA lead on project with 3 persons team