Automated tests (Javascript/Typescript+Jest+Puppeteer, Javascript/Typescript+Jest+Supertest, Apache JMeter, OWASP ZAP). Configuring local test environment launch & test execution (application, database, auto-tests, services). Setting automated tests in CI/CD Jenkins. Manual tests (GUI, API, Databases, Desktop, Web, Mobile). Establishing QA work process and it's improvement. Improving collaboration Developer