11/09/2026 updated
100 % available
QA Engineer / SDET — Playwright, API testing, manual & exploratory testing · Remote (B2B)
Belgrade, Serbia
Worldwide
Application Programming Interfaces (APIs)Test AutomationTest ManagementUser Interface TestingWebRTCTestingPlaywright
QA Engineer / SDET with 10+ years in software testing.
Test automation: Playwright (TypeScript, C#), Python, Sikuli, Page Object Model, UI and API test automation, desktop test automation.
Manual testing: test case design, test plans, functional, regression, integration, system, exploratory testing, UAT, release verification, defect management.
API testing: REST, Postman, schema validation (Zod, OpenAPI), SQL, data validation.
CI/CD: GitLab CI, Azure DevOps / TFS, Docker, Kubernetes, ArgoCD.
Performance testing: k6, Locust (load tests up to 6,000 concurrent sessions).
Accessibility testing: WCAG audits, automated a11y scans.
AI: testing LLM assistants and ML models; AI-assisted QA with Claude Code agents.
Tools: Jira, YouTrack, Allure TestOps, Test IT, Grafana, Sentry, Graylog.
Methods: Agile, Scrum, Kanban, SDLC, STLC, shift-left testing.
Domains: e-learning / online proctoring (WebRTC video), enterprise software, desktop and mobile apps.
Languages: English C1, Serbian (professional working)
Experience
Professional experience10+ years
Freelancer since2014
Languages
GermanBasic knowledgeEnglishFluentRussianNative speakerUkrainianNative speakerSerbianGood