Nikola Nikolić

Software QA Engineer

Belgrade, Serbia

About

Experienced Software Quality Assurance Engineer with a demonstrated history of working in the information technology and services industry. Skilled in Analytical Skills, Communication, English, Research, and IT Operations. Strong engineering professional, ISTQB certified, Mendix certified, graduated from IT Bootcamp.

Experience

  • QA Tester at Tubeiq
    Jul 2025 - Present · 1 yr 1 mo

  • Quality Assurance Engineer at Tubeiq
    Jul 2025 - Present · 1 yr 1 mo

    ● Built Cypress and Playwright frameworks for 3 financial systems: 300+ tests, 19,000+ LOC ● Designed modular Page Object architecture with Facade pattern, decomposing 1200+ LOC monoliths into 29 modules with zero breakage ● Automated E2E workflows across 18 user roles: credit requests, factoring, guarantees, insurance, strategic documents ● Built test infrastructure: SMTP email verification, JWT token validation, .docx content extraction, API intercept patterns ● Integrated test suites into Jenkins CI/CD with parallel execution, reducing test cycle time by ~30% ● Developed Playwright security test suite: auth, RBAC, health checks, SQL injection prevention (157 tests) ● Built AI-assisted QA tooling using Claude Code CLI for specification analysis, use case extraction, test planning, and test case generation, reducing manual planning effort

  • Consulteer (4 yrs)
    • Software Quality Assurance Developer
      Nov 2021 - Jul 2025 · 3 yrs 9 mos

    • Software Tester
      Aug 2021 - Nov 2021 · 4 mos