QA Engineer (Manual and Automation) | QA Lead

📍Located in Belgrade, Serbia; Open to remote positions.

QA Engineer & QA Lead with 14 years of experience across iGaming, Marketing, Healthcare and Telecom. I build QA teams, design scalable testing processes, and deliver stable FE/BE testing strategies. Strong in UI/API automation (Playwright, TS/JS), cross-team communication, and process engineering.

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Work Experience

QA Lead

TrueLabs (iGaming), Remote | February 2024 - November 2025

<aside> ⚡ Built a QA team from scratch (0 → 10 members) and after conducting a full QA audit, established all internal and cross-department testing processes, enabling the team to operate independently without my further involvement.

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• Designed and coordinated QA processes across 3 product teams and 1 outsource team.
• Built an automation framework for API and UI tests; conducted code reviews and internal training.
• Hired, onboarded, and mentored QA engineers, running 1:1s and growth plans.
• Oversaw daily QA operations: test planning, reviews, release quality control.

QA Engineer

Semrush (Marketing), Barcelona | September 2021 – May 2023

<aside> ⚡ Actively advocated for performance testing, designing and executing capacity and stability test cases with Gatling & Scala, which led to eliminating a critical system issue.

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• Designed test strategies and comprehensive test plans for complex marketing systems.
• Developed automated API regression tests (Groovy/Spock), increasing API regression coverage from 0% → 70%.
• Built CI/CD pipelines in GitLab based on Quality Gates principles.
• Maintained internal documentation and contributed to QA hiring and interview process.

Leading QA Engineer