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[ LEAD QA & AUTOMATION ENGINEER — SDET · BELGRADE — SERBIA ]

Lazar Denčić

5+ years of architecting quality systems and driving reliability for products on top of agentic AI implementations.

02 · EMPLOYMENT HISTORY

Lead QA & Automation Engineer - Sealit

2021 — 2026

PROJECT OLIN.AI

  • Owned end-to-end QA lifecycle for a Legal AI product used by top-tier global law firms, leading delivery across an Agile team.
  • Built an agentic AI system that auto-generates tests and finds bugs - adopted team-wide.
  • Led red-teaming and LLM quality testing, validating factual grounding, answer quality, and citations to minimize output errors.
  • Architected the test automation framework from scratch - C#/.NET, Selenium, SpecFlow, Azure CI/CD.
  • Kept production failure-free ~2.5 years - even as workload doubled (engineering 4→8).
  • Mentored 2 QA Testers and partnered with engineering/product team on product design and UI/UX readiness.

PROJECT SEALIT.ID

  • Sole QA for Zero-Trust Cybersecurity SaaS, resolving over 1,000 defects.
  • Cross-platform testing (Web, Desktop, iOS, Android, Google/Microsoft Add-Ins), ensuring secure and consistent user experience and stability.
  • Built test automation in .NET project - for the web application.

IT Support Engineer - NCR

2019 — 2021

  • B2B Clients - Walmart & Boots UK - Grew: L1 → L2 → L3 Engineer → Incident Manager.

Earlier

2015 — 2019

  • Front-End Web Dev, Graphics & Video (Freelance / Happy TV)

03 · SKILLS & TOOLS

0 YEARS · QUALITY SYSTEMS
0 DEFECTS RESOLVED
0 YEARS · FAILURE-FREE PROD
4→4 ENGINEERING SCALE-UP
FOCUS · 2015 — 2026

04 · EDUCATION & LANGUAGES

EDUCATION

  • ISTQB Foundation & AI Testing in-progress
  • Bootcamp: Software Testing
  • ITAcademy - Java Developer

LANGUAGES

  • Serbian NATIVE
  • English C2
  • Dutch A1