I help software teams build test automation they can trust: fast, stable suites that run in CI and catch problems before customers do.
10+ years in quality engineering as a hands-on SDET, Lead QA and Head of QA, most recently building shared test tooling and CI/CD pipelines for engineering teams at a large SaaS company.
Available for consulting engagements and senior/staff roles. Based in Novi Sad, Serbia (CET), working remotely with teams in Europe and the US.
- 🐢 Slow or flaky E2E suites: stabilising tests and getting CI feedback back under control
- 🏗️ Test framework design: Playwright + TypeScript setups covering UI and API layers
- 🔁 CI/CD test pipelines: parallelisation, test data, reporting and quality gates
- 🔀 Migrations: moving from Cypress or Selenium to Playwright
- 🧭 Test strategy and QA leadership: for teams where nobody clearly owns quality
| Project | What it shows |
|---|---|
| ⚡ lighty | A typed HTTP testing library for Node.js, published on npm, with unit and integration tests, CI checks, automated publishing and a docs site |
| lighty-examples | Practical API test examples using lighty against httpbin: requests, assertions, redirects, auth, error handling |
| cypress-vs-playwright | The same test scenarios written in Cypress and Playwright, both running in GitHub Actions; companion code for my talk Clash of the Titans: Cypress vs Playwright |
Testing: Playwright · Cypress · Selenium · k6 · Jest · node:test Languages: TypeScript · JavaScript · Node.js · Python · SQL CI/CD & infrastructure: GitHub Actions · Spinnaker · Jenkins · Docker · Kubernetes · AWS · GCP
- 🎤 Clash of the Titans: Cypress vs Playwright · Continuous Testing Meetup
- 🎤 The elements of test automation · Regional Scrum Gathering 2021
- 🎤 Automation beyond the Selenium script · Romanian Testing Conference 2020
- 🎤 (Testing) Expectations VS (Augmented) Reality · Agile Testing Days 2019 and SEETEST 2019
- 📝 Static Code Analysis: The Underrated Ally · Quality Matters magazine, issue 12 (2021)
- 📝 Summoning your API test automation in one day · Quality Matters magazine, issue 10 (2020)
- ✍️ More articles and notes at zeljkovic.com
Certifications: ISTQB® Advanced Level Test Manager · ISTQB® Foundation Level · ISTQB® Agile Tester Extension
Have a test suite nobody trusts, or a pipeline that takes too long? Email dev@zeljkovic.com or message me on LinkedIn.