Development services · Warsaw, Poland

QA & testing

Structured QA before launch: test plans, regression passes, API checks and browser matrices - bugs caught before your customers find them.

QA testing services Warsaw Poland

QA & testing scope

  • Test plan and checklist from user stories
  • Functional testing of forms, auth and checkout
  • Cross-browser and mobile device matrix
  • API contract testing (Postman / automated)
  • Regression after each sprint or release
  • Performance smoke tests and error monitoring review
  • Bug reports with steps to reproduce and severity

Quality assurance process

I test critical paths first: login, pay, submit, delete account.

Edge cases matter - empty carts, expired sessions, double clicks on pay.

Automated tests where ROI is clear; exploratory testing where UX is new.

Polish releases: PL/EN switching, local payment sandboxes, mobile carriers.

US releases: analytics firing, cookie consent and Safari-specific quirks.

Testing tools

PlaywrightCypressPHPUnitPestPostmanBrowserStackLighthouseGitHub Actions test jobs

Technical overview

How I plan and run QA

QA starts with critical paths: login, pay, submit forms and account deletion. I write test plans from user stories, run functional and regression passes, and file bugs with severity and clear steps to reproduce.

Cross-browser and mobile matrices catch layout and Safari quirks. API contract tests catch backend drift before the UI is blamed. Playwright or Cypress cover stable happy paths; exploratory testing covers new flows that are too early to lock into automation.

Edge cases matter commercially: empty carts, expired sessions, double clicks on pay, wrong locale strings. Performance smoke checks and error-monitor review sit beside functional QA so a green suite does not hide production exceptions.

Common QA tasks I help with

  1. How to write a test plan from user stories before launch
  2. How to regression-test checkout after a release
  3. How to cover a browser and mobile device matrix efficiently
  4. How to add API contract tests for critical endpoints
  5. How to reproduce and report a race on double-submit pay
  6. How to automate stable happy paths with Playwright or Cypress
  7. How to test expired sessions and empty-cart edge cases
  8. How to verify analytics events without breaking consent flows
  9. How to triage bugs by severity for a short release window
  10. How to run a performance smoke check before go-live

Warsaw · Poland · Europe · USA

Remote-first development with local presence in Warsaw - the same senior engineer for Polish, European and American clients.

Warsaw

QA engineer Warsaw - pre-launch testing for local apps and stores.

Poland

Remote QA passes for Polish agencies before client handover.

Europe

Locale and compliance flows validated for EU users.

USA

Regression testing aligned with US release windows and campaigns.

Development + SEO

We do not only build - we promote

Pre-launch QA catches broken forms; post-launch SEO catches invisible pages - I offer both so your site works and ranks in Warsaw, Poland and abroad.

Website promotion & SEO
Viktar Liukevich

About me

I'm Viktar Liukevich

Full-stack developer · 15+ years creating web

I am Viktar Liukevich - a developer who runs QA in Warsaw because I also fix what I find. Test plans, regression passes and API checks before your customers hit a broken checkout.
I test critical paths first: login, pay, submit, delete account. Edge cases matter - empty carts, expired sessions, double clicks on pay. Polish releases get PL/EN and local payment sandboxes; US releases get Safari quirks and consent flows.
For large browser matrices, dedicated accessibility audits or long-running automated suites, I bring in QA partners in Poland, Europe and the USA - manual testers and Playwright/Cypress engineers under NDA. I triage bugs and ship fixes; they expand coverage when scope demands it.
300+
Completed Projects
90+
Clients
10+
Partners

Advantages

  • 15+ years working for myself
  • Wide technology stack
  • Rapid development
  • Warranty and support
  • Global quality standards
  • Working with clients worldwide
  • Innovative technological solutions