Step 6 · Full-cycle development

Testing & debugging

Functional, cross-browser and performance testing on real devices. Bugs fixed and edge cases covered before your public launch in Poland, Europe or the USA.

Website testing and quality assurance

Testing checklist

  • Functional testing of forms, checkout and user flows
  • Cross-browser testing (Chrome, Safari, Firefox, Edge)
  • Mobile and tablet verification on real hardware
  • Performance profiling and bottleneck fixes
  • Security smoke checks and error handling review
  • Regression pass after bug fixes

Quality before go-live

I test like a user, not only like a developer - broken links and confusing errors get caught early.

Checkout, login and password reset flows are always high priority; one bug there costs real money.

Performance issues are fixed before launch, not blamed on hosting later.

Polish launches often need PL/EN language switching and payment sandbox runs verified end-to-end.

US launches get extra attention to analytics, cookie banners and third-party script load order.

Clients in Warsaw, Poland, Europe & the USA

Same full-cycle quality whether you are around the corner in Warsaw or building for a US market from day one.

Warsaw

Pre-launch QA for Warsaw clients - optional on-site demo before DNS switch.

Poland

Testing against Polish payment sandboxes, shipping plugins and local carrier integrations.

Europe

Locale, VAT and consent flows validated for EU visitors.

USA

US browser share and mobile breakpoints validated before campaigns go live.

Viktar Liukevich

About me

I'm Viktar Liukevich

Full-stack developer · 15+ years creating web

Shipping without testing is gambling. I debug systematically and leave you a stable build, not a launch-day fire drill.
Projects for Warsaw, Poland, Europe and the USA all get the same disciplined QA - remote or in person.
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