Сергей К.

FreelancersСергей Ковальчук

Ukraine Nikolaev, Ukraine
1 year ago
Available for hire Available for hire
registered for 2 years

Specialization

Testing and QA
1155 place out of 1358
HTML/CSS 1
9211 place out of 9503
Position in global rating 2231
  110371 place out of 227217

Skills

Contact information

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