Kostya S.

Kostya S.

Professional web and mobile (iOS, Android, WP) application development

Sevastopol, Ukraine



What's the difference

Hi, I am here to help you make cool web and mobile (iOS, Android, Windows Phone) apps. Check out my portfolio section and let's get in touch!

Kostya S. has added 13 portfolio pieces. Create an account to review them.

Work History & Feedback


11 hrs @ $27.78/hr
Earned $310
“Kostya has the ability to take a job and micro manage each day by day, email by email task and get it done on time, at great value, and timely feedback. What more can you ask!”


iPhone App Developer

Fixed Price $1,913
“Kostya's team did an outstanding job of building a difficult iPhone app -- one that uses location information.They were really responsive, helped me think through the interaction design and backend, and put a lot of effort into learning the latest about GPS and location based information. I plan to use them again in the future.”



32 hrs @ $20.00/hr
Earned $636
“Kostya has been a thorough Account Manager and is very timely with questions and feedback. We are continuing with Kostya and his associates to build our site.”



504 hrs @ $12.10/hr
Earned $1,484
“As always, better than the requirements. Superb communication and project management. Excellent work ethics. Always available with a solution for all needs. Am hiring him right now for my next project before one of you can get him.”


Expert PHP 4 developer

1 hrs @ $17.78/hr
Earned $35
“A reliable, honest and high quality developer. Would gladly hire again.”


Complete rebuild LT ecommerce website

308 hrs @ $14.52/hr
Earned $1,399
No feedback given


Stacking app

Fixed Price $3,163
Job in progress

Startup Project Consultant

1 hrs @ $27.78/hr
Earned $23
Job in progress

Tests Taken
Name Percentile Score

CSS 2.0 Test


HTML 4.01 Test


PHP4 Test


PHP5 Test


U.S. English Basic Skills Test