I am a mobile app and software developer with over 10 years of solid experience developing various kinds of apps ad softwares including the following industries like: Healtcare, Food and Drink, Accounting, Finance. I've programmed and debugged java and swift based loan web application, healtcare mobile app. Developed databases using SQL, Mongo DB, Maria DB; tested applications functionalites, navigation, error codes, securtity, browser capability; collaborated with programmers, project managers as well, migrated websites content to the otyher ones. My communication languages are English, Russian and am looking forward to long-term relationship and great projects programming on upwork.
More than 30hrs/week
December 2, 2017 - January 17, 2018
Great developer. Will be continuing to work with Sergey.
January 23, 2018 - February 13, 2018
He is an awesome developer! Very trustworthy and kind. Great experience to work with.
February 20, 2018 - March 31, 2018
Sergey is a highly experienced developer, he knows a lot of IOS development related technologies, and he is dedicated, responsible and very committed to his work.
April 12, 2018 - April 28, 2018
He's work is great, speedy and highly efficient. He understands and looks at the detail and knows every aspect of the instructions given. We look forward to working with you on our next project.
May 9, 2018 - May 23, 2018
Great developer! Excellent work, great communication and availability, looking forward to our next joint project.
June 18, 2018 - July 26, 2018
Sergey is very reliable. Look forward to working with you. Thank You
California Institute of Technology