Denis Grankin

Denis Grankin

Full stack Software Developer

Merefa, Ukraine



What's the difference

I started programming for Spectrum somewhere in mid school and quickly realized it's a thing of my life. Living off software development since 1998, from spaghetti PHP to Ruby on Rails to Meteor.js I've carefully selected my stack of choice. I'm a Polymer and Material Design adept, when it comes to UI. Docker, Fleet, CoreOS and friends are my loved operational tools. I'm a patient, confident and cooperative team player.

Denis Grankin has added 3 portfolio pieces. Create an account to review them.

Work History & Feedback

RoR mongoid simple-form problem solver

“Superb contractor!”
Fixed Price $11

Ruby on Rails Developer with MongoDB experience

“Feature was yet fully completed. My expectation to Denis on fully completion on next hiring.”
38 hrs @ $30.00/hr
Earned $1,130

RRD ruby graphing library for XenServer

“Denis did fantastic work, and had very high quality code. He is a very talented developer and I'll call on him first for any rails project needs we have in the future.”
10 hrs @ $33.33/hr
Earned $328

Rails 3 Expert

No feedback given
228 hrs @ $33.33/hr
Earned $7,605

AJAX Programmer

No feedback given
Fixed Price $222

Ruby on Rails mysql guru

No feedback given

0 hrs @ $33.33/hr
Earned $11

Rails developer + Frontend (js + jQuery)

Job in progress

6 hrs @ $33.33/hr
Earned $189

Ruby on Rails Project

Job in progress

93 hrs @ $33.33/hr
Earned $3,089
Tests Taken
Name Percentile Score

CSS 2.0 Test


Networking Concepts Test


Ruby on Rails 2.3 Test


Software Testing Test


Upwork Readiness Test for Independent Contractors and Company Managers


XHTML 1.0 Test