Oleg Kalistratov

Oleg Kalistratov

Senior Rails/Python + JavaScript Developer

Nizhny Novgorod, Russia

$80.00/hr

(4.99)

What's the difference?
Overview

I solve problems. You can hire 2 developers for the same price, but once you run into an issue none of them can solve, you'll probably understand why 'cheaper' isn't 'better'. And no, I don't write code twice as fast as the others do. I work better, not faster.
I specialize in developing rich web applications in Ruby on Rails (Python is also an option), HTML5 and JavaScript frameworks (Backbone, Ember). Some other tools/libs I use in my work: MySQL/PostgreSQL/MongoDB, jQuery, Twitter Bootstrap, …

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Oleg Kalistratov has added 4 portfolio pieces. Create an account to review them.

Work History & Feedback

SEPARATE ONE BANK DATA FILE TO SEVERAL DATA FILES AND ALLOCATE MONEY TO INVOICES

“The job was a bit complex to understand - which I learned from other freelancers interviewing for the job. Oleg understood the task immediately and delivered a solution surprisingly fast. I'm very impressed.”
4.40
9 hrs @ $60.00/hr
Earned $540

Ruby on Rails Developer

“Oleg was flippin' awesome. Got the dev environment setup quick and had a prototype within hours of starting. Can't wait to work with him again.”
5.00
Fixed Price $800

RoR Stock Trading Website

“We needed some very complicated web development. I was amazed how quickly Oleg understood our very obscure requirements. Although he was very responsive, I failed to find time to check in with him regularly during his development. That is why I was amazed when he delivered the product. He had the insight and intuition to fill in all of the subtle details that I failed to give him originally. He did everything the way that it should be done, with code that was clean, efficient, and fully functional. I have no doubt I will hire Oleg again in the future.”
5.00
93 hrs @ $38.90/hr
Earned $3,605

UI & Front-End Dev (ERB, HTML(5)/CSS(3), JS with good Rails and Rspec Capabilities)

“Oleg has achieved beyond expectations and on a regular basis. He is a talented developer and someone you can count on to deliver quality solutions. His skills with front end development has really helped us achieve what we wanted to do with our website.”
5.00
233 hrs @ $27.78/hr
Earned $6,524

expert HTML5/CSS3 coder

“I liked very much to work with Oleg, I will instantly hire him again when he has enough time...”
5.00
58 hrs @ $16.67/hr
Earned $975

Senior Front-End Engineer

“Great to work with.”
5.00
29 hrs @ $17.00/hr
Earned $496
Tests Taken
Name Percentile Score

CSS 2.0 Test

99

HTML 4.01 Test

99

HTML 5 Test

90

Java Test

77

JavaScript 1.3 Test

80

Knowledge of jQuery 1.3.2 Skills Test

74

PHP5 Test

89

Programming with C Test

93

Programming with C++ Test

93

Ruby on Rails Test v1 (Old)

83

Search Engine Optimization Test

82

U.S. English Basic Skills Test

76