Oleg Kalistratov
Drop Here

Oleg Kalistratov

Senior Rails/Python + JavaScript Developer

$80.00/hr

Nizhny Novgorod, Russia


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

I solve problems. You can hire 2 developers for the ... moresame 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, HAML/SLIM/SCSS/Coffeescript, Git/Github, Heroku. My background also includes: PHP, C/C++ (system and desktop programming), Qt, .NET/C#, Android development. less

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, HAML/SLIM/SCSS/Coffeescript, Git/Github, Heroku. My background also includes: PHP, C/C++ (system and desktop programming), Qt, .NET/C#, Android development.

Oleg Kalistratov
Drop Here

Oleg Kalistratov

$80.00 /hr

Senior Rails/Python + JavaScript Developer

Nizhny Novgorod, Russia

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, ... moreTwitter Bootstrap, HAML/SLIM/SCSS/Coffeescript, Git/Github, Heroku. My background also includes: PHP, C/C++ (system and desktop programming), Qt, .NET/C#, Android development. less

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

Work History and Feedback

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

    Jan 2015 - Mar 2015
    4.40
    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.

    9 hours

    $60.00 / hr
    $540.00 earned

  • Ruby on Rails Developer

    Jan 2015 - Feb 2015
    5.00
    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.
    $800.00 earned
    Fixed Price

  • RoR Stock Trading Website

    Oct 2012 - Mar 2013
    5.00
    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.

    93 hours

    $38.90 / hr
    $3,605.24 earned

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

    Jul 2012 - Oct 2012
    5.00
    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.

    233 hours

    $27.78 / hr
    $6,523.58 earned

  • expert HTML5/CSS3 coder

    Jul 2012 - Aug 2012
    5.00
    I liked very much to work with Oleg, I will instantly hire him again when he has enough time...

    58 hours

    $16.67 / hr
    $975.20 earned

  • Senior Front-End Engineer

    Jun 2012
    5.00

    31 hours

    $22.22 / hr
    $681.49 earned

  • Senior Front-End Engineer

    Jun 2012
    5.00
    Great to work with.

    29 hours

    $17.00 / hr
    $495.89 earned

  • Ajax programmer needed

    Jun 2012
    No feedback given

    27 hours

    $14.44 / hr
    $389.88 earned

  • Developer

    Jun 2012
    5.00
    Oleg was very knowledgeable, attentive to detail and knew exactly what needs to get done and the best ways to do it. Everything was completed on time even though we had a rush deadline. Will definitely hire again.

    3 hours

    $13.33 / hr
    $42.26 earned

Oleg Kalistratov has more jobs to show. Create an account to review them.

Tests

NameScore (out of 5)Time to Complete
CSS 2.0 Test4.60Top 10%25 mins
HTML 5 Test4.40Top 10%33 mins
HTML 4.01 Test4.50Top 10%32 mins
Ruby on Rails Test v1 (Old)4.00Top 20%36 mins
Programming with C++ Test4.00Top 10%31 mins
Programming with C Test4.00Top 10%30 mins
Knowledge of jQuery 1.3.2 Skills Test4.10Top 30%37 mins
JavaScript 1.3 Test3.90Top 20%21 mins
PHP5 Test4.25Top 20%26 mins
Java Test3.10Top 30%39 mins
Search Engine Optimization Test3.25Top 20%36 mins
U.S. English Basic Skills Test4.00Top 30%29 mins
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100% Job Success
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Work History
3,453 hours worked
21 jobs
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Available
Less than 30 hrs/week
24 hrs response time
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