Vassil Kalkov

Short story

Constantly improving and self educating developer. Using Test Driven Development, Agile methodologies and Github branching workflow. True believer in the value of style guides, code consistency and continuous refactoring. Mad about hardware and geeky stuff such as Arduino, esp8266, Olinuxino ...

I believe it's important for a developer to have a balance between work and personal time for reading, experimenting, playing with different technologies and geeky things. For recreation I do biking, hiking, climbing and other outdoor activities.


tools_of_choice = %w(

dbs_of_choice = %w( PostgreSQL Redis )

dbs_i_have_tried = %w( MongoDB Riak CouchDB Neo4j )

frameworks_i_have_tried = %w( Sinatra Django Flask Express Symfony Zend )

some_shots_fired = %w( Python Node Arduino PHP C )

dev_ops = %w( Vagrant Puppet Chef Capistrano Packer Docker )


03/2015 - @ Receipt-bank(UK/Worldwide)

Senior Developer

receipt-bank - Receipt Bank extracts the key information from your bills, receipts and invoices, removing the need for manual data entry. Receipt Bank can then publish the data to your accounting software or it can be downloaded as a spreadsheet or used to create expense reports.

05/2014 - 02/2015 @ Leanshore(Germany/Worldwide)

Senior Developer - is tool for collection, collaboration and consolidation of data requests, implemented as multiple layered system with a SPA frontend.

Our stack: Rails, Angular.js, Postgres, MongoDB, Sinatra

02/2012 - 08/2014 @ Genshin(Japan/Worldwide)

Senior Developer

GAKUEngine - GAKUEngine is an open source school management system. It's highly modular, Rails engines based, with good test coverage.

05/2013 - 06/2013 @ Puzl(Varna, Bulgaria)

Puzl - Senior Rails Developer

11/2011 - 01/2013 @ Worldwide

Camplight - Senior Rails Developer

03/2011 - 08/2011 @ Bonex Data Systems(USA/Worldwide)

Developing e-commerce site using Spree, with a backend used for scraping other shops. A lot of background processing.

2009 - 2011

Freelancing Ruby on Rails.

2004 - 2008 @ Own bussiness

Built a farm for exotic animals and livefood. Developed a site using PHP and MySQL for exotic animals. Till 2008 it was the biggest society in Bulgaria for people interested in exotic animals. There were publications in some magazines, including ComputerBild Bulgaria.