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Damir Zekić, Ruby Developer in Málaga, Spain
Damir Zekić

Ruby Developer in Málaga, Spain

Member since November 12, 2014
Damir is a full-stack web developer who has been writing web applications for eighteen years using a variety of languages and technologies, but since 2008 he has been focusing largely on Ruby and Ruby on Rails. He has a good sense for UX and is committed to every detail when implementing user interface designs with HTML, CSS, and JavaScript.
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Portfolio

  • Freedom.to
    ECMAScript (ES6), Pair Programming, Kanban, Technical Project Management...
  • Totpal, LLC
    ECMAScript (ES6), Pair Programming, Kanban, Technical Project Management...
  • Blue River Technology (via Toptal)
    ECMAScript (ES6), HTML5, Amazon Web Services (AWS), Git, GitHub, JavaScript...

Experience

Location

Málaga, Spain

Availability

Part-time

Preferred Environment

Git, Vim Text Editor, Tmux, OS X

The most amazing...

...optimization I've made was to embed images into a cached piece of HTML to reduce CDN costs for a client who had a widget on a high-traffic website.

Employment

  • Software Engineer

    2018 - PRESENT
    Freedom.to
    • Added support for blocking international domain names.
    • Maintained an API developed with Ruby on Rails.
    • Implemented a mechanism for upgrading user accounts with codes that open new business opportunities for volume licensing.
    Technologies: ECMAScript (ES6), Pair Programming, Kanban, Technical Project Management, SCSS, Agile Software Development, PostgreSQL, Test-driven Development (TDD), Heroku, Git, Ruby on Rails (RoR), GitHub, Ruby, JavaScript, CSS, React

  • Software Engineer, Team Lead

    2015 - 2018
    Totpal, LLC
    • Led a remote team that worked on improving development ergonomics (improving speed and quality of tests and CI pipeline; overseeing a migration to Granite—a framework developed within the company).
    • Debugged a problem between an internal framework and Ruby language that was causing a slowdown for about 80 other developers in the team when running the application locally.
    • Migrated images stored on a local filesystem to Amazon S3 and upgraded the codebase to work with the new storage seamlessly.
    • Led a remote team that worked on new features inside a big monolithic Ruby on Rails application with Granite and a custom programming environment/language to describe business processes.
    • Maintained a billing system implemented inside a big monolithic Ruby on Rails codebase.
    • Conducted live technical interviews with candidates for Ruby engineer roles. Contributed to the content of the interview process.
    • Maintained and added new features to an API implemented with Grape on top of Ruby on Rails.
    • Launched TopTracker, a time tracking software for freelancers. Co-ordinated stress tests of the API with a QA engineer and production machine setup with an infrastructure engineer ensuring a smooth launch.
    Technologies: ECMAScript (ES6), Pair Programming, Kanban, Technical Project Management, SCSS, PL/pgSQL, Amazon Web Services (AWS), Agile Software Development, PostgreSQL, Test-driven Development (TDD), RSpec, Git, Ruby on Rails (RoR), GitHub, Ruby, Granite, GrapesJS, Amazon S3 (AWS S3), React

  • Developer

    2014 - 2015
    Blue River Technology (via Toptal)
    • Created a UI that allows Mechanical Turk workers to label images using point-and-click interface with HTML5 and JavaScript.
    • Developed a Broccoli plugin that allows embedding JavaScript code into the HTML template for distribution.
    • Wrote a web app that allows importing of CSV files with a drag-and-drop interface.
    • Designed and implemented an algorithm for clustering data from multiple Mechanical Turk workers.
    Technologies: ECMAScript (ES6), HTML5, Amazon Web Services (AWS), Git, GitHub, JavaScript, Amazon Mechanical Turk

  • Contractor

    2014 - 2015
    Nehemia Consulting
    • Developed a Windows application using WPF.
    • Wrote an application combining C# and F#, using C# for user interface and F# for calculation-heavy logic.
    • Created a robust UI that allows importing from Excel and plaintext files in various formats.
    • Implemented training of MLR models with validation and prediction.
    Technologies: Caliburn.Micro, Git, F#, C#, Windows Presentation Foundation (WPF)

  • Lead Developer

    2013 - 2014
    Starting Point
    • Created a fashion eCommerce website with CMS implemented using Ember.js.
    • Integrated the checkout process with Authorize.net API for processing customer payments.
    • Integrated the application with DHL API to support drop shipping from sellers directly to customers.
    • Developed a flexible web-based tool to import data from Excel and CSV files with prediction to guess a correct file format.
    • Led a team of three developers.
    • Designed an algorithm for dynamic pricing of goods.
    Technologies: Adobe Photoshop, Mocha, Chai, Pair Programming, Kanban, Technical Project Management, SCSS, HTML5, PL/pgSQL, Authorize.net, Agile Software Development, Scrum, Behavior-driven Development (BDD), PostgreSQL, Test-driven Development (TDD), Ember.js, Heroku, jQuery, RSpec, Git, Ruby on Rails (RoR), GitHub, Ruby, JavaScript, CSS, HTML

  • Full-stack Web Developer and Co-founder

    2010 - 2013
    Ganxy
    • Created an embeddable widget allowing preview and purchase of ebooks and audio/video materials.
    • Integrated the application with Stripe to process customer payments.
    • Maintained and refactored a large Ruby on Rails application.
    • Conducted BDD with RSpec, Mocha, and Chai.
    • Worked in a geographically distributed team.
    • Collaborated closely with a UI/UX designer to faithfully implement designs with HTML and JavaScript.
    Technologies: Adobe Photoshop, Mocha, Chai, Pair Programming, SCSS, HTML5, PL/pgSQL, Agile Software Development, Stripe, jQuery UI, Behavior-driven Development (BDD), PostgreSQL, Test-driven Development (TDD), Ember.js, Heroku, jQuery, RSpec, Git, Ruby on Rails (RoR), Ruby, JavaScript, CSS, CoffeeScript

  • Software Engineer

    2004 - 2007
    Orka.ba
    • Implemented a web application for stock trading.
    • Developed a student information system for the largest university in Bosnia and Herzegovina.
    • Created a workflow management system used by several government institutions in Bosnia and Herzegovina.
    • Conducted TDD with NUnit.
    • Wrote and maintained stored procedures.
    Technologies: T-SQL, Microsoft Visual Studio, JavaScript, CSS, Microsoft SQL Server, ASP.NET, Windows Forms (WinForms), C#, Visual Basic, PHP

  • Intern Web Developer

    2004 - 2005
    BH Telecom
    • Implemented a new version of an online phone book for the biggest telecom company in Bosnia and Herzegovina.
    • Created a domain-specific CMS for a gaming website with PHP.
    • Used Ajax to check the availability of user names.
    • Made a plugin for TYPO3.
    • Developed a search engine based on data stored in an Oracle database.
    Technologies: MySQL, JavaScript, CSS, Oracle, PHP

Experience

  • A Toolbelt of a Seasoned Bug Hunter
    https://www.youtube.com/watch?v=11Z4Fx8dXhc

    Presented a talk on debugging performance issues and memory problems in Ruby applications at wroc_love.rb 2018, Ruby Meditation #19, and Minsk.rb.

  • Ruby on Rails and programming courses
    http://www.academy387.com/lecturers/damir-zekic

    Introductory courses to Ruby on Rails and programming for beginners.

  • BH Telecom Phone Book Search

    A TYPO3 plugin that searches Oracle DB.

  • Ganxy

    A digital content distribution startup with embeddable widgets for previewing and buying content.

Skills

  • Languages

    Ruby, JavaScript, SCSS, CoffeeScript, CSS, HTML, C#, Visual Basic, HTML5, ECMAScript (ES6), PHP, T-SQL, PL/pgSQL, F#

  • Frameworks

    Granite, Ember.js, Ruby on Rails (RoR), Caliburn.Micro, ASP.NET, Windows Presentation Foundation (WPF), GrapesJS

  • Libraries/APIs

    jQuery, React, Chai, jQuery UI, Stripe, Windows Forms (WinForms), Authorize.net

  • Tools

    GitHub, Git, RSpec, Shell, Vim Text Editor, Mocha, Tmux, Adobe Photoshop, Microsoft Visual Studio

  • Paradigms

    Test-driven Development (TDD), Agile Software Development, Kanban, Behavior-driven Development (BDD), Object-oriented Programming (OOP), Pair Programming, Scrum, Functional Programming

  • Platforms

    Heroku, MacOS, Oracle, OS X, Amazon Web Services (AWS)

  • Storage

    PostgreSQL, Amazon S3 (AWS S3), SQLite, MySQL, Microsoft SQL Server

  • Other

    Technical Project Management, Amazon Mechanical Turk

Education

  • Bachelor's Degree in Computer Science
    2007 - 2010
    Graz University of Technology - Graz, Austria

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