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Orest Kulik

Orest Kulik

Zagreb, Croatia
Member since March 25, 2013
Orest is an experienced server side Software Engineer who has been developing software for 15+ years. His language of choice is Ruby which he uses for creating scalable web apps and REST API services. He is a self-driven worker who takes ownership and responsibility in what he creates.
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Portfolio
  • Labtiva
    Ruby, Ruby on Rails, AngularJS, Node.js, Heroku, AWS, EC2, S3, RDS, MySQL...
  • RealNetworks
    C++, Java, J2ME, Eclipse, GCC, Brew (Quallcom), Subversion, CVS, Redmine...
  • SecurityHeroes
    C++, C#, WCF-REST, JavaScript, Crypto++, XPCOM, XUL, Subversion, Trac
Experience
  • Ruby on Rails (RoR), 6 years
  • JavaScript, 5 years
  • MySQL, 5 years
  • Amazon Web Services (AWS), 4 years
  • Mercurial, 4 years
  • Git, 3 years
  • PostgreSQL, 3 years
  • Objective-C, 1 year
Zagreb, Croatia
Availability
Part-time
Preferred Environment
OSX, Sublime Text, Git
The most amazing...
...thing I've developed is a significant portion of the back-end for Labtiva's ReadCube application.
Employment
  • Senior Software Developer
    2011 - 2015
    Labtiva
    • Handled web-based back-end software development for ReadCube, Labtiva's platform for managing research literature and scientific articles discovery using modern open-source web technologies.
    • Created server-side systems for log storage and analysis, PDF document usage heat maps, web scraping, collaborative recommendations, article timelines, and sync services (between multiple client applications).
    • Sustained and tuned performance for web applications and web services to run smoothly on Heroku and AWS.
    • Created and sustained different SQL and NoSQL data storages like MySQL, ElasticSearch, Neo4j, DynamoDB, Redis, and Memcached. Also created and sustained database load balancing and failover using mostly HAProxy.
    • Integrated web applications and web services with Google Analytics, Mixpanel, MailChimp, SendGrid, etc.
    • Created a REST API prototype to allow customers to query data.
    • Created a prototype AngularJS app for supporting the main web application.
    • Used Adobe AIR's native extension to help a desktop application to render PDFs more efficiently (for OSX and Windows platforms).
    • Hired as the first non-founder Software Developer in the company; assembled the initial development team and rented the office.
    Technologies: Ruby, Ruby on Rails, AngularJS, Node.js, Heroku, AWS, EC2, S3, RDS, MySQL, DynamoDB, Neo4j, SQS, SNS, SimpleDB, ElasticSearch, C++, C, JavaScript, Redis, ActionScript, Sinatra, Bash, Mercurial, Git, Objective-C, Visual Studio Express
  • Senior Software Engineer
    2010 - 2011
    RealNetworks
    • Worked on converting the existing J2ME mobile application to the Qualcomm's BREW platform.
    • Co-developed code dealing with differences between J2ME and Brew platforms such as a lack of threading, a lack of exception handling, and no garbage collection.
    • Implemented parts of the J2ME layer in C++ for the emulation layer.
    • Adapted the emulation layer for the target Brew platform.
    • Worked on the Real's J2ME/Android white label mobile application for media distribution and sharing, targeting mostly J2ME and Android handsets and tablets.
    • Sustained the existing code base by creating new widgets and incrementally transferring legacy J2ME code to the modern Android Java platform.
    Technologies: C++, Java, J2ME, Eclipse, GCC, Brew (Quallcom), Subversion, CVS, Redmine, Android
  • Architect, Senior Software Engineer
    2009 - 2010
    SecurityHeroes
    • Organized and led a small team in building a next-generation advertisement blocking product and web browser security product.
    • Created an extension for Firefox using C++, Crypto++, and JavaScript.
    • Created back-end web services using C#, WCF-REST, and SQL Server.
    • Designed a custom security protocol to allow safe client-server data exchange.
    • Coordinated outsourced system admins responsible for the maintenance and monitoring of the datacenter blade servers.
    Technologies: C++, C#, WCF-REST, JavaScript, Crypto++, XPCOM, XUL, Subversion, Trac
  • Senior Software Engineer
    2008 - 2009
    Syntellect (Enghouse Interactive)
    • Sustained and fixed bugs in one of the company's Interactive Voice Response applications.
    • Searched for performance bottlenecks and general code inefficiencies.
    • Developed additional VoiceXML specific functionality.
    • Created a server application for the integration of two separate IVR applications in Java .
    • Created a migration tool and transferred an existing source code repository from SourceSafe to Subversion.
    Technologies: C++, ActiveX, Java, Eclipse, VoiceXML, TTS, ASR, Dialogic, Subversion, Visual Studio, BoundsChecker, IBM Rational Purify
  • Consultant, Senior Software Engineer, Software Engineer
    1999 - 2007
    Ekobit
    • Participated in many different software development outsourcing projects (mostly for EU software companies like Lexware, Moba and Sauter). Worked almost exclusively with software development tools from Microsoft.
    • Gave a number of software development presentations related to Microsoft C++ and .NET technologies and their applications at local IT conferences like WinDays and DevDays.
    • Mentored junior Developers.
    • Earned the following Microsoft professional certificates: MCPD (Enterprise Application Developer, C#, Jun 2007), MCTS (Distributed, Web and Windows Apps, May/June 2007), MCSD (Early Achiever, C#, May 2003 and Visual Studio 6, C++, Oct 2000). Also earned more than a dozen different Brainbench Master certificates and three Job Role certificates.
    • Attended the following soft skills courses: presentation skills, successful business communication, nonviolent communication, time management, stress management, creativity development, self initiative development, and consultative selling.
    • Learned German within the period of employment and used it in daily communications with German-speaking customers.
    Technologies: C, C++, Visual Studio, MFC, ATL, STL, COM/ActiveX, OLEDB, BTrieve, .NET, C#, C++/CLI, Team System, Subversion
Experience
  • ReadCube (Development)
    https://www.readcube.com

    I was responsible for a significant amount of the back-end software for Labtiva's ReadCube, the application for managing research literature and scientific articles discovery.

Skills
  • Languages
    Ruby, JavaScript, C#, C++, Bash, JRuby, Objective-C, ActionScript 3, C++/CLI, Java
  • Frameworks
    Ruby on Rails (RoR), Sinatra, AngularJS
  • Libraries/APIs
    Ruby on Rails API, Node.js
  • Tools
    RSpec, AWS SQS, Eclipse IDE, Mercurial, Git, AWS Push Notification Service (AWS SNS), Visual Studio, Xcode, Flash Builder, Sublime Text 3, Subversion (SVN), Nginx
  • Paradigms
    Object-oriented Programming (OOP), Unit Testing, Agile Software Development, Concurrent Programming
  • Platforms
    Heroku, AWS EC2, Amazon Web Services (AWS), BREW, DigitalOcean
  • Storage
    PostgreSQL, AWS RDS, AWS S3, MySQL, Elasticsearch, Redis, Neo4j
  • Other
    HAProxy, HTTP
Education
  • Master's degree in Electrical Engineering and Computer Science
    1991 - 1997
    University of Zagreb - Zagreb, Croatia
  • Technician of Mathematics and Informatics degree in Mathematics and Informatics
    1987 - 1990
    Gymnasium for Mathematics and Informatics (MIOC) - Zagreb, Croatia
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