Ivan Kold

Ivan Kold

Los Angeles, California, United States
199 followers 196 connections

About

Architect of complex high-load distributed systems.
I Love low-level code, Linux…

Activity

Experience

  • Eccentex Corporation Graphic

    Eccentex Corporation

    Culver City, California, United States

  • -

    Greater Los Angeles Area

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    Greater Los Angeles Area

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    Moscow, Russian Federation

Education

  • State University of Aerospace Technology

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    BTW, I've learned how to build space rockets!

Projects

  • Pipeline Document Management System for Southern California Gas Company (SEMPRA)

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    Designed and supervised development of highly configurable document and digital asset management system for pipeline design documents.

    Technologies: Apache Solr, Ext.js, Ext.NET, C#, Oracle PL/SQL, Java, JavaScript.

    Other creators
  • Dynamic Case Management cross-platform universal mobile application

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    Designed and implemented cross-platform (iOS, Android) universal (phone, tablet) mobile application for company's flagship product - Dynamic Case Management system.

    Technologies: Apache Cordova, Adobe PhoneGap, Ext.js, JavaScript.

    Other creators
  • My Projects: Case management system for Southern California Gas Company (SEMPRA)

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    Internal case and project management system for pipeline design and building processes.

    Technologies: Ext.js, Ext.NET, C#, Oracle PL/SQL, Java, Jasper, JavaScript, XSLT.

    Other creators
  • New York State Insurance Complaint management system

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    Insurance company complaint management system for New York State Department of Financial Services.

    Technologies: Ext.js, Ext.NET, C#, Oracle PL/SQL, Java, JavaScript, WebDAV, XSLT.

    Other creators
  • Internal javascript framework

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    Set of javascript helpers and Ext.js plugins for rapid solution development.

  • Fraud detection & prevention system

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    System for automated analysis of users' behavior, recognizing of fraud patterns, marking suspicious users across credentials/devices, controlled blocking of unwanted behavior.

    Technologies: PHP5, MySQL, memcached, nginx.
    NDA.

    Other creators
  • insurance.auto.ru

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    Site for selling car insurance. Customer & Agent interfaces.
    (The project is discontinued)

    Other creators
    See project
  • cars.auto.ru

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    The cars.auto.ru is the most popular classifieds site for used/new cars in Russia.
    30M+ page views per day at the time.
    Works on PHP (tens of servers), MySQL (master-slave, 5+ slaves), memcached (5+ servers), nginx, CentOS linux.

    Other creators
    See project
  • Support task force team

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    Dedicated quick response team to investigate and fix major and critical issues, across all sub-projects, in timely manner, offloading other teams that dedicated for new features development.

    Other creators
  • books.auto.ru - Book shops aggregator

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    Developed book shops aggregator that was getting huge books lists from multiple sources (shops) in various formats (XML, JSON, CSV), finding duplicate books by ISBN and other criteria, merging them into single database without duplicates, thus when a book was in stock in multiple shops, user had ability to choose where to buy.

    Technologies: PHP5, cURL, MySQL, XML, HTML/CSS/JavaScript, nginx, CentOS linux.
    (The project is discontinued)

    Other creators
    See project
  • Isilon NAS hardware cluster integration

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    The auto.ru was starting to integrate Isilon hardware NAS cluster (10 servers) as storage for images.
    I was developing software part in order to integrate the NAS as a storage for all user uploaded images (~20,000 new images per day), replacing existing solution across all 50+ sub-sites of auto.ru.
    Result was library that has clear API, handled file upload, resizing, adding of watermarks ((c) protection), deleting and other manipulations of images in distributed…

    The auto.ru was starting to integrate Isilon hardware NAS cluster (10 servers) as storage for images.
    I was developing software part in order to integrate the NAS as a storage for all user uploaded images (~20,000 new images per day), replacing existing solution across all 50+ sub-sites of auto.ru.
    Result was library that has clear API, handled file upload, resizing, adding of watermarks ((c) protection), deleting and other manipulations of images in distributed environment.

    Technologies: PHP5, NFS, WebDAV, XML, Apache httpd, CentOS linux.

    Other creators
    See project
  • Hierarchical cross-sites comments system for auto.ru

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    Developed hierarchical comments system to use it across all sites owned by auto.ru .
    The system has following features:
    * suspicious comments detection (spam, foul lang.),
    * one convenient place for moderation of all suspicious comments regardless of the sub-project where they left,
    * easy integration into any project,
    * inline AJAX edit/deletion of a comment for it's creator, and for site's moderator / administrator.

    Other creators
    See project
  • news.auto.ru - the automobile news portal

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    Developed public news portal and internal portal for editors.
    Technologies: PHP5, ImageMagick, HTML/CSS/JavaScript, MySQL, nginx, CentOS.

    Other creators
    See project
  • "Cars similar to this" smart widget

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    Developed widget that shows cars softly similar to that one user looking at.
    Features:
    * 5 cars suggested at once, each has close price (± X%), similar body style (e.g. for sedan, convertible could be suggested, but not a truck), close year of manufacture (± Y years), and other soft criteria...
    * Very high load. The pages where the widget is placed requested ~30 millions times per day.

    Other creators
    See project
  • The Auto.ru car classifieds magazine

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    Solely developed internal system to create ready-to-print PDFs that printed into real-world glossy paper magazine (~100 pages, 50k copies per issue).
    System was getting data from the DB, sorting it into sections (by make/model), filtering the data set to achieve certain pages count, inserting graphic advertisement blocks, and rendered the data into PDF as text blocks, each with picture of a car, into multiple columns layout.
    Technologies: PHP5, PDFlib, ImageMagick, MySQL, CentOS…

    Solely developed internal system to create ready-to-print PDFs that printed into real-world glossy paper magazine (~100 pages, 50k copies per issue).
    System was getting data from the DB, sorting it into sections (by make/model), filtering the data set to achieve certain pages count, inserting graphic advertisement blocks, and rendered the data into PDF as text blocks, each with picture of a car, into multiple columns layout.
    Technologies: PHP5, PDFlib, ImageMagick, MySQL, CentOS linux.
    (The project is discontinued)

    See project

Languages

  • English

    Full professional proficiency

  • Russian

    Native or bilingual proficiency

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