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Oleg Khimich, PHP Developer in Odessa, Odessa Oblast, Ukraine
Oleg Khimich

PHP Developer in Odessa, Odessa Oblast, Ukraine

Member since December 31, 2014
Oleg has more than 15 years of experience in the IT industry. Prior to joining RingCentral, he was involved with a mobile game startup in partnership with USPC, which is a branch of Jarden Corp. Prior to that, he went through a chain of his own start-ups, focused on a fusion of tech innovation, online marketing, and product sales. He is passionate about technology, has an energetic mindset, and is always open to new technologies and knowledge.
Oleg is now available for hire

Portfolio

  • RingCentral
    Qt, C++, QML, PHP, Yii, MySQL, RabbitMQ, PostgreSQL, MySQL Galera
  • Zeniz
    PHP daemon, MySQL, FreeBSD, iOS, Android
  • MFA Monsters
    FreeBSD, PHP, Apache, MySQL, SEO, Data mining, JpGraph

Experience

  • PHP, 17 years
  • MySQL, 17 years
  • Apache, 17 years
  • Product Management, 10 years
  • Technical Project Management, 10 years
  • Data Science, 5 years
  • Agile Software Development, 4 years
  • Big Data, 3 years
Odessa, Odessa Oblast, Ukraine

Availability

Part-time

Preferred Environment

MacOS, PhpStorm, Git, Linux

The most amazing...

...marketing research I've done is an analysis of the content from all international domains using a custom-built big data processing framework.

Employment

  • Technical Director

    2012 - PRESENT
    RingCentral
    • Led R&D as well as product architecture design and review along with performance optimizations.
    • Achieved a strategic goal of corporate standardization and innovation in the area of the software development process.
    • Developed an enterprise crash-reporter analytic system for receiving data, conducting analysis, and creating reports for corporate application software.
    • Optimized an existing web tracking system to achieve the goal for a request being served in <20ms.
    • Integrated a corporate-level content management system with Adobe Experience Manager.
    Technologies: Qt, C++, QML, PHP, Yii, MySQL, RabbitMQ, PostgreSQL, MySQL Galera
  • Product Director/Engineering Manager

    2011 - 2012
    Zeniz
    • Led the iOS and Android development teams to develop a mass multiplayer mobile game.
    • Led the back-end developer group, who developed asynchronous back-end architecture with the help of the PHP Daemon framework. This allowed us to serve thousands of online players per computer node.
    • Integrated the workflow between the creative department and mobile UI development. Using QML, we've been able to overcome the issue with the plenty of different Android screen resolutions.
    • Coordinated marketing activities and put them on the analytic reports to estimate the performance of various market channels.
    Technologies: PHP daemon, MySQL, FreeBSD, iOS, Android
  • Senior Systems Architect

    2010 - 2011
    MFA Monsters
    • Developed a custom content management system for serving content at hundreds of domains distributed on various dedicated hosting boxes.
    • Responsible for the core back-end and analytic tools with different sources of statistical data.
    • Built a graphic-intensive reports system that uses a data mining process.
    • Developed caching and failover techniques to maintain high availability and zero downtime for critical parts of the system.
    Technologies: FreeBSD, PHP, Apache, MySQL, SEO, Data mining, JpGraph

Experience

  • Distributed Web Scraper (Development)

    Using Amazon EC2, the framework allows to scrape. parse, and process the data to monitor competitors. This allows a company to incorporate dynamic pricing models into its business.

  • Increased Conversion Rate for Web Site (Other amazing things)

    I designed and developed a multi-variant testing framework for a product sales website. According to external benchmarking, this allowed the site to outperform its competitors for 50% in sales. Overall, this increased the company's revenue up to 200%.

Skills

  • Languages

    PHP, HTML, JavaScript, Python, C
  • Frameworks

    Laravel, PHPUnit, Codeception, Yii, Smarty, Yii 2, AngularJS
  • Libraries/APIs

    Amazon API, REST APIs, LinkedIn API, Facebook API, RADIUS, Salesforce API
  • Tools

    Amazon CloudFront CDN, Composer, PhpMyAdmin, cURL Command Line Tool, php-fpm, Nginx, Apache, OpenVPN, RabbitMQ, VMware, GCC, Tableau, Sumo Logic
  • Paradigms

    Kanban, Agile Software Development, Database Design, Data Science, Waterfall Development, Change Management
  • Platforms

    FreeBSD, AWS EC2, MacOS, Ubuntu, CentOS
  • Storage

    SQLite, Database Modeling, Database Performance, MySQL, AWS S3, Database Replication, Memcached, MongoDB
  • Other

    Performance Optimization, Front-end, Content Management Systems (CMS), Data Analysis, Data Mining, Technical Project Management, Project Management, Product Management, Product Development, Web Development, Back-end Development, Business Intelligence (BI), Big Data, BIND9, Lean Development, Lean Startups, VMware ESXi, PHPDoc

Education

  • Master's degree in Business Administration
    2007 - 2009
    IBR-Institute (Steinbeis-Hochschule-Berlin) - Germany
  • Master's degree in Computer Science
    1998 - 2002
    Odessa National Academy of Telecommunications - Ukraine
  • Bachelor's degree in Computer Hardware Engineering
    1994 - 1998
    Odessa Technical College - Ukraine
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