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Oscar A. Jara

Oscar A. Jara

Santa Fe, Santa Fe Province, Argentina
Member since February 12, 2013
Oscar is a top information systems engineer who has worked as a developer, system administrator, and university professor. He has extensive experience with low-level software development, and has worked with client-server, distributed, and fault tolerant web architectures.
Oscar is now available for hire
  • Linux, 11 years
  • System Administration, 11 years
  • PHP, 7 years
  • DevOps, 7 years
  • MySQL, 6 years
  • Git flow, 3 years
  • Python, 3 years
  • Amazon Web Services (AWS), 3 years
Santa Fe, Santa Fe Province, Argentina
Preferred Environment
Linux, Netbeans, AWS
The most amazing...
...thing I've coded is a libVLC-based app to control via Bluetooth two video outputs, one audio output, and a lightboard--concurrently.
  • DevOps
    RabbittApp LLC
    2015 - PRESENT
    • Designed, implemented, and administrated high-availability, auto-scalable, and secured AWS infrastructure.
    • Implemented secured VPC with VPN access.
    • Implemented load balanced public (web) and private (app) layers.
    • Implemented auto-scaling groups to support demand variation.
    • Implemented multi availability zone master/slave MySQL RDS.
    • Improved performance on SQL queries.
    Technologies: AWS, PHP, MySQL, Apache, Linux, Ubuntu, Bash
  • DevOps
    2014 - PRESENT
    • Handled daily Rackspace cloud sysadmin issues (e.g., web server and database migration and replication).
    • Supported to improve application efficiency and response time.
    • Handled MySQL DBA operations.
    Technologies: PHP, Bash, Ubuntu, Centos, Rackspace, MySQL, Apache, NewRelic
  • Advanced Operating Systems Professor
    Universidad Tecnológica Nacional
    2009 - PRESENT
    • Performed real-time and kernel-level Linux programming.
    • Developed client-server applications based on sockets and RPC technologies.
    • Taught and programmed device drivers.
    Technologies: C, Java, Bash
  • DevOps
    Arduino LLC
    2016 - 2016
    • Created a integrated interaction among DataDog (monitoring, visualization), AWS Autoscaling, SaltCloud (orquestration), and Drone (Continuous Delivery).
    Technologies: AWS, Autoscaling, DataDog, SaltStack, Drone
  • Full-stack Developer
    Evobits IT
    2015 - 2015
    • Created a template system.
    • Made a security audit on BitCoin related site.
    • Implemented an administrators internal messages subsystem.
    • Implemented several security measures in BitCoin related site (CSRF, XSS, SQL Injection, etc).
    • Developed a DDoS prevention subsystem based on Redis.
    Technologies: PHP, MySQL, HTML, CSS, JS, jQuery
  • Developer, System Administrator
    Universidad Tecnológica Nacional
    2010 - 2014
    • Supported an email management system using PHP and Perl with a MySQL back-end.
    • Created a distributed, multi-daemon watchdog system with Python and MySQL, which monitored resource availability and behavior (internet links and internet services), and automatically handled the routing of data and services.
    • Led migration to a fault tolerant LDAP-based architecture to support all university applications.
    • Provided security consultations for new web PHP, HTML, and JavaScript web applications.
    • Developed several system administration scripting applications in Bash, PHP, Perl, and Python.
    Technologies: PHP, Python, C, Bash, Perl, JavaScript
  • Software Architect, Developer
    DINT S.A.
    2011 - 2012
    • Designed and developed an application for a Linux-based device which was controlled via Bluetooth from an Android device (tablet or smartphone) and controlled two video outputs (LED TV and a projector), one audio output, and a lightboard controlled from the device serial port or a different Bluetooth port.
    Technologies: C
  • System Administrator, Developer
    CONICET - Centro Científico/Tecnológico Litoral Centro
    2006 - 2010
    • Wrote many PHP and Bash scripts for custom system administration.
    • Developed an application to control a mass spectrometer and generate graphic representations of the results.
    • Designed and developed an inventory system for the organization of assets.
    Technologies: PHP, Bash, Visual Basic
  • Software Architect, Developer
    Omega S.A.
    2004 - 2005
    • Designed and developed a web-based system to assist with the running of a betting game in a Venezuelan casino in Venezuela, which generated the necessary random entities, calculated the bet awards, and graphed the results of the game.
    • Designed an application protocol for electronic money transfer and accounting.
    • Designed and implemented the server architecture to support several application deployments.
    Technologies: Java, PHP, HTML, JavaScript
  • DevOps @ (Development)

    Cloud infrastructure management based on Rackspace services (Provisioning, Load Balancing, Database replication). Application monitoring and deployment (Ruby, PHP, Git, Capistrano, New Relic).

  • Developer @ EvoBits Information Technology SRL (Development)

    Developed across the full stack:
    * run security audit.
    * implemented security measures.
    * developed template subsystem.
    * developed internal messaging subsystem.
    * developed DDoS mitigation system based on Redis.

  • DevOps @ (Development)

    Designed, implemented, and administrated a high-availability AWS infrastructure.

    * VPC with VPN access.
    * Load Balanced Public Web Layer.
    * Load Balanced Private App Layer.
    * Autoscaling Layers.
    * Multi Availability Zones all Layers.
    * Master Slave Multi AZ RDS.
    * SES service for mail sending.

  • Multi-daemon Watchdog System (Development)

    Designed and developed a multi-daemon based system that monitors resource availability and behavior (internet links and internet services) and automatically make decisions about the routing of data and services. There are multiple instances of an agent daemon and one central daemon which performs decision-making.

  • Multimedia Controller (Development)

    Designed and developed an application to run on a GNU Linux-based device, controlled via Bluetooth protocol with an Android tablet or smartphone. The app controls two video outputs, one audio output and a serial connected lightboard, all concurrently and independently. The app is coded in C and heavily built on top of libVLC library.

  • Languages
    Python, C, Bash, PHP, XML, SQL, JavaScript, Java, C++, HTML
  • Tools
    Git flow, Xdebug, Capistrano, Vagrant, SaltStack
  • Paradigms
    Object-oriented Programming (OOP), DevOps, Procedural programming
  • Platforms
    Amazon Web Services (AWS), Windows, New Relic, Linux, Rackspace Cloud, WordPress, Docker
  • Storage
    MySQL, MongoDB, PostgreSQL, Vertica
  • Other
    System Administration, AJAX
  • Frameworks
    Bootstrap, Django, CodeIgniter, Symfony 2
  • Libraries/APIs
    jQuery, Puppet.js
  • Engineering degree in Computer/Information Systems Engineering
    Universidad Tecnológica Nacional - Santa Fe, Argentina
    2000 - 2006
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