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Igor Delac

Igor Delac

Zagreb, Croatia
Member since April 9, 2014
Igor is an enthusiastic and skilled technology professional with experience in Java development, system administration, and more. He loves to experiment and work with new technologies, and has proven ability to learn whatever is necessary to solve a problem at hand.
Igor is now available for hire
Portfolio
Experience
  • Linux, 10 years
  • Bash, 9 years
  • VoIP, 6 years
  • Procedural programming, 5 years
  • Java, 3 years
  • LDAP, 3 years
  • Multicast, 2 years
  • Assembler, 2 years
Zagreb, Croatia
Availability
Part-time
Preferred Environment
Eclipse, NetBeans
The most amazing...
...thing I've coded is a fast response to ldap request with precoded answers.
Employment
  • Java Developer
    2017 - PRESENT
    SedamIT d.o.o.
    • Developed a lawful interception system for monitoring telecom network traffic.
    • Created an RMS system for active VoIP call recording.
    Technologies: Spring, Maven, Eclipse, Git
  • Java Developer
    2013 - 2015
    Ericsson Nikola Tesla
    • Tested and coded a provisional gateway for HLR.
    • Created support for LDAP by implementing openLDAP and custom Java LDAP servers.
    • Built a high-performance LDAP server.
    • Developed support for Linux tools.
    • Optimized the TCP stack on Linux 2.6 and 3.0 kernel series.
    Technologies: Java, Eclipse, Git, Linux
  • Software Tester
    2011 - 2012
    Ericsson San Jose
    • Installed the Entrisphere/Ericsson BLM1500 multiplexer.
    • Tested BLM1500 data, video, and voice services for the Spirent Test Center.
    • Installed and supported Asterisk PBX for testing VoIP.
    • Configured extreme L3 Switches.
    • Troubleshot networks.
    • Tested GPON access to the network with ONT terminal provisioning.
    Technologies: GPON Broadband Access
  • Integration and Verification Engineer
    2008 - 2011
    Ericsson Nikola Tesla
    • Conducted support for test tools.
    • Tested Linux-based elements of Telephony Softswitch Solution 4.0.
    • Troubleshot and diagnosed network problems.
    • Conducted SIP protocol analysis.
    • Integrated site system testing via installation and configuration of TGC/MGW elements.
    Technologies: Telephony Switches
  • Network Administrator
    2007 - 2007
    Siemens PSE
    • Supported the introduction of multicast in the company network.
    • Created documentation for the network.
    • Diagrammed network connections.
    • Tested multicast on Cisco switches.
    • Tested multicast across routers.
    • Created final documentation and reported on test results.
    Technologies: Cisco
Experience
  • SIP Load Balancer (Development)
    https://code.google.com/p/lb-sip/

    A simple Java application which will do load balancing across several sip servers, based on list, or periodic reports from sip servers.

  • Blagajna (Development)
    https://code.google.com/p/blagajna1/

    A simple Java GUI application for issuing printed receipts on cashier systems, completed according to Croatian legislative requirements.

  • Simple Management System (Development)
    http://git.toptal.com/Igor-Delac/igor-delac-2nd-attempt/wikis/home

    A simple management front-end application coded in Java FX, to demonstrate REST approach and FX user interfaces. Back-end PHP and SQL scripts are also provided for integration into Apache web servers with a PHP module and MySQL database.

  • Implementing a Remote Framebuffer Server in Java (Publication)
    Connecting to remote computers and working on them through terminals over a network is something we often take for granted. Technologies that enable us to do this have changed the way we work and have opened doors to amazing possibilities. Although the inner workings of these technologies may seem like obscure knowledge, implementations of many of these technologies are surprisingly straightforward. In this article, Toptal engineer Igor Delac gives us a step-by-step tutorial on how to implement the Remote Framebuffer server-side protocol in Java, allowing Swing-based applications to run and be interacted with remotely using standard VNC clients.
Skills
  • Paradigms
    Procedural programming, Event-driven Programming
  • Platforms
    Linux, UnboundID
  • Languages
    Java, Bash, Assembler, SQL
  • Tools
    Eclipse IDE
  • Other
    LDAP, Multicast, VoIP
  • Frameworks
    Spring 5
  • Libraries/APIs
    Apache HttpClient
  • Storage
    MySQL
Education
  • Master's degree in Electrical and Software Engineering
    2002 - 2008
    J. J. Strossmayer University - Osijek
Certifications
  • CCNA
    APRIL 2012 - PRESENT
    Cisco
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