Dejan Sakelšak available

Dejan Sakelšak

Senior software engineer

Profileimage by Dejan Sakelak Senior software engineer from Portoro
  • 6320 Portorož Freelancer in
  • Graduation: BSc. Computer science
  • Hourly-/Daily rates:
  • Languages: German (Elementary) | English (Full Professional) | Italian (Full Professional) | Slovenian (Native or Bilingual)
  • Last update: 16.08.2021
Profileimage by Dejan Sakelak Senior software engineer from Portoro
CV - Dejan Sakelšak

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  • Java, Spring Framework, Spring Boot, J2EE, WebSphere,Tomcat
  • Node.js
  • Scala
  • Erlang
  • C
  • Python
  • PostgreSQL, MySQL, DB2, ...
  • DevOps, Linux, Docker, Kubernetes
  • AWS, GCP, OpenStack
  • 07/2019 - 09/2020

    • DigicS d.o.o.
    • < 10 employees
    • Internet and Information Technology
  • Senior software engineer & CEO
  • Business development, software engineering

  • 09/2019 - 08/2020

    • Invisible Lab Inc
  • Senior software engineer
  • Development of a digital asset custodi product with Java and Spring technologies.

  • 03/2019 - 01/2020

    • Engagio Inc.
  • Senior Layer platform engineer
  • Maintenance, support and development of the Layer platform.

  • 09/2013 - 09/2019

    • LibLab, Dejan Sakelšak s.p.
  • computer engineer and consultant
  • Computer services and consulting - software development, computer engineering and
    consulting. Working alone or in teams using Scrum, TDD, BDD and other agile

    * Software and solution architecture
    * Java development with Spring framework and JEE
    * Multimedia applications, media streaming solutios and communication systems
    * Telecommunication technologies and protocols
    * System integrations
    Skills: Scala, Java, Spring Framework, Distributed systems, Big Data, JEE, EJB, Erlang,
    Docker , Junit,, MySQL, PostgreSQL, C/C++, Qt, Gstreamer, Linux, Embedded systems,
    Raspberry Pi, RTP, RTSP, SIP, Flash streaming, C#, .NET MVC, Nunit, SpecFlow, ...

  • 04/2016 - 03/2019

    • Layer Inc. (Consulting over LibLab, Dejan Sakelšak s.p.)
  • Platform engineer
  • Development, scaling and maintenance of the Layer conversational commerce platform
    with Scala, Erlang/OTP and other technologies.

    * Scala and Erlang microservices

    * Distributed systems and processing

    * Big data

    Skills: Scala, Akka, Erlang/OTP, Docker, Distributed systems and BigData, PostgreSQL,
    Cassandra, RabbitMQ, Java, Python scripting, Google compute engine, Azure

  • 10/2018 - 02/2019

  • Scala backend engineer
  • Development and maintenance of the product backend written in Scala.
    Skills: Scala, PostgreSQL, Akka streams, GraphQL, node.js, Typescript

  • 03/2011 - 11/2014

    • Sportradar AG (Slovenian subsidiary Klika d.o.o.)
  • Senior software engineer
  • Senior software engineer of enterprise Java solutions for insurance, banking and sports
    betting industries. Technical lead of a software development team using agile and test
    driven methodologies derived from Scrum.

    * Java software architecture
    * IBM WebSphere Portal software development with Spring MVC and JEE
    * Distributed systems and data processing architectures
    * Python development
    * Mentoring Junior developers and Interns
    Skills: IBM WebSphere Portal, Java, JEE, DB2, IBM Tivoli Directory Server, Junit,
    Tomcat, Spring framework, JGroups, Infinispan, Apache, MySQL, PostgreSQL, NGINX,
    Varnish, Puppet, Networking, Zabbix, ...

  • 12/2010 - 06/2013

    • ltd. (Slovenian subsidiary d.o.o.)
  • system administrator
  • Linux system administration, deployment and maintanance.

    Skills: MongoDB, ElasticSearch, NGINX, Play! Framework, VPN technologies, ...

  • 11/2006 - 02/2011

    • Marand Inženiring d.o.o.
  • Software engineer
  • Software development, system architecture, new technologies introduction and
    prototyping. Telecommunications, new media and media convergence. Voice and video
    communication systems

    * Software architecture
    * Team leadership
    * Enterprise Java development with Spring framework and other technologies
    * Multimedia applications and media streaming solutios in C
    * Different projects from the following areas: Online casinos, Pharmaceutical ERP,
    Slovenian tax office ( specification of slovenian VAT validation system),
    panoramic cameras, IoT, cryptocurrency mining, ...
    * Telecommunication technologies and protocols
    * DevOPS, System administration
    Skills: Java, JEE, EJB, Spring Framework, Gstreamer, C/C++, Linux, RTP, RTSP, SIP,
    Flash streaming, System security, System monitoring, C#/.NET, SNMP, ASN.1, ...

Available for travel for shorter periods.