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Dusan Simonovic

Dusan Simonovic

Belgrade, Serbia
Member since January 17, 2017
Dusan is a full-stack developer with eight years of experience in Java and two and a half years of React/Redux experience. He's been working on a number of large projects, including Price2Spy, a tool for data web scraping for tracking competitor pricing on online shops, a social marketing tool for Adobe Marketing Cloud, an in-flight connectivity tool for a leading airline connectivity provider and API integrations for a Saas analytics provider.
Dusan is now available for hire
Portfolio
Experience
  • Spring, 8 years
  • Java, 8 years
  • REST, 6 years
  • Amazon Web Services (AWS), 5 years
  • Dropwizard, 3 years
  • Redux, 2 years
  • Node.js, 2 years
  • React, 2 years
Belgrade, Serbia
Availability
Part-time
Preferred Environment
MacOS/Ubuntu/Windows, IntelliJ, Git, Gradle/Maven
The most amazing...
...project I’ve worked on is a huge social network marketing platform for Adobe Marketing Cloud.
Employment
  • Senior Full-stack Java Developer
    2017 - PRESENT
    Gogo, LLC
    • Led the development of a back-end tool used by airlines to track usage of the GogoAir in-flight entertainment system in real time.
    • Developed microservices (Spring REST services – Spring Cloud, Netflix OSS, AWS).
    • Built a deployment process (Netflix OSS, AWS, Spring Cloud).
    • Refactored some of the legacy code and migrated data from a datacenter to the cloud.
    • Enhanced security in an existing system.
    • Developed the UI (React.js/Redux).
    Technologies: Java, Spring Cloud, AWS
  • Senior Java Developer
    2017 - 2018
    MetaSaas (via Toptal)
    • Worked on integrations with various SaaS vendors using mostly REST.
    • Reviewed code and handled approvals for other developers.
    • Mentored and helped new developers start with integrations.
    • Developed an expenses matching mechanism using Expensify API and Elasticsearch.
    • Helped create integration testing for new integrations.
    Technologies: Java, REST, JWT, OAuth, OAuth 2.0, Elasticsearch, MyBatis
  • Senior Java Engineer/Scrum Master on Adobe Social project
    2015 - 2017
    Endava d.o.o.
    • Led the remote element of a technical team.
    • Developed core services for Adobe social media marketing platform.
    • Built a link shortening service to be used across the platform.
    • Created a label management service for managing content tags/labels.
    • Developed an asset service to store user assets to Amazon S3.
    • Presented at "Pass it on" sessions to help other members of the company to gain knowledge.
    • Involved in UI development based on React.js and Redux.
    Technologies: Java, AngularJS, Dropwizard, REST, Jersey, JDBI, HBase, MySQL, Git, Scrum, Agile
  • Web Developer, System Administrator
    2010 - 2015
    Webcentric d.o.o.
    • Contributed to the development of a tool for monitoring competitor prices on online shops.
    • Handled the deployment lifecycle of the application.
    • Maintained all application environments from development to production.
    • Architected a huge MariaDB Galera cluster.
    • Mentored juniors and worked on developing them as professionals.
    • Set up and maintained a CI environment.
    • Developed full-stack features (Java back-end, HTML/CSS/JS on UI).
    Technologies: Java, MyBatis, JPPF, MariaDB, Spring framework, SVN
Experience
  • Price2Spy (Development)
    http://www.price2spy.com

    A tool used by web shop owners to monitor their competitors. By using this tool, they get notified about all the changes that happen on their competitor's shops, so they can react accordingly with price or any other adjustments.

  • Adobe Social - Core Services (Development)
    https://www.youtube.com/watch?v=eIoGqPqKAv8

    This tool is a huge set of modules that helps enterprise clients set up and maintain their social media marketing campaigns. This project was developed for a world leading IT company, and clients are some of the world's top companies.

  • Cisco Certified Network Associate (Other amazing things)

    Cisco official certification program (CCNA).

  • MetaSaas Platform (Development)
    https://www.metasaas.com/

    MetaSaas is the best SaaS management tool for medium and large businesses. Manage SaaS vendors, reduce SaaS spend, and manage cloud applications from a single and easy to use dashboard.

    As part of the MetaSaas team, my role was to develop more complicated integrations to SaaS vendors and to do code reviews and quality checks for other developers. This involved using REST, OAuth, JWT, and more.

  • Gogo, Ltd. (Development)
    https://www.gogoair.com/

    Gogo is a leading in-flight connectivity and entertainment provider. As a member of development team in Belgrade, I was involved in back-end and front-end development of the cloud solution for Airlines to track usage of the system in airplanes. This involved back-end development (Spring cloud, Netflix OSS) and UI (React.js and Redux).

  • Get Started With Microservices: A Dropwizard Tutorial (Publication)
    Dropwizard allows developers to quickly bootstrap their projects and package applications as easily deployable standalone services. It also happens to be relatively simple to use and implement. In this tutorial, Toptal Freelance Software Engineer Dusan Simonovic will introduce you to Dropwizard and demonstrate how you can use this powerful framework to create RESTful web services with ease.
Skills
  • Languages
    ECMAScript (ES6), Java, Core Java (J2EE), JavaScript
  • Frameworks
    Bootstrap, Redux, Spring, JUnit, OAuth2, Dropwizard
  • Libraries/APIs
    React, Node.js, React Redux, Lucene
  • Tools
    RabbitMQ, Solr
  • Paradigms
    Scrum, Test-driven Development (TDD), Back-end Architecture, Reactive Programming, Microservices, Continuous Delivery (CD), Continuous Integration (CI), REST
  • Platforms
    Amazon Web Services (AWS), Apache Kafka, Docker
  • Storage
    Elasticsearch, H2, Microsoft SQL Server, DynamoDB, MongoDB, MariaDB, MySQL, Redis, Cassandra, HBase
  • Other
    Netflix OSS, Networking
Education
  • Cisco Certified Network Associate in Computer Networking
    2009 - 2009
    Cisco Net Academy - FTN Rao, Novi Sad Serbia
  • Master's degree in Microcomputer Electronics
    2000 - 2006
    Faculty of Technical Sciences - Novi Sad
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