Dusan Simonovic

Belgrade, Serbia

Member since January 17, 2017

Dusan is a back-end Java developer with eight years of experience in Java development. 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.

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Portfolio

Gogo, LLC
Java, Spring Cloud, AWS
MetaSaas (via Toptal)
Java, REST, JWT, OAuth, OAuth 2.0, Elasticsearch, MyBatis
Endava d.o.o.
Java, AngularJS, Dropwizard, REST, Jersey, JDBI, HBase, MySQL, Git, Scrum, Agile

Experience

Java, 8 years
Spring, 8 years
REST, 6 years
Amazon Web Services (AWS), 5 years
Apache Kafka, 4 years
Microservices, 3 years
Dropwizard, 3 years
Docker, 3 years

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)
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)
https://www.toptal.com/java/dropwizard-tutorial-microservices
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
SQL, Java
Frameworks
Spring, JUnit, OAuth2, Dropwizard
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, HBase, Cassandra
Other
Netflix OSS, Networking
Libraries/APIs
Lucene

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