Aleksandar Vucic, Developer in Belgrade, Serbia
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Aleksandar Vucic

Verified Expert  in Engineering

Software Developer

Belgrade, Serbia
Toptal Member Since
April 3, 2014

Aleksandar is a top IT (full-stack) developer with 7+ years of experience in various IT technologies. He has developed applications, API services, games, and more. He is a great team player with a strong understanding of business, UI, and all phases of development.



Preferred Environment

Linux, OS X, Git, Vim Text Editor

The most amazing...

...project I've built is a secure virtual data rooms platform for the exchange of highly sensitive documentation.

Work Experience

Senior Back-end Developer

2020 - 2021
Disapatch Health
  • Worked on developing and connecting a new application for the new patient onboarding process with the existing system.
  • Worked on improving patient data entry by major healthcare systems through the AWS platform.
  • Worked on integration of the Redox healthcare system with the existing Dispatch Health platform.
  • Worked on upgrading the existing patient onboarding process system through the existing platform.
Technologies: Ruby on Rails (RoR)

Senior Ruby Developer

2019 - 2019
  • Integrated SSO/OpenID Connect with Onelogin Service.
  • Integrated SMS and voice calls with Twilio cloud communications platform.
  • Wrote unit tests for existing code.
  • Refactored existing Ruby code.
  • Made some UI changes.
Technologies: REST, Ruby on Rails (RoR), Ruby

Product Owner/Software Developer

2016 - 2017
  • Worked on a custom SaaS/B2B platform based on Ruby, Rails, and Android technologies.
  • Helped integrate GraphqQL API.
  • Work on a C++ symbol recognition library for Android based on OpenCV framework.
  • Helped develop a reactive SPA using StimulusJS/Stimulus Reflex libraries with WebSocket page rendering.
  • Worked on an Android application with Ruby (Rails) server-side API integration.
Technologies: C++, Android, Ruby on Rails (RoR), Ruby

Senior Web Developer

2015 - 2016
  • Built a RESTful API.
  • Created a single-page application in AngularJS.
  • Handled both back-end and front-end development.
  • Integrated external services.
Technologies: REST, AngularJS, Ruby on Rails (RoR), Ruby

Senior Software Developer

2014 - 2015
  • Refactored Mastered platform's front end. Developed a new front-end user experience based on the Foundation CSS framework.
  • Refactored Mastered platform's back end by refactoring the data model.
  • Developed a new user experience. Implemented a new design with responsive features.
  • Improved the deployment procedure.
  • Improved existing tests. Developed new features using TDD.
Technologies: Test-driven Development (TDD), AngularJS, CSS3, HTML5, Ruby on Rails (RoR)

Senior Software Developer

2012 - 2014
InterVenture GmbH – DRS
  • Refactored parts of the old virtual data rooms platform.
  • Contributed to the back-end development and architecture of the new platform.
  • Developed a SOA system for high-speed data exchange using technologies like Ruby, Grape, PostgreSQL, Redis, Elasticsearch, and RabbitMQ.
  • Developed a CAS (LDAP) server.
  • Developed various libraries for authorization, multi-factor authentication, Excel file conversion, etc.
  • Developed a public API and single-page application using AngularJS, among other technologies.
  • Developed other applications in a DRS ecosystem like Teaser, Shop, and Admin.
  • Reviewed code.
  • Interviewed and tested new candidates.
  • Re-engineered business processes.
Technologies: Test-driven Development (TDD), AngularJS, AMQP, RabbitMQ, PostgreSQL, Redis, Elasticsearch, GrapesJS, Ruby on Rails (RoR), Ruby

Senior Ruby on Rails Developer

2010 - 2012
  • Designed and architected a social network platform.
  • Developed the platform using Ruby on Rails, Flash AS3 (P2P communication), PostgreSQL, and Elasticsearch.
  • Developed the public API.
  • Coordinated with a small team of five people, including myself.
  • Handled front-end development using JavaScript, jQuery, and Backbone.
Technologies: jQuery, Backbone.js, HTML5, Elasticsearch, Node.js, Redis, PostgreSQL, Ruby on Rails (RoR)

Ruby on Rails, Flash, and Front-end Developer

2010 - 2010
Razor d.o.o
  • Improved and refactored the system back-end functionality for Meteor (
  • Improved and refactored the CMS system (Rubylith) for Meteor (
  • Integrated with the D3 checkout system based on D3 API using Meteor (
  • Developed modules and widgets for cross system sharing and reusing.
  • Created jQuery plugins.
  • Worked on a solution for the data model for the new system using the Meteor Bundle System/Refer a Friend system.
  • Maintained the Treasury Holdings website.
  • Created an iPhone application in Objective-C: Goshido.
Technologies: Objective-C, Facebook API, Meteor, JavaScript, HTML, AS3, Ruby on Rails (RoR)

Web Developer

2009 - 2010
Limores (Ground Link)
  • Developed the front end for the Java/Struts application.
  • Developed various plugins/widgets for geolocation interaction using Google Maps, custom UI/UX, sliders, etc.
  • Developed and implemented email/front-end templates.
  • Developed and integrated UI/UX work with the Java back-end system.
  • Supported the back-end team for UI/UX tasks and integration.
Technologies: jQuery, JavaScript, CSS, HTML

Flash Game Developer, Animator

2008 - 2009
IQS+ Studio
  • Developed interactive Flash games for the US market.
  • Developed interactive Flash banners for “Click” campaigns.
  • Developed Flash projects based on timeline/coded animations with various effects.
  • Animated illustration/cartoon characters based on story boards.
  • Provided back-end support for the Games/AS3 project using PHP/MySQL.
Technologies: MySQL, PHP, AS3, AS2

Founder, Partner, Web Developer

2006 - 2008
Dandelion d.o.o
  • Developed the corporate website for Pupin Telecom Dipotel and integrated it with Alcatel (Lucent) public/private API using PHP/MySQL.
  • Developed a fashion website gallery system.
  • Developed various interactive applications, presentations for photo sessions, and fashion shows.
  • Created print, design, and other marketing activities.
Technologies: AS3, MySQL, PHP

Ordering pizza platform with SMS and voice cloud communication.


My own startup for an interesting SaaS/B2B platform using Ruby, Rails, and Android technologies.

DRS - Virtual Data Rooms platform

Special software in secure virtual data rooms for the exchange of highly sensitive documentation.

HRS - Social Network

Social network for internal business communication with all of the now standard elements like friendship/network system, mailbox system, analytics, reports, and documents generation plus other functionality. The system is completely based on “Push” technology with live notifications, multichannel chat system, etc.

ScuddleMe - Social Network

Involved in development as core Ruby developer and consultant.

Meteor System

Improved and refactored system back-end functionality for various parts of the system. Integrated with externals APIs and D3 checkout system. Developed the modules and widgets for cross system sharing and reusing.

Jägermeister - "Break Ice" Flash Game

Flash game (AS3) with Facebook integration for their New Year Promo campaign.

Sekopak - Brick Game

Interactive brick game with levels and sound effects for a custom campaign.

A platform for managing online courses and student collaboration.


Platform for sharing content built on Node.js/Vue.js technologies.
2010 - 2015

Bachelor's Degree in Computer (IT) Management

Union University - Belgrade, Serbia


jQuery, Devise, AMQP, AngularUI, Vue 2, Node.js, Backbone.js, Facebook API


RSpec, Cucumber, Adobe Photoshop, Flash, RabbitMQ, Vim Text Editor, Git


Capybara, Ruby on Rails (RoR), GrapesJS, Sinatra, Bootstrap 3, Stimulus, Phoenix, AngularJS


HTML5, Ruby, HTML, CSS, SQL, CSS3, AS3, JavaScript, Elixir, Objective-C, PHP, AS2, C++, C, GraphQL


Model View Controller (MVC), REST, Test-driven Development (TDD), Agile Software Development, Object-oriented Programming (OOP), Behavior-driven Development (BDD), Functional Programming


Memcached, Redis, PostgreSQL, Elasticsearch, MySQL, MongoDB


WordPress, Meteor, OS X, Linux, Android


Game Development, Adobe Flash Builder

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