Slobodan Djordjevic, Developer in Belgrade, Serbia
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Slobodan Djordjevic

Verified Expert  in Engineering

Software Developer

Belgrade, Serbia
Toptal Member Since
October 20, 2014

Slobodan has been working as a JavaScript developer for ten years and is very passionate about it and perfecting his web development skills. He loves learning new languages and puts an emphasis on working with the latest technologies and frameworks.


Boink Technologies inc
React, Tailwind CSS, TypeScript, Zustand, Next.js, PubNub...
Node.js, MySQL, MongoDB, Mongoose, TypeScript, RabbitMQ, PostgreSQL...
Belmont Technology Inc
JavaScript, React, Node.js, TypeScript, Styled-components, Redux, Sagas...




Preferred Environment

Node.js, React, TypeScript

The most amazing...

...thing I've developed is a user behavior tracking tool applying machine learning to determine which products and services the user is most interested in.

Work Experience

Senior Front-end Developer

2021 - 2022
Boink Technologies inc
  • Developed the front end for the Slushy social media platform built for professional creators.
  • Worked on mobile-first PWA development using the React and TypeScript stack.
  • Developed a real-time chat and notifications system.
Technologies: React, Tailwind CSS, TypeScript, Zustand, Next.js, PubNub, Progressive Web Applications (PWA), Amazon Web Services (AWS)

Back-end Developer

2020 - 2021
  • Developed software called the Spend Manager that helps people track their expenses by converting the paper receipts into a digital format.
  • Developed an AWS-based serverless infrastructure.
  • Implemented a microservice architecture to support thousands of API requests per second.
Technologies: Node.js, MySQL, MongoDB, Mongoose, TypeScript, RabbitMQ, PostgreSQL, Amazon Web Services (AWS), REST APIs

Senior Full-stack Developer

2019 - 2020
Belmont Technology Inc
  • Built a complex UI using the React/Redux/Redux-saga stack for the software product used to empower geoscience communities involved in oil and gas resources evaluation.
  • Participated in defining the project architecture and development tasks.
  • Developed an MS Word plugin for managing text files.
Technologies: JavaScript, React, Node.js, TypeScript, Styled-components, Redux, Sagas, MUI (formerly Material UI), PostgreSQL, Amazon Web Services (AWS), Full-stack, REST APIs

Senior Full-stack Developer

2018 - 2019
  • Developed a cryptocurrency trading platform and payments infrastructure for crypto.
  • Used Jira for tracking and defining development plans and tasks.
  • Maintained a PHP and MySQL legacy system and participated in the transition to new React and Node.js architecture.
Technologies: JavaScript, React, Node.js, MySQL, TypeScript, PostgreSQL, Amazon Web Services (AWS), Full-stack, REST APIs

Front-end Engineer

2017 - 2018
  • Integrated big data APIs into front-end solutions using modern JavaScript frameworks.
  • Developed a browser plugin user behavior tracking tool.
  • Designed and developed the UI for the advertisement tool by integrating GIS (geographic information system) software solutions.
Technologies: Node.js, Angular, React, JavaScript, Front-end, TypeScript, Amazon Web Services (AWS)

JavaScript Developer

2015 - 2016
  • Participated in the development of a Node.js-based search engine for the car industry.
  • Developed the UI with React for various car industry websites.
  • Set up a NoSQL database.
Technologies: Node.js, React, REST APIs

JavaScript Developer

2014 - 2016
Crealogix Ag E-Banking
  • Developed the user interface used by bank staff and customers.
  • Handled modular JavaScript development of UI components.
  • Customized JavaScript code to support Airlock encryption.
  • Performed Angular front-end development of UI components.
Technologies: Angular, Less, JavaScript, REST APIs

Front-end Developer

2012 - 2014
Razor Communications
  • Developed single-page AngularJS applications.
  • Handled desktop email client QML development for a Python back-end.
  • Developed Facebook apps in HTML and CSS for a PHP back-end.
  • Created reusable HTML/jQuery UI components.
  • Developed JavaScript services for a REST API.
  • Converted PSD designs to HTML/CSS/JavaScript code.
Technologies: AngularJS, jQuery, JavaScript, QML, Sass, Less, CSS, HTML

Delshe Shipping Service
An online application providing shipping services. It is developed using HTML5, LESS, and AngularJS and is optimized for mobile device resolution. It has an AngularJS-based front end and is used for form validation, API service calls, and HTML template rendering.

Razor Presentation Website
A fully responsive WordPress-based website developed using Bootstrap, LESS, and jQuery.

Hiri Email Client
A desktop QML, JavaScript, and Python-based email client application.

JD Power
A car industry search engine built using Node.js and MongoDB on the back-end side and using Backbone.js on the front-end side.

Built the in-house JavaScript framework for The Digital Banking Software, a digital banking platform that allows real-time trading, brokerage, and money transactions.


HTML, HTML5, JavaScript, Sass, CSS3, Less, TypeScript, CSS, PHP, QML


Redux, MUI (formerly Material UI), Next.js, NestJS, Angular, AngularJS, Tailwind CSS


React, Node.js, jQuery, REST APIs, PubNub


Functional Programming, Object-oriented Programming (OOP), Model View Controller (MVC), REST


Progressive Web Applications (PWA), Front-end, Full-stack, Zustand, Styled-components, Sagas, Software Development


Chrome Developer Tools, Git, Adobe Photoshop, Mongoose, RabbitMQ


Amazon Web Services (AWS), Visual Studio Code (VS Code)


MongoDB, PostgreSQL, MySQL

2006 - 2014

Bachelor's Degree in Informatics and Financial Management

University of Belgrade, Faculty of Organizational Sciences - Belgrade, Serbia