Slobodan Gajic, Software Developer in Sremska Mitrovica, Vojvodina, Serbia
Slobodan Gajic

Software Developer in Sremska Mitrovica, Vojvodina, Serbia

Member since July 18, 2017
Slobodan is a front-end developer with a Bachelor's degree in computer engineering and six years of software development experience. He is experienced in front-end technologies such as HTML5, CSS3, and JavaScript. Slobodan has also developed and maintained various JavaScript applications and has exceptional knowledge of Angular and React.
Slobodan is now available for hire




Sremska Mitrovica, Vojvodina, Serbia



Preferred Environment

MacOS, Windows, VSC

The most amazing...

...thing I worked on is the React Native app for smart goggles. It connects to goggles with BLE, adjusts screen position, brightness, and it pulls swim data.


  • Front-end Developer

    2019 - 2020
    Bright & Shiny
    • Worked on different projects for this company as a front-end developer using technologies like Angular 7 (and all technologies which follow this framework).
    • Developed mobile apps for both IOS and Android using React-Native.
    Technologies: HTML5, CSS3, Sass, Bootstrap, JavaScript, JSON, jQuery, Typescript, Angular 2+, Git, React-Native
  • [Toptal Projects] UI Developer

    2018 - 2019
    Queen Rania Foundation (via Toptal)
    • Updated the existing learning platform with new designs that were delivered from their designer. The platform was built using React framework and Django.
    Technologies: HTML5, CSS3, Sass, JavaScript, React, Git, Django
  • Front-end Developer

    2018 - 2018
    Cloud Mastery (via Toptal)
    • Maintained existing Lightning components, adding some new features and new Lightning components with Tableau.
    Technologies: HTML5, CSS3, JavaScript, Salesforce, Lightning, Tableau
  • Front-end Developer

    2017 - 2018
    Juno Digital pte LTD (via Toptal)
    • Added new functionalities to a lottery Angular application using RESTful API.
    • Refactored code.
    • Maintained code.
    Technologies: HTML5, CSS3, Sass, Bootstrap, JavaScript, JSON, jQuery, Typescript, Angular 2
  • Front-end Developer

    2016 - 2018
    Esportsconstruct GmbH
    • Developed numerous designs for the E-Sports industry.
    • Optimized designs for mobile devices.
    • Implemented dynamic data using our existing API and JavaScript frameworks.
    • Created a betting system for E-Sport matches, and displayed stats for players, tournaments, games, and more.
    Technologies: HTML5, CSS3, Sass, Bootstrap, JavaScript, Json, jQuery, Typescript, Angular 2
  • Front-end Developer

    2016 - 2017
    • Worked on an interesting AngularJS project, developing new pages from designs, connecting to REST API and creating requested functionalities.
    Technologies: AngularJS, SCSS, HTML5, CSS3, REST API, Bootstrap
  • Front-end developer

    2015 - 2016
    Evoninja ltd
    • Contributed to final touches of Magento theme design and working alongside back-end developers for integration.
    • Developed designs from their designer and created interesting CSS3 and JavaScript animations as this site was full of interaction.
    • Created system for finding FIFA players on game market and buying them.
    Technologies: HTML5, CSS3, Sass, Bootstrap, JavaScript, jQuery, Magento
  • Self Employed

    2013 - 2015
    • Developed a number of front-end projects for international clients.
    • Managed projects, deadlines, working with payments, meetings, project requirements, and client relationships.
    Technologies: HTML5, CSS3, Sass, Bootstrap, JavaScript, jQuery, AngularJS


  • 188bet (Development)

    Esports betting site with number of interesting features like tournament brackets, player and team spotlights, and complete betting feature with a different set of combos, bet history, etc.

  • GGWP (Development)

    This is a project completed for a Swiss company consisting of a gaming site with a number of interesting functionalities. The site is responsive and mobile optimized with Bootstrap. There are a number of modules, carousels, and interactive components making full use of the framework. The calendar at the bottom is custom built by myself.

    The attached link is static since the website is not yet released.

  • Vilas Rab (Development)

    This is a very nice site for presenting Croatia tourism and finding a place to stay while on vacation or holiday. My contribution was programming the functionality of the sliders, responsiveness, and coding the HTML.

  • Dom Bistricak (Development)

    Simple, yet effective custom site to show the client’s capabilities. I built the responsive site from scratch including the slider.

  • Plutosint (Development)

    A very clean, simple, and nice looking design. The client requested a responsive design with sliders and no frameworks. Developed with front-end technologies, the design was used only for presentation.

  • Stepenice and Enterijeri (Development)

    I developed the HTML, CSS, and JavaScript and was also involved in consulting the client on the site’s look and functionality. Although the design is pretty simple and straight forward, there are a number of plugins and custom made snippets used.

  • Blue Nautica (Development)

    Very nice blue sea website. My contribution was front-end including HTML, CSS, and JavaScript. The site is responsive with carousels and modals with information custom built with JavaScript.

  • Exploring SMACSS: Scalable and Modular Architecture for CSS (Publication)
    CSS is notorious for getting messy quickly as a website scales. While frameworks like Bootstrap can help, SMACSS takes a different approach, as a set of solid organizational guidelines. In this article, Toptal Freelance Front-end Developer Slobodan Gajic gives us a run-down of the idea and benefits behind Jonathan Snook's architectural wisdom.


  • Languages

    CSS, Sass, JavaScript, TypeScript, HTML5, CSS3, HTML, CSS5
  • Frameworks

    Angular, Bootstrap 3+, Jasmine, Bootstrap, React Native
  • Libraries/APIs

    jQuery, Pure CSS, React
  • Tools

    Git, NPM, GitHub, Atom, Angular CLI, Photoshop CS5, Karma, Figma
  • Other

    PSD Slicing, PSD to HTML, UI Components, APIs, Front-end, Front-end Development, User Expe, User Experience (UX), User Interface (UI), Optimization
  • Platforms

    Firebase, XAMPP
  • Storage

  • Industry Expertise

    Web Design


  • Bachelor's degree in Computer Engineering
    2013 - 2016
    Business & Computer Engineering - Sirmium - Sremska Mitrovica, Serbia

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