Andrej Adamcik, Developer in Bratislava, Bratislava Region, Slovakia
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Andrej Adamcik

Verified Expert  in Engineering

JavaScript Developer

Bratislava, Bratislava Region, Slovakia
Toptal Member Since
January 27, 2015

Andrej is a software developer and architect. He has extensive experience with PHP, JavaScript, HTML, and CSS and enjoys working on both the front and back end. He likes creating modern websites and developing real-time scalable web applications with Node.js.


JavaScript, TypeScript, Node.js, PostgreSQL, MySQL, Redis, Elasticsearch, Vue...
Flow Studio
Agile, Agile Software Development, Amazon Web Services (AWS), TypeScript...
Rainmaking Innovation ApS (via Toptal)
Amazon Web Services (AWS), Heroku, MongoDB, Node.js, Vue, Web Development...




Preferred Environment

Visual Studio Code (VS Code), MacOS, Git, Ubuntu, Amazon Web Services (AWS)

The most amazing...

...project I've coded is, an online integrated development environment (IDE) in the cloud.

Work Experience


2020 - PRESENT
  • Managed a team of eight back-end and front-end developers.
  • Created an app architecture and cloud infrastructure for various platforms.
  • Developed web apps, mobile apps, APIs, and DevOps processes for fintech, eCommerce, real estate, legal, and other industries.
Technologies: JavaScript, TypeScript, Node.js, PostgreSQL, MySQL, Redis, Elasticsearch, Vue, React, React Native, Amazon Web Services (AWS), Cloud Infrastructure, Agile, Software Development, Software Design


2018 - 2021
Flow Studio
  • Developed various web applications, including CRM systems, CMS systems, eCommerce, social platforms, chat applications, and many others.
  • Created animated website presentations, winning awards.
  • Developed back-end APIs for web applications, working with real-time data, third-party APIs, payment gateways, or big data.
Technologies: Agile, Agile Software Development, Amazon Web Services (AWS), TypeScript, JavaScript

Full-stack Developer for The Hub

2019 - 2020
Rainmaking Innovation ApS (via Toptal)
  • Developed The Hub portal for matching talent with startups.
  • Built +impact portal to match investors with impact startups.
  • Supported API and admin panel development.
Technologies: Amazon Web Services (AWS), Heroku, MongoDB, Node.js, Vue, Web Development, Full-stack, Software Design, Agile, DevOps, CRM APIs, APIs, JavaScript Libraries

PHP Developer

2019 - 2019
NomadicTribe, LLC (via Toptal)
  • Developed an API using Laravel for a travel app.
  • Created the app's web admin console.
Technologies: Vue, Laravel, PHP, Agile, APIs

Full-stack Developer

2018 - 2019
Officeguru A/S (via Toptal)
  • Supported the development of an API and a web app for an office services platform.
  • Created a presentation website for the platform.
  • Developed an iOS and Android app using React Native for the client's employees.
Technologies: React Native, React, Vue, MySQL, Laravel, PHP, Web Development, Full-stack, Agile, APIs, JavaScript Libraries

Full-stack Developer

2018 - 2018
SPARK! (via Toptal)
  • Developed an API for a print quote system using Node.js and MS SQL.
  • Created the UI for a print quote system using Vue.js, Nuxt, and Vuetify.
Technologies: Microsoft SQL Server, Vuetify, Vue, Node.js, JavaScript, Web Development, Full-stack, APIs, JavaScript Libraries


2014 - 2018
  • Created web presentations.
  • Developed a system to generate proposals of web and mobile applications with an algorithm for cost calculation.
  • Developed a tracking and analytics application for employees.
  • Added back-end functionality for an interactive magazine.
  • Developed the website, admin, and APIs for airlines.
  • Created the Glue website for Spotify.
  • Designed an iOS application for Gartner to view and manage research articles.
Technologies: Node.js, Swift, Objective-C, JavaScript, CSS, HTML, Microsoft SQL Server, MariaDB, MySQL, PHP, Web Development, Full-stack, Software Design, Software Architecture, Architecture, Agile, Leadership, DevOps, APIs, JavaScript Libraries

Full-stack Developer

2015 - 2017
Helix Sleep (via Toptal)
  • Created an eCommerce site for custom built mattresses.
  • Developed an admin UI for the eCommerce website.
Technologies: Laravel, Bash, JavaScript, CSS, HTML, MySQL, PHP, Web Development, Full-stack, Software Design, Software Architecture, Architecture, APIs, JavaScript Libraries

PHP/MySQL Developer

2015 - 2016
RAD FitKey (via Toptal)
  • Developed an API for a body measurement app.
Technologies: MySQL, PHP

Software Developer

2012 - 2016
Lime Inspirations, s.r.o.
  • Developed a real-time chat support application (
  • Implemented Jabber functionality for communication between the app and messengers.
Technologies: Python, Bash, JavaScript, CSS, HTML, MySQL, PHP, APIs

PHP Developer for Back-end REST API

2015 - 2015
ZYX Integrated Technologies, LLC (via Toptal)
  • Developed an API for a social monetization platform.
Technologies: MySQL, PHP

Software Developer

2013 - 2014
Omasta Consultancy, Ltd.
  • Developed an online CV generator with editable templates.
  • Created iOS games.
Technologies: Objective-C, JavaScript, CSS, HTML, MySQL, PHP, iOS Games

Software Developer

2006 - 2014
  • Developed an online IDE for developers supporting 40+ languages.
  • Created beautiful and modern web presentations.
Technologies: Objective-C, C, Node.js, JavaScript, CSS, HTML, MariaDB, MySQL, PHP

Web Developer

2012 - 2013
  • Designed web presentations.
  • Developed eShop solutions.
Technologies: MySQL, PHP, JavaScript, CSS, HTML

Viion World Website

Corporate website for Viion World, which designs and builds immersive learning environments, created using Vue.js, Three.js, and GSAP.

BookLocal Landing Page

Landing page for a company that aims to connect hotels and travelers via blockchain smart contracts and get rid of all the middlemen.

A modern IDE in the cloud.

Lime Talk
A real-time chat support application.

Comcast Media 360

Responsive website for Comcast.


An iOS app for companies to manage their open positions and find the best candidates. As a candidate, you can record video with real-time face shape detection and polygons generated from the background.

My Gartner Mobile
Native iOS app in Swift for viewing Gartner articles and library management.


An iOS app done in Swift for Royal Caribbean.

A preview of the app is shown in this video:

Spotify Glue Website

A website for Spotify's design guidelines.


React, Vue, Vuex, Node.js, jQuery UI, jQuery, Socket.IO, CocoaPods, Facebook API


Xcode, Git, Sublime Text, AWS CLI, Amazon Simple Email Service (SES), Amazon EBS, Mercurial


Nette, Laravel, Koa,, Vue SSR, React Native, Ember.js, Vuetify, Zend Framework


Swift 4, CSS, Swift 3, HTML5, Swift, JavaScript, CSS3, PHP, HTML, Less, Bash, Python, C, Objective-C, TypeScript


Object-oriented Programming (OOP), REST, Object-oriented Design (OOD), Agile Software Development, Agile, DevOps


iOS, MacOS, Ubuntu, Linux, Debian Linux, CentOS, AWS Lambda, Visual Studio Code (VS Code), CodeTasty, Heroku, Amazon EC2, Amazon Web Services (AWS)


MongoDB, MySQL, MariaDB, Redis, Amazon S3 (AWS S3), PostgreSQL, Microsoft SQL Server, Elasticsearch


Vue Router, Web Development, Full-stack, Software Design, Software Architecture, Architecture, Leadership, APIs, JavaScript Libraries, CRM APIs, Cloud Infrastructure, Software Development, iOS Games

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