Robert Darasz, Developer in Poznań, Poland
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Robert Darasz

Verified Expert  in Engineering

Front-end Developer

Poznań, Poland

Toptal member since August 28, 2018

Expertise
CSSjQueryJavaScriptBootstrapReduxReact.jsAgile DevelopmentFront-endA/B TestingGitNode.js
Bio

Working as a front-end developer for a number of years now, Robert has had the opportunity to work his way up from small- to large-sized companies, where he's been responsible for the successful delivery of their products. Robert likes to think of himself as a developer whose key strengths are good communication skills and the ability to pick up projects and new skills on the fly.

Portfolio

OLX Group | NaspersClassifieds
Scrum, Redux, React, UI Development, Responsive UI, JavaScript, CSS, jQuery...
Sii
Scrum, Redux, React, UI Development, Responsive UI, JavaScript, CSS, jQuery, PHP
Roboticket
Scrum, Redux, React, UI Development, Responsive UI, JavaScript, jQuery, ASP.NET...

Experience

  • HTML - 9 years
  • CSS - 8 years
  • Front-end - 8 years
  • jQuery - 6 years
  • JavaScript - 6 years
  • Bootstrap - 5 years
  • React - 4 years
  • Redux - 4 years

Availability

Part-time

Preferred Environment

Jira, MacOS, GitLab

The most amazing...

...project I've had the opportunity to work on is a progressive mobile web app made from scratch in React for OLX, being used by millions of daily active users.

Work Experience

Front-end Developer

2017 - PRESENT
OLX Group | NaspersClassifieds
  • Mainly worked on rebranding the OLX Europe Desktop and PWA mobile app in 2020.
  • Developed internal tools in React (e.g., category manager, category keywords visualizer, internal landing page generation tool, mass push notification management center).
  • Participated in the creation of the mobile OLX PWA app.
  • Implemented new features on the main platform.
  • Created and maintained the landing pages.
  • Trained the front-end development interns.
  • Provided front-end support for any local demands which included localized features for specific countries, like delivery, invoicing, and so on.
Technologies: Scrum, Redux, React, UI Development, Responsive UI, JavaScript, CSS, jQuery, Front-end

Front-end Developer

2017 - 2018
Sii
  • Was hired via Sii (one of Europe's biggest outsourcing companies) as a contractor to work on a project in OLX Group. The project involved writing a new progressive web app (PWA) in React for the OLX platform mobile users.
  • Improved and further developed the user-tracking system.
  • Supported business intelligence (BI) with advertisement campaigns and with the use of GTM and DFP.
  • Helped to improve the UX through implementing A/B experiments.
  • Developed and maintained transactional mailing templates with the use of Twig and plain HTML/CSS.
Technologies: Scrum, Redux, React, UI Development, Responsive UI, JavaScript, CSS, jQuery, PHP

Front-end Developer | UI/UX Designer

2015 - 2017
Roboticket
  • Completely rewrote and redesigned the entire front-end layer of several applications.
  • Worked on an internal tool for a React-based app for system performance and ticket sales reporting.
  • Wrote a drag-n-drop plugin which allowed system users to define how the home page looks like and which item it contains.
  • Developed new features on the platform.
  • Contributed to a complete rebuild of the user transaction path, rewriting the whole core front-end layer and its behavior using JavaScript and many Ajax calls.
Technologies: Scrum, Redux, React, UI Development, Responsive UI, JavaScript, jQuery, ASP.NET, C#

Creative Graphic Designer

2014 - 2015
Nova Group
  • Designed projects mostly for print.
  • Created 3D objects and interior visualizations.
  • Provided front-end support for a few completed web campaigns.
Technologies: Responsive UI, JavaScript, jQuery, Desktop Publishing (DTP), 2D, 3D

Front-end Developer | UI Designer

2013 - 2014
MobiAR
  • Developed countless websites for smaller companies, mostly in Joomla and WordPress.
  • Designed and/or delivered the front-end side of larger projects developed in Java and PHP.
  • Created interactive infographic websites using JavaScript and CSS.
  • Designed mobile apps and web pages and larger web applications such as a complete HR management tool, invoicing product, and a few startup ideas.
Technologies: UI Development, Responsive UI, JavaScript, jQuery, WordPress, Joomla, PHP

Experience

OLX

https://olx.pl
OLX is one of the most successful eCommerce products in Naspers' entire portfolio; basically Europe's equivalent to Craigslist. As a front-end developer in OLX Group Poland, my team and I were responsible for most of the core features of the platform. Besides Poland, we maintained seven other OLX instances based in other European countries.

The Polish OLX generates slightly over 5 billion page views per month, around 10 million unique users, and 15 million active listings (data from July 2018).

TopCrew (via Toptal)

This project involved coding a fully responsive landing page with some scroll animations and a form for gathering information about potential investors.

Roboticket

This ticketing product works in over 20+ instances including most of the Danish and Polish Football league. The platform has been successfully operating at stadiums and events with the capacity up to 80,000 seats.

Roboticket

http://bilety.lechpoznan.pl
This is one of the projects that are based in my hometown. This is the company's first client and it all started from here, now the product is able to process a few hundred ticket transactions per minute.

Education

2013 - 2016

Bachelor's Degree in Visual Arts

Collegium Da Vinci - Poznań, Poland

Skills

Libraries/APIs

jQuery, React, Lodash, Node.js

Tools

Adobe Photoshop, Adobe Illustrator, Maxon Cinema 4D, GitLab, Jira, Webpack, Gulp, Git

Languages

SCSS, HTML, CSS, JavaScript, C#, PHP

Frameworks

Jest, Bootstrap, Redux, ASP.NET

Paradigms

Agile, Kanban, Scrum, Unit Testing, Object-oriented Programming (OOP), Functional Programming

Platforms

MacOS, Joomla, WordPress

Other

Styled-components, UI Development, Responsive UI, 3D, 2D, Desktop Publishing (DTP), Front-end, A/B Testing, Tracking, Google Material Design, WebSockets

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