Olga Giza, Front-end Developer in Kraków, Poland
Olga Giza

Front-end Developer in Kraków, Poland

Member since May 21, 2020
Olga is an enthusiastic front-end developer with seven years of experience. She created a web extension for enterprise customers that was compatible with Chrome, Firefox, and Edge. She is skilled in testing web applications, building strong infrastructure and eCommerce functionalities, migrating old monolith stores into micro front-end applications, and integrating enterprise-level systems. Olga loves working with clients to create amazing software.
Olga is now available for hire


  • Codete
    JavaScript, TypeScript, React, Ext JS, Backbone.js, jQuery, AWS, Docker
  • Start-up
    React Native, AWS, Node.js
  • Virtua
    JavaScript, Ext JS, AngularJS



Kraków, Poland



Preferred Environment


The most amazing...

...project I helped deliver was the rewriting of old eCommerce code into a scalable micro front-end that completely revitalized the project.


  • Front-end Developer

    2015 - PRESENT
    • Redesigned and rewrote an old project into micro front ends based on the newest technologies.
    • Designed and implemented from scratch a browser web extension for Chrome Firefox and Edge.
    • Maintained and upgraded a knowledge management system into the latest Ext JS framework version.
    • Interviewed front-end engineers as a technical recruiter.
    Technologies: JavaScript, TypeScript, React, Ext JS, Backbone.js, jQuery, AWS, Docker
  • Freelancer Front-end Developer

    2019 - 2020
    • Developed a mobile app that lets drivers reduce their trip costs by picking up packages from other people and delivering them to the destination point.
    • Collaborated with UX and back-end engineers to prepare a satisfying product for customers.
    • Participated in the project's weekly demonstrations to gather client feedback.
    Technologies: React Native, AWS, Node.js
  • Front-end Developer

    2014 - 2015
    • Developed an application for selling off-rental vehicles to dealers.
    • Tracked and fixed bugs using Redmine as a reporting tool.
    • Assisted with the company portfolio, creating apps in various technologies.
    • Maintained the front end side of eCommerce applications written in Magento.
    Technologies: JavaScript, Ext JS, AngularJS


  • European Furniture eCommerce

    Initially, as a member of the platform team, I prepared the project infrastructure that would be ready to migrate step-by-step the old monolith store into micro front-end apps. When the infrastructure was done, I migrated the project page by page and was responsible for scaling the application in increased traffic, such as during summer sales. For one week each month, I was on call. I responded within ten minutes on every OpsGenie alert, investigated the problem, and discussed it with other affected teams as needed. I decided whether the fix needed immediate action or if a follow-up ticket could be created.

  • Web Extension for Knowledge Management System

    A web extension that can be integrated with any website (such as a customer service software). It was created for enterprise customers and was compatible with Chrome, Firefox, and Edge. As a front-end developer, I was responsible for collecting the requirements, planning the project, choosing technologies, and implementing all features. The biggest challenge in the project was to create a polyfill layer covering all the differences between browsers' APIs. If the extension was enabled for a page, keywords were searched and returned all articles with solutions from the knowledge system API.

  • Packages Delivery App

    An application that lets the user search for a driver that can deliver the package or help with moving. As a front-end developer, I created the entire application from scratch according to designs provided by the UX designer and applying all changes requested by the client.

  • Knowledge Management System

    A knowledge management system for enterprise customers. As the front-end developer, I implemented new features and fixed bugs. During my work on this project, I migrated the system to the latest Ext JS framework version.

  • Off-rental Vehicle Selling App

    An application dedicated to registered car dealers letting them buy off-rental cars. As the front-end developer, I implemented features, worked on bug fixes, and applied all changes requested by the client.


  • Languages

    JavaScript, TypeScript, HTML, CSS, HTML5, GraphQL
  • Frameworks

    Jest, Ext JS, React Native, AngularJS
  • Libraries/APIs

    React, Node.js, Backbone.js, jQuery
  • Other

    Accessibility, User Interface (UI), Web Extensions, Web Development, User Experience (UX), AWS, Apollo
  • Tools

    Figma, Zeplin
  • Paradigms

  • Platforms

    Docker, AWS Lambda, OS X
  • Storage

    AWS S3


  • Master's Degree in Computer Science
    2015 - 2018
    Jagiellonian University - Cracow, Poland
  • Bachelor's Degree in Computer Science
    2011 - 2015
    Jagiellonian University - Cracow, Poland

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