freiberufler React / Node / GraphQL Developer auf

React / Node / GraphQL Developer

  • auf Anfrage
  • 92-311 Lodz
  • Europa
  • pl  |  en  |  de
  • 21.02.2020


Expert: React, Redux, GraphQL and all ecosystem

Ich biete

  • Amazon Web Services (AWS)
  • CSS (Cascading Style Sheet)
  • GraphQL
  • HTML5
  • JavaScript
  • Node.js
  • React (JavaScript library)
  • React Native
  • Testautomatisierung
  • TypeScript

Projekt‐ & Berufserfahrung

React Developer
Deutsche Bank, Frankfurt am Main
12/2018 – 6/2019 (7 Monate)

12/2018 – 6/2019


Responsible for developing a Wealth Management System in a strict timeframe due to a new MiFID II regulation, delivering the most important part of the product for the business, which was calculating the final Investment Proposal for Customers.
o Closely cooperated with Business Analysts in order to understand Functional Documentations
o Successfully delivered the Investment Proposal part, passing a Code Review and meeting business requirements
o Was involved in technical review and developed other parts of the system based on the collected data
o Supported on-site developers for best coding practices, conducting Code Reviews and cooperating with them tightly
o Technologies: React, Redux, Immutable, Babel, Webpack, Mocha

Eingesetzte Qualifikationen

React (JavaScript library)

Senior React Developer
XING, Hamburg
6/2018 – 12/2018 (7 Monate)

6/2018 – 12/2018


More independent work as an external contractor providing services to the client. Taking part in overhauling XING’s Startpage and cooperating with stakeholders: Senior Frontend Developers, UI Designer, Product Owner, QA Engineer.
Technologies: React, Redux, Flow, Immutable, Jest, Webpack, NodeJS

Eingesetzte Qualifikationen

React (JavaScript library)

Full-Stack Software Engineer (Festanstellung)
Ringier AG, Zürich
2/2018 – 10/2019 (1 Jahr, 9 Monate)

2/2018 – 10/2019


o Delivered brand new web and mobile applications for Android and iOS for Blick Gruppe
o Led a team in the following topics: GraphQL, Backend Development, Testing, React Hooks
o Created a strategy for Automated Testing (Unit, Integration, Snapshots, E2E - including a novel Screenshots Testing)
o Conducted extensive Code Reviews and successfully interviewed new engineers
o GraphQL techie, Technologies: React, React Native, GraphQL, NodeJS, Express, TypeScript, Jest, WebdriverIO, Webpack, AWS, Redis

Eingesetzte Qualifikationen

Node.js, JavaScript, React (JavaScript library), React Native

Software Engineer (Festanstellung)
Accenture, Lodz
10/2014 – 9/2015 (1 Jahr)
IT & Entwicklung

10/2014 – 9/2015


The aim of the project was to create E-Commerce Store in Magento and Mobile Application connected with ePOS devices at supermarkets. Responsible for validating existing solutions prepared by a team from Manila, proposing improvements and implementing them.
o Closely cooperated with two Accenture’s Managers from Munich to get an overview of all requirements
o Proposed a new architecture of the project, which was validated and accepted by Accenture’s Architects
o Managed a team consisting of 7 developers and mentored them on how to write applications in AngularJS
o Successfully delivered a Hybrid Mobile Application and handed it over to the team from Munich
o Technologies: JavaScript, AngularJS, Ionic Framework, Apache Cordova, HTML5, CSS3, Sass, Grunt, Bower, jQuery, PHP 5, Magento 1.6, REST API, MySQL, Git, Agile, Scrum, Kanban, Unit Testing, Java (ePOS Device)

Eingesetzte Qualifikationen

Agile Entwicklung, AngularJS, JavaScript, Magento

Full-Stack Engineer, Ruda Slaska
6/2014 – 8/2014 (3 Monate)
IT & Entwicklung

6/2014 – 8/2014


A short-term contract to develop real-time modules for Internet of Things platform using Meteor.js. Directly cooperated with the CEO of the company and delivered a module for displaying the status of connected devices using LeafletJS.

Eingesetzte Qualifikationen


Software Developer
TheSweetApps, Horsens
5/2013 – 9/2013 (5 Monate)
IT & Entwicklung

5/2013 – 9/2013


A short-term contract providing services to the client and directly cooperating with the CEO of the company. Mainly responsible to provide a solution which needed to be deployed within a very strict deadline.
o Delivered a Hybrid Mobile Application with a dedicated CMS in time, with the performance accepted by CEO
o Maintained existing native applications both on Android and iOS platforms
o Technologies: JavaScript, Apache Cordova, Intel App Framework, ASP.Net MVC 4, C#, Entity Framework 4.5, Microsoft SQL

Eingesetzte Qualifikationen

.Net Framework (Mircosoft), JavaScript


Management & Production Engineering

(Master of Science)
Jahr: 2016
Ort: Lodz
Software Engineering & Data Analysis

(Bachelor of Science)
Jahr: 2014
Ort: Lodz

Über mich

Software Engineer with around 6 years of experience in different sectors including FinTech, E-Commerce, Media, Social Media gained at esteemed international companies like Deutsche Bank, Accenture, XING, Ringier.
Full software lifecycle knowledge with an emphasis on Web Development (incl. React, GraphQL, TypeScript / Flow, NodeJS), Mobile Development (incl. React Native, Apache Cordova) and Automated Testing (incl. Snapshot / Screenshot Testing – E2E Testing).
Since 2016 have been seeing the bright future for React and GraphQL paired together and now they are getting mainstream in the ecosystem. Proven track record using these technologies both as a contractor and permanent.
Now seeking the next rewarding opportunity to make a successful impact in a customer-focused team.

Persönliche Daten

  • Polnisch (Muttersprache)
  • Englisch (Fließend)
  • Deutsch (Gut)
  • Europäische Union
  • Schweiz
9 Jahre und 4 Monate (seit 05/2013)
5 Jahre


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