Go to Website
  • en
  • de

Stefan G.

Software Architect and Developer

Heikendorf, Germany

Experience

May 2024 - Dec 2024
8 months

Software Architect and Developer

MediaMarktSaturn Retail Group

  • One of the largest e-commerce platforms in Europe with almost ten sales channels in various EU countries.
  • Technical environment: TypeScript, React, Styled Components, Apollo, GraphQL, Jest, Playwright, Git.
Apr 2022 - Sep 2023
1 year 6 months

Software Architect and Developer

Exaring AG

  • Waipu TV delights more than 5 million customers on various platforms and on the web.
  • Introduction of a new booking system for entertainment packages.
  • Web Player:
  • Support for the full lifecycle of a media SPA.
  • Feature development.
  • Bug fixing.
  • Maintenance.
  • TV package booking:
  • New or existing customer.
  • Upgrade or downgrade.
  • Existing or new payment method.
  • Kept functional through unit and UI tests.
  • Adjustments despite major changes to the codebase.
  • Cross-project error management system with Sentry in a monorepo.
  • Technical environment: JavaScript / TypeScript, React, CSS-in-JS, Jest, WebdriverIO, Git.
Feb 2020 - Dec 2020
11 months

Consulting, Software Architect and Developer

north.io GmbH (EGEOS GmbH)

  • Development of modern web applications with a strong GIS focus.
  • Consulting, architecture, and development from a single source.
  • Development of a design system based on Material-UI:
  • Leveraging synergies between projects.
  • Shortening development time.
  • Programming core functionalities like multi-layer theming.
  • Creating various components, including extended buttons and input elements.
  • Solving recurring problems and illustrating development patterns.
  • Documentation through an example project:
  • Onboarding new employees.
  • Ensuring adherence to existing conventions.
  • Training the team through presentations and practice exercises.
  • Technical environment: JavaScript (Babel), React, Material-UI, Styled Components, Apollo, GraphQL, Ramda, Jest, Git.
Feb 2019 - Jan 2020
1 year

Software Developer

KAISER+KRAFT Europa GmbH

  • Creation of a responsive webshop with a B2B focus in three versions and in over 20 countries.
  • Technical environment: JavaScript (Babel), React, Redux, Redux-Thunk, Ramda, Sass, Webpack, Jest, Git.
Jun 2018 - Dec 2018
7 months

Software Architect and Developer

Blockchain Holding GmbH

  • Development of a blockchain application from concept to finished product.
  • Display of performance metrics of user computing power and financial results.
  • Overview based on the entire user account.
  • Detailed views for different cryptocurrencies.
  • Responsive design for various devices.
  • Requirements analysis with a UX designer.
  • Technical implementation of requirements.
  • UI design process for aesthetics and development time.
  • Reusable React components for a minimal codebase.
  • Shared project structure for code reuse across project boundaries.
  • Rapid development using a fake backend.
  • Detailed documentation for backend and frontend coherence.
  • Technical environment: JavaScript (Babel), React, Material-UI, Redux, Redux-Saga, Ramda, React-Spring, Sass, Webpack, Jest, Git.
Apr 2016 - Apr 2018
2 years 1 month

Software Architect and Development

GIS Gesellschaft für InformationsSysteme AG

  • Development of a digital workplace solution.
  • Intuitive interface, improved productivity and employee networking.
  • Management of entire page structures and customizable widgets for content:
  • News, wiki, calendar, etc.
  • Dynamic system for customer requirements.
  • Maximum test coverage for quality assurance.
  • Storybook component catalog for structural tests and as a showcase for customers.
  • Scalable internationalization and responsive design.
  • Use of robust tools for future-proof development.
  • Technical environment: JavaScript (Babel), React, Material-UI, Redux, Redux-Saga, Ramda, Sass, Webpack, stampit, Ava, Node.js, Gulp, Git.
May 2015 - Dec 2015
8 months

Software Development

IronShark / VOXELWORLD

  • Development of a 3D editor for products:
  • Editing and viewing in the browser.
  • Customization by users.
  • 3D load and save options for configurations.
  • Manual and server-controlled manipulation of 3D objects.
  • Configurable scenes for lighting, shadows, camera, and zoom.
  • UI components for customizations:
  • Color, material, size, texture, labeling.
  • Client-side internationalization.
  • Node.js modules and browser conversion with Browserify.
  • Use of code for client- and server-side validation (UniversalJS).
  • Unit tests for logic modules.
  • Technical environment: JavaScript, three.js, UniversalJS, jQuery, WebGL, stampit, Git, Gulp, Browserify, BrowserSync, tape.
Jun 2014 - Jul 2014
2 months

Software Development

  • Development of a "What-if Analysis" prototype.
  • Full-stack application with MEAN.
  • Wizard input interface with synchronized diagrams.
  • Interactive and easy-to-follow user guidance.
  • 2D and 3D animations.
  • Highly modular code structure.
  • Technical environment: JavaScript, Node.js, d3.js, AngularJS, three.js, Express, MEAN stack, stampit, Bootstrap, Sass, Mercurial.
Mar 2012 - Jul 2015
3 years 5 months

Frontend Team Lead, Software Development

FalkAnalytics

  • Technical design and implementation of a reporting front-end single-page application.
  • Graphical data preparation with d3.js.
  • User-adjustable component layout and intuitive interface.
  • JavaScript performance analysis.
  • Automated tests.
  • Creation of in-house prototypes with jQuery and Bootstrap.
  • Technical environment: JavaScript, ExtJs, d3.js, HTML, CSS.
Oct 2008 - Dec 2011
3 years 3 months
Lorem ipsum dolor sit amet

University of Lübeck

  • Degree: Master of Science in Computer Science.
  • Software systems engineering, modeling, and implementation of large, complex software systems.
  • Consideration of the entire software lifecycle: requirements analysis, specification, implementation, operation, and maintenance.
Apr 2008 - Sep 2008
6 months

Software Development

itemis Pforzheim

  • Getting to know Java frameworks:
  • JavaServer Faces.
  • Eclipse Rich Client Platform.
  • Eclipse Modeling Framework.
  • Project at Bosch involving XML processing.
  • Technical environment: Java, XML.
Oct 2004 - Mar 2008
3 years 6 months
Lorem ipsum dolor sit amet

HS Ulm

  • Degree: Bachelor of Science in Technical Computer Science.
  • Design and creation of complete systems consisting of hardware and software.

Languages

German
Native
English
Advanced

Education

Oct 2008 - Dec 2011

University of Lübeck

Master of Science, Software-Systems-Engineering · Computer Science · Lübeck, Germany

Oct 2004 - Mar 2008

Ulm University of Applied Sciences

Bachelor of Science · Computer Engineering · Ulm, Germany

Need a freelancer? Find your match in seconds.
Try FRATCH GPT
More actions

Similar Freelancers

Discover other experts with similar qualifications and experience

Fahrettin K.

Architect and Full Stack Developer

View Profile
Eduard V.

Tech Lead Customer Base Documentation Automation

View Profile
Timur Y.

Lead Frontend Developer | Fullstack Developer

View Profile
Niklas W.

AI Engineer, Cloud Solution Architect, Backend Developer

View Profile
Andreas S.

Solution Architect, Business Analyst, Consultant, Full-Stack Lead-Developer

View Profile
Matti L.

FullStack development and customization of SAP UI5 Fiori WebApps for S/4 HANA

View Profile
Mathis D.

Senior Web/Frontend Developer

View Profile
Michael F.

Freelancer, Solution Architect

View Profile
Gwen G.

Senior Consultant

View Profile
Collin K.

Software architect / Fullstack Developer

View Profile
Andreas K.

Senior Developer

View Profile
Shamaila M.

Senior Software Architect

View Profile
Lukas G.

Full-Stack Developer / Architect

View Profile
Martin S.

TallyUp

View Profile
Jürgen F.

AR/VR/XR Architect

View Profile
fratch Part of Bitkom logo
linkedIncrunchbaseyoutube
  • English
  • Deutsch

2025 © FRATCH.IO GmbH. All rights reserved.