Sebastian W.

Web Techno­lo­gies | UI Frame­works Developer


17 years of experience with web techno­lo­gies. Loves clean designs and smart inter­faces. Visio­nary, inventor & do-gooder. Autodi­dact, critic & mentor. Initiator and long-time developer of UI frame...see more

  • Design
  • Information Technology Data & Telecom


  • Pre-vetted expert
  • Confirmed hourly rate
  • Available on short notice


React and GraphQL Specialist Online Shop Platform

empiriecom GmbH & Co. KG
2 years
Current position
Oct 2020 - Present
Extension of the GraphQL service with new resolvers integrating a MySQL database and existing REST services. Architectural improvements of the GraphQL service regarding typing, use of A...see more

Frontend Architect (Consultant)

1 year
May 2019 - Aug 2020
Further development and extension of a web application for interactive tracking of trucks with construction materials. Development of a heuristic to automatically visually prepare truck...see more

React Architect and Mentor (Consultant)

Witt-Gruppe (a member of the otto group)
8 months
Sep 2018 - May 2019
New development of an online shop for the Witt Group. Technologically ReactJS and GraphQL are used in the frontend. On the server side, an orchestration with GraphQL based on NodeJS is ...see more

React Architect and Developer (Consultant)

3 months
Jun 2018 - Sep 2018
New development of the joint ARD media library. The particular challenge was to support older and slower devices (TVs). The solution was developed using a multi-platform approach: Mobil...see more

React Architect for imple­men­tation of a traffic infor­mation offer (Consultant)

INIT Group
3 months
Mar 2018 - Jun 2018
New development of a web-based dashboard with e.g. real-time departure infor­mation for use in the public transport environ­ment. Self-responsible archi­tecture and development in consu...see more

React Expert with sensi­tivity for business needs to develop a telematics offering (Consultant)

RIO The Logistics Flow
2 months
Dec 2017 - Feb 2018
Support in the development of a platform already used by custo­mers. Distri­buted team with offices in Leipzig and Munich. Sugge­sting Archi­tec­tural impro­ve­ments and mentoring of co...see more

Senior Frontend Developer for platform of the pharma­ceu­tical industry and physi­cians (Consultant)

6 months
May 2017 - Nov 2017
Project setup for a Green Field React appli­cation in the pharma­ceu­tical sector. Restruc­turing of the existing component library. Intro­duction of own NPM reposi­tories to increase t...see more

Leading frontend archi­tecture and development for an online banking portal

Deutsche Bank
2 months
Feb 2017 - Apr 2017
Building a frontend archi­tecture in coope­ration with system archi­tects and product managers. Training, mentoring and code accep­tance (Git-Flow + pull requests) for 2 offshore teams ...see more

Frontend archi­tecture and development for an Internet Learning Portal

5 months
Sep 2016 - Feb 2017
Archi­tecture analysis and optimi­zation of the existing front end. Development and archi­tecture in the React environment with other techno­logies such as Gulp, Webpack, ESLint, StyleL...see more

Frontend archi­tecture and development for online shop

3 months
May 2016 - Aug 2016
Conversion of the styling platform to PostCSS. Development of the tooling solution with HMR for React Universal. Techno­lo­gies: Universal React + Redux, React-Intl for inter­na­tio­na­...see more

Frontend archi­tecture for innovative new investment platform of Deutsche Bank Group

Deutsche Bank
4 months
Oct 2015 - Feb 2016
Consulting front-end archi­tecture for a new inter­na­tional investment platform. The requi­re­ments were in the following areas: SPA (Single Page Appli­ca­tion), live updated charts an...see more

Managing Director

Sebastian Software GmbH
8 years
Current position
May 2014 - Present
Working on innovative digital products and offering consultant for web technology projects (focused on UI architecture)

Industries, roles and expertise

Industry experience

  • Design
  • Information Technology Data & Telecom


  • Web Applications
  • CSS
  • HTML
  • JavaScript
  • Node.js
  • React.js
  • Git
  • User Experience (UX)
  • User Interface (UI)