Full stack web application development
conception, implementation, consulting
neXenio GmbH, Berlin
lead implemention of bdrive web apps
designed employee dialog process, performed dialogs, participated in hiring process
coordinated product and architectural development across multiple teams
strong focus on security & cryptography
leading setup of cross-platform E2E tests via WebdriverIO for "Digitale Einreiseanmeldung" (https://einreiseanmeldung.de)
React, Redux, redux-saga, styled-components, Webpack, Babel, K8S, WebdriverIO
neXenio GmbH, Berlin
multiple cross-functional teams for developing a fully-encrypted end-user data storage solution (bdrive)
strong focus on security & cryptography
implemented multiple single-page web applications (React/Redux) & mobile apps (iOS/Android, React Native)
React, Redux, React Native, styled-components, Webpack, Babel, OpenShift
neXenio GmbH, Berlin
multiple cross-functional teams for developing a fully-encrypted cloud storage solution
main focus on implementing multiple single-page-applications based on React/Redux
strong focus on dead-simple usability in collaboration with a UX team
highly involved in ensuring scalability (maintenance of build pipelines, heavy usage of docker and
developed APIs and web-based clients for different platforms (browser extensions, OSX, Windows)
React, Redux, styled-components, Webpack/Babel, OpenShift
ZenGuard GmbH, Berlin
developed APIs and web-based clients for different platforms (browser extensions, OSX, Windows)
maintained build and deployment pipelines
responsible for macOS app development with strong integration of product management
React, Bacon.js, SCSS, express, Webpack, Babel, Wercker, AWS, Heroku
HeavenHR GmbH, Berlin
developed a rich stand-alone single page application to be used internally in an SOA
leading the transition of the core application from multi-page to single-page app
setup of automated QA acceptance tests
React, Redux, Inline Styles, Cucumber, Webpack, Babel, NPM
Signavio GmbH, Berlin
responsible for transition towards React/#ux-based technology stack
responsible for further improvement of the front end build system & developer experience
organized and conducted developer trainings concerning changes in technologies and work#ow
React, Flux, Webpack, Babel, NPM/NPM Private
Signavio GmbH, Berlin
redesigned and reimplemented one of the company's applications in a small agile team
refactored front end build system to use modern build tools and enable unit testing
organized and conducted developer trainings regarding new tooling
Ext/Sencha, Gulp, Less, REST, Karma Test Runner, Mocha, Chai
Hasso Plattner Institute, Potsdam
Supported development of a web-based collaborative canvas
HTML5/Canvas, XMPP
SAPERION AG, Berlin
implemented a browser single page application for an enterprise cloud storage product from scratch (multiple Scrum teams)
developed concepts for technology choice, architecture and user experience
eastablished unit, integration and automated UI testing for web frontend
HTML5, Backbone, grunt, Less, REST, Selenium (Java)
planned and implemented Electron app for use as a new product on panel PCs at different customers
integrated external hardware (i.e. USB-connected RFID scanner)
worked on backend to incorporate necessary changes concerning authentication and business logic
Serverless, AWS API Gateway/Lambda/DynamoDB, Electron, React, Material UI
technical concept and implementation of new single-page web application
incremental adoption alongside existing multi-page application
React, Next.js, Playwright, Jest, Amplify
suporting existing https://www.luca-app.de Backend team for new payment feature
feature development in existing Node.js backend
technical coordination and backend-side implementation of device attestation (App Attest, SafetyNet & Android Key Attestation)
writing and reviewing RFCs
Node.js, express, App Attest, SafetyNet Attestation API, Android Key Attestation, RabbitMQ, PostgreSQL
ported existing shop widget from Flutter to React
created foundation (repo setup, technology choice, initial structure, CI/CD)
implemented some features & supported developer in gaining know-how of the stack
React, styled-components, Netlify
created UI/UX concept for an upload portal for driving documents (web app)
implemented the web app (incl. CI/CD)
React, JWT, styled-components, GitHub Actions, Netlify
supported existing team in developing https://www.wonder.me, an online meeting platform
developed new features in the existing React/Canvas-based app either independently or in pair programming
conducted performance analysis and implemented according improvements
React, SASS, Canvas
built new administration app for TIKI SUP (https://tiki-sup.com)
created UI concept based on provided use cases
implemented app against existing API
React, Material UI, Netlify
built new website & online shop for unu (https://unumotors.com) together with advalyze (including another freelancer)
created concept for and implemented modular design system based on Contentful (headless CMS) and Gatsby
implemented animation-heavy responsive design
connected CRM backend via Netlify functions
Gatsby, React, Contentful, Web Animation API, Netlify, Serverless functions
Hasso Plattner Institute, Potsdam