Consulted for clients with accessibility testing and auditing with WCAG 2.1 guidelines, conducted accessibility workshops for developers and published accessibility guidelines.Helping teams and clients with making their products more accessible with:💡 Accessibility consulting during concept, design & development🔎 Accessibility tests & audits for web and app accessibility👨🏻‍🏫 Workshops and talks about digital accessibility for developers, product designers and content writers👨🏻‍💻 Software development and consulting for websites and web appsA selection of my previous clients include:🚈 Berliner Verkehrsbetriebe (BVG, Berlin Public Transport)🧑‍🦽 wheelmap.org (Sozialheld*innen)🖍️ tangle.app (absurd:joy)🪪 Bundesdruckerei🏫 Bertelsmann Stiftung

- Created and bootstrapped an extensive multidisciplinary accessibility coaching program.- Tested screen reader accessibility for client facing products.- Assessed the accessibility for internal projects.

- Co-developed the EU-funded Smart4Health web app, which lets patients store and selectively share their personal health data in an end-to-end encrypted way.- Contributed to and iterated on reusable, accessible components in the Data4Life design system.- Transitioned legacy code base to a modern stack while keeping compatibility to previous requirements.- Stack: React, Redux, TypeScript, CSS, Stencil, Web Components, Storybook.

- Co-developed the sprind.org website (Vue.js) and content-management-system back end (Strapi).- Responsible for making the website and the code accessible for assistive technologies (screen readers, keyboard navigation, reduced motion).- Creation and guidance for a voluntary accessibility assessment and statement.- Stack: Vue.js, CSS, Strapi.

- Co-developed the 2.0 of wheelmap.org, a map app for mobile and the web to find wheelchair-accessible places.- Improved keyboard and screen reader accessibility of the web app itself and contributed to more accessible icon designs.- Supported with post-launch feature development.- Stack: React, TypeScript, Styled Components, Meteor, MongoDB.

- Developed, maintained and ported interactive educational exercises based on interactive SVGs and React.- Developed an achievement system with badges to help the gamification of video watching streaks.- Supported with bootstrapping technical foundations of the Sofahelden (sofa heroes) spin-off app for education of first-graders.- Stack: React, JavaScript, CoffeeScript, Storybook, CSS, Sass, Emotion, Ruby on Rails, SVG, MySQL, Haml.

- Co-developed the MVP for Packenda, a web app for aggregated parcel tracking overviews for different logistics providers.- Took over responsibility from previous developers and maintained and developed the front end and improved its accessibility.- Supported the team from initial stages until first MVP launch.- Stack: React, TypeScript, Styled Components, Java back end.

- Developed user-facing features of the Babbel language learning product.- Created specific language exercises for vocabulary learning.- Introduction of React into the codebase.- Stack: React, Redux, Ruby on Rails, iOS, Android.

- Developed interactive educational exercises with a high variance of interactive modes and designs.- Improved inherited codebase to increase development and iteration speed.- Stack: AngularJS (1.4), Ruby on Rails, Haml, Sass, SVG.

- Developed and maintained various parts of the back-end and front-end architecture.- Built custom-tailed editorial CMS with Ruby on Rails.- API design and consumption through REST APIs backed by a Neo4j graph database.- Stack: Ruby on Rails, HTML, Sass, Neo4j, Elasticsearch.

- Developed and maintained an interactive weather map app for meteorologists to send SMS warnings for extreme weather events to subscribed users.- Created custom map generation based on geodata and Java.- Built an interactive frontend with vanilla JavaScript.- Stack: Java, JavaScript, GeoJSON.