- Filled the role of Lead Frontend Developer by continually improving the frontend development workflows as well as adhering to "Best Practices" in frontend architecture and providing essential technical guidance to teammates and stakeholders- Designed and implemented the Apollo GraphQL API and Express.js backend powering transactional elements of www.autobild.de and www.computerbild.de. The API provides multiple query routes for various transactional elements and handles the entire car market at gebrauchtwagen.autobild.de. The backend exposes multiple routes to fetch data from the GraphQL API and return hydrated React components as Oembed response - Migrated and improved the consumer service of the Amazon Product Advertising API feed to TypeScript, adding Redis caching and rate limiting, reducing the number of requests to the API by over 90% and preventing API lockout- Mentored junior developers and students to enable knowledge sharing and professional development- Pitched the adoption of TypeScript for future projects by convincing coworkers and management. Led the technology switch by training the team, conducting extensive code reviews and assuring best practices

- Initiated and led a project to develop a Car Finder prototype for www.autobild.de, which included designing an Apollo GraphQL backend to provide multiple query endpoints and React components to display data and provide an excellent user experience. Further Technologies used include TypeScript, Next.js, Prisma, MySQL, MongoDB and Jest- Played a shaping role in a long-lasting modernization project, where I developed a backend (Nest.js, GraphQL) to aggregate data from multiple sources to be consumed by the frontend. Furthermore, I also impacted the frontend development by implementing best practices into the page and component architecture (Nuxt.js, Vue)- Initiated and led a project to redefine frontend development workflows, moving frontend responsibilities from a graphics team into the development teams to enable the transition to component-based development

- Certified Apprenticeship: Computer Science Expert- Completed in 16 Months instead of 36 Months- GPA: 4.0 (1,0) | Project: 4.0 (100%)- Worked on e-commerce stores for various customers, designed and implemented a blog in Mag-ento with P-H-P- Implemented an internal project management tool including automated aggregation of KPIs per e-commerce store using Sym_fony, P-H-P and JavaScript