Sebastian Werner

Regrello — internationalization for an established enterprise platform

I led the internationalization of a substantial enterprise application, bringing translation into its UI and development workflow. This combined Lingui localization, catalog tooling, and LLM-assisted translation. I also contributed review interfaces for translated user content and modernized the frontend workspace, linting, and component-development setup.

3Degrees — product UI, internationalization, and rendering performance

I lead work on visual quality, internationalization, and frontend performance for this US-based energy-management product. I introduced application localization, migrated Lingui to Palamedes, and worked on public marketplace pages, mobile layouts, SEO, caching, and streaming. The team works entirely in English and uses AI-supported development extensively.

Otto Group — architecture for multilingual, multi-brand commerce

At Witt, I introduced GraphQL orchestration across backend services so the shop frontend could use a consistent API. My work covered server rendering, code splitting, build tooling, and internationalization for Eastern Europe. At empiriecom, I contributed GraphQL and component-library development and helped clarify implementation questions.

Deutsche Bank / DWS — frontend architecture for banking and investments

For corporate banking and a robo-advisor investment platform, I contributed frontend architecture, technology decisions, and interactive financial visualizations. I worked with specialist and distributed teams within formal approval and release processes.

Huawei / Deutsche Telekom and Zynga — performance for TV and game interfaces

At EntertainTV, I implemented animations, layouts, and interaction on limited set-top-box hardware. At Zynga, I worked on HTML5 game infrastructure, scrolling, and developer tooling in a large JavaScript environment. Both required detailed work on runtime behavior and UI performance.

EnBW — a shared frontend foundation for white-label portals

I built shared monorepo, theme, component, and typed API foundations for customer portals and a support workbench. The platform supported tenant-specific features, content, and visual identity. I documented how to separate data integration from reusable UI components.