Software Engineer | Language Products | Full-Stack

Experteer Overview In this role you will shape DeepL’s flagship translation products, building user-facing features and robust backend systems that keep brand voice consistent across 100+ languages. You will work closely with Research, Product, and Design to translate AI constraints into intuitive UX for both consumers and enterprise teams. Expect to tackle complex document formats, multi-party workflows, and performance challenges with a product-first lens. You’ll accelerate delivery using AI-assisted tooling, shaping a highly scalable, user-centric platform with meaningful impact. Pay / Benefits * Architect and implement end-to-end, user-facing features for core translation products * Develop backend logic to preserve formatting when translating complex document formats (PDF, Word, PowerPoint) * Create interfaces that balance instant UX for B2C users with enterprise-grade collaboration and localization workflows * Make high-stakes technical decisions on state management, API integrations, and performance * Collaborate with Research, Product, and Design to translate AI constraints into intuitive UX * Leverage AI-powered tools to speed up development, testing, and debugging * Build transparency and performance metrics into the product Tasks * Full-Stack fluency with interactive UI in React and backend in C#/.NET Core or Python * Strong product mindset focused on user adoption and reducing friction * High agency with bias for action and ability to unblock oneself and the team * System thinker for UI/UX and scalable backend architectures * Experience handling large document states and complex terminology rules (Glossaries) Key requirements * Hybrid work * 30 days of annual leave * Virtual Shares * Hack Fridays * Regular in-person team events * Competitive benefits tailored to location

Design and performance * Collaborate with Research, Product, and Design to translate AI constraints into intuitive UX * Leverage AI-powered tools to speed up development, testing, and debugging * Build transparency and performance metrics into the product Tasks * Full-Stack fluency with interactive UI in React and backend in C#/.NET Core or Python * Strong product mindset focused on user adoption and reducing friction * High agency with bias for action and ability to unblock oneself and the team * System thinker for UI/UX and scalable backend architectures * Experience handling large document states and complex terminology rules (Glossaries) Key requirements * Hybrid work * 30 days of annual leave * Virtual Shares * Hack Fridays * Regular in-person team events * Competitive benefits tailored to location