Senior Software Engineer | Full-Stack | Media Translation

Meet the team behind this journey

DeepL is not just a translation tool; we are building the Operating System for Global Communication. We are the rare AI company that builds the entire stack in-house: from training next-gen LLMs on our own NVIDIA DGX SuperPODs to delivering real-time Language AI to over 100 million users and 200,000+ businesses globally.

You will join the Language Products Track. This is the heart of DeepL. You will be building and expanding our flagship translation products, the core engines that power everything from our consumer web translator to our Enterprise Customization Hub (Glossaries, Translation Memory, and Style Rules) and complex multimedia localization flows.

We are shifting gears from "Software-First" to "Product-First." We don't hire engineers just to implement UI tickets or optimize algorithms in isolation. We hire product-obsessed people who care deeply about the user experience and the business impact of their code . You will build the interfaces and backend systems that allow a global enterprise to maintain their brand voice across 100+ languages effortlessly, while keeping the experience simple enough for a casual user.

Your responsibilities

• Own the Core Experience End-to-End: You will architect and build complex, user-facing features across our primary translation products . Whether you are building the UI for the translation flow, engineering the backend logic to parse and translate complex document formats (PDF, Word, PowerPoint) without losing formatting, or integrating DeepL directly into enterprise workflows, you own the outcome.

• Build for "Consumer-Grade" Enterprise: You will solve a unique product challenge: building an interface that feels instant and magical for a B2C user, but is powerful enough to handle the complex, multi-party collaboration and localization workflows required by enterprise teams.

• Architect for Ambiguity: You will make high-stakes technical decisions regarding state management, API integrations, and performance. You don't wait for perfect requirements; you prototype, measure user friction, and iterate fast .

• Bridge the Gap: You are bilingual in "Engineering" and "Business." You will collaborate closely with Research, Product, and Design teams to translate complex AI constraints into an intuitive UX . You will help win market trust by building transparency and performance metrics directly into the product.

Qualities we look for

• A "Product-First" Mindset: You care deeply about who uses your software. You ask "Why are we building this?" before writing a line of code. You measure success by user adoption and reduced friction, not just pull requests merged.

• Front-end Heavy Full-Stack Fluency: You are a strong Front End engineer who is comfortable traversing the stack to deliver a feature. You can build a highly interactive, performant UI in React and design the supporting backend logic in Python and C#/.NET Core, with the support of agentic tooling.

• High Agency & Bias for Action: You don't wait for permission. If you see a performance bottleneck in the translation flow, you profile it. If the documentation for a new API is missing, you write it . You are comfortable unblocking yourself and your team.

• A "System Thinker" for UI/UX: You understand that a simple UI often hides massive backend complexity. You can design systems that handle large document states, manage complex terminology rules (Glossaries), and maintain high performance in the browser.

What we offer

• Diverse and internationally distributed team: joining our team means becoming part of a large, global community with people of more than 90 nationalities. We're more than just colleagues; we're a group of professionals with a shared mission to connect diverse cultures. Our global presence is growing–we've doubled in size nearly every year, with our employees based in the UK, Germany, the Netherlands, Poland, the US, and Japan, and we continue to expand our network.

• Virtual Shares - An ownership mindset in every role. We believe everyone should share in our success, and that’s why every employee receives Virtual Shares, linking your contribution directly to DeepL’s growth and rewarding you with a stake in our future.

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