DeepL

About the Company

DeepL is a global communications platform powered by Language AI. Since 2017, we’ve been on a mission to break down language barriers. Our human-sounding translations and intelligent writing suggestions are designed with enterprise security in mind. Today, they enable over 100,000 businesses to transform communications, reach new markets, and improve productivity. And, empower millions of individuals around the world to make sense of the world and express their ideas.

Join us in exploring the possibilities of Language AI!

Listed Jobs

Company Name

DeepL

Job Title

Senior Research Scientist | Voice AI

Job Description

**Job Title:** Senior Research Scientist – Voice AI **Role Summary:** Lead the research and development of end‑to‑end voice AI systems, including transcription, real‑time translation, and text‑to‑speech. Pilot high‑performance deep learning models on dedicated GPU clusters, optimize for low‑latency production, and translate research breakthroughs into widely deployed products. Work cross‑functionally with engineering, HPC, and DevOps to ensure high reliability and scalability. **Expectations:** - Drive foundational innovation beyond incremental improvements. - Own a research portfolio that directly impacts product quality and market adoption. - Maintain high uptime and performance through participation in on‑call rotations. **Key Responsibilities:** - Design, train, and deploy large‑scale neural models for voice transcription, translation, and TTS. - Optimize models for latency, throughput, and resource efficiency in real‑time environments. - Collaborate with ML platform, HPC, and DevOps teams to move prototypes from research to production. - Lead independent research initiatives, publishing findings and integrating them into product pipelines. - Mentor junior scientists and contribute to the broader research community within the organization. - Participate in an on‑call rotation to ensure service reliability. **Required Skills:** - PhD or equivalent industry experience in mathematics, physics, computer science, or related field. - Proven track record building and shipping large‑scale deep learning models to production. - Expertise in Python and a modern ML framework (PyTorch, TensorFlow, or JAX). - Strong mathematical aptitude in neural network theory and optimization. - Experience with GPU cluster training and large‑scale model deployment. - Excellent English communication; knowledge of German or other languages is a plus. **Required Education & Certifications:** - PhD or Master’s degree in Mathematics, Physics, Computer Science, Electrical Engineering, or a related discipline. - Relevant certifications in Deep Learning or AI (e.g., TensorFlow Developer Certificate) preferred but not mandatory.

London, United kingdom

Hybrid

Senior

24-11-2025

Company Name

DeepL

Job Title

Software Engineer | Language Products | Full-Stack

Job Description

**Job Title:** Software Engineer – Language Products (Full‑Stack) **Role Summary:** Develop and ship full‑stack features for DeepL’s real‑time voice translation products (Voice for Meetings, Voice for Conversations). Build responsive UI components, integrate high‑performance streaming APIs, and ensure millisecond‑level latency while collaborating in a fast‑paced, AI‑driven environment. **Expectations:** - Rapid learning and problem‑solving on novel AI and real‑time communication challenges. - Full‑stack adaptability across frontend (React/TypeScript) and backend (C# or Python). - Strong user empathy to deliver robust, intuitive experiences in high‑pressure contexts. - Bias for action: prototype quickly, iterate based on feedback. - Leverage AI‑assisted development tools to accelerate coding and testing. **Key Responsibilities:** - Design, implement, and refine user‑facing features for web and mobile applications. - Connect frontend clients to DeepL Voice APIs using WebSockets/gRPC, handling connection stability on unreliable networks. - Profile and optimize React components and backend audio‑processing services for real‑time performance. - Participate in code reviews, pair programming, and knowledge‑sharing sessions. - Collaborate with senior engineers and researchers to integrate cutting‑edge Text‑to‑Speech and LLM models. - Employ AI tools for boilerplate generation, test creation, and debugging. **Required Skills:** - Proficient in React and TypeScript; solid experience with C# or Python backend development. - Hands‑on experience with real‑time streaming protocols (WebRTC, WebSockets, gRPC). - Ability to profile, benchmark, and tune latency‑critical applications. - Familiarity with AI integration concepts (LLMs, TTS) and AI‑assisted development tools (e.g., GitHub Copilot, Claude). - Strong problem‑solving mindset, code quality focus, and effective communication. **Required Education & Certifications:** - Bachelor’s degree in Computer Science, Software Engineering, or a related technical field (or equivalent practical experience). - No specific certifications required; demonstrable expertise in the above skill set is essential.

London, United kingdom

On site

17-02-2026