DeepL

Senior Software Engineer | Voice | Full-Stack

DeepL
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13 hours ago
London, United KingdomSenior

Responsibilities

  • Build and deploy end-to-end features across high-performance frontend UIs, streaming audio backend services, and AI inference integrations.
  • Debug and resolve real-time communication issues involving latency spikes, transcript flicker, audio glitches, and unstable network environments.
  • Prototype new features quickly and refactor them for scale in a 0-to-1 product environment.
  • Collaborate with Product Managers, Product Designers, and AI Researchers to shape and solve product and technical challenges.
  • Optimize the conversational user experience and automate processes or improve unclear technical documentation when needed.

Requirements

  • Demonstrated full-stack fluency with React and TypeScript on the frontend and Node.js/TypeScript or a strongly transferable backend language.
  • Experience with real-time technologies such as WebRTC, WebSockets, streaming architectures, and latency-sensitive systems.
  • A product-first, customer-focused mindset and comfort working autonomously in ambiguous 0-to-1 environments.
  • Willingness to use AI-powered development tools such as GitHub Copilot or Claude for coding, testing, and debugging.

Benefits

  • Hybrid work with office attendance twice per week and flexible working hours.
  • Virtual Shares for every employee.
  • Regular in-person team events and monthly full-day Hack Fridays.
  • 30 days of annual leave excluding public holidays, plus mental health resources.
  • Competitive location-specific benefits and access to an internationally distributed team.
DeepL

About DeepL

1,001-5,000 employees

DeepL builds AI language tools, including the DeepL Translator web and mobile apps, an API for developers, writing assistance, and real-time voice translation for individuals and global businesses. It sells subscriptions and API usage to companies that need high-quality multilingual communication. Founded in 2017 and headquartered in Cologne, Germany, DeepL serves over 200,000 business customers across more than 200 markets.

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